Chen Jingshen, Liu Nan, Wang Shumeng, Wang Hailong, Ouyang Kun, Wang Yuxuan, Luo Junyi, Sun Jiajie, Xi Qianyun, Sun Yuping, Si Yongguo, Zhang Yongliang, Chen Ting
Guangdong Province Key Laboratory of Animal Nutritional Regulation, National Engineering Research Center for Breeding Swine Industry, State Key Laboratory of Livestock and Poultry Breeding, South China Agricultural University, College of Animal Science, Guangzhou 510642, China.
Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture in Rural Affairs, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Animals (Basel). 2025 Aug 6;15(15):2297. doi: 10.3390/ani15152297.
The present study evaluated the effect of adding 0% (control), 30%, 40% and 50% SPMs (small-peptide chelating trace minerals) to replace ITMs (inorganic trace minerals) in the diets of ; 720 shrimp were randomly assigned to four treatments (six replicates per group, 30 shrimp per replicate) in a 42-day feeding trial. There were no significant differences ( > 0.05) among the control, 40% SPM and 50% SPM groups in terms of the survival rate, weight gain rate, specific growth rate, hepatosomatic index, condition factor, feed intake, feed conversion ratio, or protein efficiency ratio; however, protein efficiency ratio was reduced in the 30% SPM group ( < 0.05). Glucose, triglyceride, and aspartate aminotransferase levels in the hemolymph of the 30% SPM group were significantly increased ( < 0.05), while the glucose and aspartate aminotransferase levels were also significantly increased in the 40% SPM group ( < 0.05). In the 50% SPM group, the glucose and triglyceride levels were also significantly increased ( < 0.05). Hepatopancreatic alkaline phosphatase activity was elevated at 40% SPM, and alkaline phosphatase, acid phosphatase, glutathione peroxidase, and total antioxidant capacity activities were significantly increased in the 50% SPM group ( < 0.05). The moisture content and drip loss were reduced in both the 40% and 50% SPM groups ( < 0.05). Therefore, replacing 40-50% ITMs with SPMs can maintain growth performance while enhancing physiological functions. In conclusion, the results of this study demonstrate that the incorporation of 30-50% SPMs into one's diet constitutes a viable alternative to 100% ITMs.
本研究评估了在凡纳滨对虾饲料中添加0%（对照组）、30%、40%和50%的小肽螯合微量元素（SPMs）以替代无机微量元素（ITMs）的效果；在为期42天的饲养试验中，将720尾凡纳滨对虾随机分为4组处理（每组6个重复，每个重复30尾虾）。对照组、40%SPM组和50%SPM组在存活率、增重率、特定生长率、肝体指数、肥满度、摄食量、饲料转化率或蛋白质效率方面无显著差异（P>0.05）；然而，30%SPM组的蛋白质效率降低（P<0.05）。30%SPM组血淋巴中的葡萄糖、甘油三酯和天冬氨酸转氨酶水平显著升高（P<0.05），40%SPM组的葡萄糖和天冬氨酸转氨酶水平也显著升高（P<0.05）。50%SPM组的葡萄糖和甘油三酯水平也显著升高（P<0.05）。40%SPM组肝胰腺碱性磷酸酶活性升高，50%SPM组的碱性磷酸酶、酸性磷酸酶、谷胱甘肽过氧化物酶和总抗氧化能力活性显著增加（P<0.05）。40%和50%SPM组的水分含量和滴水损失均降低（P<0.05）。因此，用SPMs替代40-50%的ITMs可以维持生长性能，同时增强生理功能。总之，本研究结果表明，在饲料中添加30-50%的SPMs是100%ITMs的可行替代品。
