Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094

January 2015 Vol. 4(1): pp. 006-016

Copyright © 2015 Global Advanced Research Journals

 

Full Length Research Paper

 

Effect of Weight Asymmetry on Growth Performance, Carcass Characteristics and Economic Analysis in Pigs

A.B.M. Rubayet Bostami1,2, S. Tabasum Ahmed1, Md. Manirul Islam1, H. Seok Mun1, Y. Jeong Seung1, Chul-Ju Yang1*

 

1Department of Animal Science and Technology, Sunchon National University, 255 Jungangno, Suncheon, Jeonnam 540-950, Republic of Korea.

2Department of Animal Science and Nutrition, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh.

*Corresponding Author’s Email: yangcj@scnu.kr   

 

Accepted 10 January, 2015

 

 Abstract

Weight deviation groupings were investigated for growth performance, digestibility and carcass characteristics in pigs. One hundred twenty crossbred pigs (Landrace × Yorkshire) of similar age were assigned to 3 treatments groups based on body weight with 4 replications having 10 pigs per replication for 10 weeks. The treatment groups were- 1) MW= Mixed weight group of heterogeneous high and low weight pigs, 2) HW = High weight group of homogeneous high weight pigs and 3) LW = Low weight group of homogeneous low weight pigs. Results revealed that body weight gain was higher (p<0.05) in the homogeneous group (HW and LW) compared to heterogeneous group (MW), however, feed intake and feed efficiency was statistically not different. Higher aggressive behavior was found among the individuals of heterogeneous group compared to homogeneous group. In addition, digestibility of DM of homogeneous group showed higher value (p<0.05) compared to heterogeneous group (MW) while digestibility of nitrogen was not significantly differed. Furthermore, warm carcass weight, dressing percentage and back fat thickness was significantly higher (p<0.05)in homogeneous group (HW and LW) compared to heterogeneous group (HW).Better carcass quality and yield grade was found in case of homogeneous group but there were no significant differences among weight groups. Economic analysis indicated that per unit of body weight gain of homogeneous group was better than the heterogeneous group (p<0.05). In conclusion, weight grouping might be applicable for better management for obtaining uniform slaughter weight group, better growth and carcass characteristics, and ensure animal welfare.

Keywords: Body weight, Carcass quality, Digestibility, Economy, Growth performance, Pig.

 

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