• 사료
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• s.12
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• pp.17-19
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• 2005

• Korean Journal of Poultry Science
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• v.29 no.2
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• pp.101-108
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• 2002

An experiment was conducted to compare the influences of artificial zeolite(AZ) produced from fly ash and natural zeolite(NZ), those were supplemented into broiler diets, on performances, intestinal microbes and some blood chemistry for 5 wks. The experimental diets contained 21.5 and 19% CP fur starting and finishing period, respectively. The ME was 3,100 kcal/kg of feed in both starter and finisher diets. Three hundred twenty chicks were assigned to 5 treatments with 4 replicates and fed one of five experimental diets containing different levels of AZ or NZ ; 0% zeolite, 1.5% AZ, 3.0% AZ, 1.5% NZ, and 3.0% NZ. Weight gain, feed intake and feed conversion were measured with weekly basis. Blood cholesterol and intestinal microflora were analyzed at the end of the experiment. Weight gain of chicks fed with NZ tended to increase, but was not statistically different from other diet groups. However, the birds of fed with 3.0% AZ showed significant decrement of weight gain compared to that of control(P<0.05). No significant difference in feed intake was found among five treatment. Feed conversion was significantly improved in 3.0% NZ treatment relative to that of 3.0% AZ(P<0.05). There were no consistent differences in intestinal microbes between the control and zeolite groups. Blood cholesterol was significantly lower in 3.0% NZ treatments than the others(P<0.05). These results suggest that AZ can be added to broiler feeds less than 1.5% without any detrimental effects on chick performances.

• Journal of Animal Environmental Science
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• v.10 no.1
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• pp.59-66
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• 2004

This study was conducted for a period for 5 weeks in order to evaluate effects of brewer's yeast slurry(BYS) on the growth performance, organ development and blood composition of broiler chicks. A total number of 84 one day old broiler chicks were allocated to one of three supplemented diets: 0%(control), 2% and 4% BYS. Body weight gain and feed efficiency of chicks fed the diet supplemented with 4% BYS significantly was increased by 9% and 8%, respectively, compared to the control diet(P<0.05). The BYS supplements did not affect weights of liver, heart and abdominal fat, and their ratios per body weight. However, in 4% BYS supplement group, ratio of liver to body weight significantly decreased(P<0.05) by 12%, compared to the control. The supplement of 4% BYS decreased the concentration of triglyceride by 31%, and increased the concentration of high density lipoprotein(HDL) by 26%, compared to the control(P<0.05). These results indicated that the supplementation of 4% BYS in diet can improve body weight gain as well as feed efficiency, and increased the concentration of blood HDL, and ratio of HDL to total-cholesterol of broiler chicks.

• Proceedings of the Korea Society of Poultry Science Conference
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• 2004.11a
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• pp.28-30
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• 2004

Effect of dietary brown seaweed (Undaria pinnatifida) levels on the performance, nutrients utilization, and blood anti-oxidant system was studied in broiler chicks activated innate immune response. Brown seaweed 2.0 % diet improved performance of broiler chicks and resulted in enhanced feed efficiency due to the increased NB and decreased UAN excretion significantly (P<0.05). Dietary brown seaweed reduced SOD activity in erythrocyte cytosol and enhanced peroxidase activity in plasma significantly(P<0.05). Activation of innate immune response increased SOD activity and peroxide levels in blood. The results indicated that dietary brown seaweed affected SOD and peroxidase activity and the increased performance in birds fed brown seaweed 2.0 % diet related with decreased decomposition of body protein and the change of anti-oxidant systems in blood of broiler chicks during activation of innate immune response.

• Journal of Animal Science and Technology
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• v.49 no.5
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• pp.599-610
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• 2007

Effect of dietary krill meal levels on the cellular immunity was studied in broiler chicks activated immune response. One day old male broiler chicks(Ross) were fed the experimental krill meal 0.0(basal), 0.5, 1.0 and 2.0% diets for 3wks. Blood TNF-α activity, ovotransferrin level and Con A induced proliferation of PBMC and splenocytes after 24 hr(21 d age) of the croton oil 10㎕ injection intra- musculary at the age of 20 days compared to the control olive oil. Krill meal diets did not affect growth performance of broiler chicks and plasma ovotransferrin levels but decreased significantly(p<0.0001) TNF-α like activity and proliferation of PBMC relative to krill meal 0.0% diet. And the proliferation of splenocytes were significantly(p<0.05) increased in birds fed krill meal 1.0% diet relative to krill meal 0.5 and 2.0% diets. The croton oil injection induced a significant(p<0.0001) increases in the TNF-α activity or the PBMC proliferation and enhanced circulating ovotransferrin levels relative to the olive oil. In birds injected with the croton oil the proliferation of PBMC was reduced linearly with the increase of dietary krill meal levels, and the proliferation of splenocytes was decreased in the krill meal 1.0 and 2.0% diets relative to olive oil. These results indicated that dietary krill meal changed the innate and cellular immunity in broiler chicks activated by the injection of croton oil.

