bluuebunny/crossref_metadata_2025 huggingface dataset:
Editorial Comments: Maintaining Baseline, Corrective Surgical Care during Asymmetrical Warfare: A Case Study of a Humanitarian Mission in the Safe Zone of a Neighboring Country
Authors: Ammar Ahmed
Published: August 2016

I congratulate the authors of this article for their beneficial and much-needed work. I consider this work to be a bright shining light in a dark tunnel and a brave move in the right direction. The true value of this work is far beyond the treatment of 71 patients; it implants hope where there is confusion, promotes love where there is hate, and initiates trust and confidence where mistrust is common. Today, humanitarian aid groups and relief organizations face unique, difficult conditions, and sometimes must answer obscure questions and respond to new problems. History tells us that the war ends when the cease fire starts, that humanitarian organizations are well-received and protected, and that victims and patients respect and trust those providing medical treatment, regardless of their nationality. However, current reality reveals that a cease fire sometimes marks the start of a different war with a different strategy. The number of victims after the cease fire may exceed the number of conventional war victims. Some politicians generalize, classify, and reclassify people, creating mistrust, a lack of confidence, and confusion. It is sad to see victims who need treatment, while nearby there are well-meaning people willing to treat them but who are unable to do so without great risk.
Poison Control Center Surge Capacity during an Unusual Increase in Call Volume–Results from a Natural Experiment
Authors: Vassilev Zdravko P. , Kashani John , Ruck Bruce , Hoffman Robert S. , Marcus Steven M.
Published: August 2016

Introduction:

Poison Control Centers (PCCs) play an integral role in the preparation for and management of poison emergencies. Large-scale public health disasters, caused by both natural and human factors, may result in a drastic increase in the number of inquiries received and handled by Poison Control Centers (PCCs) in short periods of time. In order to plan and prepare for such public health emergencies, it is important for PCCs to assess their ability tohandle the surge in call volume and to examine how the unusually large number of calls could affect the level of services. On 26 January 2006, the New York City Poison Center experienced a sudden loss of telephone service.The disruption in telephone service led to the need to reroute calls from that geographical catchment area to the New Jersey Poison Information and Education System (NJPIES) for several hours.

Methods:

Data from the New Jersey Poison Information and Education System was abstracted from the telephone switch's internal reporting system and the New Jersey Poison Information and Education System's electronic record system and processed with a standard spreadsheet application.

Results:

Compared to the same time and day in the previous week, the total number of calls received by the New Jersey Poison Information and Education System during the four hours after the disruption increased by 148%. A substantial rise in the number of calls was observed in almost every 15-minute increment during this four-hour (h) time period (with some of these increments increasing as much as 525%). Meanwhile, the percentage of calls answered by the New Jersey Poison Information and Education System decreased, and the percentage of calls abandoned during a 15-minute increment reached as high as 62%. Furthermore, the average time for handling calls was longer than usual in most of these 15-minute increments.

Conclusions:

Limitations of the telephone technology, which impacted the ability of the New Jersey Poison Information and Education System to respond to the surge of calls, were observed. While the New Jersey Poison Information and Education System was able to handle the unusual increase of incoming calls using available poison specialists and staff, the experience gained from this natural experiment demonstrates the need for Poison Control Centres to have a pre-planned surge capacity protocol that can be implemented rapidly during a public health emergency. A number of challenges that Poison Control Centres must meet in order to have adequate surge capacity during such events were identified.
KAMEDO Report No. 86: Explosion in the Artificial-Fertilizer Factory in France, 2001
Authors: Riddez Louis , Joussineau Siegfried , Magnusson Eva
Published: August 2016

On 21 September 2001, an earthquake triggered an explosion at an artificial fertilizer factory in Toulouse, France. As a result, 30 people were killed and 3,500 people were injured. Extensive damage hindered rescue services in their efforts to reach the factory; however, within several hours an assembly point with 60 doctors was established several kilometers from the explosion site. One hospital close to the scene needed to be temporarily evacuated.The disaster challenged rescue teams on many levels; for example, there was a question of toxicity, as well as communication difficulties due to the damaged telephone lines and clogged mobile networks.
Presumed Mass Illness following a Pyridine Fumes Incident: Environmental Contamination versus Mass Hysteria
Authors: Van der Auwera Marcel , Beckers Rudi , Devue Katleen , Claes Petra , De Cock Axelle , Deleu Nico
Published: August 2016

This case study is based on a chemical spill in a warehouse in Belgium. Two victims were hospitalized, and a confluence of symptoms among the warehouse personnel had to be managed medically. An on-scene medical station and medical management team were deployed. A total of 51 victims were examined. Medical, political, and labor management arguments occurred. Medical findings and results from a thorough investigation helped prevent a presumed illness epidemic. The primary goals of the medical management of victims must include ensuring the health and safety of the personnel involved.
Management of Evacuee Surge from a Disaster Area: Solutions to Avoid Non-Emergent, Emergency Department Visits
Authors: Irvin Charlene B. , Atas Jenny G.
Published: August 2016

Introduction:

Many emergency departments (EDs) in the United States experience daily overcrowding, and a rapid influx of evacuees fleeing a disaster area can pose a substantial burden. Some of these evacuees may require ED care. However, others lack an alternative to the ED to address non-emergent medical concerns (prescription refills or outpatient referral).

