Effect of Supplementary Vit- D3 On Hatchability of Sonali breeder

Abstract

A Study was carried out to evaluate the effects of supplementary vit-D3 on sonali breeder chickens in Pahartali thana, Chittagong district. Data were collected from one sonali breeder flock with a total 1500 chickens. There I found, before supplementation of vit-D3 the hatchability and mortality rate was 74.8% and 25.2% respectively (Figure:2 and 3). After providing supplementary vit-D3 the hatchability rate increased and the mortality rate reduced to 75.7% and 24.3% respectively (Figure:2 and 3). As hatchability depends on various other factors including fertility, genetic, disease, egg selection and management practices. So, by maintaining proper balanced nutrients, control of maternal diseases along with supplementation of vit -D3 the hatchability of Sonali breeder chickens can be improved. This study summarized that vit-D3 had a protective effect on the developing embryo from 0 to 7 days of incubation and had positive influence over the hatchability with no consistent long- lasting effects on layer performance were observed.