摘要
豆饼用２ｇ／ｋｇＤＭ甲醛处理后，１０ｈ瘤胃干物质（ＤＭ）降解率从８７．１９％下降到豆饼含水量为１４％的６０．９３％和含水量１８％时的５６．２９％，粗蛋白降解率从８７．６９％分别下降到４８．３６％和４３．４３％。随着甲醛用量的增加，干物质和粗蛋白的降解率可进一步下降，但下降幅度减少。在甲醛用量低于２ｇ／ｋｇＤＭ的情况下，甲醛用量对ｐＨ为４．５时的胃蛋白酶４ｈ和８ｈ干物质和粗蛋白消化率没有明显影响，但甲醛用量超过２ｇ／ｋｇＤＭ后，随着甲醛用量的增加，ｐＨ为４．５时的胃蛋白酶干物质和粗蛋白消化率呈直线下降。但是ｐＨ为１．５时的４ｈ和８ｈ胃蛋白酶干物质和粗蛋白消化率几乎不受甲醛用量的影响。
The dry matter(DM)degradability of soybean meal treated with 2g/kg DM formaldehyde for 10 hour incubation in the rumen decreases from 87.17% to 60.93%for 14% moisture soybean and 56.29% for 18% mositure soybean.The crude protein (CP) degredability decreases from 87.69% for untreated soybean to 48.36% and 43.43% for 14% and 18% moisture soybean meal treated with formaldehyde.The DM and CP degradability may further decrease as the level of formaldehyde increases.Soybean meal that treated with formaldehyde in excess of 2g/kg DM result in a marked reduction of DM and CP digestibility after incubation with pepsin at pH 4.5 for 4 and 8 hours.However,soybean meal incubated with pepsin-dyhychloric acid(pH=1.4)for 4 and 24 hours did not indicate any change in DM and CP digestibility with different amounts of formaldehyde.
出处
《黄牛杂志》
1999年第1期17-19,共3页
Journal of Yellow Cattle Science
基金
云南省计委科技攻关项目
关键词
豆饼
甲醛处理
瘤胃降解率
胃蛋白酶消化率
soybean meal, formaldehyde treatment, rumen degradability, pepsin digestibility
