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Title: Effects of Supplementing Different Levels of Meat and Bone Meal on Productive Performance, Carcass Characteristics and Hematobiochemical Parameters in Broiler
Authors: Shiblee, Afroja Salehin
Keywords: Blood parameter, carcass characteristics, feed conversion ratio, meat and bone meal, weight gain, commercial broiler
Issue Date: Jun-2018
Publisher: A thesis submitted in partial of the requirements for the fulfillment of the degree of Master of Science in Animal and Poultry Nutrition Department of Animal Science and Nutrition Faculty of Veterinary Medicine Chittagong Veterinary and Animal Sciences University Khulshi, Chittagong-4225, Bangladesh
Abstract: Meat and bone meal (MBM) is a potential source of dietary protein for broiler. One hundred Cobb 500™ unsexed day old commercial broiler chicks were used in a 28-day trial to investigate the effects of different levels MBM on productive performance, carcass characteristics and blood parameters in commercial broiler. Birds were randomly distributed into five dietary treatment groups designated as T0, T1, T2, T3 and T4 and supplemented with 0, 2, 4, 6 and 8% MBM for T0, T1, T2, T3 and T4 treatment groups, respectively. All birds had free access to feed and water. Results indicated that, weekly average weight gain increased significantly (p<0.05) from 15.7 to 24.3 g/d at 1st week, 23.6 to 30.0 g/d at 2nd week, 32.9 to 43.6 g/d at 3rd week and 30.7 to 52.2 g/d at 4th week as the level of MBM supplementation increased from 0 to 8%. The highest average weight gain (52.2 g/d) was recorded in T4 group at 4th week. Similar to weight gain, average weekly feed intake differed significantly (p<0.05) from 1st to 4th weeks of age. Feed intake increased (p<0.05) from 56.4 to 82.2 g/d at 4th week as the level of MBM supplementation increased from 0 to 8%. The highest weekly average feed intake (82.2 g/d) was recorded in T4 group at 4th week. Unlike feed intake, FCR remained unchanged (p>0.05) at 2nd and 3rd weeks but differed (p<0.05) at 1st and 4th weeks. The best FCR (1.56) was recorded in T4 group at 4th week. Drumstick weight (P<0.05), neck weight (P<0.05), breast weight (p<0.001) and ether extract content (P<0.05) increased linearly with increasing levels of MBM supplementation. Supplementation of MBM had no influence (p>0.05) on blood parameters. Total protein differed (P<0.01) at 4th week. It was concluded that, increasing levels of supplemental MBM substantially improved performance parameter and carcass characteristics without interfering hematobiochemical parameters in broilers.
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