Effect of climatic variables on production and reproduction traits of colored broiler breeder poultry
| Autor: | G. D. Nayak, N. C. Behura, K. K. Sardar, P. K. Mishra |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Veterinary World, Vol 8, Iss 4, Pp 472-477 (2015) |
| Druh dokumentu: | article |
| ISSN: | 0972-8988 2231-0916 |
| DOI: | 10.14202/vetworld.2015.472-477 |
| Popis: | Aim: The present study was conducted to investigate the important climatic variables affecting production and reproduction in a broiler breeder flock. Materials and Methods: The experiment was conducted for a period of 1 year on colored synthetic female line male and female poultry birds. 630 female progeny and 194 male progenies from 69 sires and 552 dams produced in four consecutive hatches at an interval of 10 days were used for the present study. Each of the seven, body weight and reproduction traits were regressed with nine environmental variables. Initially, the data were subjected to hatch effect and sire effect corrections through best linear unbiased estimator (BLUE) method and, then, multiple linear regressions of environmental variables on each trait were applied. Result: The overall regression was significant (p |
| Databáze: | Directory of Open Access Journals |
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