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首页> 外文期刊>Bangladesh journal of fisheries research >Development of low cost feed using local ingredients for culture of freshwater prawn, Macrobrachium rosenbergii in ponds
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Development of low cost feed using local ingredients for culture of freshwater prawn, Macrobrachium rosenbergii in ponds

机译：利用本地成分开发低成本饲料，用于池塘淡水虾罗氏沼虾养殖

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摘要

Two experiments were conducted to formulate and evaluate test diets using locally available ingredients to find out suitable diets for mono and polyculture of Macrobrachium rosenbergii in ponds. The first experiment was conducted from 1 July 2003 to 29 September 2003 in 12 experimental ponds each measuring 30 m~2 behind the Fisheries Faculty Building, BAU campus, Mymensingh. Three experimental diets containing 30% protein were formulated using fish meal, meat and bone meal, mustard oilcake, sesame meal and rice bran and assigned to treatments 1, 2 and 3, respectively. A special shrimp feed (Starter-II) from Saudi-Bangla Fish Feed Ltd. was assigned to treatment 4 (Control). Each treatment had three replications. Juveniles of M. rosenbergii (2.90±0.81g) were stocked at the rate of 4/m~2. Prawns were fed three times daily at the rate of 15% of their body weight at the beginning, which was gradually reduced to 10% and 5% for the last two months. There was no significant (P>0.05) difference between theweight gains of prawns fed diets 1 and 4 (control), but they were significantly (P<0.05) higher than those of diets 2 and 3. The FCR values of diets ranged between 2.61 to 3.36 with diets 1 and 4 showing significantly (P<0.05) lower FCR values. The survival rate of prawns ranged between 68 to 78% with prawns fed diets 1 and 4 showing significantly higher survival rate. The production of prawn ranged from 921 to 1,428 kg/ha/90 days and diet 1 gave the highest production. Treatment 1 gave the highest netprofit of Tk. 161,980/ha/90 days. The second experiment was conducted from December, 2003 to April, 2004 to see the growth of over wintered M. rosenbergii juveniles in polyculture with indigenous major carps (catla and rohu) in ponds using formulated diets. Three isoenergetic experimental diets formulated using fish meal, meat and bone meal, mustard oil cake, rice bran, wheat bran and molasses, and a shrimp feed "Golda special feed' from Saudi-Bangla Fish Feed Ltd. were assigned to treatments 1, 2, 3 and 4 (control), respectively, each treatment had two replications. Eight experimental ponds each measuring 80 m~2 in the Field Laboratory Complex of the Faculty of Fisheries, BAU campus, Mymensingh were used. The mean initial weights of M. rosenbergii, catla and rohu were 1.60±0.01, 30.0±0.09 and 25.0±0.08 g, respectively. A total of 160 fish and prawn (20,000/ha) were stocked in each pond at the ratio of 2:1:1 (prawn: catla: rohu). Fish were fed at the rate of 3-5% of their body weight. Prawns fed diet 1, 2 and 4 showed higher weight gains compared to diet 3. The weight gain of catla was significantly higher in T_1 while in case of rohu was higher in T_1 and T_4, respectively.
机译：进行了两个实验，以使用当地可用的成分配制和评估测试日粮，以找到适合池塘中罗氏沼虾单养和混养的饮食。第一个实验于2003年7月1日至2003年9月29日在Mymensingh BAU校区渔业学院大楼后面的12个实验池塘中进行，每个实验池塘的面积为30 m〜2。使用鱼粉，肉和骨粉，芥末油饼，芝麻粉和米糠配制了三种含30％蛋白质的实验饮食，分别分配给处理1、2和3。来自沙特-孟加拉鱼饲料有限公司的一种特殊的虾饲料（Starter-II）被指定为处理4（对照）。每种处理均重复三遍。罗氏沼虾幼体（2.90±0.81g）的放养率为4 / m〜2。大虾每天开始喂食3次，开始时体重的15％，在最近两个月逐渐降低到10％和5％。饲喂日粮1和4（对虾）的对虾增重之间没有显着差异（P> 0.05），但显着高于日粮2和3（P <0.05）。日粮的FCR值在2.61之间饮食中的1和4显示为3.36至3.36，FCR值显着降低（P <0.05）。大虾的成活率在68％到78％之间，饲喂日粮1和4的大虾的成活率明显更高。对虾的产量范围为921至1,428千克/公顷/ 90天，并且饮食1的产量最高。处理1带来了Tk最高的净利润。 161,980 /公顷/ 90天。第二项实验于2003年12月至2004年4月进行，目的是观察采用配方饲料的池塘中池塘混养的罗氏沼虾幼体在与本地主要鲤鱼（卡特拉和罗胡）混养的过程中的生长情况。用鱼粉，肉和骨粉，芥末油饼，米糠，麦麸和糖蜜和来自沙特-孟加拉鱼饲料有限公司的虾饲料“戈达特种饲料”配制的三种同能实验饲料被分配到处理1、2分别为3、4和4（对照），每个处理重复两次，使用Mymensingh BAU校园水产学院的田间实验室综合楼中的八个实验池塘，每个池塘的面积为80 m〜2。罗氏沼虾，卡特罗氏沼虾和罗氏沼虾分别为1.60±0.01、30.0±0.09和25.0±0.08 g，每个池塘中以2：1：1的比例放养了160只鱼和虾（20,000 /公顷）（虾：鱼以其体重的3-5％的速度喂食，饲喂日粮1、2和4的虾比日粮3的增重更高。 T_1和T_4的rohu病例分别较高。

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