Pairwise pearson correlations were estimated using bodyweight bw and morphological trait measurements namely heart girth hg shoulder height sh and. Therefore their variability in poultry arises due to genotypic and environmental effects and the.
Frontiers Linear Space Requirements And Perch Use Of
Linear body measurement and body weight of poultry research. This study was designed to evaluate the body weight and other linear parameters of marshall broiler for repeatability estimates. The phenotypic correlation estimates for body weight and linear body measurement at 12 16 and 20 weeks of age for the strains are shown in table 7. The phenotypic correlation for body weight and linear body measurement was high and positively significant p001 in nb. A total of one hundred 100 broiler chickens marshall was used in estimating the repeatability of body weight and linear parameters of day old from 2 to 8 weeks of age. Inclusion of three body measurements in an equation resulted in r2 078 and the following equation. 1998 was utilized to predict abw from linear body measurements.
The effect of various factors viz. Pair wise correlation between body weight and the linear body measurements were positive and highly significant r 0166 0697 in males and 0411 0714 in females. Use of body linear measurements to estimate liveweight of crossbred dairy cattle in smallholder farms in kenya m. Body weight bw and. The objective of this study was to determine the practicality of using linear body measurement traits to predict live weight of goats and sheep under communal grazing in three districts of botswana namely central kweneng and kgalagadi. The aim of this study was to investigat e the relationship betw een linear body measurements and age and body weight in indigenous female chickens of the boschveld breed in namibia.
Br strains also observed the same trend except against kl. Period of birth sex dams age and weight at lambing on linear body measurements and adult body weight was studied to standardize the data for estimation of genetic parameters. The parameters measured were body weight bw body length bl heart girth hg wing length wl shank length sl and shank thickness st. The strong relationship between live body weight and other body measurements could be exploited to increase the economic value of the indigenous chicken. Bw g 9300 685 breast cm 485 circumference cm 628 pelvis cm. Determination of live body weights of chickens using the heart girth could earn farmers between 06 and 065 more while buyers will save between 01 and 02per kilogram body weight of chicken thus should be encouraged.
Generally linear or morphometric body measurements could serve as predictors of body weight. Results and disscusion effect of non genetic factors. The best single measurement was pelvis width with an r2 067. Okeyo2 background liveweight lw forms the basis for a range of research and management activities. Multiple linear regression was used to estimate bw from body measurements.
Gallery of Linear Body Measurement And Body Weight Of Poultry Research
