• Korean Journal of Poultry Science
• /
• v.13 no.1
• /
• pp.49-55
• /
• 1986

In order to study the effects of probiotic and antibiotic on the performance of the chickens and the population of microfloras in the intestine, a feeding trial was conducted for a period of seven weeks. One hundred eighty hatched male chickens of layer attain were fed one of the following three experimental diets; nonmedicated control, antibiotic supplemented diet(virginiamycin 5 ppm) and probiotic supplemented diet. Birds fed probiotic supplemented diets were heavier and consumed more feed than those fed other diets but the differences were not statistically significant. Antibiotic supplemented group showed significantly (P〈0.01) better feed efficiency than other groups. Availabilities of dry matter, crude protein, crude fat, NFE, Ca and P were not significantly different between treatments but antibiotic supplemented group showed significantly(P〈0.05) lower availability of crude fiber than other groups. The weight of small intestine of the birds fed antibiotic supplemented diet was significantly (P〈0.05) lighter than those of other groups. The population of Bacillus subtilis and Lactobacilli in the intestinal content of the birds fed probiotic supplemented diet were significantly (P〈0.01) larger than those of other groups. On the other hand, the population of Coliforms in the probiotic group were significantly (P〈0.01) smaller than those in the nonmedicated control group.

• Proceedings of the Korean Institute of Resources Recycling Conference
• /
• 2001.05a
• /
• pp.507-510
• /
• 2001

본 연구에서는 음식물 찌꺼기를 원료로 생균 발효사료를 생산하기 위해 단시간 호기적 발효에 필요한 고온성 균주를 개발하고자 하였다. 폐기물 처리장이나 경작연수가 10년 이상 경과된 농경지 야산의 토양 등 유기물질이 많은 장소에서 채취한 토양은 종균원으로 이용하였다. 1차 Screening을 통해 재배지(B group), 폐기물 처리장(F group), 야산(W group)에서 채취한 토양과 시판 발효용 종균제로부터 고온성 세균들을 분리한 뒤 고온.호기적 속성 발 효에 적합한 균주를 가려내기 위해 발효실험을 통한 2차 screening을 실시하였다. 그 결과, 재배지 토양으로부터 Bl, B2, B3, B4, B6, 폐기물 처리장으로부터 Fl, F2, 야산으로부터 W1, W3, W4 등의 세균이 선발되었다. 이들 중 특히 B6는 발효개시 4시간만에 생균수가 1.3$\times$$10^{9}$m1에 이르러 높은 중식속도를 나타냈고, 8시간만에 최고치인 7.5$\times$$10^{9}$ml까지 증가하여 호기적 고온성 속성 발효에 적합한 균주로 사료되었다.

• Journal of the korean veterinary medical association
• /
• v.46 no.12
• /
• pp.1106-1117
• /
• 2010

과거 한국의 식품 오염원 중 법적인 규제 등을 통해 구체적인 통제가 이루어지지 못하고 있는 것이 축산물의 항생제로 알려져 항생제 오 남용으로 인한 내성균의 출현으로 비상이 걸렸던 적이 있었다. 요즘은 항생제를 지나치게 많이 사용해 가축이나 인체 내의 병원성 미생물들이 내성이 생겨 문제가 되고 있어 2011년 7월부터 가축용 사료에 항생제 첨가가 금지하게 된다. 한국은 항생제 내성률 1위로, 2000년 세계보건기구(WHO)에 따르면 대표적 항생제인 페니실린에 대한 폐렴구균의 내성률이 70%로 세계 1위이다. 어느 보고서에 따르면, 축산물 1톤을 생산하는 데 사용되는 항생제가 스웨덴이나 뉴질랜드, 덴마크 등 축산 선진국이 31~44g에 불과한데 비해 한국은 911g에 이른다. 투여 경로는 배합사료에 포함된 양이 54%, 농가의 임의 치료가 40%, 수의사 처방은 겨우 6% 순으로 나타났다. 그러나 OECD 회원국 중 수의사 처방 없이 항생제의 임의 투여를 허용하고 있는 나라는 한국뿐이다. 세계보건기구(WHO)에서는 가축사료에 항생제를 첨가하지 말 것을 권장하고 있으며, 유럽연합(EU)도 항생제는 반드시 수의사의 처방에 의해서만 사용토록 제한하고 있다. 최근 국립수의과학검역원에 의하면, 축산용 항생제 사용량이 2008년에 비해 18%, 2001년에 l해 무려 38%가 감소되었으며, 이중 닭은 20%, 소의 항생제 사용량은 36%가 감소하였다고 밝혔다. 사육 가축들의 항생제 오남용을 줄이기 위해서는 사료에 첨가하는 항생제나 성장호르몬, 비소 투여 등의 투여 대신에 미생물 생균사료나 녹차사료, 한약재사료 등의 천연면역물질을 함유한 사료를 먹여 스트레스를 덜 받고 면역력 증강에 좋은 사료를 먹여 키운 건강한 가축으로 생산한 육류는 맛도 특별히 좋다. 본 자료의 대부분은 금년부터 3년간 농촌진흥청 국립축산과학원과 중국청도농업대학과 "고품질 축산물생산을 위한 중약제를 이용한 질병방지체제 연구"라는 과제로 공동협력연구를 수행하게 됨에 따라 지난 11월 4일부터 10일까지 필자가 중국 청도농업대학을 방문하여 세미나시 발표한 자료임을 밝혀두며, 국내 수의학 연구에도 도움이 되고 저 소개한다.

