Abstract:
Thirty western Sudanese Baggara bulls ranging between 200 to 350kg live weight fattened .
The bulls were selected from commercial herd at the animal production research center (kuku), Khartoum North, According to the program of animal production research center, the bulls were fed adlibitum on a concentrate molasses diet and sorghum straw at the rate of 80% and 20% for the two diet fractions , respectively. The animals were divided in to three groups of ten animals in each group according to their slaughter weights (200, 240 -300 and 350 kg ).
Analysis of variance were conducted to examine the effect of
Slaughter weight on both carcass and non carcass components.
In this study non-carcass components, the weight of the external, internal non-carcass components increased significantly (p<0.001) as the slaughter weight increased, but there are no significant difference in both diaphragm and Abumasum Empty .The percentage of external and Internal non carcass Components increased significantly (p<0.001) as slaughter weight increased with exception of genitalia and intestine full and empty where there was no significant difference.
The carcass linear measurements showed a significant (p<0.001) increased with increased of slaughter weight . The measured of neck length, carcass length , leg circumference ,shin
Vii
and shoulder , showed highly significant (p<0.001) differences
between the three groups of bulls. Leg length showed no significant differences between three groups .
The dressing percentage increased significantly ( p < 0.001 ) as the slaughter weight increased . Percentage of carcass shrinkage after 24 hrs chilling (4 C) decreased
(p < 0.001 ) as the slaughter weight increased. The recorded values of shrinkage was a decreased from 3.22% to 2.82% and 1.98% of slaughter weight at 200kg ,240-300 kg and 350 kg ,respectively .
Wholesale cuts weights and percentage showed a significant increased (p<0.001) difference between three groups with exception of thick ribs where no significant difference with live weight observed.