Objective:

The objective of this study was to describe a successful multidisciplinary Hurricane Katrina Evacuation Center, explain the services offered, and determine the center's effects on referrals to local EDs.

Methods:

Data were collected concerning the number of patients utilizing the medical evaluation center and compared to the total number of evacuees to determine the proportion that utilized medical care. The data concerning patients given prescriptions was obtained by the estimation of the two medical directors of the Center, and therefore, is inexact.

Results:

During the five weeks the center was operational, 631 of 716 evacuees (88%) requested medical evaluation, and >80% of those had prescriptions written. Only four (<1%) patients were transported to local EDs.

Conclusion:

An evacuee evaluation center provides a convenient non-ED alternative for evacuees to address their non-emergent medical concerns and can be used to ease their transition to a new location.
KAMEDO Report 89: Terrorist Attack in Bali, 2002
Authors: Brolén Pepe , Örtenwall Per , Österhed Håkan , Brändström Helge
Published: August 2016

On 12 October 2002, two bombs exploded on the island of Bali in Indonesia, destroying two bars in the tourist district of the holiday resort Kuta Beach. The explosions killed 202 people from 21 different countries, and >300 people were injured. A team of observers conducted structured and unstructured interviews, and lessons learned from the experience were identified. This report summarizes various elements of the response including: (1) prehospital care; (2) coordination; (3) hospital response; and (4) Australia's efforts in air evacuation.
West Bank Barrier Decreases Access to Schools and Health Services
Authors: Qato Dima , Doocy Shannon , Tsuchida Deborah , Greenough P. Gregg , Burnham Gilbert
Published: August 2016

Introduction:

In 2001, the Israeli government announced the construction of the West Bank barrier. The stated purpose of construction to prevent attacks by Palestinians on Israeli citizens. In a subsequent advisory opinion, the International Court of Justice decided the wall would block access to health care and education, and was “contrary to international law”.

Research Focus:

The Barrier, with its limited number of gates, has been criticized by humanitarian agencies for limiting access of Palestinians to employment, health care, and education, but was defended by the Israeli government as an important security measure.

Methods:

A survey of key informants was conducted in May 2004 at 78 health facilities and 121 schools in the northern West Bank districts of Jenin, Qalqilya, and Tulkarem, in order to assess the impact of the Barrier on access and use of health and educational services.

Results:

The Barrier negatively affected access to education and health care, in terms of statistically significant increases in distance and travel time to schools and health facilities. In several areas, service utilization, assessed by weekly visits to health facilities and student enrollment, was affected by barrier construction, although these findings were not statistically significant. A significant decrease in staff attendance was observed at health facilities and schools.

Conclusions:

The Barrier may have long-term effects on access and utilization of health and educational services among Palestinians in the northern West Bank.
Prehospital Emergency Care and Medical Preparedness for the 2005 World Championship Games in Athletics in Helsinki
Authors: Hiltunen Tuomas , Kuisma Markku , Määttä Teuvo , Tennilä Arto , Hari Tuomo , Bäckman Riitta , Väyrynen Taneli
Published: August 2016

Introduction:

International mass gatherings can cause great challenges to local healthcare system and emergency medical services (EMS). Traditionally, planning has been based on retrospective reports of previous events, but there still is a need for prospective studies in order to make the process more evidence-based. The aim of this study was to analyze the success of medical preparedness, ambulance patient characteristics, emergency care, and the use of pre-hospital resources during the 2005 World Championship Games in Athletics in Helsinki, Finland.

Methods:

The study was a prospective, observational study conducted within the Helsinki EMS. Data from all emergency calls at the sport venues and Games village between 05 and 14 August 2005 were collected. Data from the organizations responsible for the health care and first aid of spectators and accredited persons (e.g., athletes, coaches, the press, very important persons and personnel working in the Games area) also were collected. The Institutional Review Board of Helsinki University Central Hospital approved the study plan.

Results:

A total of 479,000 persons visited the Games. The ambulance call incidence at the Olympic Stadium was 0.50 per 10,000 people and 0.7 per 10,000 when the Games Village was included. The overall need for ambulance transportation to the emergency department was 0.52 per 10,000. No patients needed cardiopulmonary resuscitation or other immediate, life-saving procedures on-site. First aid was provided to 554 spectators (0.17per 10,000 people). The three medical organizations cared for 1,586 patients of which 25 (1.6%) were transported to a hospital by an ambulance. The number of patients needing transportation and the overall patient loadfor the healthcare system was well-anticipated. Accredited persons sought health care a total of 1,009 times.The number of patients treated was associated closely with the number of spectators (p = 0.05). The number of ambulance calls in the city increased 5.9 % as compared to the corresponding time period in the five previous years.

Conclusions:

The medical preparedness and resources for the Games proved to be sufficient. The EMS personnel were able to provide quality emergency care. This prospective study provided new, detailed data for the medical aspects of mass gatherings and confirmed many previous observations.
Staff Procedure Skills in Management Groups during Exercises in Disaster Medicine
Authors: Rüter Anders , Örtenwall Per , Vikström Tore
Published: August 2016

Introduction:

In stressful situations such as the management of major incidents and disasters, the ability to work in a structured way is important. Medical management groups initially are formed by personnel from different operations that are on-call when the incident or disaster occurs.

