• Publications
  • Influence
Associations between temperament, performance and immune function in cattle entering a commercial feedlot
Behavioural, endocrine and immunological measures made at weaning or feedlot entry were examined for associations amongst them and with feedlot performance with a view to identifying predictors ofExpand
The Effect of Dexamethasone on Some Immunological Parameters in Cattle
The results indicate the potential for haematology and immune function assays to reflect elevated activity of the hypothalamic–pituitary–adrenocortical axis in cattle and Immunological parameters may provide a useful adjunct to cortisol and behavioural observations for assessing the impact of stress on the welfare of cattle. Expand
Effects of the immune system on metabolism: implications for production and disease resistance in livestock
Immunonutritional and therapeutic strategies to limit the production costs of excessive activation of the immune system are considered and the metabolic costs of resistance to internal parasites in sheep are considered. Expand
Blood cell profiles of steer progeny from parents selected for and against residual feed intake
It is doubtful that blood parameters in a blood sample taken at pasture before feedlot entry or at the start of a feed intake test can be used to predict residual feed intake of individual steers or sire progeny groups in feed intake tests. Expand
Immunosuppressive effects of Marek's disease virus (MDV) and herpesvirus of turkeys (HVT) in broiler chickens and the protective effect of HVT vaccination against MDV challenge
Vaccination with HVT provided good protection against most of the immunosuppressive effects of MDV but not against MDV-induced growth impairment and reduced responsiveness to IB vaccination, suggesting that recent Australian strains ofMDV may be evolving in virulence to overcome the protective effects of HVT. Expand
A comparison of methods for preparing enriched populations of bovine spermatogonia.
It is concluded that differential plating is a better method of recovering large numbers of type A spermatogonia for germ cell transplantation, while MACS or FACS can provide highly enriched viable type A Sertoli cells for in vitro culture. Expand
Adjusting worm egg counts for faecal moisture in sheep.
The results suggest that adjustment for faecal moisture may provide an improved estimate of FEC, and an adjustment factor developed by Gordon based on the classification ofFaecal consistency derived from the morphology of faeces is used. Expand
Cytokines in mammary lymph and milk during endotoxin-induced bovine mastitis.
The results indicate a primary role for IL-8 in the recruitment of neutrophils into the gland, and suggest that IL-1beta and TNF-alpha are not necessary forIL-8 production and release in response to endotoxin. Expand
Six costs of immunity to gastrointestinal nematode infections
  • I. Colditz
  • Biology, Medicine
  • Parasite immunology
  • 23 October 2007
This review identifies six potential costs to the host from immune activation and identifies the genetic cost which arises from a change in the capacity of offspring to express production and life‐history traits following selection for parasite resistance. Expand
Resilience in farm animals: biology, management, breeding and implications for animal welfare
It is suggested that for farm animals, husbandry practices that incorporate physical and social stressors and interactions with humans such as weaning, change of housing, and introduction to the milking parlour can be used to characterise resilience phenotypes to improve evolutionary fitness of wild species and welfare and performance of farm animals. Expand