Evaluación de tres lactoreemplazantes en etapa predestete y su efecto sobre la productividad de la descendencia y condición corporal de las madres

Abstract

This study was developed in El Oro Piñas in the pig farm “Reina del Cisne”. The objective was to compare the effect of three commercial milk replacers on productivity and mortality of piglets in the pre-weaning stage and their effect on the body condition of the dams. The sample of this study was 40 sows which were randomly divided into four treatments: T1) Control: without milk replacer, T2) milk replacer A: 130 g / L of water, T3) milk replacer B: 250 g / L water, T4) milk replacer C: 150 g / L of water. The following were evaluated: weight, body condition (BC), and mm of back fat of the mothers at the time of transfer to; maternity, labor, weekly, and weaning. In addition, food consumption, days of return to estrus, and pregnancy rate. In the piglets, the following were evaluated: live births, total births, weaned, mortality, stool score, weight, biomass at birth, and at weaning. Furthermore, it was evaluated the money invested per piglet for milk replacer. Duncan's test (p>0.05) was used for the means between the treatments and chi-square for percentages. The variables evaluated in the sows did not show differences (p> 0.05); In the piglets, there were no significant differences (p> 0.05), except for a statistical trend in favor of the control treatment. However, it should be considered that it is a positive farm for porcine reproductive and respiratory syndrome virus (PRRS). Regarding the economic impact per piglet, treatment four was the one with the lowest cost. In conclusion, the use of milk replacer did not show significant effects on the productive parameters of the sow, but in the piglets, there was a statistical trend towards better biomass at the weaning of the piglets.