Objective:

The aim of this study was to test if performance indicators for staff procedure skills in medical management groups during simulations could be used as a quality control tool for finding areas that require improvement.

Methods:

A total of 44 management groups were evaluated using performance indicators in which results could be expressed numerically during simulations.

Results:

The lowest scores were given to documentation and to the introduction of new staff members. The highest score was given the utilization of technical equipment.

Conclusions:

Staff procedure skills can be measured during simulations exercises. A logging system may lead to enhancing areas requiring improvement.
Genetic parameters of purebred and crossbred Milking Criollos in tropical Mexico
Authors: de Alba J. , Kennedy B. W.
Published: August 2016

Records on total of 1746 calvings of principally Milking Criollos and their crosses were collected between 1972 and 1990 at the experiment station of the Mexican Association of Animal Production on the Gulf Coast of Mexico. Traits of interest were 305-day milk yield, days in lactation, number of services per lactation (raised to power 1/2), age at first calving and lifetime milk yield. Data were analysed by restricted maximum likelihood (REML) under an individual animal model based on 584 animals of which 146 were female ancestors and 35 were male ancestors. Heritabilities of 305-day milk and age at first calving were 0·17 and 0·07, respectively, but heritabilities of other traits were close to zero. Genetic trend in the Milking Criollos for 305-day milk was small and not significant (0·76 (s.e. 2·38) kg/year). Of crosses with Criollo sires, those involving Holstein and Canadienne breeding had highest 305-day and lifetime milk yields and those involving Brown Swiss and native Mexican (mostly Oaxaca) had lowest yields. Jersey crosses were intermediate for 305-day yield. The F1 Criollo × Jersey cross had highest lifetime yield, but backcrosses involving Jersey breeding were poor for lifetime milk. Additive breed effects for Jersey and Canadienne, relative to Milking Criollo, were 88 (s.e. 91) and 227 (s.e. 74) kg 305-day milk, respectively. Heterosis was 144 (s.e. 55) kg (11·6%) for 305-day milk, 16–4 (s.e. 9·6) (5·0%) for days in milk, −0·107 (s.e. 0–042) (7·7%) for number of services per lactation raised to power 1/2, −25·6 (s.e. 41·4) days (2•3%) for age at first calving and 1789 (s.e. 664) kg (60·0%) for lifetime milk. A plan was designed to develop a nucleus breeding scheme utilizing multiple ovulation and embryo transfer technology (MOET) for the genetic improvement of the Milking Criollo breed in Mexico.
Additive response to selection adjusted for effects of inbreeding in a closed dairy cattle nucleus assuming a large number of gametes per female
Authors: de Boer I. J. M. , van Arendonk J. A. M.
Published: August 2016

Inbreeding leads to reduction of the additive variance, whereas inbreeding depression reduces the performance of milk producing cows in both the nucleus and the commercial population. In this study, the cumulative additive response to 30 years of selection corrected for variance reduction due to inbreeding and inbreeding depression in the commercial cow population (denoted as expected phenotypic level or P) was evaluated in a closed (1024 cows tested per year) dairy cattle nucleus scheme, assuming a large number of gametes available per female. No dominance effects were simulated nor estimated in the nucleus. Various hierarchical and factorial designs with fewer sires than dams, an equal number of sires and dams, or even a larger number of sires than dams were compared for P. The trait considered was overall economic merit for milk production with a heritability of the unselected base population of 0·30. Sires and dams were selected on their animal model estimated additive effect for the trait considered at either 15 or 27 months of age. All full-sibs were available for selection. In the absence of inbreeding depression, a complete factorial scheme with more sires than dams resulted in the highest P. With increasing inbreeding depression, the optimal number of sires increased relatively more than the optimal number of dams. Increasing the number of sires decreased inbreeding relatively more than increasing the number of dams, and resulted in a relatively higher P. This is due to the fact that correlations between estimated additive effects of male selection candidates are higher than between those of female selection candidates.
The effect of body condition and previous nutrition on the herbage intakes of ewes grazing autumn pastures at two sward heights
Authors: Sibbald A. M. , Kerr W. G.
Published: August 2016

To examine the effects of body condition and previous nutrition on the herbage intake of ewes grazing swards of different heights in autumn, 96 Scottish Blackface X Border Leicester ewes with a wide range of body condition (score 1·75 to 3·50), were initially housed and given 50 g dry matter (DM) per kg metabolic live weight (M)0·75 per day (treatment L) or 95 g DM per kg M0·75 per day (treatment H) of a pelleted dried grass diet (11·6 MJ metabolizable energy per kg DM) for 6 weeks after weaning in July. The H ewes gained more live weight (9·0 v. 2·7 kg) and body condition score (0·39 v. 0·17) than the L ewes. Half the animals from each treatment were then allocated to each of two ryegrass pastures with a sward height of 5 cm (LS) or 10 cm (HS) for a further 6-week grazing period. During the grazing period there was no significant effect of indoor feeding level on herbage intake, but the L ewes gained more live weight (6·4 v. 5·0 kg) than the H ewes. On the HS, compared with the LS sward, mean herbage intakes were higher (70·0 v. 60·5 g DM per kg M0·75) as were gains in live weight and condition score (7·9 v. 3·4 kg; 0·18 v. 0·0). There were no interactions between the effects of sward height and previous feeding level on herbage intake. Ewes in low body condition (< 2·5) at the start of the grazing period ingested the same amount of herbage on both swards (70·3 g DM per kg M0·75) whereas ewes in high body condition (> 2·5) ingested more (67·0 v. 51·6 g DM per kg M0·75) on the HS compared with the LS sward. The responses of ewes in low and high body condition to different sward heights are discussed in relation to appetite drive and aspects of grazing behaviour.
Lipid composition and metabolism of subcutaneous fat in sheep divergently selected for carcass lean content
Authors: Cameron N. D. , Bishop S. C. , Speake B. K. , Bracken J. , Noble R. C.
Published: August 2016

