Title : Cottonseed meal on the growth performance, dressing yield, organ development and meat composition in broiler chicken
Abstract:
A feeding trial with broiler chicken was conducted to know the effect of cottonseed meal on the growth performance, dressing yield, organ development and meat composition. A total of 288 day old chicks were considered to be used cottonseed meal as feed additives in broiler diet. The treatments were control (basal diet) and other 5 different levels of CSM powder (1%, 1.5%, 2.0%, 2.5% and 3.0%) with basal diet. The broiler chicks were distributed in 6 different dietary treatments having 48 chicks in each with 4 replications and each replication contained 12 chicks. The experimental design was completely randomized design and the management practices were standard with dietary requirement. All the data were analyzed using SAS statistical analysis software. Highest weight gain (2295g/bird) was obtained in the 2% CSM fed group compared to other dietary groups with the lowest FCR (1.61) among the CSM added groups. The highest European Feed Efficiency Factor (EPEF) was calculated in 2% CSM added group among the cottonseed meal fed groups. The higher the EPEF value, the better the technical performance. The breast and thigh meat content in CSM fed (2%) group was observed 565 g/b compared to control 547 g/b and other CSM fed birds. Addition of CSM enhanced about 1% dressing percentage (74.22%) compared to control (73.20%) except the highest level (3%) of CSM. The values of internal organs were not varied significantly among the dietary treatments except abdominal fat pad. This response indirectly revealed that no negative impact was found after using CSM in the diet. Cottonseed meal has influence on reducing abdominal fat than non-fed CSM group. The crude fat contents in broiler chicken meat were found 2.84% in breast meat and 3.88% in thigh meat in control diet. Addition of CSM reduced the crude fat content in breast meat by 22 percent and in thigh meat by 32 percent compared to control that indicated to lean meat production from broiler chicken. Considering all the parameters it can be concluded that addition of cottonseed meal as it is can be added up to 2% in the broiler diet for maintaining production performance and lean meat production. Keywords: broiler chicken, cottonseed meal, growth performance, dressing yield, meat composition
