Prediction of bodyweight from body measurements in rabbits using principal component analysis
Journal Title: Scientific Journal of Animal Science - Year 2014, Vol 3, Issue 1
Abstract
The study aimed atdescribing objectively the interdependence among the biometric traits and topredict body weight from their orthogonal body shape characters using principalcomponent factor analysis. Body weight and ten biometric variables namely bodylength, height at wither, thigh circumference, shoulder to tail drop, earlength, heart girth, tail length, length of front and back leg and nose toshoulder were measured on eight week old 104 F1 progeny Hyla rabbits of twogenetic groups (NZWXNZW purebred and NZWXCAL crossbred rabbits). General linearmodel and principal component analysis procedure of statistical analysis system(S.A.S 9.0) was used to compute the variations between the two breeds. Pairwise correlations between bodyweight and biometric traits were positive andhighly associated (r = 0.60-0.90, 0.62–0.94; P<0.01) for Hyla purebred andcrossbred rabbits. In the factor solution of the principal component analysis,with varimax rotation of the transformation, two factors were identified for thefirst genetic group and three factors for the second genetic group (ratio ofvariance = 83.97 and 89.88% for NZWXCAL crossbred and NZWXNZW purebred rabbitsrespectively). The first factor in each case accounted for the greatestpercentage of the total variation, and was termed general size. The subsequentfactors (indices of body shape) presented patterns of variation independent ofgeneral size. The principal component based regression models, which arepreferable for selecting animals for optimal balance, accounted for 88% of thevariation in the body weight for both Hyla purebred and crossbred rabbitsrespectively.
Authors and Affiliations
O. M. Akinsola*| Department of Animal Science, Faculty of Agriculture, Ahmadu Bello University, Zaria, Nigeria., B. I. Nwagu| National Animal Production Reseach Institute, Shika, Kaduna State, Nigeria., M. Orunmuyi| Department of Animal Science, Faculty of Agriculture, Ahmadu Bello University, Zaria, Nigeria., G. T. Iyeghe-Erakpotobor| National Animal Production Reseach Institute, Shika, Kaduna State, Nigeria., E. D. Eze| Department of Human Physiology, Faculty of Medicine, Ahmadu Bello University, Zaria, Kaduna State, Nigeria., A. J. Shoyombo| Department of Animal Science, Faculty of Agriculture, Ahmadu Bello University, Zaria, Nigeria., E. U. Okuda| Department of Animal Science, Faculty of Agriculture, Ahmadu Bello University, Zaria, Nigeria., U. Louis| Department of Biology, School of Sciences, Federal College of Education, Katsina, Katsina State, Nigeria.
Keywords
Related Articles
- EP ID EP674
- DOI 10.14196/sjas.v3i1.1091
- Views 517
- Downloads 23
Fatty acid profile and lipid oxidation of lamb meat reared in arid area indoors and grazing outdoors in south west of Algeria
The aim of this study is to compare the fatty acid profile and flavor of lamb meats originating from grazing (A) and concentrate (C) diets. Twenty four lambs of Rumbi breed were used. One hundred and five days after rear...
Prediction of bodyweight from body measurements in rabbits using principal component analysis
The study aimed atdescribing objectively the interdependence among the biometric traits and topredict body weight from their orthogonal body shape characters using principalcomponent factor analysis. Body weight and te...
Reproductive performance of crossbred dairy cows in Mekelle, Ethiopia
The study was conducted on 252 Holstein-Friesian (HF) crossbred cows maintained under farmer’s management system in and around Mekelle (Ethiopia). A total of 72 small-scale dairy farm owners were randomly selected and...
Investigation on optimal initial live weight and sex effect for fattening in fat-tailed Lori-Bakhtiari sheep in intensiv
To identification of optimum initial live weight (ILW) and sex effect for fattening of Iranian Lori-Bakhtiari breed, a total of 224 growing lambs were allocated in two separate experiments. The first experiment (n = 14...
Use of ultrasonography for pregnancy diagnosis in red Sokoto goats
The present study was conducted to diagnose pregnancy 30 days following estrus synchronization and natural mating using transabdominal ultrasonography and to compare the traditional use of non return rates of estrus wi...