Effect of Fusarium roseum corn culture containing zearalenone on early pregnancy in swine

A corn culture of Fusarium roseum was added to a standard corn-soybean swine gestation ration. Low, middle, and high dosage mixed feeds contained 7, 38, and 64 mg of zearalenone/kg of feed (7, 38, and 64 ppm) and 0.5, 2.5, and 4.5 mg of deoxynivalenol/kg, respectively. Control feed was the standard ration without added F roseum corn culture. Mature gilts were bred by natural service and fed control or F roseum molded feed from 3 to 34 days after breeding. The main effect of the molded feed was an inhibition of fetal development, with decreased numbers of fetuses present in treated animals at slaughter (38 to 43 days after breeding). Normal litters were present in 7 of 8 control animals, in 2 of 4 gilts given the low-dosage feed, in 1 of 4 gilts given the medium dosage, and in 0 of 4 given the high-dosage feed. Corpora lutea were maintained in all treated animals, as evidenced by serum progesterone concentrations. Serum estradiol concentrations were decreased in gilts in the middle- and high-dosage groups. The genital system of the gilts fed low- and middle-dosage feeds had a gross and microscopic appearance similar to that of the pregnant controls and reflected prolonged progesterone stimulation. Morphologic changes in the genital system of the high-dosage group were intermediate between changes induced by progesterone and those induced by estrogen. Clinical signs of hyperestrogenism and partial feed refusal were noticed in only some of the high-dosage group animals.     

Aspects épizootiologiques des affections respiratoires porcines qui sévirent au Québec, de septembre 1980 à février 1981

Epizootiological aspects of porcine respiratory diseases which were encountered in Quebec from September 1980 until February 1981     

A study of vertebral osteophyte formation in the canine spine. I. Spinal survey

Spinal radiographs were made of fifty-nine cadavers and examined for the presence of vertebral osteophytes. The osteophytes were classified into two types and examined histologically. It was concluded that the end-plate osteophyte (type 1) represents spondylosis performans and that the type 2 osteophyte may fit into definition of the human condition, ankylosing hyperostosis.     

ANGIOGRAPHIC EVALUATION OF BOVINE FOOT ABNORMALITIES

Angiography of normal and diseased feet in cattle was carried out. In osteomyelitis of distal phalanx there was a narrowing of the digital artery with diminished vascular supply to the affected digit. An area of bone necrosis was found to be avascular. With overgrown hooves, narrowing of both the medial and lateral digital arteries with ill-defined laminar vessels was seen. The vascular pattern in cattle with cork screw claws was characterized by a dilated tortuous digital artery and a crowded arterial network resulting in increased vascular supply in the affected claw. Abrupt stricture of common digital artery, a crowded vascular network in the area of the middle phalanx and filling defects of terminal arches were demonstrated in animals with exostosis     

Primary hepatic carcinoid (APUD cell carcinoma) in the cat

The clinical and pathological features of a case of primary hepatic carcinoid in a cat are described. It is believed that this is the first recorded case of such a tumour in cats.     

Une technique ELISA pour la detection des anticorps anti-virus maedi-visna. Etude comparative avec l'immunodiffusion en gelose et la fixation du complement

An indirect microELISA test was performed for detection of maedi-visna antibodies in ovine and caprine species. The antigen consisted in viral particles, highly purified by successive ultracentrifugations.By comparative testing of 934 sera in ELISA and gel immunodiffusion, we found a good correlation between these two teṡts, and moreover, ELISA revealed another 11.3% of positive samples. The precocity of this ELISA was shown by experimental infection of sheep with different strains of maedi-visna: positive sera were detected 7 weeks post-infection, instead 4–5 months with gel immunodiffusion. The complement fixation test was compared with gel immunodiffusion and was found the less sensitive.This ELISA test appeared to be satisfactory, and may be used for early diagnosis of maedi-visna infection.