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All Journal Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Jurnal Biologi Tropis
Wiryawan, I Ketut Gede
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Other

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The Effects of Nitrogen sources in the concentrates on N utilization and production performances of dairy goats Asih, A Rai Somaning; Wiryawan, I Ketut Gede; Young, Bruce
Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Vol 32, No 1 (2022): April 2022
Publisher : Faculty of Animal Science, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiip.2022.032.01.08

Abstract

Studies in young goats showed that feeding different N supplements did not significantly affect growth rate, rumen digestion, or N metabolism. It is unclear whether this finding is also applicable to lactating dairy goats. This study aimed to evaluate the efficacy of combinations of barley meal with soybean meal, cottonseed meal, or urea in high energy concentrate on nutrient digestion, milk-feed efficiency, milk production, and Nitrogen balance in dairy goats fed on barley hay as a basal diet. Four isoenergetic and isonitrogenous concentrate with different N sources were formulated and fed on lactating Saanen goats in a 4 x 4 Latin square design. The results showed that lactating Saanen goats producing 1.3 to 1.5 litre of milk per day and fed on a concentrate containing 1.7 % N in a high energy diet capable to sustain similar milk protein and N balance as that given concentrate with 2.2 % dietary N. Total nutrient intakes, nutrient digestion, milk-feed efficiency and milk production lactating Saanen goats was not affected by the source of dietary N. The results indicate that including urea in a supplement can maintain a similar level of milk yield, milk protein and milk efficiency in goats as can the feeding of more expensive soybean and cottonseed meals provided there is sufficient readily available dietary energy.
Production Performance of Joper Chickens Fed with BSF (Black Soldier Fly) Maggots Cultivated in Different Media Aprisansoni, Amar; Wiryawan, I Ketut Gede; Maslami, Vebera; Erwan, Erwan; Indarsih, Budi
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.9102

Abstract

The unstable price of animal feed is then carried out to find alternative feed. The purpose of this study was to evaluate the effect of giving maggots raised in different media on the production performance of Joper chickens. Maggots were raised with three different feed media. P1 25% blood, 50% bran, 25% market waste; P2 is the same as P1 24% market waste and 1% rice bran fried foods, and P3 is the same as P1 23% market waste and 2% fried food waste. Experiment Feeding 200 two week-old Joper chickens was done randomly in four treatments. P0 was given self-mixing feed, while P1, P2, and P3 were given additional feed 20% maggot flour in self-mixing feed maggot research results First. The results of the maggot research show that the best media for treatment P2 was BK 95.18%, ash 10.69%, KA 5.1%, LK 17.54%, SK 16.32% and PK 54.35%. The use of 20% maggots in Joper chicken feed has no significant effect on the production performance and percentage of Joper chicken carcasses, but there are tendency on the weight of P2 chicken carcass containing 1% fried waste. It is recommended to use 20% in the second research ration.
Co-Authors Aprisansoni, Amar Asih, A Rai Somaning Budi Indarsih, Budi Erwan Erwan, Erwan Vebera Maslami Young, Bruce