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试验旨在评估黄粉虫粉(MM)作为凡纳滨对虾养殖中蛋白质来源的可行性。饲料分为正常饲料和试验饲粮,试验饲料中包含正常饲料85%和MM 15%,两种饲料中均含有氧化铬0.5%作为惰性标记,试验采用表观消化率系数(ADC)对两种饲料进行检测。为评估MM消化价值,对虾饲料中采用鱼粉替代MM,替代比例分别为0%、25%、50%、75%和100%,在清水中饲养6周后,对生长参数和整个虾体成分进行评估。干物质ADC为45.9%,能量ADC为66.5%,粗蛋白质ADC为76.1%,必须氨基酸ADC为72%~86%。MM中蛋氨酸为第一限制性氨基酸。饲料中添加MM后,各组间对虾的体增重、特定生长率、采食量、饲料转化率、存活率和蛋白质合成率均无显著变化(P>0.05),虾体蛋白质含量无显著差异(P>0.05)。而随着鱼粉替代比例上升,虾体脂含量从1.13%升至1.88%。结果表明,黄粉虫粉可作为凡纳滨对虾饲料中的替代蛋白质饲料,但添加时应注意补充蛋氨酸。
The test was designed to evaluate the feasibility of Tenebrio powder (MM) as a protein source for Litopenaeus vannamei farming. The feed was divided into normal and experimental diets. The experimental diets consisted of 85% of normal feed and 15% of MM, both of which contained 0.5% of chromium oxide as an inert marker. The test adopted apparent digestibility coefficient (ADC) Feed testing. To assess the digestive value of MM, fishmeal was used instead of MM in shrimp feeds at 0%, 25%, 50%, 75%, and 100% replacement rates, respectively, and after growth for 6 weeks in clear water, growth parameters and whole body shrimp components Evaluation. The dry matter ADC was 45.9%, the energy ADC was 66.5%, the crude protein ADC was 76.1% and the amino acid ADC was 72% ~ 86%. Methionine in MM is the first limiting amino acid. There was no significant difference in the body weight gain, specific growth rate, feed intake, feed conversion rate, survival rate and protein synthesis rate between shrimp (P> 0.05) and no significant difference in protein content (P> 0.05). With the increasing proportion of fishmeal substitution, the fat content of shrimp rose from 1.13% to 1.88%. The results showed that Tenebrio powder can be used as an alternative protein feed to Litopenaeus vannamei feed, but should be supplemented with methionine when added.