• Title, Summary, Keyword: Chicken

Search Result 5,817, Processing Time 0.046 seconds

Performance of Growing Period of Two-way Crossbreed Parent Stock for Producing of Laying-Type Korean Native Commercial Chickens (산란전용 토종 실용계를 생산하기 위한 2원교배 종계의 육성 능력 검정)

  • Hong, Eui-Chul;Choo, Hyo-Jun;Kim, Hak-Kyu;Kim, Chong-Dae;Heo, Kang-Nyeong;Lee, Myeong-Ji;Son, Bo-Ram;Suh, Ok-Suk;Choi, Hee-Cheol;Kang, Bo-Seok
    • Korean Journal of Poultry Science
    • /
    • v.39 no.3
    • /
    • pp.177-182
    • /
    • 2012
  • This work was carried out to investigate the performance of growing period of two-way crossed of Korean native chickens parental stocks. A total of four hundred eighty female 2-crossbred chicks were used in this study and they were from National Institute of Animal Science. Groups were four crossbreds (4 replications/crossbred, 30 birds/replication) as A) C strain ${\times}$ Y strain, B) C strain ${\times}$ L strain, C) C strain ${\times}$ G strain and D) C strain ${\times}$ W strain. Body weight of A crossbred was the highest at the age of 8 week (P<0.05) and that of D strain was the lowest for growing period (P<0.05). Body weights of A and B crossbreds were higher than those of C and D crossbreds at the 12 and 16 weeks (P<0.05). Weekly body weights of A and B crossbreds were higher than C and D crossbreds (P<0.05), and weekly body weight of B crossbred was higher compared to other crossbreds at 0~20 weeks old. Weekly feed intake of D crossbred was the lowest among all crossbreds at 0~12, 0~16 and 0~20 weeks old (P<0.05). Weekly feed conversion ratio of C crossbred was the highest among crossbreds (P<0.05). These results can give the basic information for growth related data in 2-way crossbreed Korean Native Chickens, which can be used for the parental stocks for the laying-type of Korean native commercial chickens.

Dipteran Comparison on Carcasses by Decomposition at Different Abandoned Site (사체의 유기장소별 부패진행에 따른 발생 파리류 비교)

  • Lim, Chae-Seak;Jo, Tae-Ho;Lee, Dong-Woon;Choo, Young-Moo;Choo, Ho-Yul
    • Korean journal of applied entomology
    • /
    • v.51 no.3
    • /
    • pp.191-205
    • /
    • 2012
  • Because insect visitors was different depending on decomposition stage, dipterans occurred on chicken carcasses depending on postmortem intervals were compared by abandoned sites and decomposition from a serial study on arthropod occurrence from carcasses as forensic indicator. Species occurrence and decomposition of carcasses were different depending on abandoned sites (forest hill, open field, stream, greenhouse and roof), seasons (spring, summer, fall and winter), and situation (burying and non-burying). Development of carcass decomposition was faster at all sites in summer, carcass in greenhouse in winter, and unburied carcasses. Although visiting time of blow flies (Calliphoridae) (Phaenicia sericata, Lucilia illustris, Lucilia sp., Chrysomyia pinguis, and Chrysomyia megacephala) was different depending on abandoned season, their adults were generally collected from carcasses within 2 days. However, there were no visited flies at fresh stage of buried carcasses. The flesh flies (Sarcophagidae) were collected from all sites and seasons, and much faster from unburied carcasses than buried carcasses. Those were collected earlier from carcasses in greenhouse than other sites and occurrence was also shorter. In greenhouse, occurrence time of flesh flies were different depending on season; spring and summer - from fresh to active decay stage, fall - fresh to active decay stage, and winter - advanced decay to remains stage. Calliphora lata, Tricerotopyga calliphoroides, and Aldrichana grahami were dominant species and occurrences were different from other flies. These flies were active mainly from fresh to active stage. Larvae of sarcophagid flies were occurred earlier than those of calliphorid flies on buried carcasses.

The Study on Productivity of Commercial Korea Chickens for Crossbred Korean Native Chickens (한국 재래닭 및 토착종을 활용한 토종 실용계의 생산성 연구)

