bluuebunny/crossref_metadata_2025_split huggingface dataset:
PHOSPHORUS AND NITROGEN FERTILIZATION OF SOYBEAN IN THE NIGERIAN SAVANNA
Authors: KAMARA ALPHA Y. , EKELEME FRIDAY , OMOIGUI LUCKY O. , AJEIGBE HAKEEM A. 
Published: August 2011

SUMMARYSoybean (Glycine max) is a major cash crop in the savannas of Nigeria although productivity is typically constrained by poor soil fertility. The objective of this research was to determine the interactive effect of N and P on soybean productivity in the northern Guinea and Sudan savannas of northeast Nigeria. Experiments were conducted using locally adapted early and late maturing cultivars. Two rates of N and three rates of P fertilizer were also compared at both sites over two years. At both sites, pods plant−1 and seed yield were higher in 2006 than in 2007, possibly due to better rainfall distribution in 2006. Nitrogen fertilizer had no significant effect on seed yield or pods plant−1. Application of P fertilizer increased pods plant−1 by 40–66%. Averaged across site and year, seed yield with no P was 1057.2 kg ha−1 while yield with 20 and 40 kg ha−1 P were 1941.0 kg ha−1 and 2371.5 kg ha−1, respectively. No significant interaction effect between N and P fertilizer on seed yield and pods plant−1 was observed. The late maturing cultivar yielded less than the earlier maturity group cultivar in 2007 likely due to moisture stress. For optimum seed yield 40 kg of P fertilizer ha−1 is recommended for soybean production in both locations. Our results suggest that N fertilizer is not critical for soybean production in this area.
EFFECT OF SALINE IRRIGATION WATER ON MUSTARD (BRASSICA JUNCEA) CROP YIELD AND SOIL SALINITY IN A SEMI-ARID AREA OF NORTH INDIA
Authors: SINGH AJAY , PANDA SUDHINDRA NATH 
Published: August 2011

SUMMARYThe groundwater in some parts of north India is generally saline and not suitable for drinking. However, it can be used for growing salt-tolerant crop plants. To explore the potential of using saline groundwater for farm production, a field experiment was conducted at Shahpur village, near Hisar in Haryana State, India, to study the effect of different qualities of irrigation water on mustard (Brassica juncea, cv. RH–30) crop growth, yield, water use efficiency and soil salinity. Treatments consisted of combinations of irrigation with saline groundwater (electrical conductivity (EC) 7.48 dS m−1), and a good quality canal water (EC 0.4 dS m−1) applied either alone, as blends or in alternate applications. In all treatments, canal water was used for pre-sowing irrigation. In mustard cultivation, saline groundwater with an EC of 7.48 dS m−1 can be used safely to supplement all post-sowing irrigations with marginal decline in crop yield. Irrigation with saline groundwater gave a yield as high as 95% of the optimum crop yield obtained with fresh canal water. The temporal variation in salinity showed that mustard yield responds to the average salinity of the soil during the growing season. Thus saline groundwater is a good water source to exploit for supplemental irrigation.
ON THE LOCAL-INDICABILITY COHEN–LYNDON THEOREM
Authors: ANTOLÍN YAGO , DICKS WARREN , LINNELL PETER A. 
Published: August 2011

