Standardized Ileal Digestible Lysine Requirement of 6- to 10-kg Weanling Pigs | Science Publications

American Journal of Animal and Veterinary Sciences

Beob Gyun Kim¹  Chan Sol Park¹ 

关键词: Amino Acid;    Broken-Line Analysis;    Growth Performance;    Swine;   

DOI  :  10.3844/ajavsp.2015.150.155

学科分类：兽医学

来源: Science Publications

【 摘 要 】

The objective of the experiment was to determine the StandardizedIleal Digestible (SID) lysine requirement for weanling pigs from 6 to 10 kg of BodyWeight (BW). A total of 216 weanling pigs with an initial BW of 6.23±0.93 kgwere assigned to six diets in a randomized complete block design with fiveblocks based on BW. Six corn-dried whey-soybean meal-based diets wereformulated to contain 6 concentrations of SID lysine from 1.17 to 1.62% with anincrement of 0.09% at the expense of corn. Pigs were fed experimental dietsduring 14 days of trial and BW of pigs and feed intake were recorded on day 7and 14. During the first 7 days, average daily gain, Average Daily Feed Intake (ADFI)and Gain:Feed (G:F) of pigs were not affected by the dietary SID lysineconcentration. However, the ADFI of pigs linearly decreased (p=0.002) as theSID lysine concentration increased during the following 7 days. During theoverall period, the addition of dietary SID lysine linearly decreased (p=0.007) ADFIwhereas linearly increased (p=0.011) G:F. The SID lysine requirement wasdetermined by four different statistical analyses including linear broken-linemodel, quadratic broken-line model, 95% of the upper asymptotic value ofquadratic model and the former intercept between plateau of the linearbroken-line model and quadratic model. Mean value for the SID lysinerequirement was 1.43% (4.07 g/Mcal metabolizable energy), ranged from 1.39 to1.49% (from 3.95 to 4.24 g/Mcal metabolizable energy) based on G:F of pigs from6 to 10 kg of BW.

【 授权许可】

Unknown