Sigit Bintara

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.

PRODUKSI DAN KOMPOSISI SUSU KAMBING PERANAKAN ETTAWA DI DATARAN TINGGI DAN DATARAN RENDAH DAERAH ISTIMEWA YOGYAKARTA

The objective of this study was to determine the differences of milk production and compotition of Ettawa Crossbred goats in highland and lowland area of Yogyakarta. The study used ten lactating Ettawa Crossbred goats in each area. The areas were Kulon Progo and Bantul Regency. Data environmental condition, feed intake, milk production and milk composition which consisted of milk gravity, fat and protein content were measured three times, those were in the beginning, middle and the end of the study period. Feed intake was measured everyday for 21 consecutive days. Milk production was measured by milking goat every morning and evening. Data was analyzed using One Way-Anova. Nutrient consumption of goat in Kulon Progo was higher than that in Bantul (P<0.05). Mean consumption of dry matter, crude protein, crude fiber and total digestible nutrient of goat in Kulon Progo were 95.98 g; 14.26 g; 14.26 g and 0.06 kg/kg BW 0.75 respectively, while those in Bantul were 86.96 g; 10.87 g; 19.23 g and 0.05/kg BW .,75 . The average production, fat, milk and total solid o f goat milk in Kulon Progo were 501.71 g/day; 4.84%, 4.41% and 13.26% while in Bantul were 419.62 g/day, 6.30%; 3.97% and 14.69% respectively. It was concluded that different areas of highland and lowland resulted differences on milk production and milk compotition of Etawah Crossbred goats due to differerences in feed composition and nutrien consumption.

PENGARUH DOSIS SPERMA YANG DIENCERKAN DENGAN NaCl FISIOLOGIS TERHADAP FERTILITAS TELUR PADA INSEMINASI BUATAN AYAM KAMPUNG

The aim of the present experiment was to study the effect of insemination doses on eggs fertility of native chicken. The insemination doses were used to measured the most comparison efficiency of male and female in one flock. Semen was collected and pooled from 5 cockerels aged 52 weeks. Sperm was diluted with physiological NaCl and divided into 3 parts of final doses. Three treatment doses were 25x10 6 /0.1 ml; 75x10 6 /0.1 ml and 150x10 6 /0.1 ml. A total of 9 hens of native chicken aged 30 weeks used for artificial insemination with 3 treatment doses for eggs fertility trials. The result of the study indicated no significant effect of insemination doses treatment on eggs fertility. Eggs fertility for dose 1, dose 2 and dose 3 were 44.13±20.84; 66.67±23.57 and 58.75±14.36%. In conclusion, insemination doses have no effect to fertility of chicken eggs. (Keyword: Native chicken, Sperm doses, Artificial insemination)