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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Poultry Science
Journal Basic Information
Journal DOI :
The Korean Society of Poultry Science
Editor in Chief :
Volume & Issues
Volume 32, Issue 4 - Dec 2005
Volume 32, Issue 3 - Sep 2005
Volume 32, Issue 2 - Jun 2005
Volume 32, Issue 1 - Mar 2005
Selecting the target year
Effects of Dietary Supplementation of Loess on the Performance and Meat Quality of Broiler Chicks
Choi I. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 1~7
This study was carried out to estimate the effects of loess (
) on the growth performance, meat quality, and blood composition of broiler chicks. A total of 320 broiler chicks at 1 day of age were divided into 4 groups to feed basal diet (control) and basal diet plus
loess respectively for 6 weeks. The body weight gain and feed conversion rate were not significantly different among the groups. The contents of moisture and crude fat of meats were significantly different in treatments when compared to that of the control group (P<0.05), but did not show any differences among the groups. The pH values of meats were not different among the treatments. However, water holding capacity was higher in all treated groups than the control. The L of meat color was also increased in all treated groups, but a and b of meat color were not different among the groups. In addition, the contents of unsaturated fatty acid content of meat were higher in the treated groups than the control. The concentrations of HDL cholesterol and triglyceride were significantly lower in all treated groups than the control (P<0.05). Finally, the contents of moisture of excreta were significantly lower in all treated groups than control (P<0.05). Taken together, it was concluded that loess did not improved the growth performance, but had effects on the improvement of meat quality.
Effects of Bacillus subtilis Supplementation on Egg Quality, Blood Characteristics and Fecal
in Laying Hens
Kim H. J. ; Woo J. S. ; Kwon O. S. ; Min B. J. ; Shon K. S. ; Jo J. H. ; Chen Y. J. ; Kim I. H. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 9~14
This study was conducted to investigate the effects of Bacillus subtilis on the egg qualify, blood characteristics and fecal
in laying hens. A total of two hundred fifty two laying hens were randomly allocated into three treatments with seven replications for six weeks. Dietary treatments included 1) CON (control; basal diet), 2) BS0.2(control +
Bacillus subtilis) and 3) BS0.4 (control +
Bacillus subtilis). For overall Period, hen-day egg production tended to increase by the Bacillus subtilis
in the diets, but was no significant difference. Egg weight, egg shell breaking strength, egg shell thickness, Haugh Unit, yolk color unit and egg yolk index were not affected by treatments. Difference of egg weight and egg shell breaking strength in the BS0.2 treatment tended to increase without significant difference. Difference of egg yolk index in laying hens fed Bacillus subtilis was increased (P<0.05). The concentrations of red blood cell (RBC) and white blood cell (WBC) were not significant difference.
concentration in feces with BS0.4 treatment was significantly (P<0.05) lower than control. In conclusion, dietary Bacillus subtilis could decrease fecal
Effect of Microbial Phytase in Low Phosphorus and Calcium Level Diet on the Performance and Nutrient Digestibility in Laying Hens
Min B.J. ; Kwon O.S. ; Lee W.B. ; Son K.S. ; Hong J.W. ; Yang S.J. ; Moon T.H. ; Kim I.H. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 15~21
This Study was conducted to investigate the effects of microbial phytase in low phosphirus and calcium level diet on the performance and nutrient digestibility in laying hens. One hundred ninety two, 50 wks old, ISA brown commerical layers were used for 12 weeks feeding trial after 7-d adjustment period. Four dietary treatments included CON(control; Co.), P2 (
Natuphos, BASF) and P3 (
PHOSMAX, GENOFOCUS). Ca and available P concentrations of P1, P2 and P3 were 90 and
of NRC recommecdations to accentuate difference in response to phytase availability. In whole period, egg production was not affected by treatments. At 12 weeks, egg weight was significantly increased in adding phytase treatments (P<0.05). Egg shell thickness was increased in P1, P2 and P3 treatments compared with control (P<0.05) at 9 weeks. Ca concentration of serum tended to decrease in P1 treatment without significant difference (P>0.05). Ca and P concentrations of tibia were higher in layers fed dietary phyrase than those fed control diet without significant difference (P>0.05). Digestibilities of DM, N and ash were improved in P1 treatment compared with P2 and P3 treatments (P<0.05). Ca and P digestibilities were the highest in P2 treatment (P>0.05), but was not significant difference between control and P1 treatments.
