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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 30, Issue 3 - Sep 2003
Volume 30, Issue 2 - Jun 2003
Volume 30, Issue 1 - Mar 2003
Volume 30, Issue 4 - Jan 2003
Selecting the target year
Effects of Dietary Supplementation of Complex Probiotics on Performance in Laying Hens
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 145~150
A feeding trial was carried out to investigate the effect of dietary complex probiotics on performance. egg qualities and intestinal microflora in laying hens. Three hundred twenty ISA Brown laying hens, 34 weeks of age, were randomly allotted to four dietary treatments containing 0, 0.1, 0.2 and 0.4% complex probiotics for 12 weeks. There were four replicates per treament. Total egg production, soft and broken egg number tended to improve as dietary complex probiotics increased, but was not significantly different. Average egg weight was significantly higher in the 0.1% and 0.2% complex probiotics than the control(P<0.05). Daily egg mass also increased by adding complex probiotics compared to that of control, but was not statistically different. No significant difference was found in feed intake and feed conversion ratio. Eggshell breaking strength and thicknes were not significantly different, whereas yolk color was significantly lower in the supplemental 0.2% probiotics than the comtrol at 12 weeks of age(P<0.05). There was no significant difference in Haugh unit. Total number of cecum Lactobacillus and naerobes were significantly higher in the complex probiotics than control(p.0.05). However, the number of ileal Lactobacillus and naerobe were not significantly different. It was concluded that dietary complex probiotics could improve the egg weight and intestinal beneficial microbes.
Effects of Feeding Aspergillus oryzae Ferments on Performance, Intestinal Microflora, Blood Serum Components and Environmental Factors in Broiler
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 151~159
Two experiments were carried out to evaluate the effects of feeding Aspergillus oryzae(AO) ferment on performance, intestinal microflora, serum components, ammonia generation and litter dampness in broiler chicks. In experiment I, three hundred sixty, one day old broiler chicks, Abor Acres, were fed 0 and 0.1% of Aspergiilus oryzae short conidia ferment(AOS) and 0.1% of Aspergillus oryzae long conidia ferment(AOL) for five weeks. In experiment II, three hundred sixty, one day old broiler chicks, Abor Acres were fed 0, 0.1 and 0.2% of Aspergillus oryzae long conidia ferment(AOL) for five weeks. In experiment I, growth rates were not statistically different among dietary treatments. AOS and AOL showed increased tendency in weight gain and feed intake compared to those of control, whereas feed conversion was not different. Litter dampness of AOS and AOL was also tended to decrease compared to that of control, but was not significantly different. Fecal ammonia gas generation was decreased in feeding AOS and AOL, and maintained 1/2 to 3/4 compared to the control. In serum metabolites, AOS and AOL increased glucose and calcium, and decreased total protein, blood urea nitrogen and total cholesterol. In experiment II, body weight of chicks fed 0.1 and 0.2% AOL were heavier than the control(P<0.05). Feed intake of chicks fed 0.1 and 0.2% AOL also were higher than the none, but feed conversion ratio was not different among treatments. Ileal and cecal microflora showed increased tendency in lactic acid bacteria compared to those of the control. Salmonella and E. coli were decreased in ileum of chicks fed 0.1 and 0.2% AOL. In conclusion, feeding AO ferment increased growth performance and improved intestinal microflora of broiler chicks and environments of broiler house.
Effects of Feeding Earth Worm Meal on the Performance of Laying Hens and Fatty Acids composition in Egg Yolk
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 161~167
A study was conducted to investigate the effect of supplementing earthworm meal (EWM) on the performance of laying hens and fatty acid composition in egg yolks. A total of 360 laying hens at 55 weeks of age were fed the experimental diets containing 0.0% (Control), 0.1% and 0.2% of EWM for 5 weeks. Eggs were collected and weighted every day and egg production and feed conversion were recorded every weeks during the experimental period. However fatty acid composition of egg yolk were measured at last week of experimental period. Amount of feed intake tended to increase by supplemental EMW, but feed conversion ratio of birds fed EWM was not different among three groups. Average egg production seemed to increase and significantly improved (P<0.05) when fed a 0.1% EWM and 0.2% EWM, respectively. Average egg weight was prone to decrease when fed a 0.1% EWM compared to that fed a 0% (control) or 0.2% EWM. Average daily egg mass tended to improve by the addition of EWM. It was more increased in 0.2% EWM treatment than 0.1% EWM. The ratio of egg yolk n-6/ n-3 fatty acids contents was 5:1 fed a 0.1% and 0.2% EWM. But these ratio was 10:1 in control group. It is concluded that 0.2% earthworm meal supplementation in the 55 weeks old laying hens diet, improves the laying performance and ratio of egg yolk n-6/ n-3 fatty acids contents (P<0.05).
