Using Nigella sativa meal as a substitute source for vegetable protein in rations of native growing calves
The present study was carried out on 15 growing local bull calves of about 150-200 kg, live body weight and 10-12 months old to investigate the effect of substituting soyabean meal as concentrate feed mixture protein by Nigella sativa meal (NSM) at 0 , 60 and 100%.Animals were divided into 3 groups of 5 calves each, according virginia mill works to