Technical Papers

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Prevalence of lameness and associated risk factors in Canadian Holstein-Friesian cows housed in freestall barns

Source: Engormix Dairy Cattle, Author/s : L. Solano *, H. W. Barkema *, E. A. Pajor *, S. Mason *, S. J. LeBlanc †, J. C. Zaffino Heyerhoff †, C. G. R. Nash †, D. B. Haley †, E. Vasseur ‡, D. Pellerin §, J. Rushen #, A. M. de Passillé #, and K. Orsel *

Embracing Oregano Oil in Feed Supplements

Source: RopaPharm When you think of oregano, what comes to mind? For most, oregano is thought to be a popular all-natu- ral spice used in a variety of dishes for human consumption. But thanks to the innovations by leading Dutch investment banker, Paul Mensink, oregano oil has proven to be active component of natural animal

Simplifying the Cosynch Protocol While Achieving Acceptable Pregnancy Rates in heifers

Source: Alberta Agriculture and Forestry, The Cosynch protocol is a modified ovulation synchronization protocol which involves an initial dose of gonadotropin-releasing hormone (GnRH), followed by prostaglandin F2α (PGF) 7 days later, and then a second dose of GnRH approximately 3 days later at the same time as artificial insemination (AI). This method reduces the number

Assessment of visceral pain associated with metritis in dairy cows

Source: Journal of Dairy Science, J.Stojkov*M.A.G.von Keyserlingk*J.N.Marchant-Forde†D.M.Weary* Abstract Metritis is a common disease in dairy cattle, but to our knowledge, no work has assessed pain associated with this disease. Tissue palpation is commonly used to assess pain in human and veterinary medicine. The objective of this study was to evaluate visceral pain responses during rectal palpation, with

Effectiveness of a standardized footbath protocol in the prevention of bovine digital dermatitis on dairy farms in Alberta

Source: Alberta Milk, UCVM, Karin Orsel Background: Digital dermatitis is an ulcerative lesion that tend to be painful, causing lameness, and thus compromise animal welfare and can decrease milk production and increase culling and treatment costs. Previously, DD was found to be present on 98% of the 86 farms studied and affected an average of 28%

A new trial at Cornell University shows low subclinical hypocalcemia levels in dairy cows supplemented with a calcium binder.

Source: X-zelit Cornell University tested the efficiency of a calcium binder (X-Zelit®) for preventing hypocalcemia. Feeding low level calcium in the prepartum diet has shown to be effective in improving the calcium level at calving. However, as this is difficult to obtain using the commonly used feeds, binding the dietary calcium using X-Zelit can mimic

Evaluating the Cost Effectiveness of Feed Additives

  Source: Western Canadian Dairy Seminar: David Galligan, University of Pennsylvania, School of Veterinary Medicine, Email: Take Home Messages Economic evaluation must be done on a marginal basis. Management must understand all the dimensions of production affected. Improved feed efficiency (digestion) and/or the dilution of animal nutrient maintenance requirements. Management must understand all the direct and

Lack of behavioural change during estrus in tie-stall housed cows limits pedometer efficacy

Source: Alberta Agriculture and Forestry, The Importance of Estrus Detection The accurate and efficient detection of estrus is essential in improving the performance of dairy herds and maximizing producer profits; over $300 million is lost in the US annually due to shortcomings in this important aspect of reproductive management. Although the behavioural changes that characterize


Source: University of British Columbia Want smarter cows? Try raising calves with social companions. Previous work from the UBC Dairy Education and Research Centre demonstrated that calves raised in individual pens had more difficulty adapting to a group pen with five other calves after weaning than calves raised in pairs did. The more barren environment

Effects of feeding sugar on mitigation of rumen acidosis

Source: Alberta Milk, U of A: Masahito Oba Background: Rumen acidosis is a persistent metabolic disorder for high-producing dairy cows; the effort to increase the diet fermentability to increase milk yield is often associated with rumen acidosis and milk fat depression. Feeding high sugar diets can be a novel nutritional approach to increase milk yield without

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