Asian-Australasian Journal of Animal Sciences
- 제13권2호
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- Pages.188-191
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- 2000
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- 1011-2367(pISSN)
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- 1976-5517(eISSN)
DOI QR Code
Separation of Ether-Soluble Neutral Extract of a Commercial High-Grain Feed Stimulating Hay Intake in Cattle
- Shahjalal, M. (Department of Animal Nutrition, Bangladesh Agriculture University) ;
- Dohi, H. (Department of Animal Production, Chugoku National Agricultural Experiment Station) ;
- Kosako, T. (Department of Animal Production, Chugoku National Agricultural Experiment Station) ;
- Hayashi, Y. (Department of Animal Nutrition, Bangladesh Agriculture University)
- 투고 : 1999.04.14
- 심사 : 1999.06.02
- 발행 : 2000.02.01
초록
Appetite stimulant ether-soluble neutral extract of a high-grain compound feed was separated into four fractions with an open column of silica gel chromatograph using four carrier solutions containing n-pentane and diethyl ether as 100:0 (Fraction A), 90:10 (Fraction B), 75:25 (Fraction C) and 0:100 (Fraction D). The stimulative effects of the fractions were examined by comparing the intake of hay (with or without the fractions) in two-choice test bioassays with cattle. The Fractions A, B and C of the neutral extract stimulated (p<0.05) hay consumption in cattle, whereas Fraction D had no effect on selective feeding when compared with the control fraction. Furthermore, Fractions A, B and C had higher (p<0.05) feeding stimulative indices (FSI) than that of the Fraction D. The results suggest that chemical stimulants to increase palatability of hay are present in the neutral Fractions A, B and C of high-grain concentrate.