Uso da betaína em rações para fêmeas suínas de primeiro e segundo ciclo reprodutivo

• Ano de defesa: 2014
• Autor(a) principal: Andrade, Tiago Silva
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Suíno - Criação; Suíno - Alimentação e rações; Lactação
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/20614

This study aimed to evaluate the betaine supplementation in the diet in the final third of gestation and lactation on the reproductive performance and milk composition of sows of first and second order of birth. 72 sows were used, 36 of the first cycle (171.77 ± 7.54 kg) and 36 second cycle (203.17 ± 13.31 kg) distributed in a complete randomized block design in a factorial 2 x 3 ,two reproductive cycles and three rations (R0: control diet; R1: ration containing betaine in replacing methionine 50 %, R2: control diet supplemented with betaine). The weight at birth and weaning weight differed significantly depending on the order of delivery, but not due to the diet. The backfat thickness at calving, backfat thickness at weaning and feed intake did not differ significantly. As for the weaning-to-estrus was no difference in function of the feed, which was greater for R1. No significant differences were observed for total variable births, live births, stillbirths, mummified, mortality at weaning and weaned. The average birth weight of piglets differed significantly depending on the order of delivery, but not due to the diet. Females in the labor weaned piglets with higher weaning weight compared to first parity females. The total protein and triglycerides of milk at different stages of lactation did not differ significantly from the control group and the groups supplemented with betaine. The diets did not significantly influence the mean values of the milk of sows first and second breeding cycle fatty acid profile. The diets did not affect any of the economic variables evaluated. Betaine supplementation in the diet in the final third of gestation and lactation did not affect the reproductive performance of sows, and the performance parameters of piglets. There was also no influence on the composition of milk at different stages of lactation. The substitution of methionine by betaine impaired reproductive performance of sows, since there was an increase in the weaning-to-estrus.