Requirements of metabolizable energy and standardized ileal digestible amino acids daily intake for active boar
The aim of the experiment was to demonstrate the optimal of metabolizable energy (ME) and daily standardized ileal digestible (SID) amino acid intake for active boar in Vietnam conditions. A total of 27 active boars (Duroc and Duroc x Pietrain) were used in two-factorial design. The first factor is ME (three levels: 3,000; 3,100; 3,200 kcal/kg) and the second is SID Lys (three levels: 0.7; 0.8; 0.95%) for 9 treatments in 3 replications with one active boar per replicate for each treatment. The crude protein was formulated at 13.5% and the ratios of SID methionine+cystine, SID threonine, SID tryptophan to SID lysine were 70; 70; 20%, respectively for all treatments. The result indicated that the sperm quality of boar was the best at 9,134 kcal ME/kg and 23.58 g SID Lys daily intake.
