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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Replacement of Imported Timothy Hay with Domestic Italian Ryegrass Silage in a Horse Feedstuff

말에서 국내산 이탈리안 라이그라스 사일리지의 수입산 티모시 건초 대체 효과

  • Kim, Ji Yung (College of Animal Life Sciences, Kangwon National University) ;
  • Son, Jin (Korea Agency of HACCP Accreditation and Services) ;
  • Lee, Bae Hun (National Institute of Animal Science, RDA) ;
  • Kim, Byong Wan (College of Animal Life Sciences, Kangwon National University) ;
  • Sung, Kyung Il (College of Animal Life Sciences, Kangwon National University)
  • 김지융 (강원대학교, 동물생명과학대학) ;
  • 손진 (한국식품안전관리인증원) ;
  • 이배훈 (농촌진흥청, 국립축산과학원) ;
  • 김병완 (강원대학교, 동물생명과학대학) ;
  • 성경일 (강원대학교, 동물생명과학대학)
  • Received : 2020.03.03
  • Accepted : 2020.03.18
  • Published : 2020.03.31
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Abstract

This study was conducted to investigate the possibility of replacing imported Timothy hay (TH) with domestic Italian ryegrass silage (IRGS) as a horse feed considering feed quality, nutrient digestibility and feed price. Two experimental diets (TH and IRGS) were fed to six-headed Thoroughbred (body weight, 475.7±33.3kg) of the Korea Racing Authority of Wondang Stud Farm. The 3 head animals were assigned to Control group (TH) and Treatment group (IRGS), respectively. The nutrient digestibility was determined by the total collection method. IRGS is enough for using as a horse feed because its Relative feed value(RFV) was higher than TH and its fermentation quality is suitable for horses. Although no difference was observed in nutrient digestibility, Total digestible nutrients(TDN), and Digestible energy(DE) between Control and Treatment group (p>0.05), the fact that price of IRGS was much lower (53.7~62.4%) than that of TH indicates IRGS has competitive advantage over TH as a horse forage feed. The present study indicates that IRGS can be fully replaced with TH due to its superior economic value even though the similarity of its nutrient digestibility, TDN, and DE to TH.

본 연구는 수입산 티모시 건초(TH)를 국내산 이탈리안 라이그라스 사일리지(IRGS)로 대체할 목적으로, 말에서 급여사료 중 TH 대신 IRGS의 대체급여 가능성을 사료품질, 영양소소화율 및 사료가격 측면에서 검토하였다. 실험 처리는 공시동물에게 급여 사료 중 TH를 급여한 대조구와 TH대신 IRGS를 대체 급여한 처리구로 하였다. 소화실험은 한국마사회 원당종마목장의 더러브렛 6두(평균체중 475.7±33.3kg)로 대조구와 처리구에 각 3두를 배치하여 전분채취법으로 수행하였다. 사료성분과 상대적사료가치(RFV)는 IRGS가 TH보다 높았으며 IRGS의 발효품질도 양호하여 말의 풀사료로 충분히 이용할 수 있는 것으로 생각된다. 영양소소화율, 가소화에너지총량(TDN) 및 가소화에너지(DE)은 대조구와 처리구 간의 차이가 없어(p>0.05) TH를 IRGS로 대체 가능한 것으로 나타났다. 총급여사료 중 TH와 IRGS의 사료비는 IRGS가 TH 보다 53.7~62.4%로 현저히 절감되는 것으로 나타나 사료비 절감 측면에서도 IRGS가 유리하였다. 이상에서 IRGS는TH와 영양소소화율, TDN함량 및 DE에서 차이가 없고 사료성분, RFV 및 사료비 측면에서 유리하여 수입산 TH를 충분히 대체할 수 있을 것으로 판단된다.

Keywords

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