Effect of Various Energy Regimens on Egg Production and Feed Cost of Broiler Breeders Peaked in Winter Season
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 169~175
This experiment was conducted to study the optimum energy feeding regimens fur broiler breeders peaked in winter season with 400 caged hens of Ross strain. Four energy supply regimens which were different in daily energy allotment during laying period were employed for 40 weeks from 24 to 64 weeks of age. All experimental diets were formulated to contain 2,750 kcal ME/kg with adjustments made in total feed allotment to provide the desired energy levels. Total consumption of the feed would provide 20 g of protein, 4 g of calcium and 0.35 g of available phosphorus. There were no difference in hen-day egg production and average egg weight among the regimens of energy supply. Feed, ME and feed cost required per egg or per kg egg were significantly increased as the level of energy allotment increased(p<0.05). It was concluded that the energy supply regimen, which supplied 280 kcal ME per day at the age of 24 weeks and then increased the energy supply up to 400 kcal ME per day at the peak period of 30∼34 weeks of age, was superior in feed, ME and feed cost required per egg or per kg egg without any adverse effect on eg production and egg weight.
Effect of Dietary Xanthophylls Supplementation on the Antioxidant and Color Properties of Broiler Meat
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 177~182
This study was carried out to investigate the influence of dietary xanthophylls supplementation on the antioxidant and color properties of broiler meat. After raised for 6 weeks, broilers were slaughtered and stored at 3
for 9 days. Experimental treatments were divided into lutein, canthaxanthin, astaxanthin and capsanthin. The supplementation level was adjusted to 30 ppm. The pH values of the thigh was higher(P<0.05) than those of the breast. No differences in pH values were shown among xanthophylls treatments. Xanthophylls supplementation to chick inhibited the formation of TBARS(Thiobarbituric acid reactive substance) and POV(lipid peroxide) of broiler meat during storage. At 9 day storage, the TBARS and POV of xanthophylls treatment decreased as compared to the control(P<0.05). The broiler meats fed astaxanthin had antioxidant effects in both breast and thigh. Dietary xanthophyll supplementation to chick decreased the CIE L(lightness) and increased a(redness) values of broiler meats fed canthaxanthin increased(P<0.05) during storage. These results indicated that broiler meats fed xanthophylls had dark-red color and antioxidant effect during refrigerated storage.
Effect of Feeding Diets Containing Green Tea By-Products on Laying Performance and Egg Quality in Hens
Yang, C.J. ; Jung, Y.C. ; Uuganbayar, D. ;
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 183~189
This study was carried out to evaluate effect of dietary green tea by-products (GTB) on laying performance and quality of eggs in hens. A total of 96 laying hens (22-week-old) "Tetran Brown" were allotted to four dietary treatments, which containing 0, 2, 4 and 6% green tea-by products. The results showed that the egg production increased (P＜0.05) in layers fed diets containing 4% or 6% green tea-by products compared to the layers fed control no GTB. Egg weight and egg mass in layers fed diets containing 2% green tea by-products significantly decreased compared to those in the other groups (P<0.05). The feed intake was lower in layers fed diets containing 2% and 6% green tea by-products. The feed conversion ratio was lower (P<0.05) in layers fed diets containing 4% or 6% green tea by-product supplementation respectively. The egg shell thickness was no significantly different between layers fed the control and green tea by-product diets (P>0.05). The egg yolk cholesterol tended to decrease when layers fed diets containing green tea by-products, although the differences were not significant (P＞0.05). The linolenic and docosahexaenoic (DHA) acid contents in egg yolk significantly increased in layers fed diets containing different levels green tea by-products compared to those fed control diet (P<0.05). These results suggest that inclusion of green tea by-products in layer diets is suitable for hens without negative effects on egg composition.
Production and Characterization of Egg Yolk Antibodies (IgY) against Flagella Antigen of Salmonella sp.
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 191~196
Egg yolk antibodies(IgY) from laying hens immunized with antigens from Salmonella choleraesuis, Salmonella typhimurium and Salmonella dublin were produced. The Antigenic proteins isolated from those flagella of Salmonella sp., determined by SDS-PAGE, were pure and had a molecular mass of approximately 53.4, 51 and 54.6 kDa, respectively. The IgY titers were found at two weeks after first immunization and increased gradually to maximum of 330,000 300,000 and 440,000 respectively. According to the results of specificity test by ELISA, the IgY raised against Salmonella sp. were found highly specific activity levels. Concentration of Salmonella sp. incubated with anti-Salmonella sp. IgY were drastically reduced to the levels of 2.8∼4.0 log CFU/ml. The contents of IgY in an egg yolk was approximately 31∼33 mg/ml.
