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Effect of Different Growing Stages of Winter Cereal Crops on the Quality of Silage Materials and Silages

맥류의 수확시기가 사일리지의 재료적 특성 및 품질에 미치는 영향

  • Heo, J.M. (Division of Animal Science and Resources) ;
  • Lee, S.K. (Division of Animal Science and Resources) ;
  • Lee, I.D. (Division of Animal Science and Resources) ;
  • Lee, B.D. (Division of Animal Science and Resources) ;
  • Bae, H.C. (Division of Animal Science and Resources)
  • 허정민 (충남대학교 동물자원과학부) ;
  • 이수기 (충남대학교 동물자원과학부) ;
  • 이인덕 (충남대학교 동물자원과학부) ;
  • 이봉덕 (충남대학교 동물자원과학부) ;
  • 배형철 (충남대학교 동물자원과학부)
  • Published : 2005.10.31

Abstract

This study was carried out to determine the effect of different growing stages of winter cereal crops on the quality of silage materials and silages. Silages were made from the silage materials harvested at four growing stages(boot, heading, flowering, and yellow ripe) of barley, rye, oat, and wheat. Approximately 1 kg of silage materials harvested from each growing stage stored in vinyl bags with vacuum packing method and fermented at room temperature for 40 days. As the growing stages progressed, the moisture and crude protein contents of the silage materials decreased, and fiber contents(NDF, ADF and hemicellulose) increased. All the silage materials showed significantly higher contents of water soluble carbohydrate in the boot stages than in the flowering and yellow ripe stages. There was no tendency in acetic acid contents of silage materials cut at different growing stages. The overall pH of silage materials were in the range of 5.91-6.01, and there was no significant difference among growing stages. Buffering capacity of silage materials were in the range of 26.23-29.47meq/100g DM, and showed a tendency to decline as the growing stages proceeded. The moisture and crude protein contents of silages decreased significantly in all species as the growing stages proceeded, and the fiber contents vice versa. As the growing stages proceeded, the pH of the silages tended to increase, and the acetic, butyric, and lactic acid contents tended to decrease. The buffering capacity of silages had a tendency to decrease as the growing stages of winter cereal crops proceeded. Therefore, these features described above should be taken into consideration in order to make silages from winter crops economically.

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