• KOREAN POULTRY JOURNAL
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• v.52 no.9
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• pp.152-153
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• 2020

• KOREAN POULTRY JOURNAL
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• v.55 no.12
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• pp.106-106
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• 2023

• KOREAN POULTRY JOURNAL
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• v.56 no.2
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• pp.146-149
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• 2024

• Korean Journal of Poultry Science
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• v.44 no.4
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• pp.259-265
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• 2017

This study was to investigate the effect of chick weight in the early growth period on market-weight of Korean native chickens (KNCs). We measured the body weights of 1,087 chickens (male 479, female 608) of 13 KNC strains at 1-84 days of age at two week intervals. The growth performance of the 13 KNC strains was investigated. Correlation coefficients among the weights of chickens in each growth period and regression of market-weight on early chick weights were analyzed. The results showed that the average body weight of 70-day-old KNCs was 1,962g: 2,154g and 1,819.7g for males and females, respectively. The equation for regression of body weight on age was estimated as $\hat{Y}=0.1347X^2+18.738X-40.134$ ($R^2=0.9418$). Using this regression equation, the duration required to attain a KNC market-weight of 2 kg was estimated as 71.8 days. All the correlation coefficients between early chick weight and market-weight were significantly positive. Although the correlation coefficients among the chick weights in each growth period decreased with increase in age interval, early growth weight had a significant effect on late growth performance. The correlation coefficient between market-weight at 70-days and chick weight at 1-day was estimated to be a low as 0.10-0.13. In the estimations of market-weight correlation coefficients, correlation coefficient and coefficient of determination were high in the female and male chicks after 28-days and 42-days of age, respectively. The results of the analysis of correlation and regression between early chick weight and market-weight of KNCs showed that market-weight could be predicted based on the weights of 28-day-old females and 42-day-old males.

• Monthly Korean Chicken
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• v.16 no.8
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• pp.74-77
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• 2010

• KOREAN POULTRY JOURNAL
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• v.41 no.1
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• pp.133-135
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• 2009

기축년(己丑年) 새해가 밝았다. 지난해를 뒤돌아보면 2008년 4월에 발생한 조류인플루엔자는 많은 농가에 고통을 안겨주었다. 급기야 토종닭 가격은 1,000/kg 이하까지 형성되면서 예방적 살처분 등 방역이 강화되면서 수급이 조정되었고, 정부는 수매를 통한 신속한 대처로 냉동비축을 통해 어려운 시기를 넘겼지만 열악한 영세구조의 사업자나, 농가들을 부도 공포에 떨게 했다. 다행히도 업계는 서로 단합하는 모습을 보이며 상생의 희망을 갖고 자체적인 종란 감축 등 슬기롭게 위기를 극복하는 모습을 보여 주었다.

• Journal of Life Science
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• v.18 no.10
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• pp.1369-1376
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• 2008

In this study, the effects of feeding citrus byproducts on nutritional components of Korean native chickens were investigated. Two samples of Korean native chickens were used for this study: T0 (chickens fed with only feed for laying hen until they became 39 weeks old, not with citrus byproducts) and T1 (chickens fed with citrus byproducts). The feed for T1 was the same as T0 for the first 16 weeks, and then was made by adding 4% of citrus byproducts to the feed for T0 between $17{\sim}39$ weeks. The chicken used for the experiment was obtained by chilling them for 2 days after slaughter. There was no significant difference between T0 and T1 regardless of feeding citrus byproducts, in terms of their breast/thigh's calorie, contents of moisture, protein, fat and ash, total structural amino acid, total free amino acid and composition of saturated/unsaturated fatty acids. The breast's cholesterol amount of T0 and T1 were 48.4 mg/100 g and 47.6 mg/100 g, respectively, while that of thigh for T0 and T1 were 75.7 mg/100 g and 72.8 mg/100 g, respectively, which implies that T1 showed lower amount of cholesterol than T0. T1 showed significantly higher amount of phosphorus, potassium, magnesium and vitamin B2 for thigh than T0 (p<0.05).

• Korean Journal of Poultry Science
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• v.37 no.3
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• pp.207-213
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• 2010

The current study was conducted to estimate the effect of dietary pyroligneous acid (PA) on performance, noxious gas emission in excreta, blood parameter and fatty acid composition of breast meat in Korean native chicken. A total of 240 one-day-old chicks were allocated to three treatments (PA; 0, 0.1, 0.2%) with five replicate of 16 each per treatment for 10 weeks. Although there was no effect on the performance, ammonia gas concentration was significantly decreased in the PA treatments compared to the control (p<0.05). Birds fed PA had higher serum total protein and high density lipoprotein-cholesterol (HDL-cholesterol) concentration but lower triglyceride content in the PA 0.2% treatment than control (p<0.05). In fatty acids composition of breast meat, myristic and stearic acid were significantly decreased, whereas oleic and linolenic acid were significantly increased in the group fed PA compared to those of the control group (p<0.05). The result of the current study indicates that dietary PA may reduce the noxious gas emission and improve lipid levels as well as increase of monounsaturated fatty acids composition of breast meat in Korean native chickens.

• KOREAN POULTRY JOURNAL
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• v.49 no.5
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• pp.112-114
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• 2017

(사)한국토종닭협회는 지난 3월 28일 '2017 대의원 정기총회'를 개최하면서 문정진 회장을 새롭게 선출했다. 취임 후 열흘만인 지난 7일 기자간담회가 개최되면서 앞으로 3년간 협회를 이끌어갈 문정진 회장을 만나 당선 소감과 함께 앞으로 협회 운영 방안에 대해 들어보았다.

• KOREAN POULTRY JOURNAL
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• v.47 no.5
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• pp.124-128
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• 2015

국내 동물약품 시장의 선두 주자인 (주)고려비엔피(대표이사 김태환)가 국내 최초로 닭 아데노바이러스 백신 개발을 마치고 곧 시판에 들어갈 예정이다. 닭아데노바이러스는 1981년 국내에 처음으로 발생된 보고이래, 1980년대 후반에는 발생보고가 없었으나 2000년대 후반기에 접어들면서 발생사례가 증가하였으며, 주로 혈청형 4형, 8형, 9형, 11형에 의해 발생하는 것으로 조사되었다. 일반적으로 아데노바이러스는 후대병아리에 수직감염되는 결과를 야기하므로 종계에서부터 수직감염 예방에 최선을 다해야 하며 산란계와 토종닭, 육계에서도 발생할 수 있으므로 그 피해를 사전에 예방해야겠다. 이번호는에는 (주)고려비엔피를 소개코자 한다.