The effect of adding Nigella sativa meal in the rations of Sharabi bull calves on their growing and carcass traits | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 12, Issue 1, March 2012, Pages 19-26 | ||
| Author | ||
| N.M. Abdullah | ||
| Abstract | ||
| Abstract : Fifteen Sharabi bull calves of 182 ± 64 kg. live body weight at 12 months old were allocated into three groups. The first was fed on a control concentrate ration according to N.R.C. 1984 recommendations, containing 15.6% crude protein and 2.75 Mcal ME/Kg., the same previous ration with addition of 7 and 11% of Nigella sativa meal were used in the 2nd and 3rd rations to replace 60 and 100% of the soyabean meal crude protein . The feeding trial continued to the 105 days where the total amount of feed intake and total body gain of the calves were calculated. At the termination of the experiment, body dimensions of all calves were measured. Also four calves of each group were slaughtered and their carcass parameters were taken which included hot and cold carcass weights , edible and inedible portion weight , mesentery and fat pad , subcutaneous fat thickness , rib eye area, dressing percentage , as well as the calculations of meat , fat and bone ratios of the rib region . Pre-slaughter results showed no significant differences were observed in the mean daily body gain and body dimensions as well as in carcass parameters among the three group. Also, the results showed a lower cost of both one Kg body weight gain and one Kg of cold carcass weight produced. However, the values of previous parameters were 11 and 9.4%, respectively of the calves consumed rations contained 7% on Nigella Sativa meal in comparison with calves consumed control ration. It can be concluded that it is possible to add Nigella sativa meal to substitute the soybean meal crude protein in the ration of growing Sharabi bull calves without any adverse effects on their performance and carcass traits, also improve income of fattening. | ||
| Keywords | ||
| Nigella sativa; Calves; Carcass | ||
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