• KOREAN POULTRY JOURNAL
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• v.4 no.2 s.28
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• pp.62-65
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• 1972

Feed Stuffs yearbook issue라는 책자에 실린 B.S. Pomeroy 박사의 부로일러 질병에 대한 예방치료법을 소개함과 아울러 필자의 약간의 설명을 첨가 하였다. 현재 국내에서 발생되고 있는 부로일러 질병은 장염, 마렉병, 난황염, 살모넬라균증, 뇨산침착증, 폐렴, 백혈병 등을 들 수 있는데 이에 대한 설명은 가금협회육용계 능력검정시(1971. 11.1$\~$12.31)에 안양가축위생연구소 의뢰한 가검물분석을 중심으로 하여 차후 설명하기로 한다.

• Korean Journal of Veterinary Research
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• v.41 no.4
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• pp.591-596
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• 2001

The chicks from 6 field broiler farms revealed peripheral neuropathy including leg weakness, curled toes and drooped wings. Grossly distinctive enlargements of sciatic nerve, branchial nerve and lumbar nerve were observed in the chicks. Histologically nerve lesions consisted of demyelination of myelin sheaths, Schwann cell proliferation and swelling, and interstitial edema in the peripheral nerves of all birds examined. Axonal swelling and infiltration of small lymphocytes were observed, but not a primary lesion. After treatment of riboflavin, neurological disorder was markedly recovered. From these results, it is suggested that the peripheral nerve lesions in these cases were caused by dietary riboflavin deficiency.

• KOREAN POULTRY JOURNAL
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• s.5
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• pp.16-22
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• 1970

우리 나라 부로일러 산업은 1964년말부터라 할 수 있겠다. 그러나 불과 7년 남짓한 식육수요의 증대와 다른 육축의 신장의 한계에서 해마다 급진적인 발전을 보여 왔다. 오늘날 양계업 중에서 발전이 기대되고 또 육성시켜야 될 것으로 생각되는 것으로는 육자원(肉資源)으로서의 부로일러인 것이다. 그러나 해마다 불균형한 조화를 이루고 있는 사료값, 수송 운임비, 원료사료의 수급 등에 준한 부로일러가격의 계절에 따른 불안정 등에 크게 영향을 받고는 있으나 계속해서 부로일러 산업은 신장되어질 것이므로 여기에서 우리 나라 부로일러 산업의 과거와 앞으로의 문제점 등을 검토하기로 한다.

• Monthly Korean Chicken
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• v.5 no.4 s.46
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• pp.2-7
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• 1999

닭고기 품질인증제 적극 추진 - 닭 뉴캣슬병 예방접종 실시명령 개정 - 99년 농업용 면세유 공급 4,780억원 농가 혜택 - 미국 육계 생산, 10년후 $43{\%}$정도 증가 전망 - 규칙적인 소독으로 마이코톡신 문제를 방지하자 - 세계 가금육 생산, 매년 $5{\%}$이상 증가 예상 - HACCP 시행으로 살모넬라 오염도 낮춰 - 육계 성장률 개선에 효과있는 녹색광 - 상호 신뢰속에서 계육산업 발전 추구 - 육용계 저혈당증 - 급성폐사증후군(저혈당증)예방대책 - 계열사육성적 후반기에 높아 - 사육수수료 정산방식 검토키로

• Korean Journal of Poultry Science
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• v.36 no.2
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• pp.139-147
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• 2009

This experiment was conducted to investigate the effect of organic dietary ME and CP on performance, blood composition and meat quality of cross-bred chicks for 15 weeks. Experiments were factorially designed with 3,000, 3,050, and 3,100 kcal of ME/kg, and 21 and 22% CP for the first five weeks; 3,050, 3,100, and 3,150 kcal of ME/kg, and 19 and 20% CP for the second five weeks; and 3,100 and 3,150 kcal of ME/kg, and 17 and 18% CP for the rest of weeks. Each treatment consisted of four replicates. Weight gain increased in treatments with higher ME diets for the first five weeks, but feed intake decreased significantly as dietary ME increased (P<0.05). Feed conversion also improved in chicks fed 3,100 kcal of ME/kg diets compared with those of 3,000, and 3,050 kcal of ME/kg (P<0.05), but was not influenced by dietary protein. Weight gain and feed conversion showed similar tendency for the second five weeks to those of the first five weeks. However, feed conversion improved significantly in 3,100 and 3,150 kcal of ME /kg compared to 3,050 kcal of ME/kg (P<0.05). Dietary protein did not affect the performance at all for this period. Weight gain and feed intake tended to increase in higher ME and lower protein diets from 11 to 15 weeks of age, whereas feed conversion decreased in 3,150 kcal of ME/kg more than 3,000 kcal/kg. No difference was found by CP treatments (P<0.05). There were no interactions in performance, blood composition and meat quality between dietary ME and protein. Further studies need to describe in whole period experiments instead of periodical experiment.

