动物造模 z-bio 2022-06-23 349

　　The target dog is one of the earliest domesticated animals. In the 1940s, dogs began to be used as experimental animals for research. In biomedicine, they were mainly used in experimental surgery, basic medicine, pharmacology, toxicology and some disease research. The development of biomedicine is of great significance. Providing standardized feeds with stable formulas for experimental dogs is an important part of improving the scientificity of experiments. At present, the production of experimental dog food mainly adopts the puffing process. This paper mainly studies the difference between the test value and the formula value of the experimental dog food protein, fat, amino acids, vitamins and trace elements under specific extruding conditions.

　　Methods According to the data provided by the "Chinese Feed Composition and Nutritional Value Table" (28th edition), the formula values of each nutrient composition in the experimental dog food formula were calculated, and then the finished experimental dog food was sent to the laboratory to detect the actual value, and the two were carried out. Compared.

　　Results After the experimental dog food was expanded, the fat loss was 6%, histidine, lysine, and methionine were lost by 8%, 6%, and 2%, respectively, and the loss rates of vitamin E, vitamin B2, niacin, choline, and vitamin B6 were respectively 29%, 65%, 46%, 1%, 81%.

　　Conclusion Under the conditions of the expansion parameters set in this study, the loss of each nutrient in the experimental dog food is shown in the results. Due to different puffing parameters, the impact on nutrients is different. Therefore, it is recommended that peers can appropriately adjust the diet formula according to the actual production situation.