FACULTY OF AGRICULTURE
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Item Effect of rigor state and curing temperature on the processed yield and physicochemical properties of broiler meat(National Animal Production Research Institute, Ahmadu Bello University, Zaria, 2016) Haruna, M. H.; Olusola, O. O.; Olugbemi, T. S.; Ayo, T. S.; Umar, U. A.A study was conducted using 16 (sixteen) half carcasses of broiler chickens with the aim of improving the yield and quality of meat products. The effects of rigor state and curing temperature on yield and quality of smoked-cooked meat were investigated using a 2 x 2 factorial arrangement. The meat was cured pre-rigor and post-rigor in hot and cold brine solution, after which they were smoked for approximately two hours to an internal temperature of 69±1ºC. The results showed that rigor states significantly (P<0.05) affected dry matter, moisture, lipid and nitrite content. Lower moisture (20.23 %) and lipid content (10.37 %) was observed in the post-rigor meat but with higher nitrite content (131.06 ppm). Curing temperatures significantly (P<0.05) affected the yield, dry matter, moisture, nitrite and salt contents of the product. The yield of meat and moisture content was higher in cold cure (14.60 % and 32.68 % respectively) but with a lower nitrite and salt content. Furthermore, the interaction between curing temperature and rigor state was also significant (P<0.05) with post rigor and cold cure interacting best with a yield of 15.88 % and lipid content of 10.35 %. Lowest moisture content was observed in the post-rigor hot cure treatment (15.49 %). Nitrite and salt contents were lower in the pre-rigor cold cure treatment (108.90 and 1.86 % respectively) with also higher ash content (5.62 %). It is concluded that optimum yield can be achieved through cold curing in post- rigor state.Item Antioxidant and antimicrobial activities of African nutmeg, pepper and black pepper extract on the quality and shelf-life of chicken nuggets(Nigerian Society for Animal Production, 2015-03) Haruna, M. H.; Olusola, O. O.; Olugbemi, T. S.A study was conducted using five kilogrammes of manually deboned and comminuted broiler meat to determine the antimicrobial and antioxidant activities of Pepper, Black pepper and African nutmeg extracts on the quality and shelf-life of nuggets stored at 4°C for 12 days in a completely randomised design. The results for the antioxidant effect revealed that lipid oxidation of chicken nuggets were improved by the inclusion of the extracts compared to the control. Total plate count, coliform count and fungal count were significantly (P<0.05) reduced with the addition of African nutmeg extracts during storage. It is concluded that extracts of Pepper, Black pepper and African nutmeg led to retarded oxidative rancidity and microbial growth during refrigerated storage, thereby improving the quality and shelf-life of chicken nuggets.