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국내산 이탈리안 라이그라스 사일리지와 열풍 건초 위주의 TMR 급여가 홀스타인 착유우의 반추 활동량, 우유 생산성 및 경제성 분석에 미치는 영향 KCI 등재
Effects of TMR Feeding Using Italian Ryegrass Silage and Hay of Those Dried by Hot-Air Dry System on Rumination Activity, Milk Productivity and Economic Feasibility in Holstein Dairy Cows
pp.106-112
The objective of this study was to compare the feeding effects of imported timothy hay, domestic Italian ryegrass silage (IRGS) and IRG dried by hot-air dry system (IRGHDS) under basic total mixed ration (bTMR) on rumination activity, milk production, and milk composition in lactating dairy cows. Eighteen Holstein dairy cows were divided into three groups: control (bTMR + imported timothy hay), treatment 1 (bTMR + IRGS) and treatment 2 (TMR + IRGHDS) groups. The study was conducted over a total period of 24 days, including a 10 days adaptation period and a 14 days main experimental period. The results indicate body weight was not significantly different between the three groups (p>0.05), and rumination time was significantly higher in the treatment 1 group compared with the control group (p<0.001). Milk fat, protein, and lactose were not significantly different between the three groups (p>0.05), however, somatic cell counts were significantly lower in the treatment 1 group compared with the control group (p<0.001). As a result of the economic feasibility analysis, it is expected that feeding TMR using IRGS and IRGHDS will increase profit by 402.8 won/day and 331.4 won/day per cow compared to imported timothy hay. Therefore, IRGS and IRGHDS can be used as substitutes for imported timothy hay in feeding lactating dairy cows.
Ⅱ. 재료 및 방법
1. 시험조건 및 공시동물
2. 사료 섭취량, 유량, 및 시료의 성분 분석
3. 반추시간, 활동량 및 반추위 온도 분석
4. 경제성 분석
5. 통계분석
Ⅲ. 결과 및 고찰
1. 사료 섭취량, 체중 및 반추 활동
2. 우유생산량, 유성분, 사료효율 및 경제성 분석
Ⅳ. 요약
Ⅴ. 사사
Ⅵ. REFERENCES
