动物造模 z-bio 2021-09-06 459

　　Purpose Dogs are one of the earliest domesticated animals. In the 1940s, dogs began to be used as experimental animals for research. They are mainly used in experimental surgery, basic medicine, pharmacology, toxicology and some disease research in biomedicine. The development of biomedicine is of great significance. Providing standardized feeds with stable formulas for experimental dogs is an important part of improving experimental science. At present, the production of experimental dog food mainly adopts the puffing process. This article mainly studies the difference between the experimental dog food protein, fat, amino acid, vitamin and trace element detection value and the formula value under specific puffing conditions.

　　Methods According to the data provided by the "China Feed Components and Nutritional Value Table" (28th edition), the formula value of each nutrient component in the experimental dog food formula was calculated, and then the finished experimental dog food was sent to the laboratory to test the actual value. Compared.

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

　　Conclusion Under the conditions of puffing parameters set in this study, the loss of various nutrients in the experimental dog food is as shown in the results. Due to different puffing parameters, the effect on nutrients is different. Therefore, it is recommended that colleagues can appropriately adjust the ration formula according to the actual production situation.