Reconsideration on the optimum moment of selecting for reproduction in boars from the Marele alb breed and 345 Periş synthetic line

Abstract

At the first fertile services, the dynamics of boars weight increase was tributary to body weight, which must be over 100 kg. Different weights resulted in differences of the values of body indices in female mates. Prolificacy, weight of pigs group at birth, weight of pigs group at 21 days and weight of pigs group at weaning represented the parameters influenced by differences in boar weight. Suckling capacity, weight of pigs at weaning and number of pigs at weaning were the reproductive parameters influenced by age differences in boars. The optimum age for reproduction in boars must be of 224-252 days. The requirements concerning age and body weight must be satisfied at first fertile periods.