JyothiSree Ch, Venu R, Samatha V, Malakondaiah P, Rayulu V C
Department of Veterinary Parasitology, NTR College of Veterinary Science, Gannavaram, India.
Sri Venkateswara Veterinary University, Tirupati, India.
J Parasit Dis. 2017 Jun;41(2):476-482. doi: 10.1007/s12639-016-0832-z. Epub 2016 Sep 23.
species are the obligate tissue protozoan parasites of livestock causing clinical and subclinical disease resulting in downgrading of the meat and their products thereby leading to economic losses. The present study reveals the prevalence and distribution of sarcocystosis in water buffaloes () slaughtered at local abattoirs in A.P for a period of 1 year from June 2014 to May 2015. A total of 137 buffalo carcasses were screened grossly and microscopically organ wise viz., esophagus, tongue, heart, diaphragm and intercostal muscles. Out of 137 screened, 91 were infected with an overall prevalence of 66.42 %. Age wise analysis of 89 young male calves aged about 18-36 months old revealed 65.16 % (58/89) and 48 old she buffaloes (5-8 years) showed 68.75 % (33/48). The organ wise prevalence was highest in esophagus (51.82 %) followed by tongue (47.44 %), heart (29.92 %), diaphragmatic muscles (28.46 %) and intercostal muscles (18.24 %), respectively. Morphometric studies revealed the presence of two species, i.e., and infection with a prevalence of 43.79 and 22.62 %, respectively, along with mixed infection rate of 43.06 %. Microscopic studies of showed sarcocyst length/width/cyst wall thickness ranged between 0.31-0.69/0.09-0.12 mm/<1 µm, respectively, and bradyzoites with an average of 6.25 µm length/2.5 µm width. Similarly, cyst ranged between 2 and 8.5 mm/1-3 mm/2-5 µm and bradyzoites with an average of 10 µm length/2.5 µm width. The histopathological studies revealed congestion and degenerative changes of myocytes along with infiltration of mononuclear cells.
肉孢子虫属是家畜专性组织内寄生的原生动物寄生虫，可引发临床和亚临床疾病，导致肉类及其产品等级下降，从而造成经济损失。本研究揭示了2014年6月至2015年5月期间在安得拉邦当地屠宰场宰杀的水牛中肉孢子虫病的流行情况和分布。总共对137具水牛尸体按器官进行了大体和显微镜检查，这些器官包括食管、舌头、心脏、膈肌和肋间肌。在137具接受检查的尸体中，有91具受到感染，总体感染率为66.42%。对89头年龄约18至36个月的年轻雄性小牛进行的年龄分析显示，感染率为65.16%（58/89），48头老年母水牛（5至8岁）的感染率为68.75%（33/48）。按器官的感染率最高的是食管（51.82%），其次是舌头（47.44%）、心脏（29.92%）、膈肌（28.46%）和肋间肌（18.2%）。形态学研究表明存在两种肉孢子虫，即 种和 种，感染率分别为43.79%和22.62%，混合感染率为43.06%。对 的显微镜研究显示，肉孢子虫的长度/宽度/囊壁厚度分别在0.31 - 0.69/0.09 - 0.12毫米/<1微米之间，缓殖子平均长度为6.25微米/宽度为2.5微米。同样， 种的囊在2至8.5毫米/1至3毫米/2至5微米之间，缓殖子平均长度为10微米/宽度为同样， 种的囊在2至8.5毫米/1至3毫米/2至5微米之间，缓殖子平均长度为10微米/宽度为2.5微米。组织病理学研究显示，肌细胞出现充血和退行性变化，伴有单核细胞浸润。