AbstractFor a group H and a subset X of H, we let HX denote the set {hxh−1 | h ∈ H, x ∈ X}, and when X is a free-generating set of H, we say that the set HX is a Whitehead subset of H. For a group F and an element r of F, we say that r is Cohen–Lyndon aspherical in F if F{r} is a Whitehead subset of the subgroup of F that is generated by F{r}. In 1963, Cohen and Lyndon (D. E. Cohen and R. C. Lyndon, Free bases for normal subgroups of free groups, Trans. Amer. Math. Soc. 108 (1963), 526–537) independently showed that in each free group each non-trivial element is Cohen–Lyndon aspherical. Their proof used the celebrated induction method devised by Magnus in 1930 to study one-relator groups. In 1987, Edjvet and Howie (M. Edjvet and J. Howie, A Cohen–Lyndon theorem for free products of locally indicable groups, J. Pure Appl. Algebra45 (1987), 41–44) showed that if A and B are locally indicable groups, then each cyclically reduced element of A*B that does not lie in A ∪ B is Cohen–Lyndon aspherical in A*B. Their proof used the original Cohen–Lyndon theorem. Using Bass–Serre theory, the original Cohen–Lyndon theorem and the Edjvet–Howie theorem, one can deduce the local-indicability Cohen–Lyndon theorem: if F is a locally indicable group and T is an F-tree with trivial edge stabilisers, then each element of F that fixes no vertex of T is Cohen–Lyndon aspherical in F. Conversely, by Bass–Serre theory, the original Cohen–Lyndon theorem and the Edjvet–Howie theorem are immediate consequences of the local-indicability Cohen–Lyndon theorem. In this paper we give a detailed review of a Bass–Serre theoretical form of Howie induction and arrange the arguments of Edjvet and Howie into a Howie-inductive proof of the local-indicability Cohen–Lyndon theorem that uses neither Magnus induction nor the original Cohen–Lyndon theorem. We conclude with a review of some standard applications of Cohen–Lyndon asphericity.
ON RADICAL FORMULA IN MODULES
Authors: NIKSERESHT A. , AZIZI A. 
Published: August 2011

AbstractWe will state some conditions under which if a quotient of a module M satisfies the radical formula of degree k (s.t.r.f of degree k), so does M. Especially, we will introduce some particular modules M′ such that M′ ⊕ M″ s.t.r.f of degree k, when M″ s.t.r.f of degree k. Furthermore, we will show that, under certain conditions, if the completion of a module M s.t.r.f of degree k, then there is a non-negative integer k′ such that M s.t.r.f. of degree k′. Moreover, we state a corrected version of Leung and Man's theorem (K. H. Leung and S. H. Man, On commutative Noetherian rings which satisfy the radical formula, Glasgow Math. J. 39 (1997), 285–293) on Noetherian rings that satisfies the radical formula.
MONOLITHIC MODULES OVER NOETHERIAN RINGS
Authors: CARVALHO PAULA A. A. B. , MUSSON IAN M. 
Published: August 2011

AbstractWe study finiteness conditions on essential extensions of simple modules over the quantum plane, the quantised Weyl algebra and Noetherian down-up algebras. The results achieved improve the ones obtained by Carvalho et al. (Carvalho et al., Injective modules over down-up algebras, Glasgow Math. J. 52A (2010), 53–59) for down-up algebras.
ON THE SOLVABILITY OF SYSTEMS OF SUM–PRODUCT EQUATIONS IN FINITE FIELDS
Authors: VINH LE ANH 
Published: August 2011

AbstractIn an earlier paper, for ‘large’ (but otherwise unspecified) subsets , , , of q, Sárközy showed the solvability of the equations a + b = cd with a ∈ , b ∈ , c ∈ , d ∈ . This equation has been studied recently by many other authors. In this paper, we study the solvability of systems of equations of this type using additive character sums.
The politics of heritage and the limitations of international agency in contested cities: a study of the role of UNESCO in Jerusalem's Old City
Authors: DUMPER MICHAEL , LARKIN CRAIG 
Published: August 2011

AbstractThis article problematises international heritage interventions in divided cities through exploring UNESCO's role in Jerusalem's Old City. It examines the tension between universal heritage values and protocols and nationalist agendas which often involve politicised archaeological responses. Drawing on comparative case studies of UNESCO-affiliated projects in Fez and Aleppo, and in the violently divided cities and regions of Mostar and Kosovo, it assesses future challenges and possibilities facing UNESCO in Jerusalem. While the article confirms an increased need for an international arbitrator and protector for the city's sacred sites and divided cultural heritage, it also underscores the limitations of UNESCO's legal remit and the political sensitivities which hinder its praxis.
THE FERAL CATRLE OF SWONA, ORKNEY ISLANDS
Authors: Hall S.J. , Moore C.F. 
Published: August 2011

