Judul: Heritability of Birth Weight, Weaning Weight, and Yearling Weight of Pasundan Cattle
Abstrak: Pasundan cattle is an Indonesia’s local cattle in West Java that has potential to be developed as beef cattle. Genetic quality can be evaluated based on heritability values. This study aims to estimate the heritability values of birth weight, weaning weight, and yearling weight of pasundan cattle in Balai Perbibitan dan Pengembangan Inseminasi Buatan Ternak Sapi Potong Ciamis. The data used were 216 consisting of 91 for birth weight, 76 for weaning weight, and 49 for yearling weight collected from 9 bulls and 58 cows used to estimate the heritability values. Data was analyzed using descriptive statistic and estimation of heritability values using paternal halfsib correlations with nested classification. The mean of birth weight, weaning weight, and yearling weight of pasundan cattle were 18,37±3,48 kg; 87,14±19,01 kg; and 111,40±21,63 kg respectively. Body weight of male and female was not significant different (P>0,05). Heritability values of birth weight and weaning weight have been categorized in high heritability value, 0,39±0,12 and 0,65±0,49 respectively. On the other hand, the heritability value of yearling weight has been categorized as low heritability value, that was 0,04±0,23.
Keyword: weight, heritability, pasundan cattle

Judul: evaluasi potensi genetik sifat pertumbuhan pejantan kambing PE dan Saanen di balai penelitian ternak, Ciawi- Bogor
Abstrak: Etawah Grade (EG) and Saanen goats are two types of small ruminant commonly raised for producing milk in Indonesia. Milk yield can be increased by doing selection programs based on breeding value (EBV) in order to obtain superior bukcs. The objective of this research was to evaluate the genetic quality growth trait of EG and Saanen bucks at the Research Institute for Animal Production (RIAP), Ciawi-Bogor. This research used 136 kids from 8 EG buks and 48 kids from 2 Saanen bucks from RIAP, Ciawi-Bogor. The data came from the recording in 2006 until 2009. Variables measured were birth weight and weaning weight then analyzed by t-test, weaning weight data were standardized to the age of 120 days and corrected to the type of single births and male (Saanen), and corrected to the type of twin births and female (EG). Heritability was calculated by the method of paternal half sibs, and the value of breeding (Breeding Value) was calculated by the Contemporary Comparison method. The results showed that male EG birth weight was 3,20±0,67 kg, while female birth weight was 2,87±0,60 kg. Male Saanen birth weight was 3,31±0,39 kg, while female birth weight was 2,98±0,39 kg. Etawah Grade birth weight in single birth was 3,28±0,69 kg and twins was 2,83±0,53 kg. Saanen birth weight in single birth was 3,33±0,69 kg, and twins was 2,94±0,21 kg. Heritability of EG birth weight and weaning weight were classified as high (0,50±0,34 and 0,56±0,36). Heritability of Saanen birth weight was 0,36 ± 0,68, this value was classified as moderate. Etawah Grade bucks with high breeding value (BV) was the identity number 261 (0,77), whereas that in Saanen buck was the identity number 9021 (0,49).
Keyword: 

Judul: Adsorpsi–fotodegradasi Biru Metilena oleh Nanokomposit Kaolin/TiO2 yang Diemban dengan ZnO
Abstrak: Synthetic dye waste such as methylene blue pollutes aquatic evironment. Kaolin/TiO2 nanocomposite was made for adsorption–photodegradation process under UV light. The nanocomposite was prepared by paste and ball milling methods. Semiconductor ZnO was used as dopant to ease photodegradation in visible-light range. X-ray diffraction results showed that kaolin/TiO2 and kaolin/TiO2/ZnO nanocomposites were successfully made. However, ZnO doping decreased crystallinity of the nanocomposites. Scanning electron microscopy results showed that the surface morphology of the nanocomposite made by using paste method and that of doped nanocomposite made by using ball milling method were different. ZnO doping increased the adsorption capacity of the nanocomposite. Photodegradation results showed that ZnO doping improved the photocatalytic activity of the nanocomposites under UV and visible irradiation. However, the photocatalytic activity of the nanocomposites was relatively better under UV irradiation than that under the visible irradiation.
Keyword: photodegradation, kaolin/TiO2/ZnO nanocomposites, kaolin, adsorption capacity