| Comparison of the effects of PGF(2)alpha and bromocryptine in pregnant beagle bitches | Wichtel, Jeffrey; Whitacre, M. D.; Yates, D. J.; Van Camp, S. D. |
| The effect of selenium supplementation on milk selenium concentration in cattle | Ceballos, A.; Sanchez, J.; Krause, J. B.; Wichtel, Jeffrey |
| When and why prostaglandins are used in postpartum dairy cows | Wichtel, Jeffrey |
| Botulism associated with feeding alfalfa hay to horses | Wichtel, Jeffrey; Whitlock, R. H. |
| Current problems in the diagnosis and management of selenium, copper and cobalt deficiencies in grazing ruminants | Wichtel, Jeffrey; Vermunt, J. J. |
| Bull soundness evaluation | Wichtel, Jeffrey |
| Effect of selenium and a-tocopherol supplementation on postpartum reproductive function of dairy heifers at pasture | Wichtel, Jeffrey; Craigie, A. L.; Thompson, K. G.; Williamson, N. B. |
| Ovulatory responses and plasma luteinizing hormone concentrations in dairy heifers after treatment with exogenous progesterone and estradiol benzoate | Hanlon, D. W.; Williamson, N. B.; Wichtel, Jeffrey; Steffert, I. J.; Craigie, A. L.; Pfeiffer, D. U. |
| Termination of midterm pregnancy in mares using intra-allantoic dexamethasone | Wichtel, Jeffrey; Evans, L. E.; Clark, T. L. |
| Synchronized breeding programs in dairy herds | Wichtel, Jeffrey; LeBlanc, S.; DesCoteaux, L. |
| The selenium status of dairy herds in PEI | Wichtel, Jeffrey |
| Production Animal Health Management Update | Wichtel, Jeffrey |
| Synchronized breeding programs in Canadian dairy herds | Wichtel, Jeffrey; Leblanc, S.; DesCoteaux, L. |
| Reproductive performance of Holstein-Friesian cows differing genetically in live weight | Laborde, D.; Holmes, C. W.; Garcia Muniz, J. G.; Wichtel, Jeffrey |
| Taking another look at synchronization using prostaglandins | Wichtel, Jeffrey |
| A survey of attitudes and use of controlled breeding programs in dairy cattle in Canada | Wichtel, Jeffrey |
| Production Animal Health Management Update | Wichtel, Jeffrey |
| The effect of estradiol benzoate administration on estrous response and synchronized pregnancy rate in dairy heifers after treatment with exogenous progesterone | Hanlon, D. W.; Williamson, N. B.; Wichtel, Jeffrey; Steffert, I. J.; Craigie, A. L.; Pfeiffer, D. U. |
| Selenium in the horse | Wichtel, Jeffrey; Grace, N. D.; Firth, E. C. |
| Micronutrients in cattle | Wichtel, Jeffrey; Cusack, P. |
| Bone mineral density in third and radial carpal bones of exercised Thoroughbred horses | Firth, E. C.; Wichtel, Jeffrey; Delahunt, J.; Goodship, A. E.; Wilson, A. M. |
| The influence of eosin B exposure on the in vitro development of bovine embryos | Dooley, M. P.; Wichtel, Jeffrey; Plante, C.; Hopkins, S. M. |
| Effects of selenium and iodine supplementation on the growth rate, mohair production, and thyroid status of Angora goat kids | Wichtel, Jeffrey; Thompson, K. G.; Craigie, A. L.; Williamson, N. B. |
| Effects of antibiotic prophylaxis on postoperative complications after rumenotomy in cattle | Haven, M. L.; Wichtel, Jeffrey; Bristol, D. G.; Fetrow, J. F.; Spears, J. W. |
| The B Vitamins | Wichtel, Jeffrey |
| What can be done about milk off-flavour? | Wichtel, Jeffrey |
| Serving Capacity Testing of Beef Bulls | Hughes, P.; Mossman, D.; McNeil, P.; Wichtel, Jeffrey |
| Vitamin E status of ewes and lambs in Marlborough | Anderson, P. V. A.; Wichtel, Jeffrey; Cox, B. T. |
| Growth and reproduction in dairy heifers following administration of selenium pellets | Wichtel, Jeffrey; Williamson, N. B.; Craigie, A. L. |
| Short-term alteration in voluntary feed intake after selenium supplementation in Angora goat kids | Wichtel, Jeffrey; Thompson, K. G.; Craigie, A. L.; Williamson, N. B. |
