• 제목/요약/키워드: chicken performance

검색결과 363건 처리시간 0.029초

한국 재래 오골계의 생산기술과 현황 (Present Status of Research and Commercial Production of Korean Ogol Chicken)

  • 한성욱
    • 한국가금학회지
    • /
    • 제23권3호
    • /
    • pp.145-151
    • /
    • 1996
  • The origin and present status of research and commercial production of Korean Ogol chicken are reviewed. The Yeonsan Ogol chicken was designated as a National Monument (No.265) at April 1, 1980. After that, researches have been done on the various aspects of Ogol chicken, i.e., external characteristics, growth and reproductive performance, chemical composition of egg and meat, and carcass characteristics. In addition, several genetic parameters of Ogol chicken have been estimated.

  • PDF

수분 섭취의 증가가 닭의 고온 스트레스 완화에 미치는 효과 (Effect of Increased Water Intake on the Alleviation of Heat Stress in Chicken)

  • 이봉덕
    • 한국가금학회지
    • /
    • 제21권2호
    • /
    • pp.93-99
    • /
    • 1994
  • Chickens subjected to heat stress decrease their heat production by consuming less feed. The lowered feed intake naturally brings about decreased production performance of chicken. The only exception to this is the increased survivability. Birds drink less when they eat less. In hot enviror-mental temperature, chicken need more water for increased heat loss through evaporation an increased urine excretion. Thus, the increased water intake may alleviate the heat stress of chicken. Various electrolytes supplementation to feed or drinking water can alleviate the heat stress of chicken by their effect of increasing water intake. Lasalocid, an ionophorous coccidiostat, was found to have the effect of increasing water consumption of chicken, thereby improving the lowered production performance of heat-stressed chicken. Finally, dietary fiber could be another possible element which can exert beneficial effects on heat-stressed chicken.

  • PDF

프랜차이즈 계약관리레버리지를 활용한 프랜차이즈 기업의 성과 분석과 전망 -치킨·커피 프랜차이즈 브랜드를 중심으로- (Franchise Business Analysis and Forecast Using Franchise Contract Management Leverage in Chicken·Coffee Franchise Brands)

  • 이성희;이성훈
    • 한국프랜차이즈경영연구
    • /
    • 제6권2호
    • /
    • pp.67-85
    • /
    • 2015
  • This study attempts to measure the performance of franchise brands using the Enterprise Contract Management(ECM) and Franchise Contract Management Leverage(FCML). The data were collected from 14 chicken franchise brands and 16 coffee franchise brands. This research suggests some implications as follows. Chicken franchise brands are confronted with the slow growth, but coffee franchise brands still have the potential growth. According to FCML, as well, it shows that chicken franchise brands should focus on qualitative performance through franchise store management to achieve sustainability, and coffee franchise brands need the managerial strategies to maximize franchisees' sales profit, which leads increasing franchisor's business performance ultimately.

치킨 프랜차이즈의 COVID-19 상황 속 경영성과 분석 - 재무제표 분석을 중심으로 (Analysis of the Financial Performance of Chicken Franchises during the COVID-19 - Focusing on Financial Statement Analysis)

  • 정재량;최종우
    • 한국프랜차이즈경영연구
    • /
    • 제15권1호
    • /
    • pp.61-78
    • /
    • 2024
  • Purpose: Dining out at restaurants was limited during the COVID-19 period. In order to confirm the impact of COVID-19 on the chicken market, this study selected three chicken companies, Kyochon, BBQ, and BHC, and conducted financial statement analysis and regression analysis. Research design and methodology: Each company's financial statements were divided into before and after COVID-19, and the rate of change and financial ratio for each item were calculated to see if there were any significant changes, and the impact of COVID-19 on each company's sales was identified through regression analysis. Result: As a result of the study, the increase in sales and assets of each company continued, and the influence of COVID-19 could be confirmed through regression analysis. It can be inferred that COVID-19 indeed affected the expansion of the chicken market. Conclusion: Therefore, it was confirmed through this study that COVID-19 had a significant effect on the growth of the chicken market. While individual chicken small business owners are grappling with declining sales per outlet, the decline of commercial areas, and a surge in closures, the broader chicken franchise industry is witnessing a surge in demand and business expansion prompted by the pandemic.