Identification of Upregulated APOA1 Protein of Chicken Liver in Pullorum Disease
Jung K. C. ; Lee Y. J. ; Yu S. L. ; Lee J. H. ; Jang B. K. ; Koo Y. B. ; So H. K. ; Choi K. D. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 23~27
The aim of this study was to investigate differentially expressed proteins between normal chicken liver and chicken liver inffeted by Salmonella pullorum. 2-dimensional electrophoresis (2DE) and mass spectrometry (MS) were used to identify the proteins. More than 300 protein spots were detected on silver stained 2DE gels using pH 3
10 gradients. The most outstanding protein spot was further analyzed by MALDI-TOF MS and protein database using the Mascot search engine. The protein was finally identified as APOAI (Apolipoprotein AI). Based on the known function of the APOAI, this gene acts protective action against the accumulation of platelet thrombin at the site of vascular damage for the pullorum disease. Therefore APOAI protein, identified in this study, can be a valuable biomarker in relation to the pullorum disease in chicken.
Characteristics and Improving Breed of Economic Traits of Korea Native Chicken
Oh J. D. ; Park M. H. ; Kong H. S. ; Lee H. K. ; Jeon G. J. ; Yeon S. H. ; Sang B. D. ; Choi C. H. ; Cho B. W. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 29~34
This study was conducted to estimate the effects of genotype for chicken major histocompatibility complex (MHC) B-LB genes on economic traits. To detect polymorphism, 400 bp fragments of MHC B-LB genes were obtained and sequenced. After digestions using restriction enzyme Hea III, two restriction enzyme sites were observed. There were two mutations at position 427 and 651 those were decided as Type I and Type II, respectively. Using RFLP analyses, type I were genotyped to TT, TC and CC, and type II to MM, Mm and mm. The relatively higher TC genotype frequencies (0.8) of Type I and Mm genotype frequencies (0.88) of Type II were observed in Korean native chickens. The effects of the genotype on 150 days body weight trait were investigated by the associations of CC and Mm genotypes (P<0.05) in Korean native chickens. This result suggests that a significant association exists between the SNP and 150 days body weight.
Effect of Dietary Supplementation of CLA-Containing Oil (CLAzen 80) on fatty Acid Composition of Egg Yolk in Laying Hens
Hwangbo J. ; Chang J. S. ; Chung I. B. ; Lee B. S. ; Kim D. U. ; Cho S. B. ; Kim H. D. ; Bae H. D. ; Son J. H. ; Hong U. C. ; Choi N. J. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 35~41
The objectives of the present study were to investigate the effects of varying levels of dietary oil containing conjugated linoleic acid (CLA) on the egg production and fatty acid composition of egg yolk. Seventy-two 59-wk-old ISA Brown laying hens were randomly allotted to four dietary treatments, each consisting of three replicates with six birds per replicate. There were four treatments that consist of diets containing 0, 1, 2, or
commercial CLA-containing oil. Egg production was not significantly different among the dietary treatments at 0, 2, 4, and 6 week. The proportion of saturated fatty acids such as C16:0 and C18:0 in egg yolk were increased, but that of monounsaturated fatty acid C18:1 was decreased by feeding CLA-containing oil supplementation. However, the proportion of polyunsaturated fatty acids such as C18:2 and C18:3 in egg yolk were not different among dietary treatments at 2 and 4 wk of the experiment. At 6 week, the proportion of C18:2 in egg yolk was decreased by feeding CLA-containing oil compared with the control. Polyunsaturated fatty acid:saturated fatty acid (P:S) ratio and n-6:n-3 polyunsaturated fatty acid ratio were similar across the treatments between 2 and 4 week. The P:S ratio was decreased by dietary CLA-containing oil supplementation at 6 week. The proportion of CLA in egg yolk was linearly increased with increasing levels of CLA-containing oil supplementation. In conclusion, dietary supplementation of CLA-containing oil to laying hens increased beneficially increased CLA content in their egg yolk.
