INVESTIGATION OF SHEEP DIPS

Groups of 30 sheep of four breeds (Merino, Dorset Horn, Romney Marsh and Border Leicester), that had been maintained under the same environmental and nutritional conditions were used in showering experiments with a diazinon emulsion. The fleeces of all breeds stripped (or depleted) diazinon from the dipping fluid. Diazinon was not deposited evenly down the length of the wool staple. On the Merino fleece, more diazinon was deposited on the outer section and less on the inner section near the skin. On the other breeds, more diazinon was found in the inner and less on the outer sections. Differences in the magnitude and location of the diazinon deposits are discussed, with the aid of supplementary in vitro dipping experiments, in relation to the compactness of the fleece and the amounts and distribution of wax, suint and dirt found there.     

Haematological and biochemical findings in bovine post-parturient haemoglobinuria and the accompanying Heinz-body anaemia

Sarcocysts morphologically similar to Sarcocystis muris were observed in the skeletal muscles of mice dosed with free isosporan sporocysts recovered from the faeces of naturally infected cats. Kittens fed these mice shed similar sporocysts measuring 8.7 ±0.1 x 10.8 ±0.1 μm in their faeces five to six days later. Feeding these sporocysts to mice and rats resulted in the formation of identical sarcocysts in mice, but not rats. Attempts to induce similar infections in mice using naturally acquired isolates of I. felis were unsuccessful.