Growth and carcass composition of commercial broiler chicken up to 56th day of age

Date

12-2011

Degree

Bachelor of Science in Agriculture

Major Course

Major in Animal Science

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Magpantay, Veneranda

Abstract

The study determined the growth and carcass composition of commercial broilers up to 56th day of age. One hundred twenty-five commercial broilers were used and slaughtered weekly starting at 28th day of age. Growth and carcass composition parameters were taken at each slaughter age and were subjected to analysis of variance, and Pearson correlation analysis. Results showed that body weight of broilers continues to increase up to 56th day of age. However, the rate of gain tends to decrease after 28th day of age. Based on feed efficiency, the best time to slaughter broiler was at 35th day of age. Carcass evaluation showed that dressing percentage was not significantly affected by age, unlike the proportions of breast and wings (P<0.05). Females were noted to have significantly (P<0.05) higher proportion of breast while males were observed to have higher proportion of leg. Fat component in thigh, wing, leg, and back parts was also significantly (P<0.05) higher in female broilers. Correlation analysis showed that except for the proportion of wings which showed negative moderate correlation with age, all other cut-up parts were not significantly related with increasing age. Age was found to be significantly related to the proportions of lean in the breast, neck, and back, and proportion of fat, bone and skin. This study shows age and sex-related changes in the growth and carcass composition of broilers raised until 56th day of age.

Language

English

Location

UPLB College of Veterinary Medicine

Call Number

LG 993.5 2011 A5 /T65

Document Type

Thesis

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