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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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The Effect of Rice Straw and Tall Fescue Hay for Holstein Dairy Heifers on Growth, Age at First Calving and Feed Cost

볏짚 및 톨페스큐 건초 급여가 홀스타인 육성기의 성장, 초산월령 및 사료비에 미치는 영향

  • Jin Su Ryu (Division of Applied Life Science, Gyeongsang National University) ;
  • Shin Ja Lee (University-Centered Labs, Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Hyun Jin Kim (Department of Africultural biotechnoloty College of Agricuture and Life Sciences, Seoul National University) ;
  • Sung Sill Lee (University-Centered Labs, Institute of Agriculture and Life Science, Gyeongsang National University)
  • 유진수 (경상국립대학교 응용생명과학부) ;
  • 이신자 (경상국립대학교 농업생명과학연구원(중점연구소)) ;
  • 김현진 (서울대학교 농업생명과학대학 농업생명과학부) ;
  • 이성실 (경상국립대학교 농업생명과학연구원(중점연구소))
  • Received : 2024.01.10
  • Accepted : 2024.03.20
  • Published : 2024.03.31
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Abstract

Given the recent increases in feed cost, the demand for rice straw has been increasing on dairy farms because it is cheaper than expensive imported forages. Therefore, it is necessary to study the effect of rice straw feeding on the growth and productivity of dairy heifers. This study compared how feeding tall fescue and rice straw affects the growth, age at first calving, and feed cost of heifers. we compared the growth, age at first calving, and feed cost for each group during the breeding period. Body height was higher in the tall fescue-fed group than in the rice straw-fed group (p<0.05). The length of the growing stage was significantly shorter in the tall fescue group than in the rice straw group (p<0.001) and the age at calving also showed a significant reduction in the tall fescue group compared to the rice straw group (p<0.001). However, the feed cost was lower in the rice straw group because of the difference in the unit price of forage (p<0.001). Based on these results, during the growing period, the rice straw group had delays in growth and the age at first calving compared to the tall fescue group, but also had reduced feed costs in the short term.

본 연구는 톨페스큐와 볏짚의 급여가 육성기 젖소 성장과 초산연령 및 사료 비용에 미치는 영향을 비교했다. 결과적으로 번식 기간 동안 볏짚 처리구는 톨페스큐 처리구에 비해 성장과 초산연령에서 지연이 있었지만, 단기적으로는 사료 비용이 감소하는 현상을 보였다. 하지만 단기적인 사료값 절감효과로 생각해서는 안되며, 초산 분만 이후 착유우의 생산성 및 경제성 등을 고려하여 판단해야 하며, 이에 대한 추가적인 조사와 연구가 꼭 필요할 것으로 생각된다. 마지막으로 수입산 톨페스큐를 대체할만한 볏짚을 제외한 국내산 조사료의 이용이 필요할 것으로 보여지며, 이를 위한 국내산 조사료의 품질 향상 및 생산 증대에 대한 연구가 이루어져야 할 것으로 생각된다.

Keywords

Acknowledgement

본 논문은 한국연구재단(NRF) NRF-2015R1A6A1A03031413의 지원을 받아 진행되었습니다.

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