SUMMARYThe feral cattle, currently numbering 33, which inhabit the Orkney island of Swona, are described. Their behaviour while foraging for seaweed is compared with thatof sheep, and aspects of their social behaviour and population structure are compared with what has been observed among the Chillingham white cattle.
THE INDIGENOUS DOMESTIC ANIMAL GENETIC RESOURCES OF UGANDA
Authors: Mbuza F. M. B. 
Published: August 2011

SUMMARYThe author discusses the overall availability and economic role of indigenous livestock resources in Uganda. After a distinct reduction in number during the 80's, there is now an upsurge in the cattle number (4 300 000 in 199 1). The better milk yielding Ankole (Songa cattle) represents nearly half of those cattle, while just over 32% are of the zebu short-horn type (mainly the stocky Nkedi and the large framed Karamojong). The remaining 18% are of the non-distinct Nganda type that probably originated the crossbreeding of the Ankole and zebu shorthorns. While there are no exact data concemin crossbreeding with exotic breeds, it is estimated that there are some 30 000 exotic beef and dairy cattle and around 100 000 crossbreeds. The total goat population remained reasonably stable in recent years (3 700 000 of which 2 000 000 are breeding females). The majority (I 500 000) belong to the distinct smallbodied East Afiican goat type (25–30 kg liveweight), the two other distinct populations being those originating in the Mubende (4 230 000) and the Kigezi (930 000) regions. Both are predominantly black coloured, the Mubende being characterized by a short and fine coathair, the Kigezi being longhaired. All sheep breeds are fat-tailed. The Masai (216 000) is found in the Eastern and Northern part of the country, the Black-head (490 000) in the East and the so-called East Mrican long-tail (257 000) all over the country. The author indicates that there is an indigenous pig type (670 000) and some 1 200 000“village”chickens.
FOUR INTERESTING ENDANGERED BREEDS OF ANIMALS IN CHINA
Authors: Chen You-Chun 
Published: August 2011

SUMMARYThe Zhoushan and Hainan cattle, Hu sheep and Wuzhishan pigs are local domestic populations in China. Their ecospecific characters are unique. Zhoushan and Hainan cattle are different from each other, but both are zebu of the Chinese type, deriving from Indian origins. The distinctive pattern of coat colour for each of these two breeds and some blood serum polymorphisms show to a certain degree common factors with Bali cattle which are descendents of the gaur. Hu sheep are prolific and they are the only breed that shows oestrus cycles all year round in the world. Hu sheep are protected under the in situ conservation programme but still are in a critical situation due to the impact of the fast growing rural economics. There are less than 30 Wuzhishan pigs remaining, of which only 3 are boars. All of them are in ex situ conservation, but special attention is needed to protect them as a breed.
CHARACTERIZATION AND CONSERVATION OF THE MALPURA SHEEP BREED
Authors: Mehta S. C. , Vij P. K. , Joshi B. K. , Sahai R. , Nivsarkar A. E. 
Published: August 2011

SUMMARYObservations were recorded on morphological characteristics, body weights and body measurements of 344 Malpura sheep belonging to nine age groups during a survey conducted in 18 randomly selected villages of three blocks of the Chittorgarh district of Rajastha. The body weights at birth, 1, 3, 6 and 9 months and adult weight averaged 3.3, 6.7±0.88, 12.9±0.71, 16.4±0.71, 21.0±1.00 and 31.4 kg respectively. Height, body length, chest girth, paunch girth, face length, face width, tail length and ear length of adult Malpura sheep averaged 63.6, 66.8, 77.1, 80.9, 20.7, 9.8, 30.3 and 6.3 cm respectively. Sex of the animal had significant effect on weight, height, body length and chest girth at 8 teeth stage. Phenotypic correlations of body weight with height, chest girth and paunch girth ranged from 0.76±0.04 to 0.88±0.03 and regression of weight on these body measurements ranged from 0.63±0.02 to 0.98±0.05.
LES POPULATIONS DE BETAIL PRESENTES AU TOGO
Authors: Hadzi Y. N. 
Published: August 2011