• Journal of Animal Science and Technology
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• v.53 no.2
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• pp.119-126
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• 2011

The study was conducted to investigate the effects of dietary energy and protein levels on productivity and feed cost in crossbred chicks. Experiment was divided into starting (0~5 weeks), growing (6~10 weeks), and finishing (11~14 weeks) periods. Design of feeding trials was 3 ${\times}$ 3 factorial to feed different energy and protein levels for starting (ME 2,950, 3,000, and 3,050 kcal/kg CP 18, 19, and 20%), growing (ME 3,000, 3,050, and 3,100 kcal/kg CP 17, 18, and 19%) and finishing (ME 3,050, 3,100, and 3,150 kcal/kg CP 16, 17, and 18%) periods, respectively. In the starting period, weight gain and FCR was improved by dietary protein level (P<0.05). Interaction effect existed in feed intake and FCR (P<0.05). Weight gain was higher in 3,000 kcal/kg ME treatment than 3,100 kcal/kg ME treatment for growing period (P<0.05). In finishing period, feed intake was significantly decreased in ME 3,150 kcal/kg treatment than the other ME treatments (P<0.05). Feed cost/weight gain (FC/WG) was significantly decreased in chicks fed with 2,950 kcal/kg ME and 19% CP in starting period (P<0.05). For the growing period, FC/WG was notably increased in ME 3,000, 3,050 kcal/kg treatment than ME 3,100 kcal/kg treatment, and the FC/WG of CP 17, 18% treatment was significantly higher than CP 16% treatment (P<0.05). Thus, the optimum levels of ME and CP to improve the productivity and feed cost for starting, growing and finishing periods were 2,950 kcal/kg ME, 19% CP 3,000 kcal/kg ME, 18% CP and 3,100 kcal/kg ME, 17 or 16% CP, respectively.

• Korean Journal of Poultry Science
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• v.51 no.1
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• pp.11-19
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• 2024

This study was conducted to evaluate the potential of using laying hens as meat type chickens. Male broiler (Ross 308, R3), laying hens (Hy-Line Brown, HL), and Korean native chickens (Hanhyup-3, H3) were used, and 100 heads of each were prepared. Carcass characteristics, meat quality, and sensory quality characteristics were compared as analysis items. The rearing environment and feed for all treatments were identical to the broiler rearing manual, and the lighting system was maintained at 23L:1D. Feed and water were provided ad libitum. The test ended when the average weight of each treatment group reached 1.5 kg, and individuals of similar weight were randomly selected and compared. As a result of this study, the live weight of the selected individuals was approximately 1.5 kg, which was similar for all treatments (P>0.05). However, carcass weight and ratio and breast meat production were highest in R3, while HL had higher ratios of legs, wings, and neck (P<0.05). The H3 group showed high pH and WHC levels and low cooking loss, and R3 improved chicken meat color (P<0.05). In particular, the fat content in meat was lowest in HL (P<0.01). Nucleic acid substances ATP, Hx, ADP, AMP, and INO were abundant in R3, and IMP content was highest in HL (P<0.05). In sensory evaluation, all treatments showed similar characteristics and overall preferences (P>0.05). Based on the findings, it appears that HL, a male laying hen, produces meat with unique characteristics such as low fat content and high IMP content.

• Korean Journal of Poultry Science
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• v.35 no.3
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• pp.291-302
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• 2008