  • Lee, Myeong-Ji;Kim, Sang-Ho;Heo, Kang-Nyeong;Kim, Hak-Kyu;Choi, Hee-Cheol;Hong, Eui-Chul;Choo, Hyo-Jun;Kim, Chong-Dae
    • Korean Journal of Poultry Science
    • /
    • v.40 no.4
    • /
    • pp.291-297
    • /
    • 2013
  • This study was conducted to evaluate the productivity of Korean native chicken (KNC) 2 strains crossbred. The number of chicks analyzed in this study was 300. Crossbreds used in this studywere A) KNC R strains ${\times}$ KNC meat type S strains, B) KNC egg-meat D strains ${\times}$ KNC meat type H strains, C) KNC egg-meat D strains ${\times}$ KNC meat type S strains, D) KNC egg-meat C strains ${\times}$ KNC native Y strains, and E) KNC native Y strains ${\times}$ KNC meat type H strains. The crossbreds C had the highest performance on body weight gains at 7~10 weeks but crossbreds D showed the lowest (p<0.05). The feed conversion ratio of crossbreds D was the highest value at every weeks (p<0.05). But the carcass weight and carcass ratio of crossbreds D was the lowest value at every weeks (p<0.05). For the percentage of cutted meat, the ranges of mean were 30.60~33.75% in breast, 21.48~24.72% in leg, 11.95~14.33% in wing, 21.91~25.83% in back and of 7.38~8.72% in neck. The percentage of cutted meat for leg was the highest value at every weeks (p<0.05). These results suggested that the development of new crossbreds should be necessary for better performance.

Temperature Changes during Freezing and Effect of Physicochemical Properties after Thawing on Meat by Air Blast and Magnetic Resonance Quick Freezing (식육의 송풍식 냉동과 전기자장 냉동 중 온도 변화 및 이화학적 품질에 미치는 영향)

  • Kim, Young Boong;Woo, Sung Min;Jeong, Ji Yun;Ku, Su Kyung;Jeong, Jin Woong;Kum, Jun Seok;Kim, Eun Mi
    • Food Science of Animal Resources
    • /
    • v.33 no.6
    • /
    • pp.763-771
    • /
    • 2013
  • This study was carried out to investigate the effects of various temperatures of electro-magnetic resonance and air blast freezing methods on the physicochemical quality of meat. Beef (loin and round), pork (belly and ham) and chicken (breast and leg) were purchased at a commercial market, and the meat was frozen using three methods: air blast freezing ($-20^{\circ}C$ and $-45^{\circ}C$) and electro-magnetic resonance quick freezing. Changes in the physicochemical properties of meat were analyzed by drip loss, cooking loss, water holding capacity (WHC) and proximate compositions. In comparison, regardless of the animal species and cuts of meat, electro-magnetic resonance quick freezing (2 h) resulted in a completely frozen product in a much shorter time than $-20^{\circ}C$ and $-45^{\circ}C$ air blast freezing (24 h and 8 h, respectively). Drip loss of loin which had underwent electro-magnetic resonance quick freezing were significantly (p<0.05) lower than those of the other two treatments, but cooking loss and water holding capacity were the highest at 43.7% and 60.7%, respectively (p<0.05). Characteristics such as crude protein, crude fat and moisture compositions showed significant differences, depending on the cuts and freezing methods (p<0.05). The fat composition of electro-magnetic resonance quick frozen loin and round were significantly low (p<0.05). However, moisture content was the highest compared to other freezing methods, as 67.1% and 71.9%, respectively (p<0.05). Electro-magnetic resonance quick freezing was an appropriate way to reduce the deterioration of meat quality due to freezing, and the drip loss was least for the part with low moisture, low protein, and high fat.

Estimation on the Consumption Patterns of Potentially Hazardous Foods with High Consumer Risk Perception (식중독 위험성 인식이 높은 잠재적 위해식품 섭취실태조사)

  • Park, Hee Jin;Min, Kyung Jin;Park, Na Yoon;Cho, Joon Il;Lee, Soon Ho;Hwang, In Gyun;Heo, Jin Jae;Yoon, Ki Sun
    • Korean Journal of Food Science and Technology
    • /
    • v.45 no.1
    • /
    • pp.59-69
    • /
    • 2013
  • This study investigated the frequency, amount and consumption patterns of 50 potentially hazardous foods (PHF) along with consumers' risk perceptions towards PHF in Korea. A quantitative survey was performed from May through August by trained interviewers, surveying 1,000 adults aged over 18 who were randomly selected from six major provinces in Korea. Consumers perceived seafood, including shellfish, mussel, sashimi and sushi, as the top foods with the highest risk, followed by raw sliced beef. The food with the highest frequency intake per month was leafy vegetables, which is used to wrap other foods, followed by blanched vegetables, fried chicken, etc. The group of middle aged individuals with economic stability had the highest frequency intake of sashimi and sushi. Respondents living in small regions consume greater PHF portions at once. Food safety education with regard to the risk of PHF is essential for consumers, with high frequent intake of PHF.

