论文部分内容阅读
湖南省长沙市水产科技推广站,今年用筛选出的913号饲料为主要饲料,进行美国青蛙的高密度集约化养殖。在面积11.2平方米孵化槽中放养平均体重25克幼蛙1110尾,经三个月饲养,蛙池面积扩到20.3平方米,产蛙232.5公斤,净产204.2公斤,平均体重达227.5克,饵料系数1.59,每净产1公斤蛙需饲料成本6.36元。饲养中未见蛙类有厌食或由营养不良而引起的各种症状。913号配方是:含粗蛋白33.3%、粗脂肪2.99%,无氮浸出物24.44%、水分20.6%,灰分16.82%,钙2.19%,磷0.83%,食盐1.48%,还有其他微量元素和多种维生素。现该项目
Changsha City, Hunan Province Fisheries Science and Technology Promotion Station, this year with the selected 913 feed as the main feed, the United States intensive high-density frog breeding. In an area of 11.2 square meters incubator stocked an average of 25 grams of body weight 1110 frogs, after three months feeding, frog pool area expanded to 20.3 square meters, producing frog 232.5 kg net 204.2 kg, average weight of 227.5 grams, bait The coefficient of 1.59, per net production of 1 kg frog feed costs 6.36 yuan. Feeding no frogs have anorexia or malnutrition caused by a variety of symptoms. No. 913 formula is as follows: 33.3% of crude protein, 2.99% of crude fat, 24.44% of nitrogen-free extract, 20.6% of moisture, 16.82% of ash, 2.19% of calcium, 0.83% of phosphorus and 1.48% Kinds of vitamins Now this project