CAUSAS DE BAIXA VIABILIDADE EM LEITÕES NA SUINOCULTURA

Abstract

Modern pig farming has achieved satisfactory productivity rates due to improvements in the areas of nutrition, health, facilities, equipment, management and also advances in genetic improvement. Genetics companies have maintained their commitment to producing hyperprolific sows to increase the number of animals produced each year, but achieving optimal litter birth weight uniformity is still a challenge in production systems. In this sense, this review was aimed at addressing the main causes of low viability in piglets in pig farming. One of the causes is not meeting the nutritional requirement of pregnant hyperprolific sows leading to the occurrence of intrauterine growth retarded. In addition, other aspects may affect piglet low viability being of sow parturition order, birth weight and birth order. Obtaining large and good quality litters at birth and weaning, implies meeting the sow nutritional requirements especially during pregnancy.The piglet low viability stems from failures with sows during the gestational period, in other words, the good piglet production should be accompanied by the proper nutrition of sows throughout the reproductive cycle.