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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
Editor in Chief :
Volume & Issues
Volume 36, Issue 4 - Dec 2009
Volume 36, Issue 3 - Sep 2009
Volume 36, Issue 2 - Jun 2009
Volume 36, Issue 1 - Mar 2009
Volume 35, Issue 4 - Jan 2009
Selecting the target year
Effect of Stocking Density on Chicken Meat Grades and PSE Incidence in Broiler House with or without Window
Chae, H.S. ; Kang, H.S. ; Yoo, Y.M. ; Jang, A. ; Jeong, S.G. ; Ham, J.S. ; Ahn, C.N. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 1~7
DOI : 10.5536/KJPS.2009.36.1.001
This study was performed to evaluate the effect of the level of stocking density of housing with or without window on chicken meat quality. The incidence of
grade of whole chicken housed with window significantly influenced by stocking density. The incidence of
grade chicken at high stocking density (
/head), standard stocking density (
/head), and low stocking density (
/head) was 26, 52, and 66%, respectively. Breast muscle of chicken housed with window and with low stocking density showed higher incidence of
grade than high stocking density. Also minor and severe PSE (pale, soft, extractive) incidence of chicken meat were showed 4% each, while the
grade chicken was not appeared at low density. In chicken thigh, the incidence rate was not affected by stocking density. In chicken housed without window, the incidence of
grade chicken in high, standard, and low stocking density was 18, 8, and 46%, respectively. Also, the incidence of
grade chicken breast was 2.6 times higher than the chicken in low stocking density. However, incidence of
grade thigh was not affected by the stocking density. These results suggest that high stocking density significantly reduced the incidence of
grade chicken meat regardless of housing with or without window.
Effect of Transportation Distance of Broilers on Meat Grades and PSE Incidence
Chae, H.S. ; Yoo, Y.M. ; Jeong, S.G. ; Ham, J.S. ; Ahn, C.N. ; Kim, D.H. ; Jang, A. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 9~14
DOI : 10.5536/KJPS.2009.36.1.009
This study was conducted to evaluate the effect of three types of transportation distance (short: less than 40 km; intermediate: 70~80 km; long: 140~150 km) on quality of whole chicken and chicken meat cuts. In whole chicken,
grade chicken incidence after transportation of short, intermediate, and long distance transportation was 61.3, 56.3, and 43.8%, respectively. Bruise was not shown in breast and thigh, while wings with bruise after short and long distance transportation were 16.7% and 27.3%, respectively. For chicken meat cuts,
grade chicken breast incidence after short distance transportation was 14% higher than that after long distance transportation. Bruised chicken breast after short and long distance transportation were 10 and 12%. Pale, soft, and exudative (PSE) chicken breast incidence after long distance transportation was higher (18.3%) than that after short distance transportation (7.0%). Chicken thigh cuts with
grade after short and long distance transportation were shown 91.2% and 88.3%, respectively. Also, chicken wing cuts showed similar result to chicken thigh cuts` and
grade incidence of chicken wings after short distance transportation was 11% higher than that of after long distance transportation. These results suggest that shorter transportation distance from farm to slaughter house result in high grade whole chicken and chicken meat cuts.
Effects of Corn Distiller`s Dried Grains with Solubles on Production Performance and Economics in Laying Hens
Rew, H.J. ; Shin, M.H. ; Lee, H.R. ; Jo, C. ; Lee, S.K. ; Lee, B.D. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 15~21
DOI : 10.5536/KJPS.2009.36.1.015
A 10-wk layer feeding trial was conducted to investigate the effects of high quality corn distiller`s dried grains with solubles (DDGS) on performance, egg qualities, and yolk fatty acid composition. The economics of using DDGS in the Korean situation was also analyzed. A total of 216 Hy-line Brown layers, 23-wk of age, were employed in this trial consisting of three dietary treatments (0%, 10%, and 20% DDGS), and six replicates per treatment. All experimental diets were prepared as iso-protein (17%) and iso-calorie (2,780 kcal/kg). The use of DDGS up to 20% in layer diets did not affect the feed intake, laying rate, egg weight, and feed conversion ratio (P>0.05). At 5th and 10th wk of the trial, the eggshell color, albumen height, and Haugh unit were not influenced by the DDGS supplementation. At 5th wk of the trial, the eggshell qualities, like eggshell weight, eggshell thickness, and eggshell strength, were not affected by the DDGS feeding; however, these eggshell qualities were decreased at 10th wk due to the 20% DDGS feeding (P<0.05). Yolk color of DDGS 20% increased compared to DDGS 0% at 5th and 10th wk of the trial (P<0.05). At 10th wk, yolk/egg ratio of DDGS 20% decreased compared to DDGS 0% (P<0.05). The yolk fat content was not changed due to DDGS feeding. The monounsaturated fatty acid content of yolk decreased linearly by feeding DDGS (P<0.05). The yolk polyunsaturated fatty acid content of DDGS 20% increased significantly compared to DDGS 0%. The DDGS feeding was not found to affect the degree of yolk fat unsaturation. The cost of feed (￦/kg feed) decreased as the level of DDGS increased. The production costs of egg (￦/kg egg) were cheap in the order of DDGS 10%, DDGS 20%, and DDGS 0%, indicating that DDGS is a viable alternative feed ingredient to corn and soybean meal. In conclusion, high quality DDGS (
61.72) could be used economically up to 20% level without any harmful effect on laying performance: however, the use of DDGS up to 10% is more economical than DDGS 20%.