Total Folate Contents of 15 Edible Plants Consumed in Korea Using Trienzyme Extraction Method (국내 소비되는 봄나물의 Trienzyme 추출법을 적용한 엽산 함량 분석)

  • Kim, Bo Min;Kim, So-Min;Oh, Ji Yeon;Cho, Young-Sook;Kim, Se-Na;Choi, Youngmin
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.43 no.11
    • /
    • pp.1796-1800
    • /
    • 2014
  • Trienzyme digestion (AOAC Official Method 2004.05) procedure using protease, ${\alpha}$-amylase, and chicken pancreas conjugase was evaluated to determine its usefulness in the microbiological quantitation of total folate in foods. Folate values obtained by alkali hydrolysis (Korean Food Standards Codex) were compared to those obtained by the trienzyme method for four certified reference materials (CRM) representing diverse matrixes. Trienzyme treatment increased measurable folate from most CRM compared to levels found after alkali hydrolysis. The largest increases were observed with CRM 487 (pig liver, 5.8-fold) and CRM 121 (whole meal flour, 3.1-fold) after trienzyme digestion. Using trienzyme digestion method, total folate contents of raw and blanched edible plants were determined. Eleutherococcus senticosus ($146.9{\mu}g/100g$) showed the highest total folate content, followed by Aster glehni F. Schmidt ($142.8{\mu}g/100g$) and Ledebouriella seseloides H. Wolff ($140.4{\mu}g/100g$) on a wet weight basis. Blanching of samples resulted in an insignificant decrease in folate content for five samples and 11~63% reduction for nine samples. Our finding suggests that trienzyme digestion method is accurate for the determination of food folate in leafy vegetables.

Analysis Study on the use of Frequency and the Cooking Method of Leaf and Stem Vegetables in High School Foodservice (고등학교 급식식단의 엽경채류 식재료 사용 빈도 및 조리방법 분석 연구)

  • Min, Ji-Hyeon;Lee, Jong-Kyung;Kim, Hyun-Jung;Yoon, Ki-Sun
    • Journal of Food Hygiene and Safety
    • /
    • v.31 no.4
    • /
    • pp.250-257
    • /
    • 2016
  • This study was conducted to extract the factors affecting the microbial safety of leaf and stem vegetables in the high school foodservice and to provide information for supplying the safe foodservice menu. The lunch and dinner menu (1,945 data) of the total 6 high schools at the Central and the South Region in March, June, September, and December were collected. The frequency analysis and the multiple correspondence analysis (MCA) based on the 3 factors (potentially hazardous food (PHF), leafy and stem vegetables in the menu, the cooking methods) were conducted. The most frequent PHF was the menu of blanched vegetables, salads, seaweeds and fried chicken. The most frequent consumed leaf and stem vegetables were spinach, chive, lettuce, Western cabbage, perilla leaf, iceberg lettuce, chicory, leek and broccoli. MCA based on the leaf and stem vegetables, the region, and the cooking method (cooked/non-cooked) showed that garlic stem and spinach were more used in the Central Region, while water drop-wort were more used in the South Region. Iceberg lettuce, Bok choy and leek were included frequently in the PHF menu. Plant products frequently used in PHF menu requires the food safety system such as Good Agricultural Practice (GAP) to reduce the microbial risk. The menu database according to raw materials based on cooking methods (heating or mixing) as well as the development and verification of menu based on the microbial safety will be contributed to provide the safer foodservice menu.

Study on Folklore Consciousness of Twelve Chinese Zodiac Animals Shown in Folk Painting (민화에 나타난 십이지동물의 민속의식에 관한 연구)

  • Lee, Jong kawn
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.17 no.6
    • /
    • pp.347-359
    • /
    • 2016
  • People are destined to live according to the time and fate after they are born. Man is connected with the idea that is called the Chinese zodiac sign related to one out of 12 animals, regardless of one's thought. This paper was written with the expectation that it will be a new turning point understanding the mutual influence and its changing process by catching the ethnic belief and emotion as well as its cultural background in the Asian Zone by investigating the meaning of the 12 Chinese zodiac shown in the folk painting from the viewpoint of folk lore including "Chinese zodiac sign" culture rooted in our daily lives. The animal 'Rat' has been lived well human beings accompanied by the fable or the nature, while the animal 'Ox' has been living together with human history. The 'Tiger' has been considered the 'Power retreating disease or a devil' to humans, which is the most frightening but near at hand. The 'Rabbit' in the fable is inculcating hope and ideals to humans. The imaginary 'Dragon' is rooted in the deep national belief, which is seated as 'Guardian god' of farming culture and mankind, while the 'Snake' is playing a role in protecting humans as the 'Sea God' in Tsushima and Jeju Island, and has been believed and followed in the deep mind of humans. The 'Horse' in the nomad culture has been adorned as the basic creature of nomadic society in the character of a psychic medium between the human and god or their 'Guardian god'. The ancient Japanese regarded 'Monkey' as holy, being connected with treasure. It infers a human's desire to borrow wisdom from 'Monkey'. 'Chicken' includes the meaning of a lucky sign connecting the sky and the human world by arranging together with humans. The 'Dog' is believed and followed as performing the function of a messenger connecting this world with the afterlife in the next world tale of shamanism. The 'Pig' also lives well with humans, being interpreted as fecundity. Although the meaning of the 12 Chinese Zodiac animals has ethnic differences, all of them have been shared with humans, rooted in the human mind, being believed, and followed in human lives.