RESUMELe cheptel togolais se compose de bovins, de petits ruminants, de porcins et de volailles. Les deux régions septentrionales et la région centrale du pays abritent plus de la moitié du cheptel bovin. La population de petits ruminants est composée essentiellement d'ovins et de caprins; ces derniers sont principalement concentrés dans les deux régions méridionales où leur viande est plus appréciée que celle des ovins. Les élevages traditionnels de porcins sont répartis dans tout le pays, mais sont plus concentré s dans la région Maritime. La race locale prédomine car l'introduction des races améliorées a été faite sur une échelle très limitée. L'élevage de volailles de races locales est aussi très répandu, mais la densité rapportée au nombre de ménages agricoles est plus élevée dans le nord que dans le sud du pays.
ANIMAL GENETIC RESOURCES IN BOTSWANA
Authors: Senyatso E. K , Masilo B. S 
Published: August 2011

RESUMECet article fait le point sur l'état des ressources génétiques animales du Botswana, notamment après plusieurs années de sécheresse. Sont également présentés les résultats de comparaison des performances des principales races locales entre elles, avec des races importées et avec des animaux croisés. Grâce à leur grande adaptation aux conditions locales, les animaux de race Tswana restent les plus productifs.
ETUDE DES RESSOURCES GENETIQUES CAPRINES DE L'ALGERIE DU NORD A L'AIDE DES INDICES DE PRIMARITE
Authors: Khemici E. , Mamou M. , Lounis A. , Bounihi D. , Ouachem D. , Merad T. , Boukhetala K. 
Published: August 2011

RESUMELes ressources génétiques caprines (CaprahircusL.) d'Algérie n'ont pas fait l'objet d'une attention particulière comparativement au reste des populations de l'espèce du Bassin méditerranéen. En témoigne la méconnaissance de leur degré d'appartenance à l'une des trois catégories de la classification évolutive des animaux de ferme qui comprend espèce sauvage, population primaire - initialement population traditionnelle - et race standardisée. Des données relatives à la variabilité génétique de douze loci à effets visibles sont considérées pour caractériser les populations caprines des Monts Dahra et Aurès. Ces travaux se basent sur l'emploi de deux indices récemment introduits: l'indice de primarité loci en ségrégation (IPs) et l'indice de primarité allèles au locus Agouti (IPa). Les résultats obtenus plaident en faveur de l'appartenance de ces populations à la catégorie de population primaire.
EL CABALLO LOSINO
Authors: Martinez Saiz J. M. , Valera Cordoba M. , Molina Alcala A. 
Published: August 2011

RESUMENEl caballo Losino, Pony sp Losino segun Mason (1960), recibe su denominacion del area oringinal de cria, el Valle de Losa, en el Norte de la provincia de Burgos (España). Se encuentra emparentado con otras razas autoctonas derivadas del tronco Cantabro-Pirenaico: el garrano portugues, el faco gallego, el caballo asturcon, el thieldon, la jaca soriana, el caballo navarro, el pottoka vasco, el caballo de Merens y el extinguido caballo catalan. La Raza Losina mantuvo sus efectivos hasta los anos 50 pero posteriormente, y debido principalmente a la mecanizacion del campo, al cruce con razas de aptitud carnica y con ganado asnal para la produccion mulatera, su poblacion descendio hasta llegar en 1986 a los limites mas criticos de toda su historia. Ese ano, en vista de la alarmante situacion, se inicio el proyecto de recuperacion de la raza creandose posteriormente en Pancorbo (Burgos) el primer Centro de Cria y Seleccion del caballo Losino. En este Centro se viene manteniendo el sistema natural de crianza en libertad. Los animales, una vez que han sido desbravados y domados, vienen utilizados para la equitación infantil juvenil, en enganches y para realizar las rutas ecuestres por zonas rurales y de montaña.
GOAT GENETIC RESOURCES IN INDIA AND THEIR IMPROVEMENT FOR INCREASING PRODUCTIVITY
Authors: Chopra S.C. 
Published: August 2011