Effects of Dietary Mineral Extract from Granite on the Performance of Broiler Chickens and Ammonia Production from the Litter
Cho J. H. ; Jung B. Y. ; Paik I. K. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 43~48
An experiment was conducted to investigate the effects of mineral extract from granite on the performance, ammonia production from the litter, components of blood, Newcastle Disease (ND) titer and intestinal microflora in broiler chickens. Nine hundred sixty one-day-old broiler chickens (Ross) were assigned to five treatments: C; control, Zeolite; control + zeolite 1
, AM10: control + active mineral water
, AM20; control + active mineral water
and AM30; control + active mineral water
. Each treatment consisted of four replicates with 48 broiler chicks for feeding trial. In order to test the effect of ND vaccine on the components of blood, ND titer and intestinal microflora, a separate group of 48 broiler chicks were assigned to the same 5 treatment as the feeding trial plus one negative control (No ND vaccine). Weight gain, feed intake, feed conversion and mortality were not significantly affected by dietary treatments but AM30 tended to be higher than other treatments in weight gain and feed intake, especially during later period (4 to 5 weeks of age). Ammonia production from the litter of AM30 treatment was significantly (P<0.01) lower than the control. Components of blood and ND titer in serum of broiler chickens were not significantly affected by treatments but MCHC (mean corpuscular hemoglobin concentration) of blood was significantly lower (P<0.05) in Zeolite treatment compared to others. The colony forming unit (CFU) of Clostridium perfringens in the small intestinal content of all zeolite and AM treated groups was significantly (P<0.01) lower than the control while the CFU of Escherichia coli was not significantly affected. The CFU of Lactobacilli in AM30 treatment was significantly (P<0.05) higher than the control. In conclusion, dietary supplement of active mineral water adsorbed to zeolite at
level (AM30) tended to improve growth performance of broiler chickens and significantly reduced ammonia production from the litter. It also significantly increased CFU of intestinal Lactobacilli.
Effects of Dietary Yeast (Saccharomyces cerevisiae) Components on Growth Performance, Heal Morphology and Serum Cholesterol in Male Broiler Chickens
Lee B. D. ; Zhang A. W. ; Sung C. K. ; Ahn G. H. ; Lee K. W. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 49~54
An experiment was conducted to investigate whether dietary yeast (Saccharomyces cerevisiae, SC) and its' structural components, i.e., yeast cell-extract (YE) and yeast cell-wall (CW) could influence growth performance, ileal morphology and serum lipids of male broiler chickens. There were four dietary treatments, each consisting of 6 replicates (10 birds per replicate). Chickens were fed a corn-soybean meal base control diet and diets containing SC (
), YE (
) and CW (
), respectively for 5-wk-experimental period. Dietary SC, YE and CW versus the control diet did not affect growth performance of male broiler chickens. Ileal morphology as to villus height, crypt depth and villus:crypt ratio of birds fed on the control diet was not significant from those fed on diets rich in SC, YE and CW, respectively. Dietary SC significantly lowered (P<0.05) serum total cholesterol by on average
as compared to the control group. In addition, chickens fed on diets with either YE or CW lowered serum cholesterol by on average 15.3 and
, respectively as compared to the control albeit that the former only reached statistical significance. In conclusion, our study observed the hypocholesterolemic effect of SC in male broiler chickens. Moreover, YE, i.e., an extract of intracellular components of SC contains active molecules that are responsible far lowering serum cholesterol concentrations, but their identification at the molecular level needs to be assessed.
