THE VALUE OF UREA AS A NITROGEN SOURCE IN FATTENING RATIONS, CONTAINING BAGASSE, FOR LAMBS

Document Type : Research article

Authors

Dept. of Animal Production, Faculty of Agric., Assiut University

Abstract

Fifteen animals of each large and small size Saidi lambs of 7-8 months old were divi ded into 3 equal groups (A, B and C). Group A, B and C were fed on rations contain ing 0,20 and 40% of their digestible crude protein as urea, respectively. All groups were fed bagasse ad libitum. Three digestion and nitrogen metabolism trials were conducted on large groups to determine the effect of urea on digestibility and N-metabolism. Body performance and carcass traits were also studied. The results obtained could be summarized as follows. 1- Increasing the percentage of N as urea in the ration resulted in an increase in
digestibility coefficients of nutrients especially the crude fibre and a decrease
in N retention. 2- Daily gain and growth measures were slightly imp < /strong>roved with increasing the urea
level. The differences between treatments and size of animal were not significant. 3- Bagasse can be used as a roughage feed in the rations of fattening lambs. 4- Dressing p < /strong>ercentage did not differ significantly between treatment groups and
size of animals. 5- The source of N in the ration or size of animal had no significant effect on the
percentage of carcass joints. 6- Physical composition of the carcass was not affected significantly by treatment.
However, large animals had higher fat p < /strong>ercentage as compared to stall ones.

Files

Share

How to cite

Statistics