SUMMARYGoats have an important place in the Indian economy. There is a need for proper description anid evaluation of existing genetic resources and determining the need for their conservation. The paper explains the philosophy of progeny testing in goats for production of proven bucks. It contains the observations on existing selection programmes and recommendations for an improved system to provide the knowledge required to adapt record keeping and progeny testing technology to the unique Indian environment.
Studies on feed utilization growth pattern and milk composition in Mithun (Bos frontalis)
Authors: Yadav B.P.S. , Verma N. D. 
Published: August 2011

SummaryStudies were conducted on two calves and a pregnant female captured from the forest to assess the feed utilization, growth pattern and milk composition in Mithun (Bos frontalis), a rare bovine species of north-eastern India. The DMI, kg/100 kg body weight was 0.05 with DM and OM digestibility of 56.95 ± 3.68 and 58.46 ± 3.51 percents, respectively, in calves. The growth was more during the May to October months, however, the average growth of 181.26 ± 23.51 g day-1 was obtained during the year on grazing. The Mithun was not a milk yielder, but became accustomed to milking. Fat content in milk varied from 6.8 to 7.8%. The total solids, protein, lactose, ash and solid not fat (SNF) were estimated at 18.0, 4.9, 5.0, 0.8 and 10.7% respectively with COB negative at 4°C. The birth weight of the male calf was estimated at 22.0 kg, and an average growth of 325.14 g day-1 was determined in 214 days with maximum weight gain during the first two months of age.
Phenotypic characterization of the Saudi Arabian Hassawi cattle breed
Authors: Mohammed T. A. 
Published: August 2011

SummaryHassawi cattle breed is a mix of Bos indicus and Bos taurus. The cattle are raised in the Eastern province of the country by farming families in mixed farming system. The breed numbers are declining very fast, from 10 449 head in 1986 to an estimated maximum of 4 500 head at present.The decrease is mainly due to replacement by exotic breeds, the indiscriminate crossing with these exotics, particularly in view of the scarcity of the Hassawi bulls for mating. Animals are small in size, mature body weight 210-270 kg for bulls and 150-200 kg for cows, quite uniform in colour (light red) and body conformation have conspicuously reduced dewlap and umbilical folds and relatively large hump. Animals are heat tolerant, sustain high feed intake under ambient temperature, resistant to many diseases prevailing in the region and cows have good mothering ability. Productivity of the breed in terms of meat and milk is low when compared to that of exotics in high input production environments, but reproduction performance excels that of temperate breeds and zebu cattle.Efforts should be made to stop the decline in the breed numbers and to conserve the breed as an asset for production under harsh environment.
The Betizu Cattle of the Basque country
Authors: Gómez M. , Plazaola J. M. , Seiliez J. P. 
Published: August 2011

SummaryThe Betizu feral cattle breed is considered as one of the most endangered and ancient in Europe. It is native to the Basque Country (Euskadi). A small number survives in Bizkaia, Gipuzkoa (Basque Autonomous Community), the Navarre and the Atlantic Pyrenees Department of France (Lapurdi). This paper describes the origin, habitat, zootechnical characteristics, aptitudes and attributes of this breed. At present, conservation projects have been initiated in order to preserve the remaining populations.
The Criollo Horse in Uruguay
Authors: Vila F. , Valera M. , Molina A. 
Published: August 2011