To acquire essentially necessary basic data to establish feeding system by verifying appropriate dietary energy and protein level for the growth of commercial slow growing broiler chicks within the country, two experiments were conducted for 5 weeks. One day old, 1,404 male and female broiler chicks were used for the experiments, and 26 chicks were placed at each pen. The energy level of feed was maintained about 3,000 or 3,100 kg/kcal for whole breeding period of 5 weeks, and protein content was adjusted about 20, 21, and 22% during the first two weeks and the content was adjusted to 18, 19, 20, 21, and 22% from the 3 to 5 weeks old of the experiment. The categories of body weight and feed intake amount were monitored to calculate the productivity and blood sampling was conducted for the analysis at the end of each experiment. Experiment 1:Although the productivity by the ME content difference during $0{\sim}2$ weeks did not have significant difference and the body weight increase by the difference of CP content and feed intake amount did not have much difference, the feed requirement rate was statistically improved in CP 21 and 22% treatment groups compared to the CP 20% group (P<0.05). The feed ME 3,100 kcal/kg treated group during $3{\sim}5$ weeks after starting the experiment revealed to show improved feed requirement rate (P<0.05). Within the period of experiment, the CP 22% treated group resulted to show significant body weight increase compared to the groups treated with low levels of CP (P<0.05) and the feed requirement rate was improved in high CP treated group compared to low CP treated groups, but the feed intake amount did not show significant difference between treated groups. During the experiment period, the body weight increase and feed requirement rate revealed to interact between ME and CP (P<0.05). During the whole experiment period of the 5 weeks, the feed requirement rate was improved in ME 3,100 kcal/kg treated group than the groups treated with ME 3,000 kcal/kg, and the CP (20) 18% treatment groups resulted to show higher values than other treatment groups (P<0.05). Body weight increase was high in CP (22) 22% treated groups than those of CP (21) 21% and (20) 18% treated groups, and the interaction between ME and CP was found at body weight increase and feed requirement rate (P<0.05). Although blood albumin and total cholesterol levels were elevated in ME 3,100 kcal/kg treated group than ME 3,000 kcal/kg treated group, but neutral fat content was reduced (P<0.05). On the other hand, the total cholesterol content was increased in CP (22) 21% treated group than CP (22) 20% and CP (20) 18% treated groups (P<0.05). Experiment 2: The body weight increase in 0-2 weeks was higher in ME 3,100 kcal/kg treated group than ME 3,000 kcal/kg treated group, and it was highly improved in CP 22% treated group than CP 20% treated group by showing the interaction between CP and ME (P<0.05). The significant improvement of feed requirement rate was observed in CP 21% and 22% treated groups compared to CP 20% treated group (P<0.05). The productivity between the growth period from 3 to 5 weeks of age and whole growth period resulted to show no significant difference. Although no difference was observed in blood composition between treated groups, the interaction of ME and CP on cholesterol content was accepted at the range of P<0.05). Therefore, it is considered that the appropriate dietary protein level within feed for the physiology of growing broiler chicks was 22% or more for the first two weeks and protein level of 21% or 20% from 3 to 5 weeks old for the maximization of productivity. Even if the energy level within feed had some partial effects on the productivity, but did not show consistency. So, further experiments needto be conducted by differentiating the energy level.

• Korean Journal of Poultry Science
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• v.20 no.1
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• pp.11-15
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• 1993

Environmental measurements were made in 10 broiler confinement houses in order to characterize dust contaminants. Particles were collected by filters on nine stages Anderson Air Sampler, The obtained results were summarized as follows ; 1. The concentrations of the total suspended particles(TSP) were 7.584 mg/$m_3$~11.589mg/$m_3$ in 10 day old broiler houses and 15.836 mg/$m_3$~22.471 mg/$m_3$ in 30 day old broiler houses. 2. The concentrations of the coarse particles were 4.974 mg/$m_3$~18.981 mg/$m_3$ in 10 broiler confinement houses. Therefore, it was found that the coarse particles contributed to TSP between 65.6% and 85.0%. 3. The dust levels were higher in 30 day old broiler houses with TSP averaging about 19.341 mg/$m_3$ than 9.491 mg/$m_3$ in 10 day old broiler houses. In view of the above results , It was concluded that domestic broiler houses need artificial ventilation system.

• KOREAN POULTRY JOURNAL
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• v.15 s.168
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• pp.33-36
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• 1983

브로일러의 소비신장이 눈에 띠게 증가하고 있다. 금년상반기에 육용계 배합사료 생산량은 약 30만톤으로 작년 같은 기간에 비해서 37.25$\%$나 증가되었다. 정부에서도 육류소비구조 개선사업으로 닭고기의 소비증대를 위해 수입쇠고기 포장육을 20$\%$ 의무화 하였다. 우리는 아직도 포장이나 부분육에 대한 기준이 없어 규격과 품질이 다양해 불편하며 하루속히 그 기준을 정하는 것이 필요하다. 본지는 일본의 도계품기준을 이미 소개한 바 있으며 이번 호에서는 미국 BNC (National Broiler Council)자료를 입수하여 미국의 포장방법과 부분별 용도를 소개하고 최근 TV, 라디오, 신문$\cdot$잡지 등에서 닭고기구매방법에 대한 문의가 많아지고 있으나 아직 국내에서는 요리법이나 부분육제품이 이에 맞게 생산되지 않고 있다. 그러나 앞으로를 위해서 소개하고 그동안 가정에서 주부가 할 수 있는 방법을 소개한다. 중량단위가 우리와 달라 이해에 어려운 점도 있는데 이는 우리 현실에 맞게 앞으로 조정될 것으로 믿는다.