Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey.
Danisco Animal Nutrition, Istanbul, Turkey.
Trop Anim Health Prod. 2022 Jun 8;54(4):201. doi: 10.1007/s11250-022-03196-6.
The present study aimed to examine the influence of sepiolite on growth performance, meat quality, intestinal health, some blood parameters, and digestibility of nutrients in broilers fed low-protein diets with the constant energy-protein ratio. A total of 252, daily male broiler chicks were allocated to four treatment groups further divided into 9 replicates each containing 7 chicks. Low-protein diets having a constant energy-protein ratio were formulated by lowering protein and energy levels of the control group diet by 5%. Sepiolite was used at the level of 1% in the diets. After 42 days of trial, total feed consumption, total body weight gain, total feed conversion ratio, and carcass yield were not influenced by reducing protein, sepiolite supplementation, and interaction between low-protein-low-energy diet and sepiolite. Reducing protein in the diets led to reducing the digestibility of nutrients, increasing ileal viscosity, decreasing villus height, villus surface area in duodenum and jejunum, and increasing abdominal fat and ether extract, cooking losses, total oxidant status, and oxidative status index in breast meat. Sepiolite supplementation to low-protein diets increased crude protein digestibility, reduced viscosity, increased villus height/crypt depth values and reduced cooking losses, and increased water holding capacity in breast meat. Blood serum biochemical parameters and minerals were not affected by sepiolite supplementation to low-protein diets. Therefore, it is concluded that sepiolite can be added as a beneficial supplement in broiler diets as well as in low-protein diets with a constant energy-protein ratio.
本研究旨在探讨在恒定能量-蛋白比的低蛋白日粮中添加海泡石对肉鸡生长性能、肉品质、肠道健康、一些血液参数和养分消化率的影响。将 252 只雄性肉鸡雏鸡随机分为 4 个处理组，每个处理组进一步分为 9 个重复，每个重复 7 只鸡。通过降低对照组日粮的蛋白和能量水平 5%，配制出具有恒定能量-蛋白比的低蛋白日粮。日粮中添加 1%的海泡石。试验进行 42 天后，降低蛋白、添加海泡石以及低蛋白-低能量日粮与海泡石的互作均不影响总采食量、总增重、总饲料转化率和胴体产率。日粮中降低蛋白导致养分消化率降低，回肠黏度增加，十二指肠和空肠绒毛高度、绒毛表面积降低，腹部脂肪和醚提取物、蒸煮损失、总氧化剂状态和氧化状态指数增加，胸肉增加。在低蛋白日粮中添加海泡石可提高粗蛋白消化率，降低黏度，增加绒毛高度/隐窝深度值，降低蒸煮损失，并提高胸肉的持水力。海泡石添加到低蛋白日粮中不会影响血清生化参数和矿物质。因此，结论是海泡石可作为一种有益的补充物添加到肉鸡日粮中，也可添加到具有恒定能量-蛋白比的低蛋白日粮中。
