摘要
为研究DL-蛋氨酸对瘤胃消化代谢的影响,本试验选取4只体重约30 kg,装置永久性瘤胃瘘管的槐山羊,采用4×4拉丁方设计,在4期试验中分别经瘤胃投饲0（对照组）、4、6、8 g/d.只DL-蛋氨酸。结果表明：①与对照组相比,给槐山羊投饲6-8 g/d.只DL-蛋氨酸,显著降低瘤胃液pH,但不影响瘤胃液氨态氮浓度。②各处理组分别提高乙、丙、丁酸平均浓度7.2%-30.1%、43.6%-102.3%、15%-35.4%,总VFA平均浓度提高幅度为13.3%-38.3%,基本上各处理组在添加6-8 g/d.只达到显著水平。③添加8 g/d.只DL-蛋氨酸可以显著提高前胃干物质、半纤维素的消失量,分别为85和45 g/d,消失率分别提高6.6%、12.2%。以及提高钙到达十二指肠的量和率。前胃纤维素的消失量和消失率均有随添加量增加而增加的趋势。以上结果提示：供给槐山羊6-8 g/d.只DL-蛋氨酸是可以改善瘤胃对干物质和粗纤维的消化和瘤胃代谢状况的。
Four huai goats （average life weight 30 kg） fitted with permanent rumen fistula were chosen to study effects of digestion and metabolism in rumen. The experiment was designed as 4 × 4 Latin square. During four periods, the goats were feed respectively 0,4,6,8 g DL-methionine in rumen. The results showed： （1）Compared to the controlled group, the pH in rumen of goats added 6-8 g DL-methionine every day was lowed significantly, but it had not effects of ammonia nitrogen levels. （2）The average levels of CH3COOH, CH3CH2COOH, CH3CH2CH2COOH were improved respectively 7. 2% -30. 1%, 43.6%-102.3%, 15%-35.4% among four treatments. The average levels of total VFA were improved to 13.3-38.3%. The significant levels were found when they were added 6-8 g DL-methionine. （3）The disappear number of DM and half cellulose were improved significantly if added 8 g DL-methionine in rumen every day. The disappear number of DM and half cellulose were improved respectively 85 g and 45 g every day, and the rates of DM and half cellulose were improved respectively 6. 6% and 12.2%. At the same time, the number and rates of Ca in twelve bowel were improved. With the improvement of additive, the improved trends of number and rates of DM and half cellulose were found. In a word, if the goats were added 6-8 g DL-methionine, the digestion of rumen may be improved.
出处
《中国畜牧兽医》
CAS
2007年第7期21-25,共5页
China Animal Husbandry & Veterinary Medicine
关键词
DL-蛋氨酸
槐山羊
瘤胃
消化代谢
DL-methionine
huai goats
rumen
digestion and metabolism
