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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Poultry Science
Journal Basic Information
Journal DOI :
The Korean Society of Poultry Science
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Volume & Issues
Volume 40, Issue 4 - Dec 2013
Volume 40, Issue 3 - Sep 2013
Volume 40, Issue 2 - Jun 2013
Volume 40, Issue 1 - Mar 2013
Selecting the target year
Effects of Dietary Supplementation of Bacteriophage CP on Growth Performance, Nutrient Digestibility, Blood Profiles, Carcass Characteristics and Fecal Microflora in Broilers
Baek, Hee Yeob ; Kim, Jae Won ; Kim, Jung Un ; Kim, In Ho ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 283~290
DOI : 10.5536/KJPS.2013.40.4.283
This experiment was conducted to investigate the effects of dietary bacteriophage CP supplementation on growth performance, nutrient digestibility, blood profiles, visceral organ weight, meat quality and fecal microflora in broilers. A total of 340 1-d-old ROSS 308 broilers (mixed gender) with an initial average body weight (BW) of
were randomly allotted to 4 treatments with 5 replicate pens per treatment and 17 broilers per pen for 31 days. Dietary treatments were: 1) CON, control diet, 2) CP05, CON + 0.05% bacteriophage CP, 3) CP10, CON + 0.10% bacteriophage CP and 4) CP15, CON + 0.15% bacteriophage CP. During d 15 to d 31, broilers fed CP15 diet had higher (P<0.05) body weight gain and feed intake than broilers fed CON diet. Overall, body weight gain in CP10 and CP15 treatment groups was greater (P<0.05) than that in CON treatment and feed intake was higher (P<0.05) in CP15 treatment than that in CON. Apparent total tract nutrient digestibility and blood characteristics did not differ (P>0.05) among treatments. The water holding capacity of breast meat increased (P<0.05) in broiler fed the diets containing bacteriophage CP compared with those fed the CON diet. Other meat characteristics such as pH value, breast muscle color (
) and drip loss were unaffected by dietary supplementation of bacteriophage CP. The weight of bursa of Fabricius increased (P<0.05) in CP05 when compared with CON. No significant difference was observed (P>0.05) among treatments in visceral weight and fecal microflora concentrations of Lactobacillus spp., Clostridium perfringens, Escherichia coli and Salmonella spp. In conclusion, dietary supplementation with 0.10 and 0.15% bacteriophage CP could improve the growth performance.
The Study on Productivity of Commercial Korea Chickens for Crossbred Korean Native Chickens
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, volume 40, issue 4, 2013, Pages 291~297
DOI : 10.5536/KJPS.2013.40.4.291
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
KNC meat type S strains, B) KNC egg-meat D strains
KNC meat type H strains, C) KNC egg-meat D strains
KNC meat type S strains, D) KNC egg-meat C strains
KNC native Y strains, and E) KNC native Y strains
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.
Primary Culture of Chicken Tracheal Epithelial Cells and Study on Those Characters for Recombinant Virus Infection
Park, Mi Na ; Jang, Hyun-Jun ; Keum, Dae Ho ; Choi, Jin Ae ; Yoo, Jae Gyu ; Byun, Sung June ; Park, Jong Ju ; Ji, Ju Young ; Lee, Kyung-Tai ; Kim, Tae-Hun ; Lee, Hyun-Jeong ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 299~304
DOI : 10.5536/KJPS.2013.40.4.299
Tracheal epithelial cells (TECs) are an important tool for studies of viral respiratory diseases. Primary TECs have been cultured from human, mouse and hamster. It is also necessary to diagnose viral respiratory disease and reveal infection mechanisms in chicken. In this study, we isolated tracheal epithelial layers from tracheal of 20-day-old chicks and cultured primary TECs from the isolated layers. Ciliated cells which were a typical morphology of TECs were observed in cultured primary TECs and maintained until cell passage 5 (15 to 20 days). When we analyzed expression patterns of epithelial marker genes (retinoic acid responder, FGF-binding protein, virus activating protease (VAP) in TECs compared to immortalized chicken embryonic fibroblast cell line (DF-1), all the marker genes are highly expressed in TECs than in DF-1. When TECs were cultured with 0.1 and 1 MOI of ND virus (rNDV-GFP strain) to test the susceptibility of TECs for ND virus, 12.6% and 48.2% of the incubated TECs were infected respectively. In addition, when DF-1 was incubated with 1 MOI of ND virus, the virus infection rate of DF-1 was three times lower than the virus infection rate of TECs. These data could contribute to study infection mechanisms of viral respiratory diseases and control them in chicken.
