Maggot meal was used to replace 0, 20% , 40% , 60% , 80% , 100% of the fish meal in the hasal feed, getting 6 kinds of feed with the same nitrogen content and equal energy （marked as group H0, H20, H40, H60, H80, H10...Maggot meal was used to replace 0, 20% , 40% , 60% , 80% , 100% of the fish meal in the hasal feed, getting 6 kinds of feed with the same nitrogen content and equal energy （marked as group H0, H20, H40, H60, H80, H100）, which were used to feed the Misgurnus anguillicaudatus （loach） for60 d. The effects of the fish meal replacement by maggot meal on the growth performance of M. anguiUicaudatus were studied by comparing the growth performances and body indica- tors of M. anguillicaudatus fed with different feed groups. The results showed that the final weight, weight gain rate, specific growth rate of the M. anguillicaudatus in group H40 showed no significant difference with the control P 〉0.05 ）, but was significantly higher than that of other groups P 〈0.05 ）. Moreover, except group H40, the feed coefficients of all other groups were significantly higher than that in control group （P 〈0.05 ）. The M. anguillicaudatus in group 1-140 had the highest condition factor and COR and the lowest viscera index, all of which showed significant differences with the other replacement groups （P 〈0.05） but the difference with the control group was not significant （P 〉 0.05）. Thus, a proportion of 40% of the fish meal replaced with maggot meal in the mixed feed for the M. anguilli- caudatus could improve the growth performance and physique indexes of M. anguillicaudatus.展开更多
To reduce the pressure on aquatic resources due to the use of fishmeal in fish feed, the mastery and use of alternative sources of fishmeal in all stages of fish development are essential. Five diets including 4 exper...To reduce the pressure on aquatic resources due to the use of fishmeal in fish feed, the mastery and use of alternative sources of fishmeal in all stages of fish development are essential. Five diets including 4 experimental and one control diet were considered. Experimental diets of post-larvae were developed from unconventional ingredients in which fishmeal was completely replaced by a mixture of brewer’s yeast, chicken viscera and maggots. These foods were tested on Clarias gariepinus post-larvae with an initial average weight of 80 ± 1 mg. 1500 fish individuals were equally distributed in 15 concrete basins with a volume of 500 L forming five treatments in triplicate. Fish individuals were fed, manually at a ration rate of 20%, four times per day. The specific growth rates were 8.38%/day in imported food and 6.35%/day in the experimental food receiving 45.5% of protein from unconventional meal. Similar results were obtained with the feed consumption index. These encouraging results show that it is possible to partially or completely replace fishmeal in catfish feed and obtain an economically profitable production. The recovery of waste such as chicken viscera, brewer’s yeast and soybean meal in fish food formulation as tested in this study is a good contribution to environmental sanitation.展开更多
试验对比研究了无菌蝇蛆蛋白粉替代中华鳖日本品系(Pelodiscus sinensis Japanese strain)(初始均重3.5 g左右)常规饲料中50%的鱼粉后,对其生长、肌肉和裙边质构参数、血清免疫和抗氧化指标的影响。结果表明,经过9个月的温室养殖,50%蝇...试验对比研究了无菌蝇蛆蛋白粉替代中华鳖日本品系(Pelodiscus sinensis Japanese strain)(初始均重3.5 g左右)常规饲料中50%的鱼粉后,对其生长、肌肉和裙边质构参数、血清免疫和抗氧化指标的影响。结果表明,经过9个月的温室养殖,50%蝇蛆蛋白粉替代组饲喂的幼鳖特定生长率相比于常规饲料组显著下降(P<0.05),而存活率有所提高(P>0.05);肌肉质构参数方面,蝇蛆蛋白粉替代组硬度降低(P<0.05),但粘性提高(P<0.05),裙边的内聚性参数显著下降(P<0.05)。蝇蛆蛋白粉饲料投喂能显著增强试验鳖血清中酸性磷酸酶和碱性磷酸酶活性(P<0.05),但对抗氧化指标和溶菌酶活性没有显著影响(P>0.05)。试验认为,蝇蛆蛋白粉可以替代中华鳖日本品系中部分饲料,但替代的适宜比例需进一步研究确定。展开更多
基金Supported by the College Project of Xuzhou Vocational College of Bioengineering(2014B07)
文摘Maggot meal was used to replace 0, 20% , 40% , 60% , 80% , 100% of the fish meal in the hasal feed, getting 6 kinds of feed with the same nitrogen content and equal energy （marked as group H0, H20, H40, H60, H80, H100）, which were used to feed the Misgurnus anguillicaudatus （loach） for60 d. The effects of the fish meal replacement by maggot meal on the growth performance of M. anguiUicaudatus were studied by comparing the growth performances and body indica- tors of M. anguillicaudatus fed with different feed groups. The results showed that the final weight, weight gain rate, specific growth rate of the M. anguillicaudatus in group H40 showed no significant difference with the control P 〉0.05 ）, but was significantly higher than that of other groups P 〈0.05 ）. Moreover, except group H40, the feed coefficients of all other groups were significantly higher than that in control group （P 〈0.05 ）. The M. anguillicaudatus in group 1-140 had the highest condition factor and COR and the lowest viscera index, all of which showed significant differences with the other replacement groups （P 〈0.05） but the difference with the control group was not significant （P 〉 0.05）. Thus, a proportion of 40% of the fish meal replaced with maggot meal in the mixed feed for the M. anguilli- caudatus could improve the growth performance and physique indexes of M. anguillicaudatus.
文摘To reduce the pressure on aquatic resources due to the use of fishmeal in fish feed, the mastery and use of alternative sources of fishmeal in all stages of fish development are essential. Five diets including 4 experimental and one control diet were considered. Experimental diets of post-larvae were developed from unconventional ingredients in which fishmeal was completely replaced by a mixture of brewer’s yeast, chicken viscera and maggots. These foods were tested on Clarias gariepinus post-larvae with an initial average weight of 80 ± 1 mg. 1500 fish individuals were equally distributed in 15 concrete basins with a volume of 500 L forming five treatments in triplicate. Fish individuals were fed, manually at a ration rate of 20%, four times per day. The specific growth rates were 8.38%/day in imported food and 6.35%/day in the experimental food receiving 45.5% of protein from unconventional meal. Similar results were obtained with the feed consumption index. These encouraging results show that it is possible to partially or completely replace fishmeal in catfish feed and obtain an economically profitable production. The recovery of waste such as chicken viscera, brewer’s yeast and soybean meal in fish food formulation as tested in this study is a good contribution to environmental sanitation.
文摘试验对比研究了无菌蝇蛆蛋白粉替代中华鳖日本品系(Pelodiscus sinensis Japanese strain)(初始均重3.5 g左右)常规饲料中50%的鱼粉后,对其生长、肌肉和裙边质构参数、血清免疫和抗氧化指标的影响。结果表明,经过9个月的温室养殖,50%蝇蛆蛋白粉替代组饲喂的幼鳖特定生长率相比于常规饲料组显著下降(P<0.05),而存活率有所提高(P>0.05);肌肉质构参数方面,蝇蛆蛋白粉替代组硬度降低(P<0.05),但粘性提高(P<0.05),裙边的内聚性参数显著下降(P<0.05)。蝇蛆蛋白粉饲料投喂能显著增强试验鳖血清中酸性磷酸酶和碱性磷酸酶活性(P<0.05),但对抗氧化指标和溶菌酶活性没有显著影响(P>0.05)。试验认为,蝇蛆蛋白粉可以替代中华鳖日本品系中部分饲料,但替代的适宜比例需进一步研究确定。
