CAJ | 학술논문

研究富含限制性必需氨基酸发酵肽对泌乳中期奶牛产奶量及乳品质的影响。试验选用15头体质量、胎次、产奶量均相近的泌乳180d中国荷斯坦奶牛，采用完全随机区组设计，分为对照组、0．5％和1％发酵肽实验组。结果表明：0．5％和1％发酵肽实验组奶牛产奶量、乳蛋白率、乳脂率及乳干物质率与对照组相比差异均显著升高（P〈0．01），产奶量分别提高11．0％和13．7％，乳蛋白率分别提高5．6％和6．6％，乳脂率分别提高7．0％和7．5％，乳干物质率分别提高0．25％和0．67％，乳糖率也有一定程度的提高。结果表明：日粮中添加富含限制性必需氨基酸发酵肽可以很好地提高奶牛产奶量、乳蛋白率和乳脂率。
연구부함한제성필수안기산발효태대비유중기내우산내량급유품질적영향。시험선용15두체질량、태차、산내량균상근적비유180d중국하사탄내우，채용완전수궤구조설계，분위대조조、0．5％화1％발효태실험조。결과표명：0．5％화1％발효태실험조내우산내량、유단백솔、유지솔급유간물질솔여대조조상비차이균현저승고（P〈0．01），산내량분별제고11．0％화13．7％，유단백솔분별제고5．6％화6．6％，유지솔분별제고7．0％화7．5％，유간물질솔분별제고0．25％화0．67％，유당솔야유일정정도적제고。결과표명：일량중첨가부함한제성필수안기산발효태가이흔호지제고내우산내량、유단백솔화유지솔。
The objective of.this study was to determine if supplementing fermented peptides rich in limited essential amino acids to daily feed can increase milk yield and quality in Chinese Holstein dairy cows in mid-lactation （180 d）. Using randomized complete block design, 15 Chinese Holstein dairy cows with similar body weight, milk yield and number of births were assigned into three groups： control group, 0.5% supplementation group and 1% supplementation group. The results showed that milk yield （by 11.0% and 13.7%）, protein content （by 5.6% and 6.6%）, fat rate （by 7.0% and 7.5%, respectively） and dry matter rate （by 0.25 % and 0.67 %, respectively） of the 0.5% supplementation and the 1% supplementation groups were all significantly higher those of the control group （P 〈 0.01）. Similarly, milk sugar content was also increased. These findings demonstrate that supplementing fermented peptides rich in limited essential amino acids to daily feed can increase milk yield and quality in dairy cows effectively.