| Topical administration of trace elements and vitamins in cattle | Loveridge, I. B.; Wichtel, Jeffrey; Whittem, E. L. B.; Williamson, N. B. |
| Selenium deficiency in New Zealand dairy cattle | Wichtel, Jeffrey |
| A computerized spreadsheet for use in breeding soundness examinations of bulls | Wichtel, Jeffrey |
| Comparison of milk oestrone sulphate with rectal palpation, ultrasound and farmers' observation for pregnancy diagnosis in seasonal New Zealand dairy herds | Mueller, K.; Wichtel, Jeffrey; Williamson, N. B. |
| The effect of selenium supplementation before calving on early-lactation udder health in pastured dairy heifers | Ceballos-Marquez, A.; Barkema, H. W.; Stryhn, H.; Wichtel, J. J.; Neumann, J.; Mella, A.; Kruze, J.; Espindola, M. S.; Wittwer, F. |
| Comparison of four methods of pregnancy diagnosis in seasonal dairy herds in the Manawatu | Mueller, K.; Wichtel, Jeffrey; Williamson, N. B. |
| Experience with the Maffra herd health computer program on twelve dairy farms | Wichtel, Jeffrey |
| Controlled breeding in dairy cattle | Wichtel, Jeffrey |
| Milk off flavours | Wichtel, Jeffrey |
| Selenium deficiency | Wichtel, Jeffrey |
| Vitamin E in grazing ruminants | Wichtel, Jeffrey |
| Selenium...what's new | Wichtel, Jeffrey |
| Iodine deficiency in dairy cattle | Wichtel, Jeffrey |
| Controlling the estrous cycle | Wichtel, Jeffrey |
| Selenium and vitamin E in dairy cattle | Wichtel, Jeffrey |
| Micronutrient nutrition | Wichtel, Jeffrey |
| Selenium in grazing ruminants | Wichtel, Jeffrey |
| The role of selenium and iodine metabolism in thyroid metabolism in thyroid function of calves | Wichtel, Jeffrey |
| Beef cattle growth implants - how do they work? | Wichtel, Jeffrey |
| The effect of copper supplementation on copper status of pregnant mares and their neonates | Pearce, S. G.; Grace, N. D.; Wichtel, Jeffrey; Firth, E. C.; Fennessy, P. F. |
| Galloping exercise induces regional changes in bone density within the third and radial carpal bones of thoroughbred horses | Firth, E. C.; Delahunt, J.; Wichtel, Jeffrey; Birch, H. L. Goodship, A.E. |
| The efficacy of treating anoestrous dairy cows with CIDRs | Hanlon, D. W.; Wichtel, Jeffrey; Xu, Z.; Burton, L. |
| Subclinical iodine deficiency | Wichtel, Jeffrey |
| Production Animal Update | Wichtel, Jeffrey |
| Question and answer article | Wichtel, Jeffrey |
| Bovine Trace Element Deficiencies | Wichtel, Jeffrey |
| The reproductive performance of anoestrous dairy cows following treatment with progesterone and oestradiol prior to the start of mating | Hanlon, D. W.; Wichtel, Jeffrey; Xu, Z. Z.; Burton, L. J. |
| The effect of injectable barium selenate on the selenium status of horses on pasture | Wichtel, Jeffrey; Grace, N. D.; Firth, E. C. |
| A review of selenium deficiency in grazing ruminants. Part 2 | Wichtel, Jeffrey |
| A review of selenium deficiency in grazing ruminants. Part 1 | Wichtel, Jeffrey |
| Micronutrient research | Wichtel, Jeffrey |
| A longitudinal study of Neospora caninum infection on a dairy farm in New Zealand | Pfeiffer, D. U.; Williamson, N. B.; Reichel, M. P.; Wichtel, Jeffrey; Teague, W. R. |
| Effect of copper supplementation on the copper status of pasture-fed young Thoroughbreds | Pearce, S. G.; Grace, N. D.; Firth, E. C.; Wichtel, Jeffrey; Holle, S. A.; Fennessy, P. F. |
| Re-insertion of a progesterone-containing intravaginal device to synchronise returns to oestrus in dairy heifers | Hanlon, D. W.; Williamson, N. B.; Steffert, I. J.; Wichtel, Jeffrey; Pfeiffer, D. U. |
| Effect of selenium and lodine supplementation on growth rate and on thyroid and somatotropic function in dairy calves at pasture | Wichtel, Jeffrey; Craigie, A. L.; Freeman, D. A.; Varela-Alvarez, H.; Williamson, N. B. |
