Exigência de Energia Metabolizável para Fêmeas Suínas Primíparas em Lactação

• Autor(a) principal: Furtado, Jessica Mansur Siqueira
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5801
• topic: Desempenho; Produção de leite; Leitegada; Primipara; Performance; Milk production; Litter; Primiparous; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA

Forty first litter hybrid commercial sows, with initial weight of 187,7 ± 15,08, were used to evaluate the daily metabolizable energy (ME) in the diet, during lactation (28 days). The animals were distributed in a completely randomized block design, in agreement with body weight in four treatments (15.790; 16.786; 17.782 e 18.778 kcal of ME/day) with 10 repetitions, being each animal considered the experimental unit. The minimum feed intake was fixed at 5.0 kg /day and treatments were obtained by supplying oil 120, 240 and 360 g per day, respectively. The metabolizable energy and lysine intake varied according to the treatments. There was no effect of dietary energy on the mobilization of body reserves, backfat thickness and muscle depth of sows during lactation. There was no effect of energy intake on weight gain of piglets and on milk production. Milk fat increased linearly, according to the Energy intake. It is concluded that primiparous lactating sows with 10 piglets per litter has a daily requirement of 15,276 kcal of metabolizable energy.