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Phenotypic Correlations among Body Weights at Various Ages in White Cornish, Red Cornish and White Plymouth Rock Pure Breeds

Mandavi Vallabh Jha, P. Guru Vishnu, Sanjeev Ranjan, Vijay Kumar, Narasimha Reddy.


Abstract

Phenotypic correlations among body weights at various ages were studied using genetic stock of poultry involving White Cornish, Red Cornish and White Plymouth Rock breeds of poultry maintained at Central Poultry Farm, Patna on random mating for a large number of generations. A total of 266 birds (131 males and 135 females) were utilized to compute correlation coefficients among body weights at various ages. All the phenotypic correlations among body weights from 4th week to 8th week of age, both in males and females, of WC, RC and WPR purebreds were observed to be positive, highly significant (P

Key words: Phenotypic correlation, White Cornish, Red Cornish, White Plymouth Rock, body weight






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