| Serum glutathione peroxidase activity reflects short-term increases in selenium intake in goats | Wichtel, Jeffrey; Thompson, K. G.; Williamson, N. B. |
| Alpha-tocopherol, selenium and polyunsaturated fatty acid concentrations in the serum and feed of spring-calving dairy heifers | Wichtel, Jeffrey; Freeman, D. A.; Craigie, A. L.; Varela-Alvarez, H.; Williamson, N. B. |
| The effect of intra-ruminal selenium pellets on growth rate, lactation and reproductive efficiency in dairy cattle | Wichtel, Jeffrey; Craigie, A. L.; Varela-Alvarez, H.; Williamson, N. B. |
| Nonsurgical treatment of uterine torsion in seven mares | Wichtel, Jeffrey; Reinertson, E. L.; Clark, T. L. |
| Management, productivity and livelihood effects on Kenyan smallholder dairy farms from interventions addressing animal health and nutrition and milk quality | VanLeeuwen, J. A.; Mellish, T.; Walton, C.; Kaniaru, A.; Gitau, R.; Mellish, K.; Maina, B.; Wichtel, J. |
| Interaction between plane of nutrition and success of estrus synchronization using two methods | Charmley, E.; Wichtel, Jeffrey; Richardson, Gavin F.; Lofstedt, Robert M. |
| Seroprevalence, spacial distribution and productivity effects of infection with Johne's disease and bovine leukosis in Maritime Canadian dairy cattle | VanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey |
| Seroprevalence, spatial distribution, & productivity effects of infection with BLV & MAP in Canadian dairy cattle | VanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey |
| Effect of age on systemic antibody response following rabies and influenza vaccinations in healthy horses | Muirhead, T.; McClure, J. Trenton; Wichtel, Jeffrey; McFarlane, D.; Lunn, D. P. |
| Differential gene expression in response to changes in magnesium intake in the horse | Wichtel, Maureen; Power, S.; Quamme, G.; Hale, Lawrence R.; Wichtel, Jeffrey |
| Evaluation of extended therapy with pirlamycin hydrochloride for S. aureus mastitis | Keefe, Gregory P.; VanLeeuwen, John A.; Wichtel, Jeffrey |
| The effects of synchronization method and postpartum energy intake on reproductive performance following timed artificial insemination in beef cows | Wichtel, Jeffrey; Richardson, Gavin F.; Charmley, E.; Lofstedt, Robert M. |
| Seroprevalence of production limiting diseases in the Maritimes--an update | VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey |
| Effect of age on systemic antibody response following rabies and influenza vaccinations in healthy horses. | Muirhead, T.; McClure, J. T.; Wichtel, J.; McFarlane, D.; Lunn, D. P. |
| The interaction between plane of nutrition and the success of estrus synchronization using two methods | Charmley, E.; Wichtel, Jeffrey; Richardson, Gavin F.; Lofstedt, Robert M. |
| Effect of feeding baled grass silage on the sensory characteristics and the volatile fraction of raw milk | Wichtel, Jeffrey; Bossett, J. O.; Dohoo, Ian R.; Stryn, H.; Mounchili, Aboubakar |
| Oral melengestrol acetate treatment for out-of-season breeding in the sheep possessing an extended breeding season | Wichtel, Jeffrey; Keefe, Gregory P.; Riley, Christopher B. |
| JD - prevalence in the Maritime provinces | VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey |
| Seroprevalence of paratuberculosis in the Maritimes | VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey |
| Effect of post-partum energy intake by beef cow on reporductive performance following timed AI by two methods | Charmley, E.; Wichtel, Jeffrey; Duynisveld, J. L.; Richardson, Gavin F. |
| Seroprevalence of production limiting diseases in Ontario and Maritime dairy cattle | VanLeeuwen, John A.; Tremblay, R.; Keefe, Gregory P.; Wichtel, Jeffrey |
