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Effect of Replacing Corn Silage with Whole Crop Rice Silage in Total Mixed Ration on Intake, Milk Yield and Its Composition in Holsteins

  • Ki, K.S. (National Institute of Animal Science) ;
  • Khan, M.A. (National Institute of Animal Science) ;
  • Lee, W.S. (National Institute of Animal Science) ;
  • Lee, H.J. (National Institute of Animal Science) ;
  • Kim, S.B. (National Institute of Animal Science) ;
  • Yang, S.H. (National Institute of Animal Science) ;
  • Baek, K.S. (National Institute of Animal Science) ;
  • Kim, J.G. (National Institute of Animal Science) ;
  • Kim, H.S. (National Institute of Animal Science)
  • 투고 : 2008.09.26
  • 심사 : 2009.01.07
  • 발행 : 2009.04.01

초록

This study was conducted to investigate the effects of replacing whole crop corn silage (WCCS) with whole crop rice silage (WCRS) in the total mixed ration (TMR) on nutrient intake, milk yield and its composition in Holstein cows. The Chucheong rice variety (Oryza sativa L. Japonica) and corn (Pioneer 32 P75) were harvested at yellow-ripe stage and were ensiled in round bales and in trench silos, respectively. Two TMR containing either WCCS or WCRS were prepared. These diets were randomly assigned to 16 midlactating Holstein cows (8 cows per treatment) and were fed for 120 days. The first 20 days were used for dietary adaptation and for the next 100 days daily feed intake, milk yield and its composition were recorded. The pH, lactic acid, NDF, ADF, CP, Ca and P contents were similar in WCRS and WCCS. The DM, ash and EE contents of WCRS were greater compared with WCCS. Nutrient (DM, NDF, TDN and CP) intakes were similar in cows fed WCCS- and WCRS-based TMR. Daily and 4% fat corrected milk yield were not affected by the treatments. Milk composition (percent milk fat, protein, lactose and total solids) was similar in cows fed either WCCS- or WCRSbased TMR. The concentration of milk urea N was greater in cows fed WCRS-based TMR than those fed WCCS-based TMR. In conclusion, round-baled WCRS can replace WCCS in the diet of mid- to late-lactating Holsteins without any deleterious effects on feed consumption, milk yield and its composition. The present findings raise the possibility that WCRS can be used as an alternative roughage source in the diets of dairy cows in countries with surplus rice production.

키워드

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  7. Productivity and quality of whole crop rice varieties in relation to plant components vol.66, pp.1, 2009, https://doi.org/10.1111/grs.12255
  8. Quantitative Determination of Phenolic Acids and Flavonoids in Fresh Whole Crop Rice, Silage, and Hay at Different Harvest Periods vol.10, pp.22, 2020, https://doi.org/10.3390/app10227981
  9. Including ramie (Boehmeria nivea L. Gaud) in the diet of dairy cows: effects on production performance, milk composition, rumen fermentation, and nutrient digestion vol.19, pp.1, 2009, https://doi.org/10.1080/1828051x.2020.1726831