Influence of Dietary Sea Urchin Shell Powder on Physico-Chemical Properties of Chicken Meat
Kim Y. J. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 55~60
The experiment was conducted to study the effect of sea urchin shell powder (SUSD) on the sensory evaluation, meat color, fatty acid and amino acid contents of chicken meat. One hundred sixty broilers were fed diets for five weeks containing 0, 1, 3 and
of sea urchin shell powder. The shear forces of the treatment groups were higher than the control uoup and the water holding capacity (WHC) was higher in the control group (P<0.05). The heating loss and pH were not significantly different between control and treatment groups (P<0.05). The hardness, juiciness and flavor evaluated by sensory evaluation were improved by treatments, especially in T2 (P<0.05). The meat color of the treatments group showed redder and darker than that of the control group owing to lower L
and higher a
value. Among fatty acids, oleic acid contents of the treatment groups were higher than that of the control group. The treatment groups showed a significantly higher total amino acid content (P<0.05) compared to the control group. The results of this experiment indicated that dietary SUSP tended to improve the sensory evaluation.
Influence of Dietary Sea Urchin Shell Powder on Broiler Performance and Mineral Contents in Chicken Meat
Kim Y. J. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 61~66
This experiment was conducted to compare the influences of dietary sea urchin shell powder (SUSP) supplemented to broiler diets on performance, mineral contents and blood cholesterol for 5 weeks. The experimental diets contained 21.5 and
CP for the starting and finishing period, respectively The ME was 3,100 kcal/kg of feed in both starter and finisher diets. One hundred sixty chicks were assigned to 4 treatments with 4 replicates and fed one of 4 experimental diets containing different levels of SUSP: 1) Control (commercial feed) 2) T1 (commercial feed with
SUSP) 3) T2(commercial feed with
SUSP) 4) T3(commercial feed with
SUSP). Body weight gain was higher in the T1 group when fed the starter diet (P<0.05), but was the lowest in T1 group for finishing period. Feed efficiency was not significantly different between the control and treatment groups (P>0.05). The total cholesterol of the control was higher than the treatment groups and the HDL-cholesterol were higher in T2 and T3. However, effects of diets containing graded levels of SUSP on LDL-cholesterol and triglyceride contents were not found (P>0.05). The SUSP diets were increased significantly the Fe, Zn and Ca contents of chicken meat, and tended to increase total mineral contents. In conclusion, dietary supplementation of SUSP to broiler diets could be applied to the enhancement of Ca, Fe and total mineral contents levels in chicken meat.
Effects of Additional Calcium Additive on Egg Production, Feed Efficiency and Egg Shell Quality in Laying Hens
Na S. W. ; Lee W. J. ; Lee K. H. ;
Korean Journal of Poultry Science, volume 32, issue 1, 2005, Pages 67~72
Forty-wk-old 480 ISA Brown layers were used in a 10-wk feeding trial to investigate the effects of additional various levels of limestone to a low calcium diet without any calcium additives on the performance of laying hens. There were significant differences in average egg weight (P<0.05) without any specific trend among treatments and hen-day egg production was not influenced by the dietary treatments. Daily intake and conversion per kg egg of feed excluded the calcium supplement were significantly reduced (p<0.05) as the level of additional calcium supplement increased in both types of layer diet, while those of feed included the calcium source were significantly increased (P<0.05) as the level of additional calcium supplement increased. Egg specific gravity, eggshell breaking strength and thickness were increased as the level of additional calcium supplement increased, however the significant differences were found only in egg specific gravity It would be possible to reduce the daily feed intake and feed conversion and to improve the eggshell quality by feed the low calcium diet devoid of calcium supplement from the conventional laying hen diet and by supply the additional calcium source at 3 to 4 p.m. instead of the continuous feeding of conventional high calcium diet.