Dvorák J, Smíd K, Hrusovský J
Vet Med (Praha). 1985 Oct;30(10):629-36.
For the purpose of testing the effect of ionizing radiation, feeds for dogs (meat feed mixture VETACAN and loose feed mixture VETAVIT) irradiated by 60Co radioisotope at the dose of 25 kGy/kg were studied for 60 days. It has been found out that the total volume of energetic and non-energetic nutrients is not changed. Qualitative structure, however, displays a significant, on the average 35% disintegration of essential amino acids, decrease of proteins and increase of free ammonic bases. A significant oxidation effect of radiation is exerted on the decomposition of fats with a release of free fatty acids from glycerol bond in a process similar to rancidification (from 13.3-37.10 mg/g in meat mixture, from 103.1-103.04-135.04 mg/g in loose mixture). A certain disintegration of nutrients, only within the limits of significance, occurred also in the saccharide proportion of the loose feed mixture (acidity of water extract 348.8-403.99-436.60 mg/100 g). It has been proved that radiosterilization reliably secures microbiological and mycological sanitation of feeds and causes no sensory changes noticeable by human senses. It follows from the results that ionizing radiation has a pronounced antimicrobial and antimycotic effectiveness. However, it causes significant structural changes of energetic nutrients in the feeds of animal as well as of vegetable origin.
为了测试电离辐射的效果，对用剂量为25千戈瑞/千克的60Co放射性同位素辐照的犬用饲料（肉类饲料混合物VETACAN和散装饲料混合物VETAVIT）进行了60天的研究。结果发现，能量和非能量营养素的总量没有变化。然而，定性结构显示，必需氨基酸平均有35%显著分解，蛋白质减少，游离氨碱增加。辐射对脂肪分解有显著的氧化作用，在类似于酸败的过程中，甘油键释放出游离脂肪酸（肉类混合物中为13.3 - 37.10毫克/克，散装混合物中为103.1 - 103.04 - 135.04毫克/克）。散装饲料混合物的糖类比例也发生了一定程度的营养素分解，只是在显著范围内（水提取物酸度为348.8 - 403.99 - 436.60毫克/100克）。已证明辐射灭菌能可靠地确保饲料的微生物和霉菌卫生，且不会引起人类感官明显的感官变化。从结果可以看出，电离辐射具有显著的抗菌和抗真菌效果。然而，它会导致动物源性和植物源性饲料中能量营养素发生显著的结构变化。
