한국초지조사료학회지 (Journal of The Korean Society of Grassland and Forage Science)

  • 제44권2호
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  • Pages.106-112
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  • 2024
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  • 2287-5824(pISSN)
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  • 2287-5832(eISSN)
한국초지조사료학회 (The Korean Society of Grassland and Forage Science)
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국내산 이탈리안 라이그라스 사일리지와 열풍 건초 위주의 TMR 급여가 홀스타인 착유우의 반추 활동량, 우유 생산성 및 경제성 분석에 미치는 영향

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

  • 엄준식 (농촌진흥청 국립축산과학원 낙농과) ;
  • 박성민 (농촌진흥청 국립축산과학원 낙농과) ;
  • 박지후 (농촌진흥청 국립축산과학원 낙농과) ;
  • 김동현 (농촌진흥청 국립축산과학원 낙농과) ;
  • 김상범 (농촌진흥청 국립축산과학원 낙농과) ;
  • 임동현 (농촌진흥청 국립축산과학원 낙농과)
  • Jun Sik Eom (Dairy Science Division, National Institute of Animal Science, RDA) ;
  • Seong Min Park (Dairy Science Division, National Institute of Animal Science, RDA) ;
  • Ji Hoo Park (Dairy Science Division, National Institute of Animal Science, RDA) ;
  • Dong Hyeon Kim (Dairy Science Division, National Institute of Animal Science, RDA) ;
  • Sang Bum Kim (Dairy Science Division, National Institute of Animal Science, RDA) ;
  • Dong Hyun Lim (Dairy Science Division, National Institute of Animal Science, RDA)
  • 투고 : 2024.06.17
  • 심사 : 2024.06.26
  • 발행 : 2024.06.30
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초록

본 연구는 수입산 티모시 건초, 국내산 IRG 사일리지 및 열풍 건초 IRG를 이용한 TMR의 혼합 급여가 착유우의 유 생산량, 유질, 반추 활동 및 조사료 별 경제성 비교 분석 등을 통해 국내산 IRG 사일리지와 열풍 건초 국내산 IRG의 사료가치 평가를 수행하였다. 체중은 차이를 보이지 않았으며, 반추위 활동 시간과 온도는 정상범위로 확인되었다. 우유 내 지방, 단백질 및 유당은 차이를 보이지 않았으며, 체세포수는 1등급의 범위를 보였다. 경제성 분석 결과, 수입산 티모시에 비해 국내산 IRG 사일리지와 열풍 건초 IRG를 이용한 TMR 급여에서 두당 402.8원/일과 331.4원/일의 수익이 증가할 것으로 생각된다. 그러므로 국내산 IRG 사일리지와 열풍 건초 국내산 IRG는 수입산 티모시 건초를 대체하여 착유우에 이용될 수 있을 것으로 사료된다.

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.

키워드

과제정보

본 연구는 농촌진흥청 연구사업(젖소 조사료 위주 사양에 따른 우유 품질 변화 및 반추위 환경 연구, PJ01489601)과 2024년도 농촌진흥청 국립축산과학원 전문연구원 과정 지원사업에 의해 이루어진 것임.

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