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Sheep are important meat-producing animals worldwide, including Oman. Growth and development are the bases for meat production whereas distribution of carcass tissue is significant in determining carcass quality. Besides the dressed carcass, many parts of the animal body are also consumed (e.g. head, feet, liver, heart, stomach and intestines) or sold (e.g. skin and wool). Omani native sheep have good potential for meat production, reflected by their high growth rates and good carcass characteristics, when raised under optimum management and nutritional conditions [1]. Inclusion of soaked or roasted Mesquite pods at high level in concentrate diets for sheep to improve feed intake and reduce production cost has not been studied. The novelty of this study was to evaluate the effect of incorporating soaked or roasted Mesquite pods at 50% level in formulated concentrates on carcass and meat quality of Omani sheep. The Mesquite-pod-based diets were formulated and pelleted from 500 g/kg ground Mesquite pods, 240 g/kg wheat bran, 200 g/kg barley grain, 50 g/kg local dried sardines and 10 g/kg of salt. Twenty four 10 months-old intact Omani male lambs with average body weight of 27.3 kg (± 0.5 kg) were used in a feeding trial for 84 days. They were allocated to four diet combination groups; commercial concentrate (CC); raw Mesquite pods based concentrate (RMPC); roasted Mesquite pods based concentrate (ROMPC) and soaked Mesquite pods based concentrate (SMPC) group. The sheep fed CC had higher (P<0.05) slaughter weight, carcass weight and empty body weight (EBW) and full digestive tract content compared to both RMPC and SMPC groups but not with those fed ROMPC. There were no significant treatment differences in proportion of hot and cold carcass weight, dressing-out percentage (DOP) and cold shrinkage percentage. There were also no differences in proportions of all non-carcass components in EBW. The carcass characteristics and meat quality indicated no significant differences with an exception that sheep fed with ROMPC and CC had increased carcass weights, and ROMPC fed animals had carcass with higher expressed juice. The present study demonstrated the potential of using Mesquite pods in formulated ration at level of 500 g/kg for growing lambs without adverse effects on carcass characteristics or meat quality.

Carcass and Meat Quality Characteristics of Omani Sheep Fed Diets Based on Raw or Processed Mesquite (Prosopis Juliflora) Pods