Occurrence of Clostridium perfringens according to Raising Periods in Broilers
Choe, Changyong ; Park, In-Jae ; Kang, Min ; Jang, Hyung-Kwan ; Hur, Tai-Young ; Jung, Young-Hoon ; Cho, Yong-Il ; Do, Yoon-Jung ; Yoo, Jae-Gyu ; Na, Jae-Cheon ; Hwangbo, Jong ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 305~313
DOI : 10.5536/KJPS.2013.40.4.305
The objective of this study was to investigate occurrence patterns of Clostridium perfringens on different raising periods in broilers. In different raising periods, we investigated the change in the gross lesion and microscopic histological findings of the mucose of the small intestine, colony forming unit (CFU) and the types C. perfringens with PCR assay. According to the gross lesions on the mucose of small intestine with 10-days-old broilers, the non-antibiotic group showed a higher value (0.6) than the antibiotic group (0.0). Whereas 20-days-old broilers with, the antibiotic treatment had a slightly lower value (1.0) than the non-antibiotic group (1.3). In the histological examination on the villi of the small intestine, there was no damage of the villi of the small intestine with 1-day-old broilers in both groups; however, the non-antibiotic group showed a higher value (0.4) than the antibiotic group (0.0) with 10-days-old broilers. In the non-antibiotic group, the CFU of C. perfringens of the fecal samples from the small intestine increased from 10 days of raising broilers and rapidly increase after 20 and 30 days of raising broilers. There was no detection of C. perfringens types with PCR assy in 1-day-old broilers, but we found C. perfringens type A in 10-, 20- and 30-days-old broilers. Although it is possible to raise healthy broilers by using antibiotics, the addition of antibiotics to concentrate feed is prohibited for public health. The results of this study would contribute to proper feeding management through the careful use of antibiotics.
The Effects of Doenjang (Korean Traditional Fermented Soy Bean Paste) Powder on the Quality and Shelf-Life of Chicken Sausages during Storage
Kim, Dong-Soo ; Song, Yeong-Rae ; Muhlisin, Muhlisin ; Seo, Tae-Su ; Jang, Aera ; Lee, Sung-Ki ; Pak, Jae-In ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 315~325
DOI : 10.5536/KJPS.2013.40.4.315
In this study, the effects of Doenjang powder (DP : Korean traditional fermented soy bean paste) addition on the quality and shelf-life of chicken sausages during storage were evaluated. The chicken sausages were manufactured with 60% of chicken breast meat, 20% of chicken skin and other ingredients. The sausages were divided into four treatments according to DP addition level such as 0, 2, 5 and 8%. The sausages were vacuum packed and stored at a refrigerator (
) for 4 weeks. pH of sausage was in creased with DP addition after 2 weeks storage (p<0.05). The addition of 2% and 5% DP decreased the lipid oxidation (TBARS) value (p<0.05) and addition of 8% DP seemed to promote the protein deterioration (VBN) over the storage (p<0.05). In the instrumental color, the chicken sausages with 5% and 8% DP showed higher redness and lower lightness value than sausage with 0 and 2% DP (p<0.05) over the storage. The hardness and gumminess of chicken sausages added with 5% DP were significantly lower than those of other treatments during the storage (p<0.05). The addition of DP detained the growth of aerobic and anaerobic bacteria counts after 2 week of storage (p<0.05), but no significant difference was found by DP addition level (p>0.05). In conclusion, 5% DP could be used as ingredient of chicken sausage to enhance sensory quality and retard lipid oxidation.
The Effect of Washing of Carcasses with Sodium Hypochlorite Solution and Vacuum Packaging on the Microbiological and Physiochemical Quality of the Breast Meat from Old Hen during Storage at 4℃
Na, Jae Cheon ; Kim, Sun Hyo ; Jung, Samooel ; Lee, Soo Kee ; Kang, Hwan Gu ; Choi, Hee Cheol ; Jo, Cheorun ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 327~336
DOI : 10.5536/KJPS.2013.40.4.327
This study was conducted to examine the effect of spray-washing old hens (old laying hens, old molting hens and old breeder hens) carcasses with sodium hypochlorite (50 ppm) solution and vacuum packaging on the microbiological and physiochemical quality of breast meat during storage at
. There were no significant differences of cooking loss and texture among breast meats from different birds with spray-washing by water or sodium hypochlorite solution before storage. The numbers of total aerobic bacteria of aerobically packaged and only water-washed breast meat were higher than 7 Log CFU/g (the limitation population for spoilage of meat) after 7 days of storage. However, the numbers of total aerobic bacteria of vacuum packaged breast meat washed by sodium hypochlorite solution were lower than 7 Log CFU/g even after 14 days of storage. The volatile basic nitrogen content of vacuum packaged breast meat were lower than 20 mg% (the limitation value for spoilage of meat) regardless of the washing method, while those of aerobically packaged breast meat washed by tap water and sodium hypochlorite solution were 41.1 and 20.1 mg%, respectively. In addition, lipid oxidation and change of pH in breast meat was inhibited by vacuum packaging when compared with that of aerobic packaged breast meat during storage. Therefore, the results indicated that the washing old hen's carcasses with sodium hypochlorite (50 ppm) solution and vacuum packaging could improve the shelf-life of meat from old birds. This result can provide the basic information for industry, which are seeking for export market.