• Proceedings of the Korean Society of Veterinary Service Conference
• /
• 2000.06a
• /
• pp.187.2-188
• /
• 2000

• Feed Journal
• /
• v.2 no.5
• /
• pp.132-137
• /
• 2004

• Korean Journal of Poultry Science
• /
• v.34 no.4
• /
• pp.319-327
• /
• 2007

This experiment was designed to evaluate effects of Dandelion (Taraxzcum coreanum) and Dandelion fermented probiotics medium on the growth performance and meat quality in broiler chicks. A total of 150 "Ross" broilers，1-day old, were assigned to 5 treatments in a completely randomized design. There were 5 replications per treatment and 6 broilers in each replication for 5 weeks. The dietary treatments included a control (Dandelion and Dandelion fermentation was not added), antibiotic (0.05 chlortetracycline was added), 1.0% Dandelion supplementation and 0.5 and 1.0% Dandelion fermented probiotics, respectively. There was no significant difference in final body weight, weight gain, feed intake, and feed conversion ratio of broilers fed diets containing antibiotics, 1.0% Dandelion supplementation and 0.5 and 1.0% Dandelion fermented probiotics. The total cholesterol, HDL and LDL in plasma and meat cholesterol content was not affected by 0.5 and 1.0% Dandelion fermented probiotics and 1.0% Dandelion supplementation (P>0.05). The oleic acid content was significantly increased in 0.5% Dandelion fermented probiotics compared to that of the control (P<0.05). As a result, Dandelion and Dandelion fermented probiotics result in the influence on decreasing cholesterol in blood, particularly when adding probiotics, oleic acid that is the important factor in taste testing of meat increases thus the quality and taste of the chicken meat could be improved with the effect.

• Food Science of Animal Resources
• /
• v.30 no.3
• /
• pp.504-511
• /
• 2010

This study was undertaken to investigate the effects of feeding complex probiotics (Lactobacillus casei, Bacillus subtilis, Saccharomyces cerevisiae, Aspergillus oryzae, Streptomyces griseus, $1.5{\times}10^{10}$ CFU/kg) and antibiotics (oxytetracycline (OTC), 110 ppm) on growth performance and meat quality characteristics of broiler chicks. In the experiment 1, 0.3% complex probiotics feeding level was chosen to be proper addition level due to better average daily gain (ADG), feed conversion (FC) and dressing percent (DP) results among 3 levels (0.1, 0.3 or 0.5%). In the experiment 2, 5 treatments (T1, no probiotics + no antibiotics; T2, probiotics 0.3% + no antibiotics; T3, probiotics 0.3% + antibiotics 50%; T4, probiotics 0.3% + antibiotics 100%; T5, no probiotics + antibiotics 100%) were investigated. In the growth performance of broilers, T5 (antibiotics 100% only) showed the highest (p<0.05) ADG and FC values while T1 (control) showed the worst growth performance. However, T3 (probiotics 0.3% + antibiotics 50%) showed higher ADG (p<0.05), FC (p<0.05) and DP (p>0.05) values compared to control. In the breast and leg meat quality, T3 showed similar pH, proximate composition, cooking loss and meat color values except shear force value compared to T5. Addition of 0.3% probiotics with 50% antibiotics (T3) tended to lower the blood cholesterol levels of broiler chicks and Escherichia coli or Salmonella counts in cecum microflora of broiler chicks compared to T5. In the residual antibiotics analysis, T3 contained 0.04 ppm of residual antibiotics in the breast meat while T4 or T5 contained 0.1 ppm of residual antibiotics and addition of 0.3% probiotics with 50% antibiotics in broiler diets could lower the residual antibiotics level to 40% in the meat. As a result, 0.3% probiotics addition with 50% antibiotics in the broiler diets could be recommended for the production of high quality broiler meat.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.5 no.1
• /
• pp.1-13
• /
• 1997

