摘要
本试验旨在研究苜草素对产蛋后期蛋鸡脂肪肝出血综合征（FLHS）的预防作用。选用500日龄京红1号产蛋鸡1 008只,随机等分为7组,每组6个重复,每个重复24只鸡。Ⅰ组为对照组,饲喂常规饲粮（代谢能11.10 MJ/kg,粗蛋白质17.68%）;Ⅱ-Ⅶ组为试验组,饲喂高能低蛋白质饲粮（代谢能12.87 MJ/kg,粗蛋白质13.84%）,并分别在饲粮中添加0、200、400、600、800、1 000 mg/kg苜草素。试验期60 d。结果表明：1）与对照组相比,高能低蛋白质饲粮组（Ⅱ组）蛋鸡第30天时即可表现出明显的FLHS病理特征,第1-30天平均日采食量、产蛋率、蛋重、产蛋量显著降低（P〈0.05）,料蛋比显著升高（P〈0.05）,第1-60天趋势更加显著（P〈0.05）;第42天蛋白高度和哈氏单位显著降低（P〈0.05）。2）在高能低蛋白质饲粮中添加不同梯度的苜草素均能降低FLHS发生率,提高第1-60天的平均日采食量、产蛋率、产蛋量,降低料蛋比;提高第42天的蛋白高度、哈氏单位。由此可见,高能低蛋白质饲粮能够诱导蛋鸡FLHS,补充苜草素具有预防作用。
This experiment was conducted to investigate the prophylactic effects of polysavone（alfalfa extract） on fatty liver hemorrhagic syndrome（FLHS） of laying hens in late-phase.A total of 1 008 Jinghong No.1 laying hens aged 500 days were randomly divided into 7 groups,with 6 replicates per group and 24 hens per replicate.Hens in group Ⅰ（control group） were fed a common diet（metabolic energy 11.10 MJ/kg; crude protein 17.68 %）,while hens in groups Ⅱ,Ⅲ,Ⅳ,Ⅴ,Ⅵ and Ⅶ（experimental groups） were fed high-energy and lowprotein diets（metabolic energy 12.87 MJ/kg; crude protein 13.84 %） supplemented with 0,200,400,600,800,1 000 mg/kg ploysavone,respectively.The experiment lasted for 60 days.The results were as follows： 1）compared with the control group,feeding a high-energy and low-protein diet without polysavone for 30 days induced FLHS,at the 1 to 30 days,the average daily feed intake（ADFI）,laying rate,egg weight and egg mass were significantly decreased（P〈0.05）,and the ratio of feed to egg was significantly increased（P〈0.05）,and at the 1 to 60 days,the trend was more obvious（P〈0.05）; at the 42 days,the albumen height and Haugh unit were significantly decreased（P〈0.05）.2） Adding different gradients of ploysavone in high-energy lowprotein diet could decrease the incidence rate of FLHS; increase the ADFI,laying rate,egg mass at the 1 to 60 days,decrease the ratio of feed to egg; increase albumen height and haugh unit at the 42 days.In conclusion,high-energy low-protein diet can induce FLHS in laying hens,while supplement of ploysavone can prevent the induction of FLHS.
出处
《动物营养学报》
CAS
CSCD
北大核心
2016年第10期3153-3160,共8页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
"十二五"国家科技支撑计划课题(2013BAD10B04)
国家蛋鸡产业技术体系建设专项经费(CARS-41-K16)
中国农业科学院科技创新工程(ASTIP-IAS08)
关键词
苜草素
蛋鸡
脂肪肝出血综合征
polysavone
laying hens
fatty liver hemorrhagic syndrome
