Volume 3, Number 4 (winter 2000)                   JWSS 2000, 3(4): 83-95 | Back to browse issues page


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Nik-Khah A, Abeshet B. Application of Tallow in Ration of Holstein Male Calves. JWSS. 2000; 3 (4) :83-95
URL: http://jstnar.iut.ac.ir/article-1-207-en.html

Abstract:   (23605 Views)

Feed shortage is one of the most important characteristics of Iranian livestock industry. Therefore, the utilization of agricultural by-products in animal nutrition, especially for fattening animals, is of great importance. In order to study the effect of the four rations containing various levels of tallow (0, 2.5, 5, and 7.5%), on the performance of male Holstein calves (MHC), responding to the above treatments 1, 2, 3 and 4, twenty four MHC (191±32.1 kg) at age 6-7 months-old in a completely randomized design were used. The calves were fed individually for 195 days ad libitum.

Average daily gains (ADG) of the MHC fed diets 1, 2, 3 and 4 were 1.56, 1.61, 1.69 and 1.75 kg (P<0.05), respectively. Feed conversions (as DM) were 4.63, 4.31, 41.2 and 3.98 (P<0.05), respectively. Added tallow to the ration did not affect carcass, empty body weight (EBW), but increased warm carcass weight (P<0.05). The dietary treatments did not increase digestibility (D) of dry matter organic matter, crude protein and gross energy either, but decreased D of neutral detergent fiber and increased apparent crude fat (P<0.05).

Full-Text [PDF 596 kb]   (1576 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2008/01/9

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