The effect of the apparent ileal digestible lysine-to-energy ratio on growth rate and protein deposition in the body of growing pigs fed a wheat-rapeseed diet
2003
Raj, S. | Skiba, G. | Weremko, D. | Fandrejewski, H. (Polish Academy of Sciences, Jablonna (Poland). Kielanowski Institute of Animal Physiology and Nutrition)
The results of the study indicate that wheat-rapeseed diets supplemented only with crystalline lysine can be successfully fed to fast-growing pigs to improve their performance as well as daily gain composition. The lysine to metabolizable energy ratio estimated in the study proved that its optimal value depends on the animal response criterion used. If the response criterion is protein deposition in the pig body, the ratio should be higher than for average daily gain. The data indicate that pigs growing from 25 to 70 kg body weight and fed a wheat-rapeseed meal diet containing 12.8 MJ ME/kg will be able fully maximize their growth rate or protein deposition at an apparent ileal digestible lysine to matabolizable energy ratio amounting to at least 0.55 and 0.60, respectively
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