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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 38, Issue 4 - Dec 2011
Volume 38, Issue 3 - Sep 2011
Volume 38, Issue 2 - Jun 2011
Volume 38, Issue 1 - Mar 2011
Selecting the target year
The Effect of Stocking Density on the Behaviour of Broiler Chickens
Thomas, David G. ; Son, Jang-Ho ; Ravindran, Velmurugu ; Thomas, Donald V. ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 1~4
DOI : 10.5536/KJPS.2011.38.1.001
A 35-day trial was conducted to examine the influence of floor density on the behaviour of broiler chickens. Day-old male broilers (n=756) were randomly assigned to one of four stocking densities (6 replicates of n=13, 25, 38 and 50) in 24 identical 2.6
pens. These stocking densities were coded very low (VL), low (L), medium (M) and high (H) and contained a floor space allowance per bird of 2,000
, respectively. Scan sampling of all groups was carried out at 15-min intervals during two 1-h periods (10.00 h~11.00 h and 14.00 h~15.00 h) for five days each week. The numbers of birds engaged in different behavioural activities were recorded. It was found that the most common behaviour in all densities was lying. There was no clear effect of density during wks 1~4 of the trial, but in wk 5 birds in the L, M and H groups showed lower levels (P=0.07) of lying behaviour when compared to birds in the VL group suggesting that an increase in animal density results in decreased opportunities for undisturbed rest. This observation is supported by standing and walking behaviour, which was lower (P<0.05) in the VL group in wk 5. Foraging behaviour measured in the study by the numbers of birds pecking the ground declined as the trial progressed, but scratching increased in 2 wk then decreased. Birds in the VL group showed higher (P<0.05) level of pecking the ground behaviour compared to birds in the L, M and H groups, but scratching behaviour higher (P<0.05) and lower (P<0.05) in VL of 1 wk and 2 wk respectively. However, a peak in aggressive behaviour was observed in wk 2 and birds in the VL group showed less (P<0.05) agonistic behaviour than birds in the H and M groups. Other behaviours (dustbathing, preening, eating or drinking) were not influenced (P>0.05) by stocking density.
Multiple Maternal Origins of Korean Native Chicken Based on the mtDNA D-loop Variation
Cho, Chang-Yeon ; Lee, Pung-Yeon ; Ko, Yeoung-Gyu ; Kim, Hak-Kyu ; Park, Mi-Na ; Yeon, Seung-Hum ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 5~12
DOI : 10.5536/KJPS.2011.38.1.005
In this study, we analyzed the mitochondrial DNA D-loop region of Korean native chicken to clarify their phylogenetic relationships, possible maternal origin and routes of introduction into Korea. A 1231-1232 bp DNA fragment from the mtDNA D-loop region was sequenced in 315 chickens from 11 populations, Thirty-five variable sites that defined 21 haplotyes were observed. In Korean native chicken, diversity accounted for 90% of the variation, little differentiation among the strains. The 21 haplotypes clustered into 5 clades which were A, B, C, D and E. These results indicate that Korean chickens were derived from China with multiple origins.
Simultaneous Infection of Duck Hepatitis Virus and Salmonella typhimurium in Ducklings
Lee, Hae-Rim ; Koo, Bon-Sang ; Lee, Young-Ju ; Mo, In-Pil ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 13~19
DOI : 10.5536/KJPS.2011.38.1.013
In January 2010, high mortalities of ducklings occurred in two adjacent farms. Ducklings in farm A showed neurologic signs including paddling, opisthotonus and lameness, but ducklings from farm B had no specific clinical signs. At post mortem, diffused hemorrhagic spots in the liver and hemorrhages in the small intestine were observed in ducklings from farm A, and ducklings from farm B had only proventricular ulceration. Microscopically, multiple necrosis of hepatocytes, hyperplasia of the bile ducts, hemorrhages, infiltration of lymphocytes and bacterial colonies were commonly observed in the liver of ducklings from both farms. Also, type A and C duck hepatitis virus (DHV) were isolated from farm A and farm B, respectively and Salmonella typhimurium was commonly isolated and identified serologically and biochemically. To our knowledge, this is the first report about the co-infection of DHV and Salmonella typhimurium in ducklings, and co-circulation of type A and C duck hepatitis viruses in Korea.
