How much lysine in liquid diets for neonatal piglets?
US scientists have conducted trials to establish the lysine requirements of neonatal pigs fed a liquid diet up to 5.5 kg bodyweight.
The researchers found 1.12 g lysine/MJ gross energy to be required, estimating the requirement at the lower limit of the 95% confidence interval for crude protein accretion of 42.9 g/day.
The scientists, attached to North Carolina State University, arrived at this amount by randomly allotting neonatal pigs, 1-2 days old (about 1.63 kg), to ten isocaloric diets varying in lysine concentration from 0.76 to 1.62 g lysine/MJ gross energy (GE).
Diets were formulated using whey protein concentrate and casein as protein sources and contained similar balance of indispensable amino acids.
This research was published in Animal Production Science.
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