Egg Cholesterol is not related with Heart Disease : A Review
Kang, Geunho ; Kim, Dong-Hun ; Kim, Hye Kyung ; Jang, Aera ; Cho, Soohyun ; Seong, Pil-Nam ; Park, Beom-Young ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 337~349
DOI : 10.5536/KJPS.2013.40.4.337
The objective of this literature review is to prove that egg cholesterol is not related with heart disease based upon research results of the past 50 years. As a result, it was reported that the dietary intake cholesterol did not affected cholesterol levels in blood. Moreover, it was reported that adding two eggs a day to a healthful diet did not significantly increase blood cholesterol levels in young or middle-aged men and women with normal or even moderately elevated blood cholesterol levels. Cholesterol feeding studies demonstrate that dietary cholesterol increases both LDL and HDL cholesterol with little change in the LDL : HDL ratio as an important risk indicator of heart disease. Especially a good indicator in the elderly from increased HDL-cholesterol, so cholesterol intake appeared to be good for the prevention of heart disease. Thus the consumption of eggs is bad for your health is not known as a fact, but rather was found to be effective in preventing heart disease. Also, all consumers may consume without worrying because there are no official standards regarding egg intake. Therefore, these evidences would clear up some misunderstanding and mistrust on egg cholesterol regarding the consumption of egg as well as give some desirable advice on how to maintain healthy life.
Effect of Dietary Crude Protein and Amino Acid Contents on Growth Performance and Carcass Characteristics in Korean Native Ducks
Kwon, Hyung Joo ; Choo, Yun Kyung ; Oh, Sung Taek ; Kim, Hak Kyu ; Kang, Chang Won ; An, Byoung Ki ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 351~359
DOI : 10.5536/KJPS.2013.40.4.351
This study was undertaken to assess dietary crude protein (CP) and amino acid (AA) concentrations for growth performance and carcass characteristics in Korean native ducks. In a
factorial arrangement, 1-d-old Korean native male ducks were allotted to 6 dietary treatments in a completely randomized design. Experimental diets contained 23 or 21% CP with 1.31/1.09, 1.21/1.00, 1.11/0.91 and 1.11/0.91, 1.02/0.83, 0.92/0.75 AA (Lysine/Total sulfur amino acid, Lysine/TSAA), respectively, from 0 to 3 wk of age. From 4 to 8 wk of age, experimental diets had 19 or 17% of diet; each contained 1.00/0.79, 0.94/0.75, 0.88/0.71 and 0.88/0.71, 0.82/0.67, 0.76/0.63 AA (Lysine/TSAA), respectively. Each dietary treatment has 6 replicates and feed and water were provided ad libitum. Body weight (BW), feed intake and uniformity were measured at 3 wk and 8 wk and carcass characteristics were evaluated at 8 wk of age. As CP increased from 21 to 23%, the BW and BW gain significantly increased (P<0.05) during 0 to 3 wk of age. From 4 to 8 wk of age, BW, feed intake, BW gain, feed conversion rations (FCR) and uniformity were not different (P>0.05) between treatments. Carcass yield and relative weights of liver, spleen, right breast and leg per 100 of BW were not different (P>0.05) between treatments. The meat color, shear force value, cooking loss and pH were not affected by dietary treatments (P<0.05). Korean native ducks require relatively low levels of dietary CP and AA for late growth and carcass yield due to low daily weight gain. This suggests the possible differences in CP and AA needs between Korean native ducks and commercial breeds from foreign breeding companies, especially late growth stage.
