Benzoic acid is thought for its antimicrobial exercise within the intestine. Benzoic acid could help higher nitrogen utilization, cut back diarrhea, and enhance each development efficiency and carcass high quality. After ingestion, benzoic acid is transported to the liver, the place it binds with glycine to type hippuric acid, which helps decrease urinary pH and cut back ammonia emissions.
Goal: This examine aimed to discover how rising ranges of benzoic acid have an effect on nitrogen metabolism, development, environmental impression, and carcass traits in pigs from weaning to market and to establish the optimum benzoic acid inclusion stage for maximizing these advantages.
Strategies: A complete of 480 pigs (common weight 6.0 ± 1.5 kg) had been assigned to 4 dietary remedies in a randomized full block design, with preliminary physique weight and pen group as blocking elements. The pigs had been fed over six development phases. Remedies included a management eating regimen with antibiotics (constructive management) and three ranges of benzoic acid supplementation: 0.00%, 0.50%, and 1.00% in antibiotic-free diets.
Outcomes: The eating regimen with antibiotics led to raised common day by day achieve and feed effectivity in comparison with pigs not receiving benzoic acid. Nonetheless, rising ranges of benzoic acid within the eating regimen additionally improved development efficiency in a dose-dependent manner, with optimum common day by day achieve noticed round 0.53% benzoic acid (7.5 g/day), and finest feed effectivity round 0.57% benzoic acid (8.1 g/day). Larger benzoic acid ranges barely improved nitrogen digestibility and clearly elevated nitrogen retention. Supplementation with 1.00% benzoic acid lowered urine pH and diminished each ammonia emissions and the speed of ammonia launch from manure over a 24-hour interval. Pigs fed the antibiotic eating regimen had higher carcass weights and backfat on the first rib than these on benzoic acid diets. In the meantime, rising benzoic acid ranges diminished loin shade and marbling however elevated loin eye space, with the perfect outcomes seen round 0.59% benzoic acid (8.1 g/day).
Conclusion: Dietary benzoic acid improved development efficiency, nitrogen utilization, environmental outcomes, and sure carcass traits in pigs. Supplementation between 0.53% and 0.59% benzoic acid (equal to 7.5-8.1 g/day) offered probably the most constant advantages when fed from weaning to market.
Kim SW, Choi H, Lin C, Mateo RD. Results of accelerating ranges of benzoic acid fed to pigs on nitrogen utilization and metabolism affecting development efficiency, ammonia emissions, and carcass traits. J Anim Sci. 2025; skaf101. doi: 10.1093/jas/skaf101.
