The study was conducted in female Black Bengal goat to investigate the effect of non hormonal factors on reproductive efficiency. Female kids of three months of age were placed in three groups with five numbers in each group; 1st TG with supplementary nutrition and a buck, 2nd TG with supplementary nutrition and 3rd TG as control. Due to permanent exposure of buck and good plane of nutrition, the animals under TG 1 attained puberty significantly () variation in gestational length indicated non-hormonal factors had no effect on length of gestation. | Non hormonal factors influencing reproductive efficiency in black bengal goat