Department of Animal Nutrition and Feed Management, University of Life Sciences in Poznan, Poznan, Poland.
J Anim Physiol Anim Nutr (Berl). 2010 Feb 1;94(1):29-34. doi: 10.1111/j.1439-0396.2008.00875.x. Epub 2009 Nov 12.
To determine the efficiency of benzoic acid, a feeding experiment was carried out with 240 one-day old ROSS 308 cockerels. Birds were divided into three dietary treatments: I (C) - no additives, II (B1) - 0.1% inclusion of benzoic acid, III (B2) - the inclusion of 0.2% benzoic acid. The performance results were similar in birds fed the control diet and the diet with 0.1% of benzoic acid. The dietary inclusion of benzoic acid at 0.2% depressed the growth of broiler chickens (p < 0.05). The dry matter of the digesta increased in the crop and caeca after benzoic acid supplementation. The pH of the caecal contents decreased following benzoic acid supplementation and was the lowest in the B2 group. No differences were found in the pH of the crop, ileal, gizzard digesta and rectum content. Lactic acid bacteria populations were the lowest in the caeca of the B1 group (p < 0.05). Coliform bacteria decreased in the caeca contents following increased benzoic acid supplementation.
为了确定苯甲酸的效率，用 240 只 1 日龄的 ROSS 308 公鸡进行了饲养试验。鸡被分为三种饮食处理：I（C）-无添加剂，II（B1）-0.1%苯甲酸添加，III（B2）-0.2%苯甲酸添加。在喂食对照饮食和 0.1%苯甲酸饮食的鸡中，性能结果相似。在 0.2%的苯甲酸饮食中添加苯甲酸会抑制肉鸡的生长（p < 0.05）。在补充苯甲酸后，盲肠和回肠内容物中的干物质增加。在补充苯甲酸后，盲肠内容物的 pH 值下降，B2 组的 pH 值最低。在盲肠、回肠、肌胃和直肠内容物中，均未发现作物 pH 值的差异。在 B1 组中，盲肠中的乳酸菌数量最低（p < 0.05）。随着苯甲酸添加量的增加，盲肠内容物中的大肠菌群减少。