Fatty acid synthetase and lipoprotein lipase activities, lipid content of adipose tissue and the fatty acid composition of subcutaneous fat, sampled by biopsy at the 13th rib, were measured in 20-week-old rams from lines of Texel-Oxford (TO) and Scottish Blackface (SB) sheep, both divergently selected for carcass lean content. A total of 150 animals were measured, with close to equal numbers of animals per selection line-breed combination.

In both breeds, the high (lean) selection lines had significantly lower backfat depths (TO : 0·5 mm and SB : 0·6 mm, s.e.d. 0·2) than the low (fat) lines. The lipid content of subcutaneous fat was 65 mg lipid per g fat tissue wet weight (s.e.d. 24) greater in TO rams than in SB rams. The TO low line had a higher lipid content than the high selection line (426 v. 448 (s.e.d. 36)) and although the SB selection lines did not differ, the selection line with breed interaction was not significant. SB rams had higher fatty acid synthetase activity (3·1 v. 2·6 (s.e.d. 0·3) on a log scale) but there were no differences between selection lines. Lipoprotein lipase activities were similar between breeds and selection lines. The lower concentration of myristic acid (C14:0) of TO rams compared with SB rams (0·9 (s.e.d. 0·3)) was the only breed or selection line difference which was statistically significant for fatty acid composition of subcutaneous fat.

Lipid content of subcutaneous fat and lipoprotein lipase activity were highly correlated and both were positively correlated with performance test traits, especially with backfat depth. The correlation between backfat depth and fatty acid synthetase activity was not different from zero. Performance test traits, lipid content of subcutaneous fat and lipoprotein lipase activity were positively correlated with the unsaturated fatty acids, with the exception of C18 :1 when correlations were negative.
Granadina kid goats v. Segureña lambs: food intake and performance during milk feeding from birth to 60 days
Authors: Sampelayo M. R. Sanz , Prieto I. , Lara L. , Extremera F. Gil , Boza J.
Published: August 2016

The morphological development of the sheep and the goat is different and this difference is manifested from early post-natal life. The main characteristic of kid goat carcasses is their low adipose tissue, and this is considered detrimental to quality. In an attempt to determine the nutritional causes of this, a study was performed with kid goats of the Granadina breed and lambs of the Segureña breed. Six kid goats and six lambs were slaughtered at birth, while a further eight kids and eight lambs were fed a milk replacer to satiety until the 60th day of life and slaughtered on the 61st day. Dry matter (DM) and metabolizable energy (ME) intakes and apparent digestibility of energy were determined in four balance periods between 8 and 60 days of life. From the intakes of ME and comparative slaughter data it was possible to calculate energy retention (ER), heat loss (HL) and energy retained as protein (ERp) and as fat (ERf) for kids and lambs. Kid goats showed a similar apparent digestibility of energy to lambs but had lower DM and ME intakes per kg metabolic body weight (M0·75) than lambs. For kids and lambs respectively these values were: 0·93 and 0·94; 45·4 and 50·1 g/kg M0·75 per day; 937 and 1033 kJ/kg M0·75 per day. Mean values for ER, HL, ERp and ERf rates were: 263, 674, 131 and 132 kJ/kg M0·75 per day for kid goats and, 343, 690, 132 and 211 kJ/kg M0·75 per day for lambs. Together with the different intake, kid goats showed a lower rate of ER and overall, a lower rate of ERf than lambs.
A note on the effect of forage type on the yield, chemical composition and clotting properties of milk
Authors: Coulon J. B. , Garel J. P.
Published: August 2016

Twenty-five primiparous cows in mid lactation were used in a 2 × 2 Latin-square design experiment. During each 3-week period, cows were offered a diet composed either of grass silage (8.3 kg dry matter (DM) per day) or hay (10.5 kg DM per day). Each diet was supplemented with a mixture of barley, soya-bean meal and urea in proportions calculated to keep the overall rations isocaloric and isonitrogenous. Cows offered grass silage produced more milk (+1.7 kg/day,P<0.01) with less fat and protein (−1.3 g/kg and −0.8 g/kg, respectively,P< 0.01) than those offered hay. All animals gained weight, but they gained more with the hay diet than with the grass silage diet. The rheological parameters of milk were similar in both groups. Rumen juice of cows offered hay had higher concentrations of acetic acid and slightly lower concentrations of propionic and butyric acid (P< 0.01) than cows offered grass silage.
New advances in cloning and their potential impact on genetic variation in livestock
Authors: Woolliams J. A. , Wilmut I.
Published: August 2016