Effect of Protein and Energy Levels on Performance and Carcass Rate in Cross Bred Chicks
Na, J.C. ; Park, S.B. ; Bang, H.T. ; Kang, H.K. ; Kim, M.J. ; Choi, H.C. ; Seo, O.S. ; Ryu, K.S. ; Jang, H.K. ; Choi, J.T. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 23~28
DOI : 10.5536/KJPS.2009.36.1.023
The experiment were protein and metabolizable energy level in performance and carcass rate in cross bred chicks. One day old, 720 male and female cross bred chick were used for the experiments, and 20 chicks were placed at each pen. The energy level of feed was maintained about 2,950, 3,000, 3,050 kcal/kg, and protein content was adjusted about 19, 20, 21% from 0 to 5 weeks and energy level was maintained about 3,100, 3,150, 3,200 kcal/kg, and protein content was adjusted about 17, 18, 19% from the 6 to 10 weeks old of the experiment. At the whole time, ME 3,100 (2,950), 3,150 (3,000) and 3,200 (3,050) kcal/kg treatment groups was not significant difference in weight gain, feed intake, but 3,150 (3,000), 3,200 (3,050) kcal/kg treated groups revealed to show improved feed conversion rate than the group treated with ME 3,100 (2,950) kcal (P<0.05). And CP 17 (19), 18 (20), 19 (21)% treatment groups did not significant difference weight gain and feed intake but CP 19 (21)% treated group wan significant difference feed conversion rate than the CP 17 (19)% treated group (P<0.05). ME level of 3,100 (2,950), 3,150 (3,000), 3,200 (3,050) kcal/kg treatment groups in carcass rate and abdominal fat rate was not signficant difference and protein of 17 (19), 18 (20), 19 (21)% treatment groups after end of experiment. Between ME and CP of dietary was significant appeared to interact at 6~10 weeks (P<0.05).
Effects of Dietary Chitosan Supplementation with Chitosan Feeding Levels and Feeding Forms on Growth Performance and Carcass Characteristics of Thigh Muscular in Broiler
Kim, Y.J. ; Kim, B.K. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 29~37
DOI : 10.5536/KJPS.2009.36.1.029
This study was conducted to determine the effects of dietary supplementation with chitosan feeding levels and feeding forms on the performance, proximate composition, pH, thiobarbituric acid reactive substance (TBARS), water holding capacity (WHC), shear force, meat color, and fatty acid of chicken thigh meat. Two hundred broilers (Arbor Acre Broiler, male) were randomly assigned to five groups and were fed for five weeks and slaughtered. Thigh muscle was evaluated in this experiment. The amounts of proximate composition, crude fat of control and T3 for the chitosan-treated groups were significantly higher as compared with T2 (P<0.05), but no significant effects were detected on moisture, crude protein, and crude ash. By comparison, pH was significantly increased when chitosan was included at 2% into diet or more than 1% into drinking water. TBARS was significantly lower at chitosan treated groups it was decreased with increasing chitosan level in the diets (P<0.05). Therefore, chitosan had the possibility to improve shelf life of chicken meat. Higher chitosan levels and feeding additive increased high density lipoprotein cholesterol (HDL-C) and reduced total cholesterol and low density lipoprotein cholesterol (LDL-C) (P<0.05).
of chitosan treated group was higher than the control. As the dietary chitosan levels increase, the composition of palmitic acid and oleic acid levels was increased, however, those but the rates of linoleic acid and arachidonic acid were decreased. It is concluded that dietary chitosan has a positive effect on increasing HDL-C and oleic acid and decreasing total-C, LDL-C and TBARS values. Therefore, the treatment with the most significant effects in the current study was the high level of chitosan.
