Search PubMed⌕ Search

Biomedical subjects

D R Wise

Publications and source records attributed to D R Wise.

At least 37 records · Page 2Linked to original sources
PubMed1975

Studies on tibial dyschondroplasia in ducks.

A high incidence of tibial dyschondroplasia was present naturally in a variety of strains of ducks. The incidence was higher in heavy strains than in light strains and both incidence and severity were markedly reduced by early restriction of growth rate. The incidence and severity differed somewhat in groups of ducks of the same strain and growing at the same rate on two different commercial rations. The abnormality was not dramatically reduced by feeding a ration containing a high bicarbonate mineral mix. The histological development of the lesion is described and possible aetiologies discussed. Despite the high incidence, tibial dyschondroplasia seldom caused significant economic loss.

Animal Feed↗
PubMed1975

Experimental reproduction of turkey syndrome 65 with Mycoplasma meleagridis and M gallisepticum and associated changes in serum protein characteristics.

Groups of one-day-old turkeys were infected with two isolates of Mycoplasma meleagridis and one of M gallisepticum. The experiment was terminated at three weeks of age when the incidence of TS65 in the three groups were 32, 24 and 82 per cent respectively. The development of TS65 in the M meleagridis-infected groups was not accompanied by dramatic falls of serum albumin levels thus invalidating the hypothesis that low serum albumin concentration is a primary factor in the development of TS65.

Animals↗
PubMed1975

Efficacy trials in turkey poults with tylosin tartrate against Mycoplasma gallisepticum and Mycoplasma meleagridis.

Tylosin tartrate, administered in the drinking water at a concentration of 0.55 g/litre for the first three days after hatching, was highly effective in controlling the adverse consequences of a Mycoplasma gallisepticum infection, established by air sac injection at one day of age, in turkey poults. Tylosin was ineffective in controlling M meleagridis infections established in embryo or at one day of age when administered in the drinking water of poults. Both mycoplasma isolates used were inhibited in vitro by a tylosin concentration of 0.1 mug/ml.

Animals↗
PubMed1975

Turkey syndrome 65, oedema syndrome and Mycoplasma meleagridis.

Comparisons of liver histology and serum protein characteristics from cases of oedema syndrome and from poults with Mycoplasma meleagridis induced ascites revealed that the two conditions, though presenting grossly similar post mortem appearances, are different entities. Serum albumin concentrations, but not total serum protein levels, were markedly reduced in poults with M meleagridis induced ascites and in those with turkey syndrome 65. Poults which were infected with M meleagridis but which failed to develop either of these conditions had more normal serum protein characteristics. It is argued that M meleagridis induced ascites may be an acute manifestation of a pathological process of which TS65 is the chronic form. It is also suggested that low serum albumin concentrations may play a primary role in the pathogenesis of TS65.

Air Sacs↗