CAJ | 학술논문

本文旨在研究微生物发酵饲料对泌乳奶牛产奶量、乳品质以及饲粮养分表观消化率的影响。选用210头产奶量及体况相近的荷斯坦黑白花奶牛，随机分为对照组、试验Ⅰ组和试验Ⅱ组，每组70头牛。对照组饲喂原场全混合日粮，试验Ⅰ组和试验Ⅱ组分别用1和2 kg微生物发酵饲料等质量替代原基础精料，预试期10 d，正试期24 d，每天记录每头牛的产奶量，取样测定各组乳成分和饲粮养分的表观消化率。结果表明：1）试验Ⅰ组（替代1 kg精料）和试验Ⅱ组（替代2 kg精料）全期产奶量分别比对照组高出3．42％（ P＜0．05）和4．40％（ P＜0．05）。2）试验Ⅱ组各乳成分含量及乳密度都显著高于对照组（ P＜0．05），试验Ⅱ组的乳蛋白、乳脂肪和乳糖含量分别比试验Ⅰ组高出3．11％（P＜0．05）、6．71％（P＜0．05）和2．92％（P＜0．05）。3）试验Ⅱ组饲粮各养分的表观消化率都显著高于对照组（ P＜0．05），试验Ⅰ组的干物质、粗蛋白质和酸性洗涤纤维的表观消化率显著高于对照组（ P＜0．05）。综上，适当水平的微生物发酵饲料能提高泌乳奶牛的产奶量和饲粮各养分的表观消化率、改善乳品质。微生物发酵饲料替代2 kg原基础精料的效果优于替代1 kg原基础精料。
본문지재연구미생물발효사료대비유내우산내량、유품질이급사량양분표관소화솔적영향。선용210두산내량급체황상근적하사탄흑백화내우，수궤분위대조조、시험Ⅰ조화시험Ⅱ조，매조70두우。대조조사위원장전혼합일량，시험Ⅰ조화시험Ⅱ조분별용1화2 kg미생물발효사료등질량체대원기출정료，예시기10 d，정시기24 d，매천기록매두우적산내량，취양측정각조유성분화사량양분적표관소화솔。결과표명：1）시험Ⅰ조（체대1 kg정료）화시험Ⅱ조（체대2 kg정료）전기산내량분별비대조조고출3．42％（ P＜0．05）화4．40％（ P＜0．05）。2）시험Ⅱ조각유성분함량급유밀도도현저고우대조조（ P＜0．05），시험Ⅱ조적유단백、유지방화유당함량분별비시험Ⅰ조고출3．11％（P＜0．05）、6．71％（P＜0．05）화2．92％（P＜0．05）。3）시험Ⅱ조사량각양분적표관소화솔도현저고우대조조（ P＜0．05），시험Ⅰ조적간물질、조단백질화산성세조섬유적표관소화솔현저고우대조조（ P＜0．05）。종상，괄당수평적미생물발효사료능제고비유내우적산내량화사량각양분적표관소화솔、개선유품질。미생물발효사료체대2 kg원기출정료적효과우우체대1 kg원기출정료。
The objective of this paper was to investigate the effects of microbiology fermented feed on milk yield,milk quality and nutrient apparent digestibility of Holstein Friesian dairy cows. Two hundred and ten lac-tating dairy cows with similar milk yield and body condition were randomly divided into control group,groupⅠ and group Ⅱ,and seventy cows were in each group. Control group was fed with total mixed ration of the farm( basal diet),groupⅠand groupⅡwere fed with diets replaced 1 and 2 kg the concentrate in basal diet with equal quality of microbiology fermented feed,respectively. The feeding trial lasted for 10 pre-feeding days and 24 trial days. Milk yield,milk composition and apparent digestibility of nutrients were determined. The re-sults showed as follows:1)during of this trial,the milk yield in whole period of group Ⅰ( replaced 1 kg) and group Ⅱ( replaced 2 kg)were increased by 3.42%( P<0.05)and 4.40%( P<0.05)than that of control group,respectively. 2)Group Ⅱ had better milk composition and density than control group( P<0.05). Milk protein,milk fat and lactose contents of group Ⅱ were increased by 3.11%( P<0.05),6.71%( P<0.05)and 2.92%(P<0.05)compared with groupⅠ. 3)The nutrient apparent digestibility of groupⅡwas significantly higher than that of control group( P<0.05),and the apparent digestibility of dry matter,( crude protein and acid detergent fiber of group Ⅰ was higher than that of control group( P<0.05). In conclusion,the appropri-ate microbiology fermented feed level can enhance milk yield and nutrient apparent digestibility and improve milk quality. Replacing concentrate with 2 kg microbiology fermented feed in dairy cows is better than that with 1kg.