Impact of Calf Sex and Maternal Lactation Performance on Growth and Behaviour in Gir Calves

This study investigates the influence of calf sex and dam milk yield on the growth performance and behavioural traits of Gir calves. Fourteen Gir calves (7 males and 7 females) were selected post-parturition, and their weight gain, dry matter intake (DMI), and play behaviour were monitored over 90 days. Data showed that male calves had significantly higher weight gain in the first month and exhibited greater play behaviour compared to females. Dams of male calves also yielded significantly more milk during the early lactation period. These findings suggest sex-specific growth patterns and a potential relationship between calf sex and dam lactation performance, highlighting the need for gender-based management strategies in calf rearing.