TY - JOUR T1 - Application of Tallow in Ration of Holstein Male Calves TT - کاربرد پیه در تغذیه گوساله های نرهلشتاین JF - JCPP JO - JCPP VL - 3 IS - 4 UR - http://jcpp.iut.ac.ir/article-1-207-en.html Y1 - 2000 SP - 83 EP - 95 KW - Calve KW - Tallow KW - Average daily gain (ADG) KW - Feed conversion KW - Digestibility KW - Carcass N2 - 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 M3 ER -