In pig manufacturing, dietary crude protein (CP) is historically excessive as a consequence of using soybean meal as a main protein supply, which frequently results in extra amino acids and elevated nitrogen excretion, contributing to environmental air pollution. Excessive CP diets may also hurt intestine well being by protein fermentation and have gotten costlier as a consequence of local weather change and rising demand for soybean meal. Low-protein diets supplemented with crystalline amino acids provide an answer by exactly assembly amino acid necessities whereas lowering CP ranges. Nonetheless, the impression of low-protein diets on pig progress efficiency stays inconsistent and will fluctuate by progress stage. This research aimed to judge how lowering CP with all indispensable amino acid supplementation impacts the expansion efficiency of nursery, rising, and ending pigs.
Strategies: There have been a complete of 90 pigs (45 barrows and 45 gilts) on the rising stage, and 72 pigs (36 barrows and 36 gilts) on the ending stage. Pigs with common weights of 30.6 kg and 58.3 kg have been assigned to a few dietary remedies with six replicates. The dietary remedies consisted of three diets, every changing soybean meal with corn and crystalline amino acids, resulting in a 2% discount in CP ranges from the higher limits established for every progress stage. The higher CP limits have been set at 16% for each phases, that leaves the three remedies: 16% CP, 14% CP, and 12% CP.
Outcomes: Decreasing the focus of dietary CP had no impact on the expansion efficiency of rising pigs, no matter part. Nonetheless, within the ending stage, CP discount decreased the typical each day feed consumption between weeks 3 to six and over your complete 0-6 week interval. No results have been noticed on physique weight, common each day achieve, or gain-to-feed ratio.
Conclusion: Discount of the dietary crude protein, significantly all the way down to 12%, seems to be a possible possibility in the course of the rising and ending phases, with out opposed results on progress efficiency.
Cho I, Kong C. Progress efficiency of pigs fed low-protein diets supplemented with crystalline amino acids at completely different progress phases. Anim Biosci. 2025 Feb; 38(2): 316-324.
https://doi.org/10.5713/ab.24.0339