Effect of Dietary Supplementation of Acanthopanax senticosus and Eucommiaceae on the Expression of Lipogenic, Myogenic and Antioxidant Enzyme Genes in Broiler Chickens
Kang, H.K. ; Beloor, J. ; Sohn, S.H. ; Jang, I.S. ; Moon, Y.S. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 39~45
DOI : 10.5536/KJPS.2009.36.1.039
This study was carried out to investigate the effect of dietary supplementation of Acanthopanax (A) senticosus and Eucommiaceae on the expression of lipogenic, myogenic and oxidative stress genes in broiler chickens. Birds were subjected (assigned) to one of the following 5 dietary treatments: control (CON), A. senticosus 0.5% (T1), 1.0% (T2), Eucommiaceae 0.5% (T3) and 1% (T4). Each treatment was replicated 8 times with 4 birds per replication, housed in 4 birds per cage. Birds were arranged according to randomized block design. Feeding trial was conducted from day 4 to 35th day of age. Liver and muscle tissues were collected for analysis. Broilers subjected to 1% A. senticosus had higher feed conversion ratio than the other treated birds whereas no significant differences were found in body weight, weight gain and feed intake. The gene expression levels of fatty acid synthase were not different among the treatments while the transcription factor
was highly expressed in Eucommiaceae but not in control and A. senticosus. The gene expression levels of myogenin were high in both A. senticosus and Eucommiaceae compared to control group. MyoD also showed high expression in treated groups furthermore, Eucommiaceae stimulated the expression of MyoD more than that of A. senticosus. The antioxidant gene expressions (SOD, CAT, SOD, GPX) generally were not much different among the treatments, however, SOD and GPX were stimulated in broilers consumed 1% Eucommiaceae diet. The result of this experiment showed that dietary supplementation of A. senticosus and Eucommiaceae in broiler may improve the antioxidant defence system through SOD and GPX without affect of growth performance in broilers.
Effects of Spider-Derived Protease (Arazyme
) Supplementation of Corn-Soy Diets on the Performance in Laying Hens at the Late Production
Kim, J.U. ; Kim, J.Y. ; Kim, J.S. ; Lee, B.K. ; Lee, S.Y. ; Lee, W.S. ; You, S.J. ; Ahn, B.K. ; Kim, E.J. ; Park, H.Y. ; Son, K.H. ; Shin, D.H. ; Kang, C.W. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 47~55
DOI : 10.5536/KJPS.2009.36.1.047
This study was carried out to investigate the effects of spider-derived protease [Arazyme (AZ)] supplementation on egg production, egg quality, cecal microflora and viscosity of intestinal contents in laying hens at the late production. A total of two hundred, 59-wks-old, Hy-Line Brown layers were divided into four groups, placed into 5 replicates per group (50 birds per group) and fed one of four diets containing 0.05, 0.075 or 0.1% AZ or control for 5 wks. The results showed that egg weight in group fed the diet containing 0.05% AZ was significantly higher than those of other groups (P<0.05). There were no significant differences in egg interior and eggshell qualities among the groups. The serum parameters such as total cholesterol, the levels of GOT and GPT were not influenced by AZ feeding. There were no significant differences in the cecal number of total microbes, Coliforms and lactic acid bacteria among the groups. The viscosity and ammonia concentration of intestinal contents in the groups fed AZ were significantly reduced compared to those of the control (P<0.05). In conclusion, laying hens fed AZ supplemented diet improved egg weight as compared with that of control. In addition, the AZ supplemented diet reduced the viscosity and ammonia concentration of intestinal contents, reflecting a significant feed enzyme effect.
Effects of Dietary Various Energy and Protein Levels on Productivity, Blood Composition and Meat Quality in Cross-Bred Chicks
Jeong, Y.D. ; Youn, M.J. ; Ryu, M.S. ; Ryu, K.S. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 57~67
DOI : 10.5536/KJPS.2009.36.1.057
These studies were conducted to investigate the various dietary CP and ME feeding effect on productivity, blood composition and meat quality in cross bred chicks. Seven hundred twenty one day old cross bred chicks (Hanhyup Samho) were alloted to the floor pen for early starting (0~2 weeks), starting (3~5 weeks), growing (6~8 weeks), finishing period (9~10 weeks). Dietary ME and CP were 3,000, 3,100 kcal/kg, and 22% for early starting period, 19, 20, 21% for starting period, 18, 19, 20% for growing period, 17, 18, 19% for finishing period. Weight gain and feed consumption were weekly measured and feed conversion ratios were calculated. Blood and breast meat were collected at the end of experiment. Birds fed ME 3,100 kcal/kg diets improved significantly compared with others for the first two weeks (P<0.05). Feed conversion was statistically improved in CP (22)21% treatment relative to that of CP (22)20% from three to five weeks of age. No difference were found from 6 to 8 weeks of age. Weight gain and feed conversion also improved in ME 3,100 kcal/kg treatments, but feed intake decreased significantly in CP (
)19% treatment for the rest of experimental period (P<0.05). There was interaction between ME and CP for the first five weeks (P<0.05). Blood total protein showed higher in ME 3,100 kcal/kcal treatment than ME 3,000 kcal/kg (P<0.05). There were no differences in albumin, total cholesterol and glucose, but CP (
)18 treatment showed higher glucose than other treatments (P<0.05). Cooking loss, tenderness and water holding capacity were not different. However, pH was dependent on dietary ME, CP and existing the interaction between ME and CP treatments (P<0.05). As the results of this experiment, ME and CP were confirmed the 3,000 kcal/kg, 22% for the first two weeks 3,100 kcal/kg, 21% from three to five weeks of age, 3,100 kcal/kg, 18% for the growing period, 3,100 kcal/kg, 17% for the rest of period. However, further research would be required to confirm more optimum dietary nutrition for cross bred chicks.
