Histopathological and biochemical findings of congenital copper deficiency: are these similar to those of caprine arthritis-encephalitis?

This study was done after identifying animals with a twisted carpal joint in goat herd. These included a kid goat walking on its articulus carpii and a newborn goat with a stiff leg. Necropsies of the diseased goats revealed swollen carpal joints that were twisted backwards.

Infectivity of Cryptosporidium muris directly isolated from the murine stomach for various laboratory animals.

Oocysts of Cryptosporidium muris, directly isolated from the stomach of experimentally infected laboratory mice were orally inoculated into rats, gerbils, guinea pigs, dogs, and rabbits. Weaned rats developed patent C. muris infection as evidenced by the endogenous stages in gastric glands and oocyst shedding 10-17 days later.

Natural Cryptosporidium muris infection of the stomach in laboratory mice.

Histopathological findings were described in naturally infected laboratory mice in conjunction with the presence of oocysts in the feces related to cryptosporidiosis of the stomach. Diagnosis of infection was made by the observation of oocysts which were indistinguishable from those of Tyzzer's original description of Cryptosporidium muris seen in feces. In addition to this, endogenous developmental stages of the parasite in histologic preparations of tissues obtained at the time of postmortem examination were observed only in the gastric glands of the stomach.

Small-intestinal cryptosporidiosis in a young pigeon.

Small-intestinal cryptosporidiosis in a 10-day-old pet pigeon is described. Clinically, the pigeon was depressed and inactive, its feathers were ruffled, and had faecal material adhering to feathers around its vent. Gross lesions were seen only in the intestinal tract and consisted of mild hyperaemic segments of small intestine distended with typical green watery ingesta.