Impact of Feeding Multiple Probiotics on Performance and Intestinal Microflora in Broiler Chicks
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 197~202
Feeding probiotics in broiler chicks still critical in several aspects. Thus, this study was conducted to investigate the impact of feeding multiple probiotics on performance, intestinal microflora, blood cholesterol and ND antibody vaccine titer in broiler chicks. Three hundred twenty one day old male broiler chicks(cobb
cobb) were divided into four levels of multiple probiotics(0, 0.1, 0.2, 0.3%) with five replicates for 35 days. Basal diets contained 21.5, 19.0% CP and 3,100 kcal/kg ME for starting and finishing period, respectively. Weight gain, feed intake and feed conversion were measured weekly. The number of Salmonella, E. coli, Lactobacillus, and yeast were examined from ileum and cecum at the end of experiment. ND vaccine titer, cholesterol were detected from sera. Weight gain of birds fed probiotics were 669.33, 679.75 at the level of 0.1 and 0.2% supplemental groups for starting period. It was also improved in those treatments for finishing period and higher than control for total period. Feed conversion tended to be improved compared to that of control by the supplementation of probiotics for the first three weeks and seemed to show the similar tendency for the rest of two weeks. It was 1.611, 1.621 for the entire feeding period and improved compared with control. Total salmonella, was not decreased in ileal digesta of birds fed the probiotics compared with control, whereas the number of yeast increased in 0.1% treatment. However, the number of Lactobacillus and yeast in cecum was higher than control. Even though the blood cholesterol seem to high in 0.1% probiotics treatment, the ratio of HDL to total cholesterol showed higher than control. ND vaccine titer of birds fed probiotics were significantly higher than control (P<0.05). These results 0.1% multiple probiotics would be possible to improve the performance of broiler chicks and ND vaccine titer.
Impact of Feeding Multiple Probiotics on Productivity, Intestinal Microflora and Fecal Noxious Gas Emission in Broiler Chicks
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 203~209
This experiment was conducted to investigate the influence of dietary supplementation of two different types of multiple probiotics in broiler chicks. Four hundred one day old male broiler chicks(Ross
Ross) were raised in the floor pen with five treatments(0, A: 0.10, 0.20%, B: 0.10, 0.20% of probiotics), consisting of 5 replicates for 5 weeks. Weight gain, feed intake and feed conversion were measured weekly, Total Lactobacillus, yeast, E. coli, Salmonella were examined from ileum and cecum at the end of experiment. Sera protein, cholesterol and ND vaccine titer were measured and fecal COD, CO
were detected in 24 hours after collection. Weight gain of chickes fed both types of probiotics increased for the first three weeks and showed significantly higher for the rest two weeks. Feed intake tended to be high in probiotics treatments compared with contro(P<0.05)1. Feed conversion improved significantly in B types of 0.2% probiotics compared with control. Total number of Salmonella was not consistent in ileum among treatments, whereas E. coli tended to be decreased in both types of probiotics compared with control. NH
emission of feces were decreased in both types of probiotics, but it was not statistically different(p>0.05). COD of chicks fed both probiotics was lower than control. There were no significantly different breast meat(P>0.05). Total cholesterol decreased in probiotics groups regardless of it's type. ND antibody vaccine titer was prone to be a small increments.
A Comparison of Fattening Performance, Physico-Chemical Properties of Breast Meat, Vaccine Titers in Cross Bred Meat Type Hybrid Chicks Fed Sulfur
Korean Journal of Poultry Science, volume 30, issue 3, 2003, Pages 211~217
A study was conducted to investigate the fattening performance, physico-chemical properties of breast meat, vaccine titers in cross bred meat type hybrid chicks fed organic sulfur. Total three hundred and sixty chicks of eight weeks old were replaced in individual cage from 8 to 10 weeks old. Four levels of organic sulfur (0, 1.0, 2.0, 4.0%) containing 45% sulfur were added into basal diet containing CP 19% and ME 2,950 kcal/kg. Weight gain, feed intake, fred conversion were weekly measured. The proximate composition, physico-chemical properties of breast meat, vaccine titer and sensory characteristics were examined at the end of experiment. Weight gain, feed intake and feed conversion of birds fed organic sulfur were not statistically different with control. There were no significant difference in feed intake and feed conversion. However, abdominal fat(%) of birds fed organic sulfur tended to increase compared with control. Crude fat of breast meat decreased significantly in organic sulfur treatments(P<0.05). The red color of breast meat seemed to increase but was not statistically different among the treatments. Cooking loss showed decrements significantly in organic sulfur treatments(P<0.05). Mechanical Hardness, cohesiveness and springiness were prone to be high and gumminess greatly high in breast meat of birds fed organic sulfur addition compared with control. Juiciness tended to increase and greasiness decreased(P<0.05) in organic sulfur treatments by the sensory evaluation. The overall acceptability of the breast meat was the highest at 2.0% organic sulfur added chicks(P<0.01). There were no different blood cholesterol, AST, ALT and BUN.