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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 10, Issue 2 - Dec 1983
Volume 10, Issue 1 - Oct 1983
Selecting the target year
A Study on Production, Dressing and Marketing of Broiler
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 1~22
The Purpose of this study is to examine both supply and demand side of broiler chicken in Korea. Especially the paper aims to investigate the broiler chicken production Dressing and marketing pattern which may affect the demand for it. It is generally understood that broiler chicken production becomes unstable because of frequent market price fluctuation mainly due to disequilibrium of quantities demanded ana supplied It is important to point out that marketing in the form dressed chicken has been enforced by the regulation in Seoul area since March 1st, 1983, though live birds have been customarily marketed for year. It is assumed that the subsituation of chicken meat for beef would save foreign exchanges, because increasingly large amount of beef is imported mainly thanked to a chronical shortage in local production. Main findings of this study may be summarized as follows: 1) Broiler chicker production has been rapidly increased recently, estimating 180-200 million head per year with the trend of contineous increase year after year. Price fluctuation during the year is found, especially summer and winter mainly due to seasonal demand change. It is known that mal-funconing of broiler chicken market may be one of the causes for a large Price fluctuation. Accordingly the increase of marketing efficiency may reduce the price fluctuation and also positively impact on creating demand for the chicken consumption. 2) It is also interesting to note that 90 percent of broilers are grown on the floor and almost 86 percent of total broilers composed of so called high-bros, weighing on an average more than 1.6kg per head Approximately 8 weeks are required for of around marketing birds at the feed efficiency of around 2.3-2.5 Average broiler farm raises between 1,000 and 2,000 head, showing a quite small scale of operation. Only a few sampled farmers follow an all-in and all-out method in broiler production.
A Study on the Thickness of Egg Shell and Egg Shell Membrane in Silky Fowl
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 23~29
This study was carried out to investigate the variabilities of the thickness of egg shell and shell membrane of silky fowl egg from April 11, 1983 to May 14, 1983. One hundred and twenty eggs used in this experiment were obtained from a Synanmyun silky fowl farm, Sanchungkun, Gyeongnam province. The results obtained are summarized as follows: 1. Total items investigated for the silky fowl egg; egg weight, egg shell weight, egg shell thickness of sharp end, middle part, and blunt end, egg shell membrane thickness of snarp end, middle part, and blunt end, breaking strength, length of egg(L), width of egg(W), and L/W, were measured as 36.58
0.010cm, and 1.26
0.005, respectively. 2. Correlation coefficients among 66 combinations of 12 items were estimated. The correlation coefficients relating to egg weight, egg shell weight, egg shell thickness of sharp end, middle part, and blunt end breaking strength, length of egg (L), width of egg (W), and L/W were largely to be highly significant but those related egg shell membrane thickness of sharp end middle part, and blunt end were not significant, sometimes showing inverse correlation
Effects of Substitution of Hydrolyzed Leather Meal for Fish Meal in the Broiler Diet
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 30~34
An experiment was carried out to evaluate the feeding value of hydrolyzed leather meal (HLM) replacing fish meal A total of 240 day-old female chicks of Maniker strain was divided into 20 groups of 12 birds ecah. Each groups was assigned to one of the five dietary treatments (0. 1. 2, 4 and 6% HLM). The feeding trial was conducted for six weeks. Results obtained are summarized as follows: 1. The HLM used in this experiment contained 74.41% crude protein. 17.0% crude ash and 2.0% chromium. Pepsin digestibility of the protein was measured to be 85%. Amino acid contents were also determined 2. The inclusion of HLM up to 4% in broiler rations did not depress the growth rate, feed consumption and feed efficiency of experimental birds. However, these performance parameters were significantly (p＜0.05) depressed when fed 6% HLM. These results indicate that HLM in place of fish meal can be used up to 4% in tile broiler rations.
Factors Affecting True Metabolizable Energy Determination of Poultry Feedingstuffs I. Comparative study on the measuring methods or AME, AME
and TME value of feedingstuffs.
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 35~45
This experiment was performed to compare the techniques of the metabolizable energy determination and to, examine the problems associated with metabolizable energy determination of poultry feedingstuffs. The feedingstuffs evaluated herein, were corn, sorghum, barley. fish meal and soybean meal The results obtained were as followings : 1. When comparing AME and AMEn values of five feedingstuffs(measured) by Total Collection ana Index Methods there was no significant difference (P＞.05) between two methods except fish meal. 2. The AME
values of feedingstuffs were not different (P＞.05) from AME values. which implied that bioassay of AME
be applicable to rapid measure AME value of feedingstuffs for poultry and the problems connecting to AME
determination were discussed. 3. The AME
and TME values of corn, sorghum and barley were significantly higher (P＜.05) than AME and AME
values but those of fish meal and soybean meal were similar or lower than AME and AME
values. This fact was indicative that the techniques measuring AME
and TME has some depressing factors when fish meal and soybean meal were determined. 4. Comparing of TME, AME
and T-AME values tile TME values of corn sorghum and barley were significantly higher(P＜.05) than AME
and T- AME values. But that of fish meal and soybean meal was much lower(P＜ .05)comparing with AME
and T-AME values. According]y, it night be concluded that the relationship among the values of TME. AME
and T-AME was shown great variation according to the feedingstuffs, especially in the protein diets.
