The aim of this study was to assess the effects of fishmeal replacement using a mixed blend of fermented soybean, chicken, blood, pork and shrimp meal in the diets for subadult Chinese mitten crab (Eriocheir sinensis). Five diets were formulated by replacing 0%, 17%, 33%, 50% and 67% of fishmeal with a protein mixture (Diet 1–Diet 5). The subadult crabs (male: female = 1:1) were stocked into 15 ponds in triplicate and fed the experimental diets for 110 days. The results showed that there was no significant difference in the survival and growth of crabs in all treatments. The hepatosomatic index and total lipid content of males increased, while the crude protein content decreased with fishmeal replacement. However, the gonadosomatic index, meat yield, total edible yield and their respective nutritional compositions were minimally affected in both males and females. The serum glutamic–pyruvic transaminase activity of male and female crabs fed Diet 5 was significantly highest, while the hepatopancreas MDA content of males fed Diet 4 was highest. An economic analysis demonstrated that the highest production value and partial gross returns were apparent when feeding Diet 4. This study suggests the optimal level of fishmeal replacement was 33% and 50% for male and female crabs, respectively.

中文翻译：

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用混合蛋白替代鱼粉引起了中华绒螯蟹养殖性能和生理效应的性别差异

这项研究的目的是评估使用发酵大豆，鸡肉，血液，猪肉和虾粉的混合饲料替代鱼粉对亚成年中华绒螯蟹（中华绒螯蟹）饮食的影响。）。通过用蛋白混合物（饮食1至饮食5）代替鱼粉的0％，17％，33％，50％和67％来制定五种饮食。将亚成年螃蟹（雄性：雌性1：1）以一式三份放到15个池塘中，并喂食实验日粮110天。结果表明，在所有处理中，蟹的生存和生长均无显着差异。雄鱼的肝体指数和总脂质含量增加，而粗蛋白含量随着鱼粉的替代而降低。但是，雄性和雌性中性腺体指数，肉产量，总可食产量及其各自的营养成分受到的影响最小。饲喂日粮5的雄性和雌性蟹的血清谷氨酸-丙酮酸转氨酶活性最高，饲喂日粮4的雄性蟹的肝胰腺MDA含量最高。