RT - Journal Article T1 - Application of Tallow in Ration of Holstein Male Calves JF - JSTNAR YR - 2000 JO - JSTNAR VO - 3 IS - 4 UR - http://jstnar.iut.ac.ir/article-1-207-en.html SP - 83 EP - 95 K1 - Calve K1 - Tallow K1 - Average daily gain (ADG) K1 - Feed conversion K1 - Digestibility K1 - Carcass AB - 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 LA eng UL http://jstnar.iut.ac.ir/article-1-207-en.html M3 ER -