Effect of Dietary Supplementation of Alisma canaliculatum (Alismatis Rhizoma) and Viscum album (Mistletoe) on Growth Performance and Immunity in Broiler Chickens
Kim, Ki-Soo ; Kim, Gwi-Man ; Ji, Hoon ; Park, Sung-Uk ; Yang, Chul-Ju ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 21~28
DOI : 10.5536/KJPS.2011.38.1.021
This study was conducted to investigate the effect of dietary supplement of Alisma canaliculatum and Viscum album on the growth performance and immune response of broiler chickens. One hundred and forty Ross broiler chicks (1 day old) were assigned to 4 treatments in 5 replications with 7 birds per replication. The dietary treatments were NC group (without antibiotics), PC group (basal + 50 ppm Oxytetracycline), AC group (basal + Alisma canaliculatum 0.5%), and VA group (basal + Viscum album 0.5%). The results revealed that body weight gain and feed intake were not significantly different among the treatments. Addition of AC to the diet showed significantly higher feed conversion ratios than the VA addition diet and other treatments (p<0.05). The concentration of linolenic acid,
-linolenic acid and arachidonic acid in the AC and VA treatment were relatively higher than that in the antibiotic treatment, while there was no difference in the concentration of SFA, USFA, and USFA/SFA. The serum IgG concentration in chickens tended to increase in the AC and VA treatment groups compared to NC group. The IL2 concentration in AC and VA groups was significantly higher than in other group (p<0.05). IL6 was not detected, however. GOT, GPT, and T-billirubin in the VA group were significantly higher than in other groups (p<0.05). Thus, the VA additives can result in the damage of liver and kidney. In conclusion, the dietary supplement of a 0.5% of AC and VA showed a similar growth performance and increased immunity response comparable to supplementing a 50 ppm Oxytetracycline. Therefore, it can be said that the AC and VA are possible alternates of antibiotics.
Effects of Levels of D Lite Supplementation on Growth Performance, Nutrient Digestibility, Characteristics and Quality of Meats in Broilers
Kim, Jin-Soo ; Kim, Young-Woo ; Kim, Kwang-Hyun ; Kwon, Il-Kyung ; Chae, Byung-Jo ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 29~35
DOI : 10.5536/KJPS.2011.38.1.029
An experiment was conducted to investigate the effects of dietary supplementation of a silicate mineral (D Lite) on growth performance, nutrient retention, carcass characteristics and meat quality in broiler chicks. A total of 640 broiler chicks were randomly allotted to four dietary treatments in a randomized complete block design. Each treatment had four replicates comprising 40 broilers in each replicate. Dietary treatments were as follows: control (0% D Lite), and diets supplemented with 0.15%, 0.30% and 0.45% of D Lite. The starter and finisher diets were fed from d 0 to 21 and d 21 to 35, respectively. Body weight gain during starter (p<0.05), finisher (p=0.057) and overall (p<0.001) experimental period and feed intake (p<0.05) during starter period decreased quadratically with increasing dietary D Lite levels. The birds fed 0.15% D Lite showed the greatest (p<0.05) overall weight gain, feed intake and retention of gross energy and calcium. There were no differences (p>0.05) in carcass characteristics, organ weights and breast meat composition. However, as the level of D Lite was increased in the diet there was a linear decrease in the TBARS values of breast meat (p<0.05) at d 12 of storage. These results suggest that D Lite supplementation at the level of 0.15% is shown to be effective in improving performance and nutrient retention in broilers.
A Study on the Utilization of Dietary [15N]urea in Cecal Ligated Chickens
Son, Jang-Ho ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 37~43
DOI : 10.5536/KJPS.2011.38.1.037
The effect of cecal ligation on the utilization of dietary [15N]urea in chickens fed 5 % protein diet plus urea were investigated. Nitrogen balance and utilization tended (P<0.01) to increase by cecal ligation. Total uric acid excretion was significantly decrease by (P<0.01) cecal ligation in chickens from origin of diet and urea (P<0.01). Excretion of ammonia was increased in chickens from origin of diet, where as it decreased in chickens an urea diet (P<0.01). Amount of urea nitrogen excretion from origin of urea was significantly decrease (P<0.01) by cecal ligation, but cecal ligated chicken fed 5% protein diet with urea showed 51.6% urea utilization. Result obtained in present study indicates that ceca is having beneficial role for urea utilization in chicken fed protein deficient diets, but ceca do not always positive role for nitrogen utilization.
