通过对照试验,验证大豆浓缩蛋白替代一定比例的红鱼粉在黄颡鱼成鱼中应用的可行性。试验设计3组等氮等脂饲料,大豆浓缩蛋白替代红鱼粉水平分别为0、28.5%和57.0%,同时在替代组中添加2%的鱿鱼膏作为诱食剂。选取初始体重为(56.0±0....通过对照试验,验证大豆浓缩蛋白替代一定比例的红鱼粉在黄颡鱼成鱼中应用的可行性。试验设计3组等氮等脂饲料,大豆浓缩蛋白替代红鱼粉水平分别为0、28.5%和57.0%,同时在替代组中添加2%的鱿鱼膏作为诱食剂。选取初始体重为(56.0±0.2)g的黄颡鱼成鱼360尾,随机分成3组,每组4个重复,每个重复30尾鱼,进行为期8周的养殖试验。结果表明,替代组成活率、增重率、特定生长率、蛋白质效率、饲料效率、体组成及形体指标与对照组差异不具有统计学意义( P >0.05)。由此得出,在本试验条件下,用大豆浓缩蛋白替代部分红鱼粉应用于黄颡鱼成鱼饲料中是可行的。展开更多
This paper reviews the changes in pork production in China,the largest pork producing and consuming nation in the world.The pork sector in China has changed dramatically since the 1990s,with large-scale intensive pork...This paper reviews the changes in pork production in China,the largest pork producing and consuming nation in the world.The pork sector in China has changed dramatically since the 1990s,with large-scale intensive pork production systems replacing the former,exclusively family-based pork production systems.Modern breeding,feeding,vaccinating,and management technologies are widely used now.However,smallholders still account for a large proportion of the total production.The intensification and specialization of the pork sector is expected to continue in the future,but there is increasing awareness and pressure to develop more environmentally-sustainable production systems.The relative shortage of domestically produced feed,the low utilization efficiency of feed ingredients,the large emissions of nitrogen and phosphorus to the environment,the high use of antibiotics,and the presence of residual metals in manures are very large challenges for the pork sector nowadays.To solve these problems,techniques including new feed resource utilization,precise feeding,low-protein diets,alternatives to antibiotics and increased manure recycling are all important topics and research directions today.With new techniques and management approaches,it is possible to build more sustainable pork production systems in China.展开更多
文摘通过对照试验,验证大豆浓缩蛋白替代一定比例的红鱼粉在黄颡鱼成鱼中应用的可行性。试验设计3组等氮等脂饲料,大豆浓缩蛋白替代红鱼粉水平分别为0、28.5%和57.0%,同时在替代组中添加2%的鱿鱼膏作为诱食剂。选取初始体重为(56.0±0.2)g的黄颡鱼成鱼360尾,随机分成3组,每组4个重复,每个重复30尾鱼,进行为期8周的养殖试验。结果表明,替代组成活率、增重率、特定生长率、蛋白质效率、饲料效率、体组成及形体指标与对照组差异不具有统计学意义( P >0.05)。由此得出,在本试验条件下,用大豆浓缩蛋白替代部分红鱼粉应用于黄颡鱼成鱼饲料中是可行的。
基金the National Natural Science Foundation of China(32072764,31702121,31630074,and 31972596)Sichuan Science and Technology Program(2018HH0160)Chinese Scholarship Council(201913043).
文摘This paper reviews the changes in pork production in China,the largest pork producing and consuming nation in the world.The pork sector in China has changed dramatically since the 1990s,with large-scale intensive pork production systems replacing the former,exclusively family-based pork production systems.Modern breeding,feeding,vaccinating,and management technologies are widely used now.However,smallholders still account for a large proportion of the total production.The intensification and specialization of the pork sector is expected to continue in the future,but there is increasing awareness and pressure to develop more environmentally-sustainable production systems.The relative shortage of domestically produced feed,the low utilization efficiency of feed ingredients,the large emissions of nitrogen and phosphorus to the environment,the high use of antibiotics,and the presence of residual metals in manures are very large challenges for the pork sector nowadays.To solve these problems,techniques including new feed resource utilization,precise feeding,low-protein diets,alternatives to antibiotics and increased manure recycling are all important topics and research directions today.With new techniques and management approaches,it is possible to build more sustainable pork production systems in China.
