Effects of dietary valine:lysine ratios on lactation performance of primiparous sows nursing large litters

Revista Brasileira de Zootecnia

Park, Jae Won¹  Kim, In Ho¹  Devi, Subramaniam Mohana¹ 

[1] Dankook University, Cheonan, South Korea

关键词:  amino acid;    body weight;    feed intake;    pigsIntroductionThe amino acid (AA) requirement is an important issue in swine nutrition;   

DOI  :  10.1590/S1806-92902015001200002

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

Eighteen sows were used to determine the effect of dietary valine:lysine (val:lys) ratios on lactation performance in primiparous sows and litter performance. Sows, raised in individual pens, were randomly assigned to 1 of 2 experimental diets containing different standardized ileal digestibility (SID) val:lys ratios of 0.80 or 0.85. Corn-soybean-wheat-based diets were formulated to achieve the dietary treatments (0.86% or 0.87% SID lysine, and 0.69% or 0.74% SID valine). All diets were formulated to have 3,450 kcal metabolizable energy/kg. The experiment lasted 24 d. At the end of the experiment, body weight loss, backfat loss, average daily feed intake, and days to return to estrus were not affected by the different dietary val:lys ratios. Furthermore, no difference was observed in number of piglets weaned, piglet survival rate, weaning litter weight, litter weight gain, piglet weaning body weight, piglet gain, or piglet daily gain between the two dietary treatments. However, increasing the dietary val:lys ratio increased arginine and threonine concentrations in the milk. Dietary val:lys ratios of 0.80 and 0.85 do not affect the lactation performance of primiparous sows nursing large litters, but increase the arginine and threonine concentrations in milk as the dietary val:lys ratio are increased.

【 授权许可】

Unknown