摘要
对^（６０）ＣＯ－γ射线辐照大鼠与小鼠颗粒饲料的有效灭菌剂量和辐照后饲料的营养成分。有效保存期及饲喂效果进行了研究。结果表明，ＳＰＦ级动物饲料的有效灭菌剂量为２５ｋＧｙ，辐照灭菌后的有效保存期至少为９０ｄ，而以３０ｋＧｙ辐照剂量灭菌的饲料可以保存１８０ｄ．饲料经辐照灭菌后，仅维生素Ｂ１减少２０％左右，其余营养成分无明显损失。而以高压蒸汽法（１２１℃，３０ｍｉｎ）灭菌的饲料其粗蛋白和维生素等均有不同程度的损失，尤其是维生素Ｂ１损失约５０％。以两种不同方法灭菌的饲料分别饲喂裸小鼠，结果：辐照饲料组裸鼠的体重显著高于高压灭菌组（Ｐ＜０．０５）。
To determine the effective sterilizing dose of(60)Co-γ ray for rat and mouse feed,the granulated feed was radiated with(60)Co-γ ray in different doses. The resultshowed that the effective dose was 25 kGy.The storage term of the radiated feedwas at least 90d. When the feed was radiated with a dose of 30 kGy, its storageterm exceeded 180d. No marked distruction of the nutrients of the radiated feedwas found except vitman B1 which decreased about 20%,while in the autoclaved(121℃ 30 min)feed the crude protein,amino acids and vitmans decreased, especially the vitman B1 decreased about 50%.The weanling nude mice fed with theradiated feed (25 kGy) for one month grew faster than those fed with the autoclaved feed (P<0 .05).
出处
《上海实验动物科学》
1995年第4期201-205,共5页
Shanghai Laboratory Animal Science
关键词
饲料
钴60-r射线
消毒
实验动物
Feed ￣(60)Co-γ radiation Sterilized dose Nutrient Storage term Feeding effect