Cloning has advanced through the recent demonstrations that it is feasible to produce, in principle and with significant effort, an unlimited number of individuals of identical genotype from differentiated cell lines that have been frozen and thawed. These advances have been based upon understanding the importance of interactions between the stage of the cell cycle of both the oocyte and donor cell for the success of the nuclear transfer. Whilst the impact of the biological advance is immense for biomedicai applications, the significance is less clear for livestock breeding. In our view the scientific issues for breeding programmes lie in whether clones can increase genetic progress without a cost to biodiversity. Biodiversity within a species may be categorized as: (i) betvjeen-breed variation; (ix) genetic variation among parents within breeds; (iii) genetic variation among individuals within a farm; and (iv) allelic variation within an individual. In the face of a rapid global decline in breed diversity, cloning, in particular cloning of adults, may be an important route to protect biodiversity since it may allow far more genetic variation to be made available for new breed development in the future than is practicable at present. For variation among parents, the judicious use of clones may give significantly faster rates of progress without increasing the rate of loss of genetic variation and furthermore can help improve traits associated with health and welfare which are at present less tractable than, say, milk yield. Local diversity within a farm may be greatly affected if cloning is utilized to disseminate genetic progress widely and more answers are required on the importance of genetic variation within any one locality either in buffering diseases or ameliorating other management problems. Experience from clonal forestry can provide some indications but now there are models capable of answering this question directly in livestock. Allelic variation within individuals per se is not generally advantageous but at loci where it is identified to he beneficial, the use of cloning may exploit it more widely.
Effectiveness of short-term progestogen primings for the induction of fertile oestrus with eCG in ewes during late seasonal anoestrus
Authors: Ungerfeld R. , Rubianes E.
Published: August 2016

Two hundred and seventy-seven ewes were used in three experiments during late seasonal anoestrus to evaluate short-term progestogen primings for equine chorionic gonadotropin (eCG)-induced oestrus. In experiment 1, medroxy-progesterone acetate (MAP) sponges were inserted for 6, 9 or 13 days in nulliparous ewes. Percentage of ewes in oestrus (92.3, 85.7 and 96.4%, respectively) and conception rates (66.7, 75.0 and 63.0%, respectively) did not differ among groups (T > 0·05). In experiment 2, MAP sponges were inserted for 1, 2, 3, 6 or 12 days in multiparous ewes. Percentages of ewes in oestrus were higher with 3, 6 or 12 days than with 1 or 2 days of priming (72.2, 93.8 and 87.5% v. 25.0 and 33.3% respectively, P < 0.05) and maximum response was with 6-day priming. From both experiments we conclude that short-term progestogen (6 days) priming is as effective as long-term traditional primings for inducing oestrus. In experiment 3, level of progestogen priming was compared among treatments using a new progesterone releasing device (CIDR) for 6 days, a 6-day used CIDR for 6 days, or an 11-day used CIDR for 6 days. While percentages of oestrous response were similar among groups (95.9, 93.6 and 88.9%, respectively), pregnancy rates were higher with a new CIDR than with one that had been used for 11 days (57.1% v. 27.8%, P < 0.05), with the 6-day used CIDR being intermediate (51.1%). We conclude that a 6-day progestogen priming combined with eCG can be used successfully to induce fertile oestrus in seasonal anoestrous ewes if progestogen levels during priming are kept sufficiently high.
Eating traits in relation to performance and carcass traits of restrictedly fed group-housed finishing pigs
Authors: Ramaekers P. J. L. , Swinkels J. W. G. M. , Huiskes J. H. , Verstegen M. W. A.
Published: August 2016

Seventy-two crossbred barrows (28.7 ± 0.3 kg live weight (LW)) were used to examine whether there is a relation between eating traits, and performance and carcass traits in ad libitum and restrictedly fed group-housed pigs. The experiment included two replicates, each consisting of 36 pigs. From day 1 to 42, all pigs were maintained with free access to a starter diet containing 12.7 MJ metabolizable energy (ME) and 8.2 g ileal apparent digestible lysine per kg. The experimental period was from day 42 (55.9 kg LW) to the end of the experiment (110.2 kg LW). The pigs in treatment 1 were maintained with free access to a high (H) energy diet (13.1 MJ ME and 7.1 g ileal apparent digestible lysine per kg). For pigs in treatments 2 and 3 the daily energy allowance per pig was restricted to 18 MJ ME above the daily energy requirement for maintenance using diet H, and a low (L) energy diet (12.5 MJ ME and 6.7 g ileal apparent digestible lysine per kg), respectively. The weekly measured LW was used to compute the energy requirements for maintenance (M = 0·719 MJ ME × LW (kg)0.63). Daily food intake and eating traits per pig were determined using transponders and an electronic feeding station equipped with an antenna.

