Sumadi (Sumadi)

Sperm Quality of Gembrong Goat in Bali Before and After Freezing

This research aims to study the sperm characteristics of Gembrong goat in Bali before and after freezing, using citrate-egg yolk (CEY) and tris-egg yolk (TEY) diluents. The sperm of six goats was collected using an artificial vagina. The results showed that there were no significant differences between the use of CEY and TEY diluents on motility, viability, and abnormalities of spermatozoa neither before nor after freezing. Before freezing, motility was CEY 85 ± 3.5, TEY 85 ± 2.1; viability was CEY 90 ± 3.5, TEY 92 ± 2.1; and abnormalities were CEY 11 ± 3.5, TEY 10 ± 2, 1, while after freezing, motility was CEY 45 ± 3.5 b, TEY 46 ± 4.1; viability was CEY 70 ± 3.5, TEY 72 ± 4.1; and abnormalities were CEY 15 ± 3.5, TEY 16 ± 4.1. However, the freezing process significantly (p < 0.01) lowered sperm quality in terms of motility, viability, and abnormalities, both for CEY and TEY diluents. In CEY diluent, motility before was 85 ± 3.5 and after was 45 ± 3.5, viability before was 90 ± 3.5 and after was 70 ± 3.5, and abnormalities before were 11 ± 3.5 and after were 15 ± 3.5. In TEY diluent, motility before was 85 ± 2.1 and after was 46 ± 4.1, viability before was 92 ± 2.1 and after was 72 ± 4.1, and abnormalities before were 10 ± 2.1 and after were 16 ± 4.1. Dilution and freezing of Gembrong goat sperm using citrate-egg yolk and tris-egg yolk showed no significant differences, but the freezing process caused a decline in sperm quality.

The Estimation of Breeding Value of Rams at Technical Implementation Unit Development Center for Livestock Breeding in Margawati Garut, West Java

The objective of this study was to determine breeding value (BV) of rams of Garut sheep at Technical Implementation Unit Development Center for Livestock Breeding Margawati, Garut, West Java. This research was conducted from April 2014 to October 2014. The materials which were used in this study were data record during the last 5 years (2009–2014) that consists of 55 rams and 579 lambs which have weaning weight data. Weaning weight data has previously been corrected based on the type of birth, sex, and weaning age of 100 days. The BV was estimated using the components of heritability and repeatability value which were previously analyzed. The heritability and repeatability values of this study were 0.45 ± 0.08 and 0.34 ± 0.09. Estimation of heritability for weaning weight was calculated using paternal half-sib correlation, and the repeatability was estimated using interclass correlations method. The breeding value was estimated for the absolute value (NPabs) of rams based on weaning weight of the progenies. There were top 10 of dams with the highest BV. The result was sorted by the highest value to the lowest. The highest BV was 16.37 by the name antasena, and the lowest BV has been reported for wayang (15.45). The result of this study can be used as the basis recommendation for selecting rams in Technical Implementation Unit Development Center for Livestock Breeding in Margawati Garut, West Java.

ESTIMASI OUTPUT BABI DI KABUPATEN TABANAN PROVINSI BALI

Tujuan penelitian ini adalah untuk membuat estimasi output pada babi Bali dan babi Landrace di Kabupaten Tabanan. Penelitian ini dilakukan di lima kecamatan di Kabupaten Tabanan dengan mengambil 150 peternak. Data yang diambil adalah identitas peternak, komposisi, dan reproduksi ternak babi Bali dan babi Landrace. Estimasi output dihitung dengan cara pendekatan teori pemuliaan. Hasil dari penelitian ini diketahui bahwa nilai natural increase babi Bali dan babi Landrace sebesar 60,93 dan 116,38%. Nilai net replacement rate jantan dan betina babi Bali dan jantan dan betina babi Landrace sebesar 7.664,29 dan 1.844,05% serta 15.033,33 dan 1.386,47%. Nilai output pada babi Bali jantan dan betina sebesar 30,78 dan 23,58% atau 360 dan 114 ekor serta jantan dan betina pada babi Landrace sebesar 45,57 dan 70,49% atau 6.722 dan 10.009 ekor. Kesimpulan dari penelitian ini adalah estimasi output pada babi Bali jantan (30,78%) lebih besar daripada babi Bali betina (23,58%), sedangkan pada estimasi output babi Landrace jantan (45,57%) lebih kecil daripada babi Landrace betina (70,49%). (Kata kunci: Estimasi output, Babi Bali, Babi Landrace)