Both growth-inhibitory and growth-stimulatory factors were detected in vitro in medium from chemotactically stimulated cultures of lung lavage cells. The macrophage component of the lavage cells was found to produce a growth stimulatory factor that was replaced by a growth inhibitory factor following chemotactic factor stimulation.

Footrot is a widespread, infectious cause of lameness in sheep, with major economic and welfare costs. The aims of this research were: (i) to quantify how veterinary surgeons' beliefs regarding the efficacy of two treatments for footrot changed following a review of the evidence (ii) to obtain a consensus opinion following group discussions (iii) to capture complementary qualitative data to pla...

Ammonia can accumulate in highly stocked sheep accommodation, for example during live export shipments, and could affect sheep health and welfare. Thus, the objective of this experiment was to test the effects of 4 NH(3) concentrations, 4 (control), 12, 21, and 34 mg/m(3), on the physiology and behavior of wether sheep. Sheep were held for 12 d under a micro-climate and stocking density similar...

The ability of three commercially available trap types to catch Lucilia (Diptera: Calliphoridae) blowflies was assessed on three sheep farms in southwest England in 2008. The aim was to evaluate their relative value for the control of ovine cutaneous myiasis (sheep blowfly strike) on farms. There was a highly significant difference between the total number of female Lucilia caught per day by th...

A study was conducted to determine the prevalence of ovine fasciolosis in Debre Berhan region based on clinical, abattoir and field survey from November 2007 to March 2008. Of total 475 ovine faucal samples examined 229 (48.21%) positive for fasciolosis. Sex wise Prevalence off sciolosis 73.05% in male and 26.95% in female animals. Statistical analysis of prevalence rate on sex basis showed no ...

Sheep-associated malignant catarrhal fever (SA-MCF), caused by ovine gammaherpesvirus-2 (OvHV-2), is a fatal disease in all ruminants. The epidemiological survey and molecular characterization of OvHV-2 in Mongolian livestock were performed. Of 928 blood samples, 14 were positive for OvHV-2 in sheep and native cattle from Tsenkher County and in sheep from Lun County. Phylogenetic analyses revea...

A brief description is given of the discovery of retroviral and cellular oncogenes and of their putative role in oncogenesis. Attempts to apply the biotechnological techniques that were so successful in the study of other retroviruses to the newly-discovered jaagsiekte retrovirus are briefly reviewed.

Beriajaya 1 and D. B. Copeman 1 1 Research Institute for Veterinary Science, P.O. Box 52, Bogor 16114, Indonesia 2 Department of Microbiology and Immunology, James Cook University, Townsville 4811, Australia _____________________________________________________________________ ABSTRACT: Observations on factors affecting survival of ovine nematode larvae on pasture were made in a lowland wet equ...

Method Porcine cardiac xenografts were treated by decellularization, immunologic modification with alpha-galactosidase, space filler, GA fixation in organic solvent, and detoxification. The nitinol (Nikel-Titanium, shape memory alloy) frame is comprised of a braided wire that reverts to its original shape and locks the valve into position as deployed. We manufactured the stented valve with the ...

Pulmonary intravascular macrophages (PIMs) are mononuclear cells found apposed to the lung capillary endothelium in a number of mammalian species. Although first described in the 1970s, it was not until the 1980s that they were more completely described. In several species of veterinary interest (bovine, porcine, ovine, and feline), PIMs are very important in blood clearance, which is not the c...