Daily energy intake of the ad libitum and restrictedly fed pigs was correlated with growth and lean meat tissue content of the carcass. In the pigs given food ad libitum, daily energy intake was correlated with daily feeder visiting time, time per meal and food intake per meal, but not with number of meals per day and rate of food intake. In the restricted treatments, number of meals per day was correlated with energy intake, but not with lean tissue content of the carcass. In conclusion, number of meals per day explained part of the variation of lean tissue content of the carcass in ad libitum, but not in restrictedly fed group-housed pigs.
The genetic evaluation of UK Holstein Friesian sires for calving ease and related traits
Authors: McGuirk B. J. , Going I. , Gilmour A. R.
Published: August 2016

Records were analysed on more than 75 000 calvings by 685 Holstein-Friesian bulls tested in commercial dairy herds in England and Wales. The data were collected from 1988 to 1994. The traits analysed were the degree of difficulty at calving, assessed from no difficulty to serious difficulty, calf mortality to 48 h, gestation length and a subjective assessment of calf size. Information was available for the percentage Holstein genes in the sire, dam age (heifer or mature), sex of the calf and the year and month of the calving for all records, while lactation number of the dam and the regional location of the herd were also recorded in 1993 and 1994 (14988 records). Estimates of heritability and genetic and phenotypic correlations were obtained for all traits by restricted maximum likelihood (REML) procedures using a sire model, while also fitting the effects of dam age, calf sex, year and season of calving and significant interations.

Heifers had more difficult calvings, higher calf losses and shorter gestations than mature cows while seriously difficult calvings and mortality were higher for male calves (all P < 0·05). Summer months were associated with lower incidences of difficult calvings, lower mortality and shorter gestations. Heritability estimates were 0·05 (s.e. <0·01) for calving difficulty score, 0·45 (s.e. 0·02) for gestation length, 0·02 (s.e. <0·01) for mortality and 0·08 (s.e. <0·01) for calf size score. Heritability estimates for the scored categorical and binomial (mortality) traits were also obtained using threshold model analysis. As expected, these estimates were higher than the REML estimates; 0·12 (s.e. 0.01) for calving difficulty score, 0·08 (s.e. 0·01) for mortality and 0·14 (s.e. 0·01) for calf size score. Calving difficulty score was genetically correlated with calf size score (-0.81), mortality (0.40) and gestation length (0.34) and calf size score was moderately correlated with mortality (-0.40). In all cases, the genetic correlations were stronger than the corresponding phenotypic correlations.

Sire genetic merit was predicted for calving difficulty score and the distribution of these predictions is described. Sire predictions for calving difficulty score on the underlying scale were backtransformed to predict the expected incidence of serious difficulties in future calvings.
The identification of beef sires that produce calves of above average
conformation from dairy cows
Authors: McGuirk B. J. , Christison A. , Going I. , Gilmour A. R.
Published: August 2016

The Ministry of Agriculture, Fisheries and Food routinely publishes price information for 3-week-old beef + dairy calves sold at major livestock auction centres in England and Wales. For the period 1993/94 to 1996/97, there were average price premiums of £51 for male and £38 for female calves classed as ‘first quality’. We have shown previously that choosing an easy calving beef sire for use on dairy cows will generally lead to calves which are smaller in size and of poorer conformation. To enable dairy producers to maximize returns from calf sales, we propose that beef sires be evaluated for the predicted incidence of first quality’ calves, which can be derived from the sire’s evaluation for calf conformation and the breed incidence of first quality’ calves. Dairy farmers may then jointly consider a bull’s predicted merit for calving ease and calf quality when choosing a sire for use in their herd.
Genetic evaluation of Holstein Friesian sires for daughter condition-score changes using a random regression model
Authors: Jonest H. E. , White I. M. S. , Brotherstone S.
Published: August 2016

In dairy cattle type classification schemes, heifers are condition scored (CS) only once during their first lactation. Although genetic analysis of condition-score changes is not possible using an animal model, the data can be analysed as repeated observations on the sire.

CS records for 100 078 Holstein Friesian heifers, the progeny of 797 sires, were available. Sires differed in the shape of the regression of mean daughter CS on stage of lactation at both the phenotypic and genetic level. Genetic analysis was carried out using a random regression model (RRM) which can account for differences between sires in the shape of the CS curves. CS curves for individual sires were modelled using a cubic polynomial.

Heritability estimates for CS at each stage of lactation generally increased through the lactation from 0·20 in stage 2 (days in milk 31 to 60) to 0·28 in later lactation stages. Genetic correlations between CS at different stages were generally high (0·80), with the exception of correlations with stage 1 (days in milk 1 to 30) which decreased to 0·63 with stages 6 and 7, suggesting that CS at stage 1 is under different biological control from CS at other stages of the lactation. Using RRM, sire estimated breeding values (EBVs) for CS at each stage of the lactation were estimated. Sire rankings on EBV at each stage were seen to change through early, mid and later lactation stages.
The influence of sex (boars and gilts) on growth, carcass and pork eating quality characteristics
Authors: Blanchard P. J. , Ellis M. , Warkup C. C. , Chadwick J. P. , Willis M. B.
Published: August 2016

