A comparative Study between Two Baggara Tribe Cattle Subtypes (MessariandNyalawi)on Feedlot Performance and Carcass Characteristics

Abstract

The study was conducted to compare between two Suptypes Baggara Cattle (Messari and Nyalawi) .Twenty-four Sudanese Baggara subtypes bulls (Nyalawi and Massari) were chosen and are divided into two groups, according to subtypes, (Twelve animals for each subtype group). Each animals group was subdivided into Four groups three animals each. The age ranging between 1.5-3years and the initial weight was 200±5 kg . During the experimental period the animal were fed adlibitum molasses feed and 2Kg ∕ head/ day sorgum straw and 2Kg Medicago Sativa weekly. At the end of fattening period which extended (70 days) random selected six animals of each group were slaughtered serially containing .Four animal per day were slaughtered two of each subgroup. All the body measurement were not significantly different ,but the Messari bull showed longer body length, height at rump and face length While Nyalawi subtype showed wider .heart girth around the hump, height at weither and chest depth.. All reported data for non-carcass showed no significant difference (p>0.05) between the two subtypes, but the Messari subtype showed higher omental and Messentric fats while the Nyalawi subtype revealed heavier gastro intestinal tract and hence gut fill. Messari Cattle subtype revealed higher percentage of Genitalia, tail, lung & trachea and blood. Carcass data. Showed no significant difference (p>0.05) between the two subtypes in slaughter and Empty body weight and Carcass weight. The dressing percentage was higher in Messari than Nyalawi for Hot and chilled carcass weight on. Chiller Shrinkage was higher in Messari Cattle Subtype. Nyalawi Showed higher eye muscle area where kednies fats were heavier in the Messari subtype.

Carcass yield of Whole sale cut represented as percentage Of carcass weight .All whole sale cuts recorded showed no significant difference ( p>0.05) between Messari and Nyalawi Cattle Subtypes ,but Messari Cattle showed higher percentage for Neck, Shin, thick ribs, thin ribs, brisket, leg, hind quarter flank, top side &silver side, rump and sirloin. While Nyalawi bulls showed higher percentage of Clod, chuck & blade, extended roasted ribs and thick flank. Meat chemical composition of two Baggara Cattle Subtypes Moisture content showed no significant difference (p>0.05) between the two Baggara Cattle Subtypes, but the Nyalawi showed higher moisture content. Protein percentage was not significantly different. There were highly significant difference (p<0.01) for muscle fat content Where Messari bulls showed higher fat content of meat . While Ash content revealed no significant difference (p>0.05) . Meat Color, Water holding capacity ,ph and cooking loss showed no significant difference in color (p>0.05) but the Messari Subtypes showed slightly higher yellowness colour intensity than the Nyalawi. Messari showed improved cooking loss than the Nyalawi bull. Carcass measurements all parameters measured showed non-significant difference between the two Baggara Cattle Subtype studied.