| Barium selenate supplementation and its effect on intramammary infection in pasture-based dairy cows | Ceballos, A.; Kruze, J.; Barkema, H. W.; Dohoo, I. R.; Sanchez, J.; Uribe, D.; Wichtel, J. J.; Wittwer, F. |
| Meta-analysis of the effect of oral selenium supplementation on milk selenium concentration in cattle | Ceballos, A.; Sánchez, J.; Stryhn, H.; Montgomery, J. B.; Barkema, H. W.; Wichtel, J. J. |
| Timed AI in beef herds using CIDRs or Ovsynch | Wichtel, Jeffrey; Charmley, E.; Richardson, Gavin F.; Lofstedt, Robert M. |
| Reproductive performance following timed artificial insemination in silage-fed beef cows | Wichtel, Jeffrey; Charmley, E.; Richardson, Gavin F.; Lofstedt, Robert M. |
| Timed AI in beef herds using CIDRs or Ovsynch | Wichtel, Jeffrey; Charmley, E.; Richardson, Gavin F.; Lofstedt, Robert M. |
| Controlling the estrous cycle - old and new techniques | Wichtel, Jeffrey; Charmley, E.; Richardson, Gavin F.; Lofstedt, Robert M. |
| Milk off-flavour research in Prince Edward Island | Mounchili, Aboubakar; Wichtel, Jeffrey |
| The selenium and vitamin E status of horses in Prince Edward Island | Muirhead, Tammy L.; Wichtel, Jeffrey J.; Stryhn, Henrik; McClure, J. Trenton |
| Seroprevalence of infection with Mycobacterium avium subspecies paratuberculosis, bovine leukemia virus, and bovine viral diarrhea virus in maritime Canada dairy cattle | VanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey |
| Geographical and temporal aspects of an outbreak of off-flavours in bulk-tank milk in Prince Edward Island, Canada | Mounchili, Aboubakar; Wichtel, Jeffrey; Sanchez, J. |
| Septicaemia and septic arthritis in a neonatal calf caused by Lactococcus lactis | Wichtel, Maureen; Fenwick, S. G.; Hunter, J.; Stephenson, A.; Martin, D.; Wichtel, Jeffrey |
| Evaluation of melengestrol acetate and equine chorionic gonadotropin for out-of-season breeding in sheep on Prince Edward Island | Keefe, Gregory P.; Wichtel, Jeffrey |
| The efficacy of selenium treatment of forage for the correction of selenium deficiency in horses | Montgomery, Julia B.; Wichtel, Jeffrey J.; Wichtel, Maureen G.; McNiven, Mary A.; McClure, J.T. |
| Observational study assessing the significance of nutritioinal and management factors associated with MUN levels during the non-grazing season | Leger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A. |
| Observational study of factors associated with seasional variation in milk urea nitrogen observed on intensively and extensively managed pastures, during the summer 2000 grazing period in Prince Edward Island, Canada | Leger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A. |
| HS-SPME gas chromatographic characterization of volatile compounds in milk tainted with off-flavour | Mounchili, Aboubakar; Wichtel, Jeffrey; Bosset, J. O.; Dohoo, Ian R.; Imhof, M.; Altieri, D.; Mallia, S.; Stryhn, Henrik E. |
| Observational study of factors associated with seasonal variation in MUN observed on intensively managed pastures during the summer 2000 grazing season, in PEI, Canada | Leger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A. |
| Preliminary results of an observational study describing the relationship between milk urea nitrogen and pasture management in Prince Edward Island dairy herds | Leger, E.; Arunvipas, P.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Wichtel, Jeffrey |
| The association between bulk tank milk analysis for raw milk quality and on-farm management practices | Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Wichtel, J. J.; Stryhn, H.; Dingwell, R. T. |
| Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herds | Ceballos-Marquez, A.; Barkema, H. W.; Stryhn, H.; Dohoo, I. R.; Keefe, G. P.; Wichtel, J. J. |