Boar and gilt pigs from three genotypes (with 0, 0·25 and 0·50 Duroc inclusion level) were reared from 30 to 90 kg live weight on seven feeding regimens which involved combinations of diet formulation and feeding level. A diet of conventional energy and protein level (CEP; 14·2 MJ/kg digestible energy, 205 g/kg crude protein, 10 g/kg lysine) and a diet of higher energy and lower protein (HELP; 14·7 M]/kg digestible energy, 166 g/kg crude protein, 7·0 g/kg lysine) were used. One treatment involved feeding the HELP diet ad libitum, with the other six treatments involving feeding the CEP diet ad libitum, restricted, or in combinations of ad libitum and restricted. A total of 721 animals comprising similar numbers of boars and gilts were used to estimate sex differences for growth performance, carcass and meat quality, and eating quality. Tissue growth rates were predicted from regression equations based on P2fat depths or ham-joint dissection, developed from subsamples of animals that were subjected to full-side dissection. Overall when compared with gilts, boars grew faster (838 v. 799 gtday, P < 0·001), had improved food conversion ratios (2·39 v.2-55, P < 0·001) but had similar daily food intakes and lean and subcutaneous fat growth rates. Lean tissue food conversions did not differ significantly between the sexes. Killing-out proportions were higher for gilts (0·766 v. 0·749 , P < 0·001), however P2 backfat thickness and lean proportions did not differ between the sexes. The firmness of the mid-back fat, assessed subjectively and using a penetrometer, was greater for gilts than for boars. The tenderness of pork loin chops, assessed by a trained sensory panel, was judged to be better for boars than for gilts but there was no sex difference in overall acceptability. The fat from boars had a higher level of abnormal odour and boar odour. There was a sex × dietary treatment interaction for boar odour with the HELP diet producing the highest levels and the biggest difference between the sexes for odour scores.
Modelling the impact of livestock disease on production: case studies of non-notifiable diseases of farm animals in Great Britain
Authors: Bennett R. M. , Christiansen K. , Clifton-Hadley R. S.
Published: August 2016

Spreadsheet models were constructed to assess the economic impact of some 30 non-notifiable diseases of farm animals in Great Britain. A standardized methodology and common valuation base were used to derive estimates of the direct costs to livestock production of each disease, separately identifying the costs associated with disease output losses and those relating to disease treatment and prevention. Disease data limitations and uncertainties are incorporated into the estimation procedure. The spreadsheet models are highly transparent with calculations and the origin of parameter values clearly documented. The assessments of six bovine diseases, are presented: BVD, fasciolosis, lameness, leptospirosis, mastitis, and summer mastitis, and full details of the analyses of all the diseases can he accessed on the internet. The models do not consider the wider economic impacts of disease, such as effects on markets, human health and animal welfare. However, the approach is a simple and transparent one which enables exploration of the direct costs associated with a range of livestock diseases and which is easily communicated to policy makers and others.
Diet selection in pigs: choices made by growing pigs when given foods differing in nutrient density
Authors: Ferguson N. S. , Nelson L. , Gous R. M.
Published: August 2016

Two experiments were conducted to corroborate or refute the theory that animals will choose a food that will allow them to use it with maximum efficiency. Pigs have been shown to utilize foods of high nutrient density more efficiently than those of low density, so the choices made by pigs when offered such foods could be used to test the above optimization theory. In experiment 1, 48 Large White × Landrace gilts were used, for an 8-week period starting at 22 kg live weight, while in experiment 2, 48 boars of the same cross but of a genetically improved strain were used from 24 to 60 kg live weight. In both experiments use was made of high nutrient density summit foods which were used alone, or diluted in the ratio 80 summit: 20 milled sunflower husk to provide the low density foods. In experiment 1, the high density diet (HI) contained 7·5 g lysine per kg and 13·20 MJ digestible energy (DE) per kg, whereas in experiment 2 two summit foods were formulated, the first diet (H2) was offered for 3 weeks from 24 kg live weight and the second (H3) followed until 60 kg live weight. Foods H2 and H3 contained 11·0 and 8·40 g lysine per kg respectively and 15·0 and 14·0 MJ DE per kg, respectively. Both experiments made use of a high (H1 and H2, respectively) and a low nutrient density (L1 and L2, respectively) control treatment in which pigs were given ad libitum access to H1 and H2/H3, and L1 and L2/L3 in experiments 1 and 2 respectively (no. =4). In addition, a medium density treatment (Ml) consisting of a 50: 50 mixture of H1 and L1 (no. = 4) was given in experiment 1. Two choice-feeding treatments where used in both experiments, the first in which H1 and H2IH3 were placed in the left bin (CL1 (no. =18) and CL2 (no. = 20), respectively) and the appropriate dilution diet in the right bin, and the second in which H1 and H2/H3 were placed in the right bin (CR1 (no. = 18) and CR2 (no = 20)). There were no differences in average daily growth rates between treatments within experiments but there were significant differences (P < 0·05) in food intakes and efficiency of food utilization (FCE) between treatments. The highest intakes and lowest FCE were obtained on the L1 and L2 treatments while the lowest intakes were recorded on the choice-feeding treatments. There were no significant differences in FCE neither between H1, CL1 and CR1 nor between H2, CL2 and CR2. Only in experiment 1 were there significant differences (P < 0·05) between choice-feeding treatments on the basis of the position of the food bin but there was no preference for a particular position. The results indicated that pigs were able to differentiate successfully between two foods on the basis of their nutrient density, that bin position was not used as a cue in the choice made, that a small amount of the ‘unwanted’ food was consumed throughout the experiment and that the diet selected maximized FCE.
A comparative study of sperm, sexual hormone concentrations and sexual activity in yearling and adult males of the silver fox (Vulpes vulpes)
Authors: Osadchuk L.V.
Published: August 2016