The fermentative conversion of food wastes into feed was investigated by seeding of mixed inoculum YM (Youngjin Environmental co.), and thermotolerant yeast Kl. marxianus. For 6 days' fermentaion, the fermentation method of 2 days' aerobic followed by 4 days' anaerobic was better for the production of organic acids and increasing total microbial population than 6 days' continuous aerobic or anaerobic fermentation. By seeding YM, the total microbial count increased about 100 times of the control group. In addition, Kl. marxianus seeding together with YM increased total viable cell count, but did not increase yeast count significantly.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.15 no.2
• /
• pp.98-108
• /
• 2007

In order to use food wastes for the source of fermented feed for pigs, this study was aimed to produce better culture inoculum by the aeration and addition of pig' s blood meal as sub nutrient. For the preparation of inoculum as bacterial strain, Lactobacillus brevis isolated from pig intestine, and a yeast Saccharomyces cerevisiae from strawberries were used. Molasses and whey were used as main ingredients for the culture solution as well as yeast extract and other ingredients as sub nutrients. As the experimental result, aeration showed a positive effect to enhance viable cell count or retarding death phase. Although sub nutrient yeast extracts were replaced with pig's blood meal, fermentation characteristics were almost similar to that of yeast extract. When the inoculum was stored at room temperature, L. brevis and S. cerevisiae maintained the viable cell concentration of approximately 8 log cfu/mL for 1 week. 2 Days after the culture solution was mixed with food waste, the number of unwanted bacteria had rapidly increased, but E.coli was not detected for 5 days.

• Journal of Animal Science and Technology
• /
• v.49 no.4
• /
• pp.501-508
• /
• 2007

This study was conducted to evaluate effect of probiotic complex(Lactobacillus acidophilus, Bacillus subtilis and Aspergillus oryzae) on growth performance, blood immunological parameters and fecal malodor gas emissions in growing pigs. Forty-eight pigs[(Landrace × Yorkshire) × Duroc, 25.31±1.29kg average initial body weight] were used in 35d growth trial. Dietary treatments included CON(basal diet), PC1(basal diet + 0.1% probiotic complex) and PC2(basal diet + 0.2% probiotic complex). From d 0 to 20, ADFI was significantly increased in PC1 and PC2 compared to CON(Linear effect, P=0.013). From d 21 to 35, ADFI was increased in PC1 compared to CON(Quadratic effect, P=0.024). For the whole period, ADFI was increased PC2 and PC1 compared to CON(Linear effect, P=0.009, Quadratic effect, P=0.004). For the whole period, ADG was increased in PC1 compared to CON(Quadratic effect, P=0.017). G/F was not affected by treatments. Dry matter digestibility in PC2 was higher than PC1 and CON(Linear effect, P=0.001). Nitrogen digestibility was significantly higher in PC2 and PC1 than CON(Linear effect, P=0.005). In blood immunological parameters, Total protein, IgG, red blood cell(RBC) and white blood cell(WBC) were increased in PC2 compared to PC1 and CON(Linear effect, P<0.001, Quadratic effect, P<0.001). In fecal malodor gas emission, ammonia and acetic acid were significantly reduced in PC2 compared to CON(Linear effect, P<0.02). Hydrogen sulfide was significantly reduced in PC2 compared to CON(Linear effect, P=0.0002, Quadratic effect, P=0.018). However, total mercaptans was not affected by treatments. Water content of feces was not significantly different among the treatments. In conclusion, 0.2 % probiotic complex improved ADFI, apparent dry matter and nitrogen digestibility, Total protein, IgG, RBC and WBC. Also, it decreased ammonia, acetic acid and hydrogen sulfide emissions in growing pigs.