论文部分内容阅读
国外用人粪尿、牛粪尿和稻草制成混合浆,经发酵后,作为蓝罗非鱼的部分饲料,取得较好效果,即在饲料中添加50％的这种混合浆与含粗蛋白28％的饲料一起喂蓝罗非鱼。这主要是由于发酵混合浆能够降低水体生物耗率量,促进水生生物迅速生长。Gaigher在南非澳兰治省用猪粪肥、生活废弃物,进行网箱养殖罗非鱼的对比试验,在密度为每立方米水体105尾的情况下。经98天养殖,猪粪池塘的罗非鱼由个体始重19.2克增加到155.9克,死亡率为5％,南非具备罗非鱼生长的温度
Foreign manure, cow manure and straw made of mixed slurry, after fermentation, as part of blue tilapia feed, and achieved good results, that is, to feed 50% of this mixed slurry and crude protein 28 % Of the feed with blue tilapia. This is mainly due to the fermentation mixture can reduce the water consumption rate of biomass, and promote the rapid growth of aquatic organisms. Gaigher uses pig manure and domestic waste in the province of Oran, South Africa for a comparative test of cage culture of tilapia at a density of 105 fish per cubic meter of water. After 98 days of breeding, tilapia in swine manure ponds increased from 19.2 g in individuals to 155.9 g in individuals with a 5% mortality rate and South Africa had the temperature for growth of tilapia