Volodymyrovych Bohach Mykola, Igorovych Bolotin Vitaliy, Mykolaivych Bohach Denys, Piven Olha Tarasivna, Pyvovarova Iryna Victorivna
Odesa Experimental Station of the National Scientific Center, Institute of Experimental and Clinical Veterinary Medicine, 65037, Odesa, Ukraine.
National Scientific Center, Institute of Experimental and Clinical Veterinary Medicine, 61023, Kharkiv, Ukraine.
J Vet Res. 2022 Sep 2;66(3):345-351. doi: 10.2478/jvetres-2022-0047. eCollection 2022 Sep.
Contagious agalactia of ruminants is an endemic disease caused by in flicting significant losses on farms in deaths and forced slaughter of sick animals, abortions, births of sick young animals, and reduced milk and wool production. The aim of the study was to determine the influence of hydrometeorological conditions on the distribution and forms of contagious agalactia in sheep in Bessarabia, Ukraine.
The epizootic situation regarding contagious agalactia was studied during 2011-2021 on sheep farms in the south of the Odesa region in Bessarabia. Over two million blood samples from sheep aged 1-6 years were serologically investigated and the prevalence of agalactia was correlated with Selyaninov's hydrothermal coefficient for each sampling year.
High rates of infection of sheep with contagious agalactia (from 13.1% to 14.4%) were registered in 2012, 2016 and 2021, years which according to the hydrothermal coefficient of 1.0 were sufficiently moist. The lowest incidence rates, from 6.5% to 7.4%, were registered in the very dry 2013, 2014 and 2019 with hydrothermal coefficients of 0.5‒0.6. In sufficiently moist years, contagious agalactia of sheep manifested itself in the mastitic form, while in the dry period the mastitic form was half as prevalent, and the mixed, articular and ocular forms of the disease proliferated.
The results indicate the circulation of among small ruminants in Bessarabia, and that the prevalence and the course of the associated disease depend on the humidity of the climate, . the value of the hydrothermal coefficient.
反刍动物传染性无乳症是一种地方病，会导致农场因患病动物死亡、被迫屠宰、流产、幼崽患病出生以及牛奶和羊毛产量下降而遭受重大损失。本研究的目的是确定水文气象条件对乌克兰比萨拉比亚地区绵羊传染性无乳症的分布和形式的影响。
2011年至2021年期间，对比萨拉比亚敖德萨地区南部的绵羊养殖场的传染性无乳症疫情进行了研究。对超过两百万份1至6岁绵羊的血样进行了血清学调查，并将无乳症的患病率与每个采样年份的谢良诺夫水热系数相关联。
2012年、2016年和2021年记录到绵羊感染传染性无乳症的比例较高（从13.1%到14.4%），根据水热系数为1.0，这些年份湿度充足。在非常干燥的2013年、2014年和2019年，水热系数为0.5 - 0.6，记录到的发病率最低，为6.5%至7.4%。在湿度充足的年份，绵羊传染性无乳症表现为乳房炎形式，而在干旱时期，乳房炎形式的患病率减半，疾病的混合、关节和眼部形式则增多。
结果表明在比萨拉比亚小反刍动物中存在循环，并且相关疾病的患病率和病程取决于气候湿度，即水热系数的值。