Identification of SNPs in Cellular Retinol Binding Protein 1 and Cellular Retinol Binding Protein 3 Genes and Their Associations with Laying Performance Traits in Erlang Mountainous Chicken

  • Wang, Yan;Xiao, Li-Hua;Zhao, Xiao-Ling;Liu, Yi-Ping;Zhu, Qing
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제27권8호
    • /
    • pp.1075-1081
    • /
    • 2014
  • CRBP1 (cellular retinol binding protein 1) and CRBP3 (cellular retinol binding protein 3), are important components of the retinoid signaling pathway and take part in vitamin A absorption, transport and metabolism. Based on the role of vitamin A in chicken laying performance, we investigated the polymorphism of CRBP1 and CRBP3 genes in 349 chickens using single strand conformation polymorphism and DNA sequencing methods. Only one polymorphism was identified in the third intron of CRBP1, two polymorphisms were detected in CRBP3; they were located in the second intron and the third intron respectively. The association studies between these three SNPs and laying performance traits were performed in Erlang mountainous chicken. Notably, the SNP g.14604G>T of CRBP1 was shown to be significantly associated with body weight at first egg (BWFE), age at first egg (AFE), weight at first egg (WFE) and total number of eggs with 300 age (EN). The CRBP3 polymorphism g.934C>G was associated with AFE, and the g.1324A>G was associated with AFE and BWFE, but none of these polymorphisms were associated with egg quality traits. Haplotype combinations constructed on these two SNPs of CRBP3 gene were associated with BWFE and AFE. In particular, diplotype H2H2 had positive effect on AFE, BWFE, EN, and average egg-laying interval. We herein describe for the first time basic research on the polymorphism of chicken CRBP1 and CRBP3 genes that is predictive of genetic potential for laying performance in chicken.

혼합 생균제 급여가 한국 토종닭의 생산성과 가슴살의 지방산 조성에 미치는 영향 (Growth Performance and Fatty Acid Profiles of Korean Native Chicken Fed Diets with Mixed Probiotics)

  • 이혁준;김동현;주영호;윤희;최인학;김수기;송인근;장인환;김삼철
    • 한국환경과학회지
    • /
    • 제24권3호
    • /
    • pp.323-328
    • /
    • 2015
  • This study aimed to investigate the effects of dietary supplementation of mixed probiotics on growth performance and fatty acid profiles of Korean native chicken and to provide information regarding producers. Ninety six Korean native chicken (48 males and 48 females, Hanhyup-3-ho) were allocated to 16 wire cages with 4 treatments, 4 replicates and 6 chicks (3 males and 3 females) per wire cage and fed one of four diets containing 0, 0.5, 1 and 1.5% mixed probiotics for 6 weeks. There were no differences among treatments in growth performance of Korean native chicken. For fatty acid profiles, no statistically differences in each fatty acid, total saturated fatty acid and unsaturated fatty acids were observed in all treatments. In the present study, irrespective of statistically differences, inclusion of mixed probiotics tended to improve growth performance, reduce saturated fatty acid and increase unsaturated fatty acids in breast muscles from Korean native chicken compared to controls.

토종닭 품질 특성에 대한 주부의 인식 조사 (Housewives' Awareness of the Quality Attributes for Korean Native Chickens)

  • 김현철;이민아;조철훈;남기창
    • 한국가금학회지
    • /
    • 제42권4호
    • /
    • pp.275-283
    • /
    • 2015
  • 닭고기 구매 의사결정력이 높은 503명의 일반 주부를 대상으로 토종닭의 생산에서 소비까지 관련된 품질 속성들을 선발하여 중요도-만족도 분석을 실시하였다. 중요도와 만족도 모두 높은 유지강화 대상으로는 원산지(origin), 유통기한(shelf life), 신선도(freshness), 위생/안전성(hygiene/safety) 등이 해당되었으며, 높은 중요도를 지님에도 만족도가 낮아 중점개선 대상으로는 토종닭 인증(certification), 냉동 여부(freeze or not) 등이 해당되었다. 건강에 대한 관심도 증가에 따라 정육량(lean meat) 또는 단백질(protein) 함량에 관심을 보였고, 관능적 특성으로 토종닭 특유의 쫄깃한 식감에 대한 중요도와 만족도가 높았다. 향후 새롭게 개발될 토종닭 품종에 대해서는 현재보다는 더 연하면서도 풍미가 강하고 쫄깃한 식감이 강한 것을 선호하였다. 이 결과를 통해 토종닭 구입 시 주요 속성과 앞으로 개선해야 할 품질적 특성 방향을 제시함으로써 신품종 토종닭의 육종 방향을 제시하고 있다.

