Programas alimentares de porcas gestantes e lactantes utilizando o modelo InraPorc®

Abstract

A study was conducted to evaluate in Brazilian conditions the nutritional and feeding strategies of InraPorc® model for gestating and lactating sows. To meet the requirements of the model, the work was done in four steps: establishment of animal profile, determination of nutritional requirements, and definition of feed and nutrition program and application of the model InraPorc in commercial farm. Eighty DanBred sows were used, selected in order of birth, weight and backfat thickness. The experimental design was a randomized block and treatments were assigned to diets and feeding program used by the Farm program and adjusted by InraPorc. The treatments consisted of 40 replications were divided into three groups: OP1 - 15; OP2 - 13 and OP> 3-12 sows. During pregnancy, between 26 and 85 days, feed intake was 5% higher in primiparous sows, 14% in OP2 sows and 13.5% in OP> 3 sows fed by the InraPorc nutritional program. Between 86 to 108 days, the nutritional adjustments was 8.3% higher in feed intake in primiparous sows, 6.2% in OP2 sows and 9.3% in OP> 3 sows. During the lactation, the nutritional adjustment increased the maternal gain an average of 5% in both groups. The uterine contents and litter weight at birth was higher (P<0.05) in OP2 sows fed by the InraPorc® nutritional program to relation sows fed with Farm program. The total number of piglets born and born alive was higher in OP2 sows fed with the feeding program by InraPorc. The average weight of piglets at birth was higher in groups fed with the feeding program by InraPorc (1.313 vs. 1.273 kg). Piglet weight at weaning was 14 and 9% higher in piglets of primiparous and OP2 sows fed with feeding program by InraPorc. The sows weaning weight was 6.4% higher in primiparous sows fed diets adjusted by InraPorc. In this study, the weight loss observed in the groups ranged from 2 to 4.9%, and we found the largest mobilization in OP ≥ 3 sows fed diets adjusted by InraPorc. The InraPorc identified nutritional deficiencies in primiparous sows during late gestation and proposed a nutritional adjustment to the category. The adjustment in primiparous nutrition in gestation increases the maternal gain and in lactation reduces the maternal catabolism of body reserves. In addition, nutritional support during pregnancy increases the piglet weight at birth and during lactation, weaning weights.