Effect of Non-genetic Factors on Growth and Production Traits in Two Strains of Japanese Quails

Background: The growth of birds is a function both genetics and environment involving change leading into improvement in weight, shape, size, volume, etc. Study important non-genetic factors view formulating future selection breeding strategies different poultry species. Methods: present study was done on 1246 numbers Japanese Quails (Coturnix coturnix japonica) two strains i.e., black white distributed three generations during 2020-21. fixed effects gender, season hatch, strain various fortnightly body weights (FNBW), average daily weight gain (ADWG), relative rate (RGR) some production traits were studied. Result: Significant (p≤0.01) differences as well male female quails for hatch observed. maximum ADG 4th to 6th wk whereas the RGR highest first fortnight (hatch-2nd wk). Significantly higher egg (AEW) observed quails. Part (PEP) AEWs summer winter hatches, respectively. investigation elucidates significance performances further