ArticleFrontiers in veterinary science2026
Dietary arginine-to-lysine ratio influences nutrient digestibility during early growth without affecting growth performance in growing-finishing pigs.
Article in Frontiers in veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The balance of dietary amino acid ratios is an important factor affecting nutrient utilization in pigs. Both arginine and lysine are involved in protein deposition and nitrogen metabolism, and their relative ratio may influence nutrient utilization and metabolic responses. This study evaluated the effects of different dietary arginine-to-lysine ratios (Arg:Lys) on growth performance, fecal characteristics, nutrient digestibility, and serum metabolites in growing-finishing pigs. A total of 165 pigs [Duroc × (Landrace × Yorkshire)] with an initial body weight (BW) of 26.36 ± 3.01 kg were assigned to three dietary treatments in a randomized complete block design based on BW. The CON, TRT1, and TRT2 diets were formulated to provide Arg:Lys ratios of 1.00, 1.10, and 1.20, respectively. Each treatment had 11 replicate pens, with 5 pigs per pen, including 2 gilts and 3 barrows. The experiment lasted 15 weeks. Dietary Arg:Lys ratio did not affect BW, average daily gain, average daily feed intake, or feed conversion ratio during any experimental period (
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