AFB1降解剂对肉鸡生长性能、养分代谢及AFB1在体内残留的影响

doi:10.16431/j.cnki.1671-7236.2017.02.019

摘要/Abstract

摘要：

通过在含有黄曲霉毒素B₁（aflatoxin B₁，AFB₁）的肉鸡日粮中添加AFB₁降解剂，测定其对肉鸡生长性能、养分代谢及AFB₁在血液、肝脏及肌肉中残留的影响。试验选择42日龄健康AA肉鸡75只随机分为5组，每组设5个重复。A组为对照组，饲喂基础日粮，B、C、D和E组在基础日粮中分别添加400、200、400和800 μg/kg AFB₁。B组为负对照组，C、D和E组分别添加0.15% AFB₁降解剂，试验期为30 d。试验结束时，测定肉鸡的生长性能、营养物质代谢率、体内AFB₁含量及抗氧化酶活性。结果表明：与AFB₁含量相同的B组相比，D组的平均日采食量和末重分别提高了32.45%、42.46%（P < 0.05）；与B组相比，其余各组的有机物、粗蛋白质、钙和磷的代谢率均有显著提高（P < 0.05），D组的有机物和粗蛋白质消化率分别提高了9.50%和178.75%（P < 0.05）。血液、组织中AFB₁的测定结果表明，停喂AFB₁前，C组肝脏中AFB₁含量显著低于B组（P < 0.05），停喂AFB₁24 h后，A和C组胸肌中AFB₁含量显著低于B、D和E组（P < 0.05），停喂AFB₁48 h后，C、D组胸肌中AFB₁含量恢复到与对照组相同的水平。与B组相比，添加0.15% AFB₁降解剂的C、D和E组，血清和肝脏中谷胱甘肽过氧化物酶和超氧化物歧化酶活力显著提高（P < 0.05）。由此可见，在含有AFB₁的日粮中添加AFB₁降解剂，可缓解AFB₁对生长的抑制，提高养分消化率，加速AFB₁在肉鸡体内的代谢，减少AFB₁对机体的损伤。

关键词: AFB₁降解剂; 肉鸡; 生长性能; 代谢率

Abstract:

Effects of aflatoxin B₁(AFB₁)-degrading agent on growth performance, nutrients metabolism and AFB₁residues in blood,liver and muscles were studied by adding it in broiler diets infected AFB₁. Seventy five 42-day-old Arbor Acres (AA) broilers were randomly allocated to 5 groups with 5 replicates per group. Broilers in group A (control group) were fed with basic diet, the diets of group B (negative control group),C, D and E were supplemented with 400, 200, 400 and 800 μg/kg AFB₁, and broilers in group C, D and E were fed with the diets containing 0.15% AFB₁-degrading agent, respectively. The experiment lasted for 30 d. Growth performance, nutrient metabolic rate,AFB₁contents and antioxidant indices were measured at the and of experiment.The results indicated that,compared with group B, the final weight and average daily feed intake of group D were increased by 32.45% and 42.46% (P < 0.05), and the metabolic rates of organic matter, crude protein, calcium and phosphorus in other groups were significantly increased (P < 0.05),the metabolic rates of organic matter and crude protein in group D increased by 9.50% and 178.75%(P < 0.05). Liver AFB₁ content in group C was significant lower than that in group B (P < 0.05).The breast muscle AFB₁ contents in group A and C were significant lower than that in other groups (P < 0.05) at 24 h after AFB₁ administration termination. The breast muscle AFB₁ contents in group C and D were similar to the control group at 48 h after AFB₁ administration termination. Compared with group B, SOD, GSH-Px activities of serum and liver in group C, D and E were significantly increased (P < 0.05). It was concluded that adding AFB₁-degrading agent in diets could increase broiler growth and nutrient availability, accelerate AFB₁ metabolism, and reduce the harmful effect of AFB₁ on broilers.

Key words: AFB₁-degrading agent; broiler; growth performance; nutrients metabolic rate

中图分类号:

S816.7

左瑞雨, 王秋文, 常娟, 尹清强, 王二柱, 朱群. AFB₁降解剂对肉鸡生长性能、养分代谢及AFB₁在体内残留的影响[J]. 《中国畜牧兽医》, 2017, 44(2): 432-439.

ZUO Rui-yu, WANG Qiu-wen, CHANG Juan, YIN Qing-qiang, WANG Er-zhu, ZHU Qun. Effect of AFB₁-degrading Agent on Growth Performance,Nutrients Metabolism and AFB₁ Residues in Broiler[J]. , 2017, 44(2): 432-439.

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AFB₁降解剂对肉鸡生长性能、养分代谢及AFB₁在体内残留的影响

Effect of AFB₁-degrading Agent on Growth Performance,Nutrients Metabolism and AFB₁ Residues in Broiler

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