Multisystemic Aspergillosis with Granulomas in Layer Chickens
Kim, Ji-Ye ; Kim, Jong-Man ; Mo, In-Pil ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 45~50
DOI : 10.5536/KJPS.2011.38.1.045
A case of aspergillosis in 39-day-old layer chickens having a history of gradual emaciation and subsequently death with nervous signs such as torticollis and lack of equilibrium was documented. Based on the results from serology and polymerase chain reaction (PCR) test, this flock was not affected with known viral or bacterial diseases. On postmortem examination of the affected birds, multiple white to yellow nodules measuring 1~5 mm in diameter were observed in the lungs, cerebrum, liver and kidney. Microscopically, these nodules were identified as granulomatous lesions characterized by mixed population of multinucleated giant cells and lymphocytes. By periodic acid-schiff staining and nucleotide sequencing analysis, Aspergillus flavus with characteristic septate and branched hyphae were identified in the granuloma of lung and cerebrum. This case was a chronic and multisystemic aspergillosis specialized to central nervous system caused by Aspergillus flavus infection in the layer flocks.
Effects of Dietary Supplementation of Pine Needle Powder on Carcass Characteristics and Blood Cholesterol Contents of Broiler Chicken
Kim, Young-Jik ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 51~57
DOI : 10.5536/KJPS.2011.38.1.051
This study was conducted to investigate the effects of supplementation diets of pine needle powder on performance, proximate composition, carcass characteristics, blood cholesterol concentration, TBARS (thiobarbituric acid reactive substance), WHC (water holding capacity), and shear force of chicken meat. Broiler chicks were fed diets for five weeks containing 0% pine needle powder (Control), 0.3% pine needle powder (T1), 0.6% pine needle powder (T2), and 0.9% pine needle powder (T3). Performance was no significant difference among treatment groups, but mortality was decreased in diets by the supplementation of pine needle powder than that of T1 and control. The moisture, crude protein, crude fat, and crude ash were no significant difference. The liver weight and abdominal fat was significantly decreased by the supplementation of pine needle powder compare to the T1 and control (P<0.05). The total cholesterol and LDL-cholesterol concentration of control was higher than treatment groups, and the HDL-cholesterol concentration and glucose of control was lower than treatment groups (P<0.05). The TBARS value was significantly decreased by the supplementation of pine needle compared to the control (P<0.05). In conclusion, these data indicate that 0.6% pine needle powder supplementation (T2) was most effective in decreasing mortality, total cholesterol and LDL-cholesterol and increasing HDL-cholesterol concentration.
Effect of Supplementary Actinomycetes (Nocardia sp. CS682) Ferment on the Laying Performance, Blood Parameters, Immunoglobulin and Small Intestinal Microflora Contents in Laying Hens
Rhee, Ah-Reum ; Shin, Dong-Hun ; Kim, Chan-Ho ; Jung, Byoung-Yun ; Yoo, Jin-Chul ; Hong, Young-Ho ; Paik, In-Kee ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 59~69
DOI : 10.5536/KJPS.2011.38.1.059
This study was conducted to investigate the effects of dietary supplementation of CS682, a fermentation product of Actinomycetae(Nocardia sp. CS682), and its commercial product DSC682
on the performance, blood parameters, intestinal microflora, and immune response in laying hens. Hy-Line Brown