SummaryThe Criollo horse bred in Uruguay is a direct descendant of the Andalusian horses that were brought to America by the Spanish conquerors. It is not an isolated population. Ever since its coming into existence it has been related to the other populations of the southern countries of South America (Chile, Argentina and Uruguay). It is adapted to the most divergent regions of the continent, evolving through natural selection into a versatile breed, suited in particular for farm work because of its endurance, courage and capacity for recuperation.At the beginning of this century, its existence was endangered because of the tendency of crossing with European breeds. Around this time, breeder organisations appeared in various countries and with them the standardisation of the Criollo horse as a breed. From this moment on, its growth was well maintained and constant, and today it is also being bred in Germany and Italy.
The development and maintenance of animal recording systems in Greece: a case study
Authors: Georgoudis A. , Baltas A. 
Published: August 2011

SummaryAnimal performance recording and breeding in Greece aim at improving milk production of pure-bred cattle under intensive systems and of sheep and goats under semi-intensive or extensive production systems. Although milk recording was established in Greece by the Ministry of Agriculture in 1952, it is only since 1978 that it has been carried out more systematically on larger populations and in the frame of a more specific genetic improvement programme for each animal species and breed. For the application of this programme, close co-operation has been set up among the competent services of the Ministry of Agriculture, the Agricultural Universities of the country and the relevant farmers' organisations which are in the process of being established. Milk is recorded on 61 867 dairy cows (29% of the total dairy population) in 1 425 herds (average herd size 43 cows), 31 611 dairy sheep (0.36% of the total sheep population) in 429 flocks (average flock size 72 ewes) and 3 296 goats (0.06% of the total goats population) in 36 flocks (average flock size 92). The procedures of performance recording and the future planning, aiming at increasing the number of animals and the recorded traits as well as the supporting of the farmers in managing their herds/flocks, are presented.
Conservation and utilisation of the Sahiwal cattle in Kenya
Authors: Muhuyi W.B. , Lokwaleput I. , Ole Sinkeet S.N. 
Published: August 2011

SummarySahiwal cattle are indigenous to Pakistan and India, and were imported to Kenya in 1930s and 1940s. The breed has been developed as a dual-purpose breed and is utilised in smallholder farming systems, beef and dairy ranching in marginal areas of Kenya which form 80% of the country. Conservation efforts include keeping of Sahiwal herds on state farms, individual ranches and the establishment of the Sahiwal semen bank at the Central Artificial Insemination Station at Kabete near Nairobi. Breeding of the Sahiwal has been promoted by the formation of the Sahiwal Breeders Society which has established breed standards for registration of Sahiwal cattle with the Kenya Stud Book.
Relaciones genéticas entre razas ibéricas de caballos utilizando caracteres morfológicos (prototipos raciales)
Authors: Jordana J. , Parés P.M. 
Published: August 2011

ResumenA partir del estudio cualitativo y cuantitativo de 46 caracteres morfológicos, obtenidos a partir de recopilaciones bibliográficas, se analizan las relaciones existentes entre 17 poblaciones equinas de la Península Ibérica (14 razas españolas y 3 portuguesas).Los resultados obtenidos permiten clasificar a las diferentes razas en sus correspondientes troncos ancestrales: Equus ferus gmelini, Equus ferus przewalski y Equus ferus solutreensis, integrándose los representantes de los dos primeros grupos en el llamado Tronco Tarpánico.El promedio de distancia morfológica entre razas, medida como MCD (Mean Character Difference, o promedio de diferencias entre caracteres), tomó un valor de 0,51± 0,11. El análisis cuantitativo de los datos indica que el grupo que forman los poneys ibéricos es morfológicamente muy semejante, a diferencia de lo que ocurre con los grupos de los caballos de silla y los de tiro.Se analizan las relaciones y se discuten las causas de la variabilidad morfológica entre grupos.