Waldner C L, Henderson J, Wu J T, Coupland R, Chow E Y
Department of Herd Medicine and Theriogenology, Western College of Veterinary Medicine, 52 Campus Drive, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0.
Can Vet J. 2001 Feb;42(2):130-2.
Blood samples were collected from 1806 pregnancy-tested cows from 174 herds at a northern Alberta auction mart in the fall of 1998. One hundred sixty-two (9.0%) of these samples were positive for antibodies to N. caninum. Thirty-five of 260 samples (13.5%) collected from the same region in the 1980s were also serologically positive for N. caninum.
1998年秋季,从阿尔伯塔省北部一个拍卖市场的174个牛群中选取了1806头已进行妊娠检测的奶牛采集血样。其中162份(9.0%)样本的犬新孢子虫抗体呈阳性。20世纪80年代从同一地区采集的260份样本中,有35份(13.5%)的犬新孢子虫血清学检测也呈阳性。