Effects of Different Levels of Dietary Crude Protein on Egg Production and Quality in Laying Hens during Early Stage of Egg Production
Choo, Yun Kyung ; Kwon, Hyung Joo ; Oh, Sung Taek ; Kim, Yong Ran ; Kim, Eun Jib ; Kim, Dong Wook ; Kang, Chang Won ; An, Byoung Ki ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 361~368
DOI : 10.5536/KJPS.2013.40.4.361
This experiment was conducted to determine optimum levels of dietary crude protein for productivity and egg quality in laying hens during early stage. A total of seven hundred and twenty 24-wk-old Hy-Line Variety Brown layers were randomly assigned to 4 experimental diets varying with 16%, 17%, 18%, and 19% CP and fed the diets for 12 wks. There were no significant differences in egg production, daily egg mass and feed intake among experimental diets. Although no difference was found on egg weight among experimental diets, decreasing levels of dietary crude protein tended to reduce the egg weight. Haugh unit and egg shell quality were not affected by different levels of dietary crude protein. Although there was no difference on yolk color among experimental diets, increasing levels of dietary crude protein slightly reduced the yolk color. It is concluded that laying hens did not need more than 16% CP to maximize egg production.
A Comparison of Various Energy and Protein Concentrations in Diets on the Performance, Bone Mineral Density and Blood Characteristics of Broiler Chicks
Choe, Ho Sung ; Um, Jae Sang ; Ryu, Kyeong Seon ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 369~377
DOI : 10.5536/KJPS.2013.40.4.369
Two experiments were conducted separately with different concentration of dietary energy and protein to evaluate the performance, blood characteristics and bone mineral density (BMD) of broiler chicks. In experimentr 1, a total of 480 heads one-day-old Ross
Ross broiler chicks were randomly divided into 6 treatments (5 replications; 16 birds/pen). Three concentration of ME (3,000, 3,100 and 3,200 kcal/kg) and two of CP (pre-starter 22, 23%, starter 20, 21% and finisher 18, 19%) in a
factorial arrangement of treatments were used. In experiment 2, similar chicks and CP concentration was used but ME concentration was changed (pre-starter; 3,000, 3,050 and 3,100 kcal/kg, starter; 3,050, 3,100 and 3,150 kcal/kg, finisher; 3,100, 3,150 and 3,200 kcal/kg) in the diet. In both experiments, 10 blood and tibia samples were collected per treatment and blood characteristics and BMD were analyzed. In experiment 1, weight gain and feed intake were increased by the 3,000 kcal/kg ME in the diet (P<0.05). Serum total protein and albumin levels were increased numerically with the level of CP in the diet. Total cholesterol and HDL content were increased numerically with the energy content in the diet. Consistently in experiment 2, weight gain was increased numerically by the energy and protein level (prestarter
and finisher 3,100 kcal/kg ME and 19% CP) in the diet. Serum glucose level was increased with the energy level in the diet (P<0.05). Therefore, serum total protein, albumin, triglycerides, total cholesterol and HDL contents were tended to increase with the energy increments in the diet.
Epidemiological Studies of Avian Paramyxovirus Type 4 and 6 in Commercial Chicken Flocks in Korea
Lee, Hae Rim ; Koo, Bon-Sang ; Jeon, Eun-Ok ; Han, Moo-Sung ; Min, Kyung-Cheol ; Lee, Seung Baek ; Bae, Yeonji ; Choi, Kang-Seuk ; Shin, Jeong-Hwa ; Mo, In-Pil ;
Korean Journal of Poultry Science, volume 40, issue 4, 2013, Pages 379~388
DOI : 10.5536/KJPS.2013.40.4.379
Avian paramyxovirus (APMV) type 4 and 6 were isolated during an avian influenza (AI) surveillance program of wild birds. This study also conducted experimental infection of wild-bird-origin APMV type 4 and 6 in specific pathogen free (SPF) chickens to study pathogenicity and transmission within domestic flocks. In addition, serological prevalence data of APMV type 4 and 6 in domestic fowls was conducted with chicken sera collected from 2007 to 2009 in order to understand infection status. The results of the animal experiment showed that APMV type 4 and 6 had the ability to infect chickens with sero-conversion and to transmit the virus from infected birds to contacted birds, but showed low pathogenicity. Serological tests revealed that APMV type 4 was widespread in the poultry industry, especially in layer flocks, but the positive rate for APMV type 6 was very low. This study concluded that wild bird-origin APMV type 4 and 6 could infect the chickens by inter-species transmission and the seroprevalence of APMV type 4 was quite high in Korean poultry. However, since almost all the chicken flocks had a high level of antibody titer against APMV type 1, there was possibility of cross reaction between APMV type 1 and 4, which made the interpretations more complicated. In order to understand infection status in the natural environment, additional study is necessary regarding the seroprevalence of APMV type 4 and 6 in the wild bird population.