Digestibility of Ration Added Corn Oil and Lemuru Fish Oil on Female Local Sheep

Abstract

The objective of this research was to compare digestibility of ration added different sources of oil (corn oil, fish oil, and fish-oil protected) on local female sheep. The research was conducted in Stable B of Faculty of Animal Science, PAU Laboratory, Bogor Agricultural University from August 2011 to February 2012. The experiment used twelve post weaning female local sheep aged 3-4 months, with initial body weight of 9.32 ± 2.28 kg. The experiment was arranged in block design with four treatments and three blocks as replications. The block was based on body weight of small (7.00 ± 0.33 kg), medium (9.15 ± 0.53 kg), and large (11.80 ± 1.82kg). Four treatments were P0=control ration, MJ= ration added 1.5% corn oil, MIL= diet ration added 1.5% fish oil and MIT= diet ration added 1.5% fish oil protected. The results showed that P0, MJ, MIL, MIT didn’t affect (P>0.05) the consumption and digestibility of DM, CP, CF, N-free extract, and TDN, although it significantly affected (P<0.01) EE consumption and EE digestibility. It is concluded that adding different sources of oil in female local sheep ration have similar effect on all parameters observed and significantly increase EE consumption and EE digestibility. Ration added 1,5% fish-oil protected has resulted the highest EE consumption and EE digestibility.

Bungkil kelapa merupakan hasil samping dari pengolahan minyak kelapa yang dapat dijadikan bahan pakan sumber protein karena kandungan protein kasarnya yang mencapai 21,3%. Bungkil kelapa banyak mengandung asam lemak jenuh, seperti laurat 45,95%; miristat 18,12%; palmitat 9,92%; stearat 3,78%. Selain dapat meningkatkan kandungan kolesterol pada daging ternak, asam lemak jenuh yang tinggi dapat menurunkan kecernaan bahan kering pada domba. Minyak mengandung energi tinggi yang dapat membantu meningkatkan kecernaan pada ternak ruminansia. Penambahan beberapa sumber minyak, seperti minyak jagung dan minyak ikan lemuru, diharapkan dapat mengurangi beberapa efek negatif asam lemak jenuh bungkil kelapa serta meningkatkan kecernaan. Tujuan dari penelitian ini adalah untuk membandingkan kecernaan zat makanan dari ransum yang ditambah beberapa sumber minyak (minyak jagung, minyak ikan lemuru, dan minyak ikan lemuru terproteksi) pada domba lokal calon induk.