Factors Affecting True Metabolizable Energy Determination of Poultry Feedingstuffs Effect of level of feed input and diet types on apparent and true metabolizable energy of corn and soybean meal.
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 46~52
The study was carried out to examine factors affecting metabolic plus endogenous one.9y (FEm＋UEe) losses by adult roosters. Experiment one was performed to examine the effect of excreta collecting period and Experiment two, of feeding soluble carbohydrates (corn starch and glucose) to birds on FEm＋UEe losses. The results obtained were as follows : 1. The excreta voided, energy and energy losses by the roosters during collecting period II (24-48hr) were generally higher than those of period I, at though there was no significant difference (P＞.05). 2. There was not found correlationship between body weight (X) and excreta voided, energy and nitrogen losses IY) (P＞.05). The fact supported that body weight of birds did noy affect the losses of FEm＋UEe by adult rooster. 3. The feeding of glucose and mixture (corn starch＋glucose) decresed excreta voided, energy and nitrogen losses significantly (P＜.05) comparing with those of unfed birds. 4. The excreta voided, and nitrogen loss of birdsfed corn starch were much lower thu those of unfed birds. Fact that FEm＋UEe losses was not significantly different (P＞.05) between birds fed corn starch and unfed birds was indicative that apparent digestibility of corn starch was much lower than that of glucose ana mixture. 5. Nitrogen loss of fed birds was greatly reduced comparing with that of fed birds. The finding was indicative that the carbohydrates input was ultilized to supplemented energy loss through the catabolism of body tissue during fasting.
Factors Affecting True Metabolizable Energy Determination of Poultry Feedingstuffs III. Effects of excreta collecting period and of feeding of soluble carbohydrates on metabolic and endogenous energy losses
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 53~59
The stuff was carried out in order to investigate the effect of level of feed input on AME (AME
F/) and TME (AME
FC/) values and of diet types of experiment on TME values of corn. yellow and soybean meal Experimental diet was fed as type of balanced diet instead of single ingredient at the level of 25. 50 and 75gm The results obtained were as follows : 1. The AME and AME
F/ values of corn ana soybean meal were significantly different (P＜.05) at each level of feed input. especially at 50gm feed input. the AME and AME
F/ values of corn and soybean meal were the highest of all treatments and the AME of corn between 50gm and 75gm of feed input was not found significant difference(P＞.05). 2. The TME and AME
FC/ values of corn were not significantly different (P＞.05) at each feed input but those of soybean meal differed greatly (P＜.05) the fact that AME
FC/ and TME values of soybean meal were the highest at 50gm of feed input was indicative that there were problems to measure AME
FC/ and TME values of soybean meal. 3. There was not found significant difference (P＞.05) according to the type of diet when fed single and balanced diet.
Monoclonal Antibodies Against a Paramyxovirus Isolated from Japanese Sparrow-Hawks(Accipiter virugatus gularis)
Hoshi ; Mikami, S.T. ; Onuma, M. ; Izawa, H. ;
Korean Journal of Poultry Science, volume 10, issue 1, 1983, Pages 60~66
Monoclonal antibodies against Taka virus, a variant of Newcastle disease virus (NDV), were produced to compare the antigenicites of several avian paramyxoviruses including NDV. It was also used to study the activesite(s) of haemagglutin (HA) and neuraminidase activities of NDV. Five independent hybrid cell lines, which produced monoclonal antibodies against haemagglutinin-neuraminidase (HN) molecule of Taka virus, were established. From the results of the cross haemagglutination-inhibition(HI) test the monoclonal antibodies, the HN molecule of Taka virus seemed to have at least three different antigenic determinats; one was specific for all NDV strain tested, the second was only for Taka virus and the third was for Take virus, Banger and Yucaipa Furthermore the differences in the ratio of HI to neuraminidase-inhibition titers suggested that the active sites involved in HA and neuraminidase activities might be different from each other. However, since each of five monoclonal anitbodies was not especially specific for either HA or neuraminidase, the possibility that a single active site on the HN molecule may be responsible for both activities has not been excluded