Uji Zuriat Pejantan Sapi Perah Fries Holland dan Pengaruh Inseminasi Buatan Terhadap daya produksi Susu di beberapa Perusahaan Peternakan Sapi Perah

Abstract

A study of pmwy tesf wss caxried out on five ddxy farm enterprAacs in West and Middle Java, in 0 ; t . d ~to~ test the superiority of 25 Holstoh Friesian W l a that were us& for aJ pragxam, The study was bmd an 2232 milk production recods of 121 9hedsofmws fmm tp?f 'to 192. The pmgeny test was ddne based on Contemporary Comparison (CC) method. The result showed that CC vkues of 17 bulls wore positive a d that af 8 blls were nemtive. The CC v&uc;s v a i d from -335,33 kg to +I@Q.?T kg, md four hlls lM hi& mpcr~rity. Them was no sidficant dfffrence betwem tho avemge of milk pductilm of ~EJ, offspriqp (3Wb 2 tj2~.5 kg) and of non 81: offaprine (2991.50f 492.5 kg). This rcault weta due t;o the frozen aemm that wars import;& to Indonesia derivd fmn the bulls d c h the aver- of * milk produ&fon of their o f f ~ i p x h p in *eix origin country was 3500 kg per l s t a t i o n p e r i d , wfxereas in Zndonesia there were some dairy fw pduced milk w h i c h the avcxap of 4500 kg per ltzatation period. Tham ww no et sf@f%csnt rmk correlztim between %he degree of mpariorlw of bull8 in their origin country in Indonesia (rs = 0.15)