Pengaruh Pemberian Pakanberbeda Kualitas terhadap Produksi Protein Mikroba Rumen pada Kambing Kacang Jantan

A research was carried out to investigateproduction of microbial nitrogen production in the rumen of kacangbuck given feed of different quality. Fifteen kacangbucks, 6-18 months old, with initial body weight of 14.28 +3.36 kg (CV = 23.55%), were used in this research. The feed stuffs used in this research were napier grass, soybean meal, cassava by product and rice bran that were formed into a mash. This research used a randomized block design with 3 different feed treatments and 5 groups of initial body weight. The feed treatment applied was the content of dietary crude protein (CP) and total digestible nutrients (TDN), i.e. T1: 9.20% CP and 54.67% TDN, T2: 11.67% CP and 58.61% TDN, and T3: 18.33% CP and 65.23% TDN. The results showed that microbial nitrogen production was not significantly different (P>0.05) among the treatments, averaged 5.01 g/day.On the other hand the efficiency of microbial nitrogen production (EMNP) was significantly different (P<0.05) among the treatments; EMNP of T1: 18.47 g N/kg digestible organic matter (DOM) was higher thanthose of T2: 14.10 g N/kg DOM and T3: 13.00g N/kg DOM. The conclusion from this study is that feeding the feed quality 9.20% CPis able to support the performance of microbes in the rumen of kacangbuck