论文部分内容阅读
在中国江西省吉安市进行了斑点叉尾(鱼回)的示范养殖试验,旨在示范利用美国大豆协会的80:20池塘养殖模式和豆粕型鱼苗和鱼种饲料养殖斑点叉尾(鱼回)鱼种的生产情况。试验在3口2亩大小的池塘内进行,放养密度为斑点叉尾(鱼回)鱼苗8000尾/亩(即120000尾/公顷),并搭配放养白鲢鱼苗1000尾/亩(或15000尾/公顷)。经109天饲养,斑点叉尾(鱼回)苗从平均1克/尾长至39克/尾。养殖的平均毛产量为斑点叉尾(鱼回)269千克/亩(4038千克/公顷)和白鲢50千克/亩(750千克/公顷)。斑点叉尾(鱼回)和鲢鱼的平均成活率分别为86.8%和6.4%。投喂豆粕型鱼苗和鱼种饲料,斑点叉尾(鱼回)的平均饲料转化率为0.96:1。养殖的平均净收入为人民币1646元/亩,平均经济回报率为62.3%。利用美国大豆协会的豆粕型饲料和80:20池塘养殖技术,斑点叉尾(鱼回)展示了良好的生长、摄食和饲料转化效率。
A pilot demonstration of channel catfish (fish back) was conducted in Ji’an City, Jiangxi Province, China, to demonstrate the use of the ASA 80:20 pond culture model and the cultivation of channel catfish (fish back) Fish species production. The experiment was conducted in 3 ponds of 2 mu in size with stocking density of 8,000 fish per mu (ie 120,000 fish per hectare) and 1,000 silver carp per hectare (or 15,000 fish per hectare) Hectare). After 109 days of feeding, Channel Catfish fishlings grew from an average of 1 g / tail to 39 g / tail. The average gross yields of farms are 269 kg / mu (4038 kg / ha) and 50 kg / ha (750 kg / ha) of silver carp for channel catfish. The average survival rates of channel catfish (fish back) and silver carp were 86.8% and 6.4%, respectively. The average feed conversion rate of channel catfish (fish back) was 0.96: 1 when soybean meal-type fry and feed were fed. The average net income of aquaculture is Rmb1646 / mu and the average economic rate of return is 62.3%. Channel catfish (FISH) demonstrated good growth, feeding and feed conversion efficiency using the Soybean Association soybean meal-based feed and 80:20 pond farming techniques.