Technical Papers

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Some cows are more bullish than others: UBC study

Source: University of British Columbia Some calves are inherently optimistic or pessimistic, just as humans are, a new University of British Columbia study has found. Recognizing these individual personality differences is important to ensure animals are treated well, says professor Marina von Keyserlingk, who led the research team from UBC’s animal welfare program in the faculty

How do dietary protein and energy interact to impact milk protein synthesis?

Source: Alberta Milk, UCVM, Lorraine Doepel Background: Milk protein synthesis is an energy intensive process, whereby both dietary energy and protein are highly inter-related in their effect on milk protein yield. The efficiency of dietary protein capture in milk protein is stimulated by increases in energy intake, and milk and lactose yields are affected by protein

Iowa State University research finds wind farms positively impact crops

Source: Iowa State University news release Iowa State University researchers have found that wind turbines located in agricultural fields are a plus for the crops growing around them. The overall effects on crops growing in wind farms appear to be positive said Gene Takle, Iowa State agronomy professor. He has led a team of plant

A dairy herd-level study of postpartum diseases and their association with reproductive performance and culling

Source: Journal of Dairy Science J. Dubuc, J. Denis-Robichaud, Faculté de Médecine Vétérinaire, Université de Montréal, C.P. 5000, Saint-Hyacinthe, Québec, J2S 7C6, Canada ABSTRACT The objectives of this study were to quantify the herd-level prevalence of postpartum diseases in a large number of dairy farms, and to identify prevalence alarm levels of these diseases based on

Optimizing phosphorus utilization by dairy cows

Source: University of Manitoba A case study of dairy farms Team: Project Leader:  Dr. Kees Plaizier, Dept. Animal Science, Email: Co-Investigators: Dr. Kim Ominski (U of M), Dr. Emma McGeough (U of M) Industry Partner: Dairy Farmers of Manitoba Funding: UofM, PIN/MRAC, DFM Objective: To identify factors that affect how efficiently dairy cows use

Validation of On-farm Tests for Clinical Endometritis

Source: Novalait Factsheet Réjean C. Lefebvre, Émile Bouchard, Jocelyn Dubuc, Luc DesCôteaux The reproductive performance of cows is an important part of dairy farm monitoring and agricultural business profitability. Breeders have been noticing a decrease in the fertility of dairy cows for years now. Uterine infections contribute significantly to the declining fertility of dairy cattle

Association between Risk Assessment scores and milking cow Johne’s ELISA results on Ontario dairy farms  

Source: Johne’s Education & Management Assistance Program Laura Pieper, DVM, MSc, Department of Population Medicine, University of Guelph, Ontario, Canada, N1G 2W1 Ann Godkin, DVM, DVSc, Veterinary Science and Policy Group, Ontario Ministry of Agriculture and Food (OMAF), Ontario, Canada, NOB 1S0 Ulrike Sorge, DVM, MSc, PhD, DACVPM, Department of Veterinary Population Medicine, University of

Providing additional lighting after calving boosts milk production

Source: Ontario Ministry of Agriculture, Food and Rural Affairs Research at the University of Maryland sheds a different light on the photoperiod research previously conducted with milking cows. This article provides a summary of the study and explores practical ways the results can be implemented. Numerous studies with milking cows have investigated their response to

Broad-spectrum infrared thermography for use as an early detection method for digital dermatitis in dairy cattle

Source: Alberta Milk, UCVM: Herman Barkema Background: Approximately 50% of cows have foot lesions that contribute to lameness, of which 43 % are DD. DD is painful and decreases comfort, longevity, milk production and fertility. Detection of DD lesions is difficult due to manure on feet and legs of cows. Infrared thermography (IRT) detects heat

Contact with cows during the young age increases social competence and lowers the cardiac stress reaction in dairy calves

Source: Science Direct, CorneliaBuchliabAliceRaselliaRupertBruckmaiercEdnaHillmanna Highlights •Social behaviour and stress reactivity were compared in calves reared with cow-contact and calves reared with peer-contact only. •Social Isolation and confrontation (with an adult cow) tests were conducted on 29 dairy farms in Switzerland and Germany. •‘Cow-contact’ calves show more adaptive social behaviour (submission during confrontation) than calves housed in

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