N n 1 ne2 n sample size n population size. Sampled for body weight and linear body measurement traits with a total number of 240 chickens.
Structure And Age Dependent Growth Of The Chicken Liver
Linear body measurement of chicken. Genome wide association study of body weight and feed efficiency traits in a commercial broiler chicken population a re visitation. How do i take body fat caliper measurements. Caliper procedures all calculator measurements should be made on the right side of the body caliper should be placed 1 cm away from thumb and finger perpendicular to skinfold and halfway between crest and base of fold. Permanent marker to obtain the linear body measurements. The number used was determined according to the following expression by yamane 1967. Multiple linear regression was used to estimate bw from body measurements.
Measurements of quantitative traits a total of 240 indigenous adult female chickens were randomly sampled from each household and was determined by recalling methods of the interviewed farmers. Linear body measurement traits have been indicated as the good predictor of body weight in different chicken genotypes including chinese indigenous dagu chicken genotype tyasi et al 2017. Body weight can be predicted from linear measurements breast girth and keel length for crossbred egg type chickens and adeniji and ayorinde 1990 for cobb broiler strain. Linear body measurement traits were assessed from 192 chickens of the four genotypes drawn from 48 households of two agroecologies. Statistical modelling of body weight and linear body measurements in nigerian indigenous chicken. ŷ 7606 0152sl 0057bg 0052wl 0026tl 0221bl where ŷ is the estimated body weight.
In the two commercial broiler strains the relationship between body weight and body girth body weight and keel length and body weight and thigh length were best described by double log. The results indicated that the average age at first egg of all exotic chickens was shorter p005 than that of the local chickens in both agroecologies. Multiple linear regression model relating body weight and linear body measurements of nigerian local chickens is shown below. The coefficients of determination r. Each whole chicken was ground and a portion of ground material of each was used to measure water fat ash and energy content. The best single measurement was pelvis width with an r2 067.
Linear body measurements a total of 400 matured cocks were available for this study out which 357 were normal feathered 23 naked neck and only 20 frizzled. The results indicated that the average age at first egg of all. Linear body measurement traits were assessed from 192 chickens of the four genotypes drawn from 48 households of two agroecologies. Results for body weight traits using mixed linear model.
Gallery of Linear Body Measurement Of Chicken
