韓國 養鷄의 成長期이었던 1971年부터 1988年까지 最近 18年間 國內 養鷄農歌로 부터 農村振興廳家畜衛生硏究所에 依賴된 닭 可檢物의 病性鑑定結果疾病檢索된 總 9,012件중 傳染性 疾病으로 診斷된 6,181件에 대하여 檢索 年度別, 季節別 및 日令別 檢索狀況을 調査 分析하였던 바 다음과 같은 結果를 얻었다.
1. 年度別 傳染性 疾病의 檢索率은 49.3%(1973年)~78.3%(1985年)로써 年平均 68.6%로 나타나 非傳染性 疾病(31.42%)보다는 월등히 높았다.
2. 傳染性 疾病 중에는 細菌性 疾病이 32.6%(16.2~42.5%)로 가장 높았고 다음 바이러스성 疾病이 26.3%(21.8~38.1%)이었으며 寄生蟲性 및 곰팡이성 疾病은 各各 7.7% 및 2.1%의 낮은 檢索率을 나타내었다.
3. 細菌性 疾病으로는 마이코프라스마病, 大腸菌症 및 葡萄狀球菌症의 年平均檢索率이 各各 8.8%, 8.5%, 5.8%로 가장 높았으며, 다음 살모넬라균증, 雛白痢, 卵黃炎 및 수란관염이 各各 0.8~1.5%이었고 피부염(0.2%) 및 連鎖狀球菌症(0.1%)은 매우 낮은 頻度로 檢索되었다.
4. 바이러스성 疾病중에는 淋巴性 白血病 및 마렉병이 各各 年平均 7.5% 및 7.2%로 가장 많았고 다음 뉴캣슬病(4.4%), 傳染性 喉頭氣管炎(2.0%), 傳染性 囊病(1.7%) 및 鳥腦脊髓炎(1.0%)의 順이었으며 그외 傳染性 氣管支炎, 산란저하증 '76 및 封入體肝炎 등이 各各 1.0%, 미만으로 檢索되었다.
5. 寄生蟲性 疾病의 檢索率에 있어서는 닭 콕시듐病이 年平均 4.5%로 가장 높았고 다음 蛔蟲症이 1.4%이었다. 그외에 류코싸이토준病 黑頭病, 맹장충증 및 外部寄生蟲症이 各各 0.2~0.7%의 낮은 比率로 檢索되었다.
곰팡이성 疾病으로는 곰팡이성 肺炎이 年平均 2.0%, 다음으로 캔디다증이 0.1%檢索되었다.
6. 季節別 傳染性 疾病의 檢索은 夏季 및 秋季節에 各各 27.7%씩 檢索되어 가장 높았으며 다음 多季(23.5%) 및 春季節의 順으로 낮았다. 이들중 細菌性, 바이러스성 및 곰팡이성 疾病은 이와 類似한 傾向이었으나 寄生蟲性 疾病은 夏季 및 秋季節에서의 檢索率이 各各 34.3% 및 39.5%로 다른 季節에 비하여 월등히 높았다.
7. 細菌性 葡萄狀球菌症은 秋季節에서의 檢索率이 가장 높았으며, 바이러스성 疾病으로는 마렉병, 傳染性 喉頭氣管炎 및 傳染性 囊病은 夏季節에, 그리고 淋巴性白血病, 鷄痘 및 산란저하증'76은 秋季節에서 가장 높았으며 傳染性 氣管支炎은 冬季節에 最高頻度로 檢索되었다.
寄生蟲性 疾病에 있어서는 콕시듐病을 위시하여 蛔蟲症, 류코싸이토준병 및 黑頭病등 大部分의 主要疾病이 夏季節 및 秋季節에 가장 많이 檢索되었다.
8. 닭 日令別 傳染性 疾病의 檢索率은 育成鷄(30~150日令)에서 47.4%의 가장 높은 檢索率을 나타내었고 다음 成鷄(150日令以上)에서 35.3% 및 幼雛(30日令미만)에서 17.3%의 順이었다.
이중 細菌性 및 寄生蟲性 疾病은 育成鷄에서의 檢索率이 가장 높았으나, 바이러스성 疾病은 育成鷄 및 成鷄에서 거의 같은 比率로 높았으며 곰팡이성 疾病은 幼雛에서 가장 높은 檢索率을 나타내었다.
A total of 9,012 cases was submitted for diagnosis of chicken diseases to Veterinary Research Institute, Rural Development Administration from domestic chicken farms during 18 years from 1971 to 1988. Of them, 6,181 cases diagnosed as the infectious disease were investigated for the detection rate of infections on basis of year, season, and chicken age.
The results obtained were summarized as followings:
1. Detection rate or the infections was lowest as 49.3% in the year 1973, and highest as 78.6% in 1985 (average 68.6%).
2. Of infections detected, bacterial diseases were most frequent (32.6%), and followed in order by viral (26.3%), parasitic (7.7%), and fungal diseases (2.1%) in geneal.
3. The most frequently detected bacterial diseases in order of prevalence were mycoplasmosis(8.8%), colibacillosis (8.5%), and staphylococcosis (5.8%), and followed by salmonellosis pullorum disease, yolk sac disease, and salpingitis (0.8-1.5%).
4. In viral diseases. 7.5% of infections detected was lymphoid leukosis and 7.2%-Marek's disease, 4.4%-Newcastle disease, 2.0%-infectious laryngotracheitis, 1.7%-infectious bursal disease, and 1.0% avian encephalomyelitis, while detection rate of infectious bronchitis, egg drop syndrome '76, and inclusion body hepatitis was less than 1.0%, respectively.
5. The most prevalent parasitic disease was coccidiosis (4.5%), followed by ascariasis (1.4%). The detection rate of other parasitic diseases including leucocytozoonosis, black head, heterakiasis, and ectoparasitosis was very as 0.2-0.7%, respectively. In fungal diseases, 2.0% of infections was detected as aspergillosis, and followed by candidiasis (0.1%).
6. Detection rate of the infections on basis of season was somewhat higher in summer(27.7%), and autumn (27.7%) than in winter (23.5%), and spring (21.5%) in general.
In bacterial, viral, and fungal diseases, there were the similar tendencies of detection rate as in infections, while parasitic diseases were much highly detected in summer (34.3%), and autumn (39.5%) than in any other season.
7. Among bacterial diseases colibacillosis was most frequently detected in summer, and staphylococcosis in autumn. In detection rate of viral diseases, Marek's disease, infectious laryngotracheitis, and intectious bursal disease was highest in summer, lymphold leukosis, fowl pox and egg drop syndrome '76 in autumn, and infectious trachitis in winter, repectively. The majority of important parasitic diseases including coccidiosis were highly detected in summer and autumn.
8. On basis of chicken age, detection rate of infections were highest in chicken of growing period between 30 and 150 days of age (47.4%), and followed by 35.3% in laying chicken over 150 days of age, and 17.3% in chicken of brooding age under 30 days of age.
Bacterial, and parasitic diseases were most frequently detected in chicken of growing period, viral diseases in chicken of growing, and laying period as nearly equal rate of detection, and fungal diseases in chicken of brooding age.