Now showing items 1-10 of 60
Strategic use of anthelmintics for parasitic nematodes in cattle and sheep
Treatment regimes for the control of parasitic nematodes in cattle and sheep are reviewed. The advantages and disadvantages of each strategy are outlined and the veterinarian's judgement of the management and economic ...
The pharmacodynamics of ivermectin in sheep and cattle
The concentrations of ivermectin in the gastrointestinal tract of sheep and cattle were determined after subcutaneous administration of ivermectin. Ivermectin was not detected (limit of detection 1 ng/ml) in abomasal and ...
An H I absorption line survey of Messier 31
The 21-cm absorption through the disk of M31 has been observed, using the VLA to study the cool atomic phase of the interstellar medium in this nearby spiral galaxy. It is found that the abundance of diffuse clouds with ...
Eyespot disease of cereal
Eyespot (Pseudocercosporella herpotrichoides ), a serious disease of winter wheat and barley, has increased in importance in the 1980s because I) pathogen populations have become resistant to the fungicides which were used ...
Production of strains of the sheep parasite Ostertagia circumcincta by implantation of adult parasites into the abomasum of lambs
The implantation of a single pair of adult parasites of Ostertagia circumcincta via the abomasa of four lambs resulted in the production of 19, 53, 393 and 425 viable larvae after faecal culture using faeces collected from ...
Observations on the pathogenicity of pasteuria-penetrans, a parasite of root-knot nematodes
A simple test was used to determine whether or not Pasteuria penetrans spores would attach to 17 species of nematodes. All susceptible individuals had spores attached to their cuticles after 24 h of gentle agitation in ...