Influence of the replacement gilt live weight and age on their reproductive qualities in the process of first insemination

Replacement gilt age and live weight influence on their reproductive qualities in the process of first insemination is researched. It is determined that the optimal age for gilt first insemination is 240 days, live weight is 130-145 kg. Gilt live weight increase by 10 kg in the moment of first insemination leads to the live-born piglet number increase by 0,86 heads in first farrow. Gilt breeding age increase by 11 days leads to the live-born piglet number increase by 0, 4 heads in first farrow.