Parturition was induced in a cow on the 307th day of pregnancy, or 67 hours after the 2nd intramuscular injection of 20 mg of dexamethasone. Fetal membrane retention was observed. The calf was alive at the time of delivery. It had an opening in the skull with a soft tissue protrusion. The pituitary gland, cerebellum, and cerebrum were absent. Adrenal hypoplasia was noticed. The reproductive steroids determined by radioimmunoassay showed the same patterns as observed in the normal parturition by other researchers, except that a characteristically low level of serum cortisol was seen in the newborn calf and a low level of serum estrogen in the cow around parturition.
A disease with jaundice, colic, and photophobia as main symptoms broke out among grazing cattle in Oshamambe, Hokkaido. It was demonstrated to be a plant poisoning caused by Daphniphyllum macropodum subsp. humile (Maxim.) HURUSAWA, which contained a toxic substance affecting the liver specifically. A cow and a goat died suddenly when administered with at least 3.0 and 2.7g/kg, respectively, of this plant (as doses of crude drug).
There was a distinct correlation in the results of determination of blood plasma fibrinogen between the method using salting-out and nephelometry (SN method) and the tyrosine method. The SN method was of high reproducibility and available for determination of blood plasma fibrinogen in cattle and dogs. Blood plasma samples obtained with seven conventionally used anticoagulants could be employed for the SN method. When sodium citrate solution was applied to this method, the fibrinogen determined. was lower in level than that determined by the method with any one of the seven anticoagulants. The SN method was applicable to the veterinary practice, since it required a shorter time and simpler techniques for determination than the tyrosine method.
In Fukuoka Prefecture inclusion body hepatitis (IBH) broke out exclusively among chicks originated from Hatchery R. It became under control when no chicks were introduced from this hatchery. Then it broke out among chicks derived from a flock of breeding hens in Area S of Saga Prefecture. These hens presented no changes in the rate of laying, fertilized eggs, or hatchability of eggs, as compared with others of the same breed. They were positive for adenovirus antibody (AA) and negative for antibody against the virus of disease of the bursa of Fabricius (AF). The chicks originated from them were positive for AA and AF in flocks involved in the outbreak, and positive or negative for AA and negative for AF in flocks free from IBH. It was clarified that chicks originated from breeding hens possessing no AF suffered from IBH when infected with the two viruses mentioned above.