日糧中添加尿素蛋白粉劑對山羊血清尿素氮濃度之影響

Effects of adding urea-protein powder into ration on the serum urea nitrogen concentration of goats

許佳憲(Jia-Shian Shiu) ； 王勝德(Sheng-Der Wang) ； 楊深玄(Shen-Shin Yung) ； 蘇安國(An-Kuo Su)

《畜產研究》 46卷1期 (2013/03) Pp. 71-80

摘要

本研究旨在探討自行研發之尿素蛋白粉劑添加於山羊日糧中對其血清尿素氮濃度之影響。試驗結果顯示，自行調製之尿素蛋白粉劑在水溫39及70℃恆溫水槽中的溶解度均比尿素慢，且其在瘤胃開窗之荷蘭牛瘤胃中的解離速度亦比尿素慢。評估山羊對尿素蛋白粉劑之耐受性方面，本試驗以其血中尿素氮濃度為監控指標。結果顯示，努比亞阿爾拜因雜交閹公羊、臺灣黑山羊閹公羊及臺灣黑山羊女羊，均可耐受短期或長期在日糧中添加2% 之尿素蛋白粉劑。顯示本自製的尿素蛋白粉劑可使用於肉羊飼料，除可提供山羊額外氮素來源外，並可避免其瘤胃氨態氮與血清尿素氮濃度迅速增加，而導致山羊產生中毒現象。

關鍵字

尿素蛋白粉劑 ； 山羊 ； 血清尿素氮

並列摘要

Urea-protein powder (UPP), made from urea by TLRI Hengchung Branch, was used to evaluate its effects on the blood urea nitrogen (BUN) concentration of goat. Decron bag techniques had been used for measuring the solubility of UPP in the water and the degradability of UPP inside the fistulated rumen of Holstein cattle. The result showed that UPP had lower solubility and degradability than that of urea in the water or rumen. On the urea tolerance experiments, eight castrated Nubian hybrid male kids were used to measure the toleration of BUN concentration on test goat. The ration contained 0%, 0.5%, 1% and 2% of UPP were used for deciding the suitable dosage of UPP in goat ration. The experiments last 30 days and the result showed that 2% of UPP can be used in the ration without affecting the physical activity and increased the BUN concentration of goats. Furthermore, ten castrated male Taiwan black goats and twelve Taiwan black doeling were fed with 2% of UPP ration for a day or 184 days long-term investigation. The results showed that there were no difference on BUN concentration for both goat and doeling in experimental and control groups. The UPP product can be used as a protein substitute for meat goat in a long period of time.

並列關鍵字

Urea-protein powder ； Serum urea nitrogen ； Goat