Quality Evaluation of Spent Hen and Broiler with Pulsed Electric Field and Super Heated Steam Treatment (펄스자기장 및 과열증기 처리를 통한 노계육과 육계의 품질 평가)

  • Jeon, Ki-Hong;Hwang, Yoon-Seon;Kim, Young-Boong;Choi, Yun-Sang;Kim, Eun-Mi;Lee, Dong-Un;Choi, Jinyoung
    • The Korean Journal of Food And Nutrition
    • /
    • v.29 no.5
    • /
    • pp.753-759
    • /
    • 2016
  • The processing properties of spent hen and broiler chicken were investigated before and after treatment to improve texture characteristics. Each treatment consisted steaming (S) with $85^{\circ}C$ for 20 min, Pulsed Electric Field (PEF) with 1.5 KV/cm for 4 sec, and Super Heated Steam (SH) with an oven temp. of $300^{\circ}C$, a steam temp. of $350^{\circ}C$ for 8 min. The yield of spent hen and broiler were 66.85% and 63.80% respectively in the control, but decreased in every treatment was lowest at 61.05% in the PEF treatment (p<0.05). In the color test, L value decreased, but the a and b values increased regardless of the species of spent hen or broiler. In the test of heating loss, the S treatment of spent hen had the highest result of 45.25% but lowest of 30.66% in the SH treatment of the broiler. When it was compared with various treatments, SH after PEF treatment showed the better result in terms of heating loss than the PEF or SH treatment respectively. In the test of texture, the broiler showed the lowest hardness of 5.57 kg in the SH (p<0.05). Otherwise, the spent hen resulted in 14.08 kg of hardness in steaming after PEF, but it improved significantly to 10.73 kg in SH after PEF. In the test of 9 scored sensory evaluation of overall palatability, 7.8 point was the best score with SH treatment in the broiler. The best score in spent hen was 6.3 point which was SH after PEF treatment. With this experiment, SH after PEF was the condition in the treatments to have the better texture of spent hen.

Effects of Sea Tangle-added Patty on Postprandial Serum Lipid Profiles and Glucose in Borderline Hypercholesterolemic Adults (다시마 첨가 패티가 경계역 고콜레스테롤혈증 성인의 식후 혈청 지질 및 혈당 농도에 미치는 영향)

  • Kim, Hwa Hyun;Lim, Hyeon-Sook
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.43 no.4
    • /
    • pp.522-529
    • /
    • 2014
  • Sea tangle (Laminaria japonica) is well known as having anti-diabetic and hypolipidemic effects in animals as well as in humans. In this study, we evaluated the effects of sea tangle-added patty on postprandial blood glucose and lipid profiles in borderline-hypercholesterolemic (cholesterol ${\geq}200$ mg/dL) adults. Eleven subjects voluntarily participated in the experiment, and each subject provided written consent. Experimental patty (E) was made by adding 2.25 g of sea tangle powder as a substitution to 1.125 g each of pork and chicken. In the first week, 200 g of Control patty (C) was provided to each subject, who had fasted more than 12 hours. In the second week, the same amount of E patty was supplied under the same conditions. Serum glucose levels increased significantly less at 30, 60, and 120 min after consumption of E patty compared to the levels at all time points after eating C patty. Thus, the change in the area under curve (${\Delta}AUC$) of serum glucose levels through 120 minutes was lower when consuming E patty compared to C patty. Although serum C-peptide concentrations were not significantly different at all time points between the two patties, the ${\Delta}AUC$ of serum C-peptide concentrations through 120 minutes was lower when consuming E patty compared to C patty. However, there were no differences in serum levels of triglyceride, total cholesterol, LDL-C, and HDL-C at 30, 60, 120, 180, and 240 min between the two patties. Further, each ${\Delta}AUC$ of these lipid levels through 240 minutes was not significantly different between the two patties. The results indicate that sea tangle-added patty may decrease postprandial plasma glucose concentrations and reduce insulin secretion, although it might not ameliorate serum lipid profiles in adults with borderline-hypercholesterolemia.