Development of Automatic Chicken Cutting Machine

  • Woo, Duk Gam;Kim, Yeong Jin;Lim, Hack kyu;Kim, Tae Han
    • Journal of Biosystems Engineering
    • /
    • 제43권4호
    • /
    • pp.386-393
    • /
    • 2018
  • Purpose: Chicken cutting is done manually, which is inefficient, unhygienic, and carries a high accident risk during processing. This study develops and evaluates an automatic chicken cutting machine that suits small-scale workplaces. Methods: This study developed an automatic chicken cutting machine equipped with four traverse blades and two longitudinal blades. An experiment was conducted with various blade rotating speeds and tray feed rates to evaluate the machine's performance. The chicken loss rate and chicken piece weights were measured to calculate the coefficient of variation (CV), thereby determining processing uniformity. Results: The optimal cutting conditions with the smallest chicken loss rate were 0.05 m/s tray feed speed and 18.8 m/s and 16.4 m/s for the traverse and longitudinal blades, respectively. The processing ran at 55.3 chickens per hour and the chicken pieces were more uniform when using the device than for hand-work processed pieces. Conclusions: The loss rate increased in proportion to the cutting-blade rotation speed due to the high cutting rate in meat. The loss rate also increased as the tray feed speed slowed because the cutting blade pushed the chicken meat. The tray feed speed should be increased to improve the amount processed per hour.

Evaluation of Growth, Carcass, Immune Response and Stress Parameters in Naked Neck Chicken and Their Normal Siblings under Tropical Winter and Summer Temperatures

  • Rajkumar, U.;Reddy, M.R.;Rao, S.V. Rama;Radhika, K.;Shanmugam, M.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제24권4호
    • /
    • pp.509-516
    • /
    • 2011
  • The performance of naked neck and normal chicken was evaluated with respect to growth, carcass, immune, biochemical and stress parameters under winter and summer seasons to assess the suitability of naked neck birds under high temperatures in the global scenario of climate change. The growth performance was significantly ($p{\leq}0.05$) higher in naked neck chicken in the summer season. The dressing percentage was significantly ($p{\leq}0.05$) higher in naked neck birds in both winter and summer season because of reduced plumage. The thigh, giblet and feather proportion significantly ($p{\leq}0.05$) varied between naked neck and normal chickens in summer season. The humeral immune response to sheep red blood cells (SRBC), Newcastle disease vaccine (NDV) and cutaneous basophil hypersensitivity (CBH) did not show any significant differences among the chicken groups. The protein and cholesterol concentration observed was within the normal ranges. The total cholesterol levels in plasma were significantly ($p{\leq}0.05$) lower in naked neck birds in both the seasons. H:L ratio was significantly ($p{\leq}0.05$) lower in summer season indicating less stress in naked neck chicken. Basophil and eosinophil concentration was significantly ($p{\leq}0.05$) higher in normal chicken in summer. The lipid peroxidation was higher in full feathered birds under summer stress. The enzyme glutathione reductase (GR) levels were significantly higher during the summer and varied significantly ($p{\leq}0.05$) between the normal and naked neck chicken in both seasons. The results indicated that the naked neck birds performed significantly better at high ambient temperatures with respect to growth, carcass and biochemical parameters. It was concluded that the ability of the naked neck chicken to adapt to high temperatures foresees a viable option for the biological mitigation of climate change.

Simultaneous Determination of Sulfonamides in Porcine and Chicken Muscle Using High Performance Liquid Chromatography with Ultraviolet Detector

  • Shim, You-Sin;Shin, Dong-Bin;Cho, Yong-Sun;Choi, Yun-Hee;Lee, Sang-Hee
    • Food Science and Biotechnology
    • /
    • 제18권6호
    • /
    • pp.1430-1434
    • /
    • 2009
  • The present study used the liquid extraction pretreatment method and developed a liquid chromatographyultraviolet detector (LC-UV) for the simultaneous determination of 14 sulfonamides (SAs) residues in porcine and chicken muscle. Linearity within a range of $50-150\;{\mu}g/kg$ was obtained with the correlation coefficient ($r^2$) of 0.9673-0.9997. The mean recovery of SAs was 55.9-109.7% (relative standard deviations; RSDs 1.7-17.3%) in porcine muscle and 52.8-112.4% (RSDs 2.3-16.9%) in chicken muscle. The limits of detection (LODs) and limits of quantification (LOQs) were 2-32 and $7-96\;{\mu}g/kg$ in porcine muscle, and 4-32 and $13-97\;{\mu}g/kg$ in chicken muscle, respectively. These values were lower than the maximum residue limits (MRLs) established by the European Union. The sum of all SAs residues present should be less than $100\;{\mu}g/kg$.