Effect of Different Levels of Rhus Coriaria L. powder in Awassi Lambs Diet on Some Carcass Characteristics

Abstract

This research was conducted in (Good land farm and factory) for meat processing in Samarra in cooperation with Nature Resources Center in Tikrit University. to the period from 1/5/2019 to 1/8/2019. Sixteen Awassi lambs were used in this research average body weight (20 ± 25) kg abought (5.5-6) months. the lambs was divided into four treatments according to Sumac additives : Treatment one was control without Sumac, treatment two 1% Rhus powder, treatment three it was 3% Rhus powder and treatment four was 5% Rhus powder. Ther results showed significant differences in live weight treatment four(42.38 ± 1.73)kg was higher than the other treatments were ( 38.16 ± 1.50)kg (36.64 ± 1.04)kg (34.63 ± 1.53)kg respectively. Significantly was noticed in treatment four than other three treatments in empty body weight, hot and cold carcass weight and dressing percentage. About the main cuts of right half of the carcass, leg cut in treatment four conducted significant differences (3.08 ± 0.12) than other treatments were ( 2.47 ± 0.22)kg (2.45 ± 2.02)kg (2.52 ± 0.10)kg respectively. Loin showed significant differences in treatment four(0.92 ± 0.01)kg compared with control was (0.63 ± 0.07)kg and treatment three (0.67 ± 0.01)kg shoulders and ribs did not recorded significant differences between four treatments. For secondary cuts of right half cuts, fore shank of treatment two was the lowest (0.64 ± 0.029) compared with other treatments were (0.75 ± 0.002)kg (0.68 ± 0.38)kg (0.76 ± 0.023)kg respectively while breast, neck and flank did not recorded significant differences between treatments. Abdominal fat was the highest in treatment four (0.24 ± 0.03)kg while the values in the res treatments were ( 0.08 ± 0.02)(0.17 ± 0.03)(0.07 ± 0.07)kg respectively. kidney and pelvic fat also was high in treatment four (0.26 ± 0.87)kg than other treatments. Finally, rib eye area was conducted high significant differences in treatment four was (10.404 ± 0.302)mm compared with the other three treatments were(7.701 ± 0.503)mm(6.650 ± 0.155)mm(8.752 ± 0.454)mm respectively.