Arginine improves nutritional quality of sow milk and piglet performance
AUTOR(ES)
Moreira, Rennan Herculano Rufino, Lanferdini, Eloiza, Fonseca, Leonardo da Silva, Chaves, Rhuan Filipe, Garbossa, Cesar Augusto Pospissil, Saraiva, Alysson, Nogueira, Eduardo Terra, Abreu, Márvio Lobão Teixeira de
FONTE
R. Bras. Zootec.
DATA DE PUBLICAÇÃO
22/10/2018
RESUMO
ABSTRACT 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 0.5, 1.0, and 1.5% 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 0.64% and 0.71%, 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 0.60% and 0.70%, respectively. Supplementing lactation diets with 0.70% of L-arginine, corresponding to 45 g day−1, improves the weight gain of piglets by improving the nutritional quality of sow milk.
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