The silver fox is an extreme seasonal breeder with one reproductive season during the year. Males are sexually mature at the age of 9 to 10 months. In the present study reproductive function in yearling and adult silver fox males before and during the reproductive period was examined. The aim was to determine the age-dependent features of their reproductive system. It was found that yearling males mate with a smaller number of females and that their first mating period is shorter compared with adult foxes. A high proportion of yearling males did not mate at all (27%) or their sexual activity was reduced (26%), although the number of pups horn from mating males was normal. During the peak of male sexual activity, the number of spermatozoa in the ejaculate was lower in yearling compared with adult males. However, there was no difference in the number of abnormal forms of spermatozoa between the two groups. There was no significant difference in sperm numbers between sexually active and inactive yearlings. Before the reproductive season, yearling males did not differ from adults in plasma concentration of testosterone, while body and testes weights and level of oestradiol were lower. At the end of the breeding season, yearlings did not differ from adults in any trait. It is concluded that the reproductive capacity of yearling male foxes might he immature before the first breeding seasons but that this immaturity did not decrease their reproductive success.
Influence of sward height and advancing season on rumen fermentation in Merino sheep grazing grass/white clover pasture
Authors: Carro M.D. , Ranilla M.J. , Giráldez F.J. , Mantecón A.R. , González J.S.
Published: August 2016

The study was carried out on a continuously stocked grass/white clover pasture, which was maintained at two sward heights: 3·5 cm (low; LSH) and 6·5 cm (high; HSH). Three oesophageal-cannulated and three other rumen-cannulated Merino sheep were allocated to each of the plots (LSH and HSH) in order to study the effects of sward height and advancing grazing season on rumen fermentation in grazing sheep. Three grazing periods (13 days) were considered: mid June, late July and early October. During each grazing period and after a preliminary period (7 days), samples of the grazed herbage and of grass hay were incubated in nylon bags in the rumen of each sheep for 0, 3, 6, 12, 24, 48, 72 and 96 h. On days 10 and 12 rumen fluid was sampled at the incubation time (11.00 h) and at 3, 6 and 12 h afterwards and pH, ammonia-nitrogen and volatile fatty acids (VFA) concentrations were determined. Sward height did not affect (P> 0·05) the degradation rate of dry matter (DM) and neutral-detergent fibre (NDF) from grazed herbage in any of the considered periods. Animals grazing LSH presented higher (P< 0·05) DM and NDF effective degradabilities (DMED and NDFED, respectively) during October but no differences were found during June and July. HSH grazing animals presented lower (P< 0·05) degradation rates of DM and NDF from grass hay during June and July than those found for LSH grazing sheep, with no differences (P> 0·05) observed during October. Sward height did not affect (P> 0·05) grass hay DMED and NDFED during July but during June and October HSH grazing sheep presented higher (P< 0·05) values. In general, DMED and NDFED from grazed herbage increased with advancing season, the lowest (P< 0·05) value being observed during June. Rumen ammonia-nitrogen concentrations were higher during October than during June and July for both sward heights but values were higher than 200 mg/l at any sampling time during all grazing seasons. Rumen pH values were within the range considered adequate for maintaining a normal cellulolytic activity at most of the sampling times, with the exception of sheep grazing LSH during October. Rumen VFA concentrations were within the range reported for other grazing studies and only a few differences between sward heights were found. Differences in rumen parameters are discussed in relation to both chemical composition of grazed herbage and pattern of intake.
Comparison of energy and protein sources offered at low levels in grass-silage-based diets for dairy cows
Authors: Dewhurst R. J. , Aston K. , Fisher W. J. , Evans R. T. , Dhanoa M. S. , McAllan A. B.
Published: August 2016

Four dietary treatments were based on a flat-rate (5 kg/day) of concentrates with ad libitum grass silage. The concentrates were iso-energetic and iso-nitrogenous, based on either barley or unmolassed sugar-beet pulp and either extracted rapeseed meal (RSM) or a 1: 3 mixture of fish and soya-bean meals (F/S). These diets were offered to 61 multiparous Holstein-Friesian cows in a continuous design experiment from lactation weeks 4 to 22. Milk yields tended to he higher with RSM (25·1v.23·9 kg/day; s.e.d. = 0·64;P< 0·1), whilst milk fat (38·1 v. 40·0 g/kg; s.e.d. = 0·81) and milk protein (30·4v.31·3 g/kg; s.e.d. = 0·41) concentrations were significantly (P< 0·05) lower. There were no significant effects of treatments on the efficiency of conversion of food-nitrogen (N) to milk-N or on N-retention. A lower organic matter apparent digestibility (g/g) was found for RSM-based diets (0·738v.0·763; s.e.d. = 0·0096;P< 0·05). The diets were also offered to four fistulated dairy cows in a Latin-square-design experiment. Concentrate energy source had significant effects on rumen pH (P< 0·05) and ammonia-N concentration (P< 0·01), whilst protein sources had no effect; values were always in the optimal range (pH > 6 and ammonia-N > 50 mg/l). There was a significant interaction effect (P< 0·05) such that the N-degradability of the whole diet, estimated in vivo, was unaffected by energy source for RSM-based diets but highly dependent on energy source for FIS diets. Microbial protein yield was reduced on the RSM-based diets (179v.220 g/day; s.e.d. = 9·6;P< 0·001).