• Korean Journal of Poultry Science
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• v.45 no.2
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• pp.81-88
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• 2018

The present study investigated effect of supplementation of agricultural byproduct on growth performance and blood parameters of broiler chicken using meta-analysis. Total 11 studies (32 experiments) where broiler feeding trials with agricultural byproducts were included were employed in analysis. All studies were conducted at commercial farm placed in South Korea and under commercial feeding programs. Growth phases were divided into two groups based on slaughter day. For growth performance, body weight, body weight gain, feed intake and feed conversion rate (feed/gain) were investigated. Carcass weight, dressing percentage, liver and spleen weight, blood glucose, total cholesterol and triglyceride, HDL (High density lipoprotein) and LDL (Low density lipoprotein) cholesterol contents in blood were investigated. Body weight of broiler of treatment was significantly increased than the control (P<0.05), regardless of growth phase. However, body weight gain during late growth phase did not show significant difference between control and treatment. Effect evaluated by random effect model on feed intake was not significant. Effect on feed conversion rate during early growth phase was significantly negative (P<0.05). Effects on carcass weight, dressing percentage, liver and spleen weight were not significant in random effect model. Effect on abdominal fat was significantly negative (P<0.05). In blood parameters, significant effects were found at total cholesterol, triglyceride and HDL cholesterol (P<0.05). Effect on HDL cholesterol only was positive effect, and others were negative.

• Monthly Korean Chicken
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• v.2 no.7 s.13
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• pp.2-8
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• 1996

육류중 유해물질 검사 강화 - 육계 초기 사료제한 연구 - 잔류 항생제 정성검사 키트 개발 - 일본인 육류섭취량 증가추세 - 축산폐수 단속기중 강화 - 축산물 소비촉진 홍보대책 필요 - 사료용 부연료 할당관세 $2.5{\%}$적용 - 가금티푸스 예방약 개발 - 가금인플루엔자 방역대책 시급 - 종계 ND 발생지역 백신 프로그램 - 수입종란 외래질병 매개 가능성 - 안전축산물 생산운동연합회 발족 - 중국, 닭고기 산업 잠재력 무한 - 삼계탕 수출 급속 성장중 - 소비자 단체 임원 닭 생산현장 방문 - 산란노계 처리 계속 어려워 - 인도, 육계수입 규제완화 재검토 - 축산기자재 구입 외화자금 사용가능 - 미국, 도계전 급이중단 실험 - 러시아, 수입쿼터제 부과 - 호주, 브로일러 산업 지속적 성장 - 배합사료업체 사료원료 선물구매 기피

• Korean Journal of Poultry Science
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• v.13 no.1
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• pp.61-70
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• 1986

우리나라 육계산업은 1960년대 후반기에 외국에서 잘 개량된 전용육계종계를 도입하면서부터 급격히 성장하기 시작하여 비교적 짧은 기간에 육류의 중요생산업종으로 커다란 비중을 차지하게 되었다. 육계산업이 크게 신장함에 따라 관련산업인 종계사업, 부화사업, 사료공업도 크게 발전되는 계기가 되었으며 도계품 중심의 가공업도 발전하게 되었다. (중략)

• Monthly Korean Chicken
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• v.16 no.6
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• pp.122-123
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• 2010

사료가격 인상 등에 따라 소 돼지 닭 등 2009년 축산물의 생산비가 크게 증가한 것으로 나타났다. 지난 5월 27일 통계청이 발표한 '2009년 축산물 생산비 조사결과 에 따르먼 지난해 육계 생산비는 kg당 1,311원으로 2008년(1,097원)에 비해 19.5%(214원) 상승했다. 또한 산지가격 상승으로 육계의 마리당 소득은 413원으로 전년(440원) 대비 27원(6.1%) 감소했다.

• Proceedings of the Korea Society of Poultry Science Conference
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• 2004.11a
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• pp.31-32
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• 2004

In order to at day evaluate effect of dietary 2.0 % brown seaweed(Undaria pinnatifida) with bean extract on performance and nutrients utilization during acute phase response, one day-old broiler chicks were fed basal diet and diets substituted with 2.0 % brown seaweed and 2.0 % brown seaweed with bean extract instead of wheat bran in basal diet for 4weeks. Dietary 2.0 % brown seaweed with bean extract enhanced dietary ME value and protein accumulation due to the increased NB and decreased UAN excretion. increased feed intake during acute phase response and had the highest body weight among birds fed experimental diets. The resulted indicated that dietary 2.0 % brown seaweed with bean extract improved performance of broiler chicks due to the increased protein accumulation during acute phase response.