Diferentes métodos avaliativos de escore corporal da porca e seus efeitos sobre desempenho reprodutivo e impacto econômico na granja

Abstract

The objective of this work was to evaluate different methods of ECC evaluation during gestation of the female pig and its effects on the reproductive performance and consequent economic impact resulting from the adoption of these different strategies. In the present study, the sows were divided in two treatments, being treatment 1 (Caliper) and treatment 2 (visual) containing in each treatment females of 2 to 6 deliveries. One group had its ECC assessed by visual method (treatment 2) and the other by the Caliper instrument method (Treatment 1). The ECC measures were performed at the maternity leave, where the groups were divided, at the coverage, at 15, 30, 45, 60, 75, 90 and 105 days of gestation, on the day of delivery and on the day of weaning. piglets. Piglets were weighed at birth and at weaning, and live piglets, stillborn and mummified piglets were evaluated and counted. At the end, an economic analysis was carried out, taking into account the different methods of evaluation of adopted CCPs. After statistical analysis, it was noted that there were no differences between the ECC evaluated between the two treatments, throughout the ECC measurement period, due to the fact that there was no change in consumption over the experimental period, it was expected that the effects reproductive variables measured in the litters were not discrepant between treatments. As there were no differences between the number of live, stillborn and mummified piglets, the weights of the piglets were also measured and categorized, divided into five categories, and treatment 2 obtained a greater average of piglets between 1201 and 1600 g. the lowest number of piglets below 800 g. in relation to the viability of consumption and feed price there was no statistical difference between treatments. With all the information collected the methods of evaluation of body score tested (visual evaluation versus Caliper) did not influence the size of litter, however the females evaluated by the visual method showed a tendency in the smaller number of piglets weighing less than 800g. Regarding economic viability, both ECC assessment methods can be routinely used in commercial farms, without damaging the producer.