Effects of Replacing Maize with Boiled Mango (Mangifera Indica Linn) Seed Kernel on the Growth Performances and Carcass Characteristics of Broiler Chickens
No Thumbnail Available
Date
2020-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
An investigation was undertaken to study the effects of replacing maize with boiled mango seed kernel (BMSK) on the growth performance parameters and carcass yield characteristics of Hubbard broiler chicks. The experiment was arranged in a completely randomized design with four treatments, each replicated three times with 13 birds each. One-hundred fifty six day-old chicks with similar body weight (BW) were used for this trial and were randomly distributed to the four treatment diets. The four treatments were control (T1) (100% maize + 0% BMSK), T2 (95% maize + 5% BMSK), T3 (90% maize + 10% BMSK) and T4 (85% maize + 15% BMSK). The chicks were weighed at the start for initial BW for which the experiment was lasted for 7 weeks during which daily feed intake and weekly BW were measured. At the end of the experimental period, 2 chicks from each replication were randomly selected and slaughtered to evaluate the effect of BMSK on carcass yields. The results on average daily feed intake per bird for T1 and T2 was 71.38 and 70.82 g, respectively and this difference was not significant (p>0.05) between them but it was significantly (p<0.05) higher than that of T3 and T4 which was 68.13 and 68.23 g. At the end of 7 weeks, the final BW of chicks fed on T1 and T2, was 2657 and 2644 and this difference was not significant (p>0.05) between them but it was significantly (p<0.05) higher than that of T3 and T4 which was 2610 and 2603 g per bird, respectively. The Average daily BW gain (ADG) for the respective T1 and T2 was 53.4, 53.15 and was significantly (p<0.05) higher than that of T3 and T4 which was 52.44 and 52.31 g per bird. The feed conversion ratio (g feed/g gain) for T1 and T2 was 1.36, 1.36 and was significantly higher than that of T3 and T4 which was 1.33 and 1.33 g per bird, respectively. The dressing percentage of T1, T2, T3 and T4 was 80.85, 80.80, 80.33 and 82.24, respectively. Except for breast meat and heart weight, no significance differences were observed in all carcass traits and visceral organs between chickens fed on control diet and treatment diets. Chickens fed on control diet had significantly higher breast meat, heart and abdominal fat weight than those of treatment diets. Mortality was not (p>0.05) significant across all treatment and control groups and it was 2.5% in T1, 5% in T2, 2.5% in T4 and no mortalities were observed in those chickens fed on T3 diets. The partial budget analysis indicated that replacement of maize up to 15% with BMSK gave reduced feed cost per BW gain and a similar net return. Therefore, BMSK up to 15% can replace maize in broilers ration without affecting nutrient intake, growth and net return.
Description
Keywords
Boiled Mango Seed Kernel, Broiler chicken, Carcass traits, Growth performance, Partial budgeting