| Risk factors for milk off-flavours in dairy herds from Prince Edward Island, Canada | Mounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; Halliday, L. J. |
| Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herds | Ceballos-Marquez, Alejandro; Barkema, Herman W.; Stryhn, Henrik; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey J. |
| Prevalence of infectious diseases in Maritime dairy cattle | VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey; Ogilvie, Timothy H.; Spangler, Elizabeth |
| Off-flavours in bulk milk in Prince Edward Island dairy farms | Mounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Halliday, L. J. |
| The effect of age on the immune response of horses to vaccination in proceedings of the second Merial European comparative vaccinology symposium : vaccination challenges in ageing populations | Muirhead, T. L.; McClure, J. T.; Wichtel, J. J.; Stryhn, H.; Markham, R. J. F.; McFarlane, D.; Lunn, D. P. |
| Effects of selenium source on measures of selenium status and immune function in horses | Montgomery, J. B.; Wichtel, J. J.; Wichtel, M. G.; McNiven, M. A.; McClure, J. T.; Markham, F.; Horohov, D. W. |
| The PEI Milk Off-flavours Project 2001-2004. For the Dairy Farmers of PEI, April 2005 | Wichtel, Jeffrey; Mounchili, Aboubakar; Halliday, L. J.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.; Gao, Lingjuan; McNiven, Mary A.; Sampson, R. |
| Transmitted flavours in milk in PEI dairy herds | Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, L.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T. |
| Sensory evaluation and factors associated with transmitted flavours in milk in PEI dairy herds | Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, L.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T. |
| Transmitted flavours in milk in PEI dairy herds | Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, L.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T. |
| The selenium status of lactating cows in Prince Edward Island | Wichtel, Jeffrey; VanLeeuwen, John A.; Keefe, Gregory P.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H. |
| The Selenium Status of Dairy Herds in Prince Edward Island. | Wichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H. |
| Effect of selenium source on selenium status and immune function in horses | Montgomery, J.; Wichtel, M.; Wichtel, J.; McNiven, M.; Markham, F.; Sheppard, J.; McClure, J. |
| Factors associated with off-flavors in milk from PEI dairy herds | Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, A.; Sampson, R.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T. |
| Selenium in dairy cows in PEI | Wichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H. |
| Off-flavours in unpasteurized milk in PEI dairy herds | Mounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.; Halliday, L.; Sampson, R. |
| The selenium status of dairy herds in Prince Edward Island | Wichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H. |
| The effect of age on serum antibody titers after rabies and influenza vaccination in healthy horses | Muirhead, T. L.; McClure, J. T.; Wichtel, J. J.; Stryhn, H.; Markham, R. J. Frederick; McFarlane, D.; Lunn, D. P. |
| The efficacy of selenium treatment of forage for the correction of selenium deficiency in horses | Montgomery, Julia B.; Wichtel, Jeffrey J.; Wichtel, Maureen G.; McNiven, Mary A.; , |
| Original research | Montgomery, Julia B.; Wichtel, Jeffrey J.; Wichtel, Maureen G.; McNiven, Mary A.; , ; Markham, Fred; Horohov, David W. |
| Investigations into the epidemiology of Neospora caninum infection in dairy cattle in New Zealand | Pfeiffer, D. U.; Wichtel, Jeffrey; Reichel, M.; Williamson, N. B.; Teague, W. R.; Thornton, R. N. |