Arginine improves nutritional quality of sow milk and piglet performance

作者：Rufino Moreira Rennan Herculano; Lanferdini Eloiza; Fonseca Leonardo da Silva; Chaves Rhuan Filipe; Pospissil Garbosse Cesar Augusto; Saraiva Alysson; Nogueira Eduardo Terra; Teixeira de Abreuv Marvio Lobao

来源：Brazilian Journal of Animal Science, 2018, 47(0): UNSP e20170283.

DOI：10.1590/rbz4720170283

• amino acid
• lactation
• milk composition
• reproduction
• swine

The objective of this study was to evaluate the effect of L-arginine supplementation in lactation diets on the productive and reproductive performance of pluriparous sows and their litters. Seventy-six sows of the same genetic line were assigned to four treatments in a completely randomized design with 19 replicates. The experimental unit was the sow and its respective litter. Treatments comprised a control diet (no L-arginine supplementation) and other three diets obtained by top dressing the control diet with 35, 70, and 105 g of L-arginine. L-arginine supplementation had no effect on any performance variables, body condition, milk production, or weaning-estrus interval. There was a quadratic effect on percentage of protein and fat in milk as well as on the daily production of these components. Protein and fat percentage declined during lactation. Adding L-arginine to the diet had a quadratic effect on piglet weight at 13 and 21 days, the optimal level of L-arginine supplementation being estimated as 44.8 and 49.7 g, respectively. L-arginine supplementation had a quadratic effect on the weight gain of piglets during the first 13 days and on total period of lactation, the optimal level of L-arginine supplementation being estimated as 42 and 49 g, respectively. Supplementing lactation diets with 49 g of L-arginine, corresponding to 45 g day(-1), improves the weight gain of piglets by improving the nutritional quality of sow milk.

• 出版日期2018