CAJ | 학술논문

旨在研究瘤胃保护性赖氨酸和蛋氨酸添加水平及其配比对小尾寒羊瘤胃发酵及粗饲料成分瘤胃降解率的影响。选用装有永久性瘤胃瘘管、体重（45±2．6） kg的小尾寒羊10只，按完全随机原则进行3阶段试验，每阶段预饲期12 d，正试期3 d。对照组饲喂基础日粮，试验组分别在基础日粮中添加不同水平及配比的保护性赖氨酸和蛋氨酸。结果表明：保护性氨基酸添加水平及其配比对瘤胃液pH值、NH3-N浓度、VFA含量及其比例无明显影响（ P＞0.05），但可不同程度提高菌体蛋白含量，其中I组极显著高于对照组（P＜0．01）；添加适当水平的保护性氨基酸，可明显提高DM、ADF的瘤胃降解率（P＜0．05），而对CF、NDF瘤胃降解率无显著影响（P＞0．05）。本试验条件下，每只小尾寒羊日粮中保护性赖氨酸及蛋氨酸的添加量分别以8．4，2．4 g／d为宜。
지재연구류위보호성뢰안산화단안산첨가수평급기배비대소미한양류위발효급조사료성분류위강해솔적영향。선용장유영구성류위루관、체중（45±2．6） kg적소미한양10지，안완전수궤원칙진행3계단시험，매계단예사기12 d，정시기3 d。대조조사위기출일량，시험조분별재기출일량중첨가불동수평급배비적보호성뢰안산화단안산。결과표명：보호성안기산첨가수평급기배비대류위액pH치、NH3-N농도、VFA함량급기비례무명현영향（ P＞0.05），단가불동정도제고균체단백함량，기중I조겁현저고우대조조（P＜0．01）；첨가괄당수평적보호성안기산，가명현제고DM、ADF적류위강해솔（P＜0．05），이대CF、NDF류위강해솔무현저영향（P＞0．05）。본시험조건하，매지소미한양일량중보호성뢰안산급단안산적첨가량분별이8．4，2．4 g／d위의。
This experiment was conducted to study effects of rumen protected Lysine and Methionine supple -ments on ruminant fermentation and roughages degradability of small-tail han sheep .A total of 10 small-tail han sheep((45 ±2.6) kg of body weight ) with permanent rumen cannula were selected for the study .The study was conducted in three replicates ,each of which lasted for 15 days(12 days of pre-testing period and 3 days of formal test period ) .Different supplements of protected lysine and methionine were added into basal diet .Protected amino acids supplements had no effects on rumen pH ,NH3-N concentration and VFA concentration (P>0.05).Compared to control group,mycoprotein content in group I was higher (P<0.01).Appropriate protected amino acids supplements could significantly improve the DM ,ADF rumen degradation rate ( P<0.05) but not the CF ,NDF ruminal degradation rates(P>0.05).It could be concluded from results that the appropriate supplement of protected Lysine and Methio -nine was 8.4,2.4 g/d per sheep under the experimental conditions ,respectively .