• Title/Summary/Keyword: 증체율

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특수사료제조의 필요성

  • 홍성택
    • KOREAN POULTRY JOURNAL
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    • s.108
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    • pp.60-63
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    • 1978
  • 우리나라와 같이 대부분의 원료를 수입에 의존하고 강피류의 사용비중이 높은 여건에서 펠렛이나 후레이크 사료에 대한 필요성은 절실하다. 사료효율 5$\%$, 증체율 6$\%$ 개선이라는 수치는 경제적으로 매우 중요한 의미를 갖기 때문에 사료수급정책 차원에서 다루어져야 하겠다.

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Effects of Obosan Supplemented Diet on Growth, Feed Conversion Ratio and Body Composition of Nile Tilapia, Oreochromis niloticus (한방사료 첨가제인 어보산이 나일틸라피아, Oreochromis niloticus 의 성장, 사료 계수 및 체조성에 미치는 효과)

  • 김동수;노충환;정성욱;조재윤
    • Journal of Aquaculture
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    • v.11 no.1
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    • pp.83-90
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    • 1998
  • The effects of Obosan in the diet on growth, percent weight gain, specific growth rate, feed conversion ration and body composition of nile tilpia were investigated. First feeding fry average weighing 11.0 mg were fed the diets containing 0%, 0.25%, 0.5%, 1.0% and 2.0% Obosan for 7 weeks. Body weight, percent weight gain, specific growith rate of fish fed the diets containing 0.25%, 0.5% and 1.0% Obosan were significantly higher than control diet (P<0.05). Feed conversion ratio of fish fed the diets containing 0.25% and 0.5% Obosan showed best results compare to other experimental groups (P<0.05). Juvenile average weighing 281.0g and adult fish average weighing 563.0g were fed control and 0.3% Obosan supplemented diet for 30 days and 175 days, respectively. Body weight, percent weight gain and specific growth rate were significantly higher in the fish fed Obosan supplemented diet than control diet (P<0.05). Crude protein, crude lipid, crude ash and moisture of dorsal muscle and liver were not significantly different between two experimental groups.

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Evaluation on Ruminant Feed Value of Cage Broiler Excreta Processed by a Deepstacking Method (퇴적발효한 케이지 육계생분의 반추동물 사료적 가치 평가)

  • 곽완섭;박종문;김연호;강준석;김영일;김원경
    • Journal of Animal Environmental Science
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    • v.9 no.2
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    • pp.113-122
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    • 2003
  • This on­farm study was conducted to evaluate the effect of feeding deepstacked broiler excreta­saw dust­rice hulls(DBSR) pellets on feed intake, production and economy of growing Hanwoo steers and Holstein bulls. Formulated mix and rice straw were replaced at 16% and 48% levels for growing Hanwoo steers(6 wk of feeding period) and at 4% and 18% levels for Holstein bulls(12 wk) with DBSR pellets. Control and treated diets were formulated to be isoenergetic and DBSR pellets were fed ad libitum. Palatability of DBSR pellets turned out to be favorable. Compared with the control group, feeding DBSR pellets did not affect body weight gain, average daily gain and feed efficiency(P>0.05). Feed cost per gain was reduced by 18.5% for Hanwoo steers and 3.5% for Holstein bulls. Feeding DBSR pellets to Holstein bulls did not affect carcass weight and grades of meat yield and quality. These results indicate that deepstacked cage broiler excreta mixture may be effectively used as a feed ingredient for growing ruminants.

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Feeding rate, excreting rate and biomass increasing rate of earthworm (Eisenia fetida) fed with paper mill sludge and cow dung manure (제지슬러지 및 우분 급이시 줄지렁이(Eisenia fetida)의 섭식률, 배설률 및 증체율)

  • Bae, Yoon-Hwan;Park, Kwang-Il
    • Journal of the Korea Organic Resources Recycling Association
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    • v.14 no.3
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    • pp.101-109
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    • 2006
  • Earthworms(Eisenia fetida) were fed with paper mill sludge produced from P&G or Yuhan Kimberly paper manufacturing factory, or cow dung manure. Turnover rate of feed into earthworm biomass and excreting rate on each feed were investigated on dry weight base. Biomass of earthworm population was increased on paper mill sludge, but it was fallen to death on cow dung manure, which had high electrical conductivity and low redox potential. When P&G paper mill sludge was supplied to adult, elder juvenile or younger juvenile for 84 days, turnover rate of feed into earthworm biomass was 0.48, 0.40 and 0.76%, respectively, and on Yuhan Kimberly paper mill sludge 0.26, 0.45, 0.42%. When P&G paper mill sludge was supplied to adult, elder juvenile or younger juvenile, excreting rate was 49.02, 54.32 and 55.39%, respectively and on Yuhan Kimberly paper mill sludge 32.22, 41.86, 40.69%, and on cow dung manure, 73.73, 57.89. 76.38%.

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Heat Stress를 잡아라!

  • 최희철
    • Feed Journal
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    • v.3 no.6 s.22
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    • pp.60-67
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    • 2005
  • 가축이 더위에 노출이 되면 고온스트레스의 피해를 입게 되어 번식우는 발정이 잘 오지 않거나 수태율이 현저히 낮아지게 되고, 비육우의 경우는 증체율 및 육질이 떨어지게 되며, 젖소는 산유량 및 수태율 저하 등이 수반된다. 기상자료에 의하면 수원을 기준으로 할 때 가축의 생산성에 영향을 받기 시작하는 온도인 26$^{\circ}C$ 이상되는 일수가 90일로서 일년 중 무려 1/4이 고온스트레스를 받는다고 할 수 있다. 가축이 더위에 노출이 되면 고온 스트레스의 피해를 입게 되어 번식우는 발정이 잘 오지 않거나 수태율이 현저히 낮아지게 되고, 비육우의 경우는 증체율이 떨어지며, 젖소의 경우 산유량이 감소하게 된다.

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Nutritional value of black soldier fly, Hermetia illucens (Diptera: Stratiomyidae) as a feed supplement for fish (물고기 사료로서 동애등에의 영양학적 가치)

  • Park, Kwanho;Choi, Youngcheol;Nam, Sunghee;Kim, Sunghyun;Kim, Sinyoung;Ma, Youngjoo;No, Sikab
    • Journal of Sericultural and Entomological Science
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    • v.51 no.2
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    • pp.95-98
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    • 2013
  • The experiment was conducted to determine the value of black soldier fly (Hermetia illucens) larvae and pupae as feed supplements for fresh-water fish (Carassius auratus). Black soldier fly larvae grown on food waste were fed to fresh-water fish, live larvae alone, dried larvae, dried pupae and combination with commercial fish diet. A 16-week feed trial was conducted to determine whether black soldier fly larvae could be used as a feed supplement in fresh-water fish. The growth performance indicated that fish fed the live larvae ranked consistently higher, and in combination with commercial fish diet and dried larvae and pupae were next higher. The finding of this study suggest that black soldier fly larvae and pupae may be valuable feedstuff in commercial fish production.