• Title/Summary/Keyword: CJ feed

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Evaluation of Efficacy of Bacteriophage CJø07 against Salmonella enteritidis Infection in the SPF Chicks (박테리오파아지 CJø07의 Salmonella enteritidis 감염에 대한 SPF 병아리에서의 효능 평가)

  • Lim, Tae-Hyun;Lee, Hyun-Jeong;Kim, Myeong-Seob;Kim, Byoung-Yoon;Yang, Si-Yong;Song, Chang-Seon
    • Korean Journal of Poultry Science
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    • v.37 no.3
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    • pp.283-287
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    • 2010

  • In the present study we report in vivo inhibitory potential of single strain of bacteriophage ($CJ{\phi}07$) in day-old SPF chicks experimentally infected with Salmonella enteritidis (SE). The bacteriophages prepared by feed additives and drinking water were given to chicks for 20 days starting prior 10 days before challenge with SE. Chicks were euthanized at 10 days after challenge for quantitative salmonella isolation from intestine and determination of environmental contamination level of salmonella. Bacteriophage therapy as additives in feed and drinking water resulted in significant inhibition of the SE replication in intestines of SPF chickens (P<0.05). In addition, environmental contamination by SE fecal shedding was decreased in bacteriophage-treated birds. Therefore, bacteriophage $CJ{\phi}07$ examined in this study may be a plausible alternative to antibiotics for the reduction of salmonella infection both in poultry.

  • https://doi.org/10.5536/KJPS.2010.37.3.283 인용 PDF KSCI

Effects of Dietary Supplementation with Bacillus sp. on Growth Performance, Feed Utilization, Innate Immunity and Disease Resistance against Streptococcus iniae in Olive Flounder Paralichthys olivaceus (사료 내 Bacillus 균주의 첨가가 넙치(Paralichthys olivaceus) 치어의 성장, 사료효율, 선천성면역 및 연쇄구균 질병저항성에 미치는 영향)

  • Cha, Ji-Hoon;Yang, Si-Yong;Woo, Seo-Hyung;Song, Jin-Woo;Oh, Dae-Han;Lee, Kyeong-Jun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.45 no.1
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    • pp.35-42
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    • 2012

  • We investigated the effect of dietary supplementation with probiotics on growth performance, feed utilization, innate immunity and disease resistance against Streptococcus iniae in juvenile olive flounder Paralichthys olivaceus. Four experimental diets were made by supplementation with three Bacillus sp. probiotics (B. subtilis, B. pumilus and B. licheniformis) into a basal diet (control) at 0.5% each. Three-hundred fish (average BW, 20 g) were randomly distributed (25 per tank) into twelve 150 L capacity polyvinyl circular tanks with three replicates per dietary treatment. Triplicate groups of fish were fed the experimental diets to apparent satiation (twice per day, 09:00 and 17:00 h) for nine weeks. After the feeding trial, a challenge test was directly conducted against S. iniae. The results indicated that dietary supplementation with the probiotic, Bacillus sp, seemed to improve growth performance of olive flounder. Hematological parameters and innate immunity as determined by nitroblue tetrazolium, myeloperoxidase or superoxide dismutase activities were not significantly affected by the probiotic supplementation. The result from the challenge test suggested that dietary supplementation with probiotics Bacillus sp. can improve the disease resistance of olive flounder against S. iniae.

  • https://doi.org/10.5657/KFAS.2012.0035 인용 PDF KSCI

Effects of zinc, vitamin and selenium additives for improving meat quality on the growth performance, carcass characteristics and economic efficiency of holstein steers (아연, 비타민과 셀레늄의 첨가가 홀스타인 거세우의 발육, 도체특성 및 경제성에 미치는 영향)

  • Cho, Won Mo;Lee, Sang Min
    • Korean Journal of Agricultural Science
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    • v.42 no.3
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    • pp.253-259
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    • 2015

  • This study was conducted to investigate the effect of different additives on the growth performance, feed efficiency and carcass characteristics in Holstein steers during 18month fattening periods. Twenty four Holstein steers, 5months of age and 176.6kg, were randomly allocated to 3 experimental groups 8 animals each for 18-months feeding trial. The groups were control (not additive), T1 (fed zinc, Vitamin C) and T2 (fed zinc, Vitamin C, Vitamin B6 and Selenium). According to feeding additives, final weight was not significantly different among the treatment groups, tended to be high at T2 group (827kg) compared to the other groups. Average daily gain was not different among the treatment groups during the experimental periods, but T2 group was significantly greater than T1 group in growing stage (p<0.05). The feed additives had no effects on DMI during experimental periods. Feed conversion ratio of T1 group in growing stage was significantly higher than those of other groups (p<0.05), average feed conversion ratio was tend to be decreased at T2 group rather compared with other groups. In the results of yield traits, carcass weight were relatively higher in T2 group than other groups (p<0.05). Rib-eye area, back fat thickness and yield index were similar between groups. In quality traits, marbling, meat color, fat color, texture and maturity were not significantly different among the groups. In economic efficiency, income was highest at T2 group as 91~393 thousand won among 3 groups.

  • https://doi.org/10.7744/cnujas.2015.42.3.253 인용 PDF KSCI