• Title/Summary/Keyword: 대학 사료

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Effects of Feeding Concentrate on Development of Intestinal Tract and Composition of Muscle in Hanwoo Calves before Weaning (이유 전 농후사료(무조사료) 급여가 한우 송아지의 장관발달 및 근육 성분에 미치는 영향)

  • Kim, W.Y.;Lee, S.H.;Kim, S.K.;Lee, J.H.;Nho, W.G.;Hwang, J.H.;Lee, S.S.;Yeo, J.M.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.15 no.1
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    • pp.123-130
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    • 2013

  • The present study was conducted to investigate effects of feeding concentrate on development of intestinal tract and composition of muscle in suckling Hanwoo calves before weaning(60 days of age). Twenty-four Hanwoo calves(12 heifers and 12 bulls) at six days of age were randomly assigned to one of three dietary treatments[hay and two levels(low and high) of concentrate feeding] and given each diet with free access to their dams for suckling until 60 days of age. At 60 days of age, two calves from each treatment were used for post-mortem examination of intestine development and chemical analysis of muscle. Feed intake between 31 and 60 days of age was significantly(P<0.05) higher for the high concentrate treatment(532.4g/d) than for other treatments(78.9 and 108.9g/d for hay and low concentrate treatments, respectively). Although feed intake showed a large difference between the low and high concentrate treatments, body weights at birth and 60 days of age were similar between the treatments, suggesting that calves in the low concentrate feeding were supplied more milk from their dams than those in the high concentrate feeding. The ratio of intestine weight to body weight at 60 days of age was increased in the high concentrate(3.35%), compared with those in the hay(2.93%) and low concentrate(3.03%) treatments. The chemical composition of muscle in sirloin and hind leg was not affected by the treatments. In conclusions, the results of the present study showed that feeding concentrate to Hanwoo calves before weaning might stimulate intestine development relative to feeding hay.

  • https://doi.org/10.23097/JPAF:2013.15(1).123 인용 PDF

Effect of Dietary Energy Levels and Bedding Materials on Performance, Meat Quality and Foot Pad Score of Male and Female Slow-Growing Korean Meat-Type Chicken (Hanhyop 3) (사료 에너지 수준과 깔짚 종류가 한협 3호 육계의 암·수별 성장, 육질, Foot Pad Score에 미치는 영향)

  • Lee, Jun Yeop;Lee, Myung Ho;Song, Yong Han;Lee, Jong In;Ohh, Sang Jip
    • Korean Journal of Poultry Science
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    • v.45 no.4
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    • pp.273-283
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    • 2018

  • Two diet energy levels (high or low) and two bedding material (rice husk or saw dust) treatments were designed for either male or female slow-growing Korean meat-type chicken (Hanhyop 3) to make totally eight treatments for 11~75 d feeding trial. Body weight gain (BWG) were influenced by energy levels, sex of bird and bedding material type. There were interaction effect among those three factors. Feed intakes (FI) by male bird during each and overall periods were higher than those by female. Diet energy levels and bedding material affected the FI only during final 56~75 d period, of which FI of high energy diet was higher in male whereas that of low energy diet was higher in female. Although feed conversion ratio (FCR) was improved by high energy diet, the better FCR has dissipated during 41~75 d, when the most of overall BWG were achieved. Apparent total tract retention (ATTR) of nutrients were higher in male than those in female birds with exception on fat ATTR. Fat ATTR was improved when fed low energy diet regardless of the sex of birds. Both energy levels and sex of bird influenced the color of breast. Thiobarbituric acid reactive substances (TBARS) value of female thigh was higher than that of male. Levels of moisture and P in female thigh were lower although level of fat in female breast was higher than those in male, respectively. This study showed that diet energy levels for Hanhyop 3 chicken, especially during 41~75 d, should be differently formulated between male and female bird.

  • https://doi.org/10.5536/KJPS.2018.45.4.273 인용 PDF KSCI

1983년도 미국의 농업생산과 사료곡물 전망

  • 이유방
    • KOREAN POULTRY JOURNAL
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    • s.159
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    • pp.48-52
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    • 1983

  • 본 원고는 전 한국과학기술연구소 축산가공연구실장을 지낸 바 있는 미국 캘리포니아대학의 이유방 박사가 본지 독자와 국내 양계인들을 위해 특별히 기고한 원고로 우리나라 축산업과 불가분의 관계에 있는 사료곡물현황과 미국의 농업생산에 대해 언급한 것으로 83/84 회기년도 사료곡물가격과 국내 사료가격 전망에 대해 논하고 있다.

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