Effect of Different Packaging Methods on the Quality and Storage Characteristics of Domestic Broiler Breast Meat during Cold Storage
Yang, H.S. ; Jeong, J.Y. ; Choi, Y.H. ; Joo, S.T. ; Park, G.B. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 69~75
DOI : 10.5536/KJPS.2009.36.1.069
The effects of different packaging methods such as aerobic, vacuum, and wrap packaging, on quality characteristics of fresh chicken breast meat during cold storage were investigated. The results show that crude fat content in aerobic packaging method was significantly (P<0.05) higher compared to the others, whereas moisture, protein and ash contents were not significantly different. pH in wrap packaging was increased with storage time and reached the highest values at 10 days. Both lightness and redness of the meat were increased with storage time, but lightness was significantly (P<0.05) higher in wrap packaging than in the others. Thiobarbituric acid (TBA) and volatile basic nitrogen (VBN) values were increased in all treatments at 10 days. VBN at 5 days were over 20 mg%, and TBA values at 10 days were between 0.82~1.05 mg malondialdehyde/kg meat. TBA showed significantly (P<0.05) lower in vacuum packaging compared to the other methods. Therefore, our results suggested that vacuum packaging decreases lipid oxidation of chicken breast meat, thereby enhancing the shelf life, compared to aerobic and wrap packaging methods.
Effects of Dietary Green Tea on Meat Quality and Physico-chemical Properties of Broiler during Cold Storage
Jeong, J.Y. ; Kim, G.D. ; Jung, E.Y. ; Hwang, Y.H. ; Kim, S.H. ; Kang, K.H. ; Choi, Y.H. ; Joo, S.T. ; Park, G.B. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 77~84
DOI : 10.5536/KJPS.2009.36.1.077
The objective of the study was to investigate the effects of dietary green tea on chicken meat quality and fatty acid content. Broilers were fed one of the four dietary treatments containing 0, 0.5, 1 and 3 % green tea for 10 days. Crude moisture, crude fat, crude ash, pH, meat color (CIE
) and fatty acid composition were measured in chicken breast meat during cold-storage. Crude fat did not differ significantly among treatments. Dietary green tea increased the amount of unsaturated fatty acids and decreased that of saturated fatty acids in chicken meat, resulting in increased ratios of unsaturated fatty acids to saturated fatty acids. The amount of linoleic acid (18:2) and linolenic acid (18:3) was increased with increasing dietary green tea. Lightness (
), pH, TBARS, VBN, and total plate count were not significantly different during storage. Dietary green tea did not affect storage properties of chicken meat. The results of this study imply that dietary with green tea may have positive effects on chicken meat quality.
Single Nucleotide Polymorphism Analysis of the COI Gene in Korean Native Chicken
Jin, S.D. ; Seo, D.W. ; Sim, J.M. ; Baek, W.K. ; Jung, K.C. ; Jang, B.K. ; Choi, K.D. ; Lee, J.H. ;
Korean Journal of Poultry Science, volume 36, issue 1, 2009, Pages 85~88
DOI : 10.5536/KJPS.2009.36.1.085
One of the mitochondrial genes, called cytochrome c oxidase I (COI), has been widely used for the species identification (called bio-barcode) in birds. In this study, the bio-barcode has been applied to chicken breeds in Korea whether it also can be used as a molecular marker for breed identification. Data indicated that Korean native chicken has the mixed SNP (single nucleotide polymorphism) patterns between White Leghorn (Layer) and Cornish (Broiler) and ultimately, it can not be used as the marker for breed identification. However, this result indicates the mixed use of the Korean native chicken, since it has been used for dual purpose for producing meat and egg for a long time. In order to use as a marker for species identification, more reliable mitochondrial and/or nuclear DNA markers need to be developed.