laying hens were housed in two bird cages. Feeding trial lasted 5 wk under 16.5 h:7.5 h(L:D) lighting regimen. In Exp.1, a total of 480 birds of 86 wk old were assigned to four dietary treatments: Control, Antibiotics (6 ppm avilamycin), CS682-0.1 (CS682 0.1%) and CS682-1.0 (CS682 1.0% supplementation). Each treatment was replicated five times with 24 birds (or 12 cages) per replication. In Exp. 2, a total of 1,000 birds of 26 wk old were assigned to five dietary treatments: Control, Antibiotics (6 ppm avilamycin), DCS682-0.05 (DCS682 0.05%), DCS682-0.1 (DCS682 0.1%), DCS682-0.2 (DCS682 0.2% supplementation). Each treatment was replicated five times with 40 birds (or 20 cages) per replication. In Exp. 1, there were no significant differences among treatments in egg production, egg weight, broken & soft egg production, feed intake, and feed conversion ratio. Also, there were no significant differences among treatments in eggshell thickness, eggshell color and Haugh unit. However, eggshell strength was significantly (p<0.05) greater in CS682 and Antibiotics treatments than Control, and egg yolk color was significantly (p<0.05) higher in CS682-1.0 than Control. In Exp. 2, feed intake was significantly (p<0.05) lower in DSC682-0.05 than Control. Lightness(L) of Hunter Lab color of eggshell of DCS and Antibiotics treatments was significantly (p<0.05) lower than Control. Egg yolk color of DCS 0.1 and 0.2 treatments was significantly (p<0.05) higher than Control. Haugh unit increased significantly (p<0.05) in Antibiotics and DCS682-0.1 treatments. The immunoglobulin levels of plasma (IgG and IgA) and eggyolk (IgY) were not significantly affected by treatments. Antibiotics and CS682 or DCS682 treatments significantly (p<0.05 or 0.01) influenced some of the erythrocytes and leukocytes parameters in blood. In Exp.1, mean corpuscular volume (MCV) decreased by CS682 treatments and mean corpuscular hemoglobin (MCH) was highest in Antibiotics treatments. In Exp.2, the level of monocyte (MO) decreased in DCS682-0.10 and 0.20 treatments. The cfu of C. perfringens and S. typhimurium in small intestinal content were highest in Control and lowest in Antibiotics in both experiments. In Exp. 2, DSC682-0.05 and -0.1 treatments were highest and Antibiotic treatment was lowest in Lactobacilli spp. The results of the present layer experiments indicated that supplementation of 0.1~0.2% CS682 or DCS682 may increase eggshell strength, color of eggshell and eggyolk, Haugh unit, and control harmful intestinal microbes.
Effect of Supplementary Actinomycetes (Nocardia sp. CS682) Ferment on the Performance, Blood Parameters, Immunoglobulin and Small Intestinal Microflora Contents in Broilers
Rhee, Ah-Reum ; Shin, Dong-Hun ; Kim, Chan-Ho ; Jung, Byoung-Yun ; Yoo, Jin-Chul ; Hong, Yong-Ho ; Paik, In-Kee ;
Korean Journal of Poultry Science, volume 38, issue 1, 2011, Pages 71~80
DOI : 10.5536/KJPS.2011.38.1.071
This study was conducted to investigate the effects of dietary supplementation of CS682, a fermentation product of Actinomycetae Nocardia sp. CS682, and DCS682
, a commercial product, on the performance, blood parameters, small intestinal microflora, and immunoglobulin contents in broilers. In Exp. 1, a total of 240 ROSS
broiler chickens of 1d old were assigned to six dietary treatments: Control, Antibiotics (6 ppm avilamycin), CS682-0.25 (CS682 0.25%), CS682-0.50, CS682-0.75 and CS682-1.00. There were significant (p<0.05) differences among treatments in feed conversion. The CS682-0.25 treatment was significantly (p<0.05) lower than Antibiotics and other CS682 treatments in 0~2 wk feed conversion. The CS682 treatments influenced MCV (mean corpuscular volume) in blood. The cfu of Escherichia coli in small intestinal content was lowest in Antibiotics treatment followed by CS682 treatments and Control. In Exp. 2, a total of 1,000 ROSS
broiler chickens of 1 d old were assigned to five dietary treatments: Control, Antibiotics (6 ppm avilamycin), DCS682-0.05 (DCS682
0.05%), DCS682-0.10 and DCS682-0.20. There were significant differences (p<0.05) among treatments in mortality. The DCS682-0.20 treatment was lower than DCS682-0.10 in 0~3 wk and lower than Control in 0~5 wk mortality. Antibiotics treatment was lowest in all microbial population in small intestinal content. The cfu of E. coli and Salmonella typhimurium of DCS682 treatments were higher than Antibiotics treatment but lower than the Control. The results of present broiler experiments indicated that supplementation of 0.20~0.25% CS682 and DCS682, improve feed conversion, mortality and control harmful intestinal microbes.