Zobrazeno 1 - 10
of 177
pro vyhledávání: '"Todd F. Duffield"'
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 4, Pp 2819-2829 (2023)
ABSTRACT: The objective of this observational study was to assess the relationship between herd-level prevalence of hyperketolactia (HPH) with management practices of the transition period and herd milk production. Dairy herds (n = 71) were selected
Externí odkaz:
https://doaj.org/article/6a80506139864ac595ec2f1cbdeb006f
Autor:
Joanne Marshall, Derek Haley, Lena Levison, David F. Kelton, Cynthia Miltenburg, Steven Roche, Todd F. Duffield
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 1, Pp 302-311 (2023)
ABSTRACT: The removal (culling) of dairy cows from the farm is a regular and required management practice. The main objectives of this study were to describe the involvement of bovine veterinarians in Ontario, Canada, in dairy cull cow management dec
Externí odkaz:
https://doaj.org/article/1ac4fdc2913d4808b42da48a25e3073d
Autor:
Cassandra N. Reedman, Todd F. Duffield, Trevor J. DeVries, Kerry D. Lissemore, Charlotte B. Winder
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 8, Pp 6809-6819 (2022)
ABSTRACT: This review synthesizes research findings on the pain and welfare of dairy calves undergoing disbudding procedures. We describe disbudding practices in North America as well as the use and perceptions of pain control for these procedures. G
Externí odkaz:
https://doaj.org/article/298ce1f3be5f4667bac6fdea3c7f334a
Autor:
Cassandra N. Reedman, Todd F. Duffield, Trevor J. DeVries, Kerry D. Lissemore, SarahJ.J. Adcock, Cassandra B. Tucker, Sarah D. Parsons, Charlotte B. Winder
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 7, Pp 6220-6239 (2022)
ABSTRACT: The objective of this study was to determine the effect of a biologically normal plane of nutrition compared with a limited plane on the primary outcome wound healing, and one dose of nonsteroidal anti-inflammatory drug (NSAID) compared wit
Externí odkaz:
https://doaj.org/article/d8db6aebe9aa4ce89e4ab346d435d70e
Autor:
Matthew B. Van Camp, Charlotte B. Winder, Diego E. Gomez, Todd F. Duffield, Natalia K. Savor, David L. Renaud
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 7, Pp 6083-6093 (2022)
ABSTRACT: The objective of this randomized clinical trial was to evaluate the effectiveness of a single application of 7% iodine tincture-based umbilical dip for preventing infection of the external umbilical structures in dairy calves. Five dairy fa
Externí odkaz:
https://doaj.org/article/b99e1887dce943a6acde0a3e7ae79823
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 2, Pp 1797-1814 (2022)
ABSTRACT: The complex and interrelated management components of dairy farming are associated with health, production, and profitability of the herd, yet there is limited objective data on current management practices of the far-off, close-up, and fre
Externí odkaz:
https://doaj.org/article/3db08d2142c2412fa32408d471c51424
Autor:
Cassandra N. Reedman, Todd F. Duffield, Trevor J. DeVries, Kerry D. Lissemore, Charlotte B. Winder
Publikováno v:
JDS Communications, Vol 2, Iss 6, Pp 376-380 (2021)
Calfhood morbidity is an important issue on commercial dairy operations, with substantial production and welfare impacts. The objective of this observational study was to evaluate potential risk factors for morbidity, including disbudding, disbudding
Externí odkaz:
https://doaj.org/article/16b753639e934908b35c325b146af266
Autor:
Joanne Marshall, Derek Haley, Lena Levison, David F. Kelton, Cynthia Miltenburg, Steven Roche, Todd F. Duffield
Publikováno v:
Frontiers in Veterinary Science, Vol 9 (2022)
Removal of cows from dairy cattle production is a routine and unavoidable practice of the dairy industry and is often referred to as culling. The objectives of this study were to use a survey to describe current on-farm cull cow management, farmers'
Externí odkaz:
https://doaj.org/article/ed1b009156cc4f1ba285d3d8f270ad4f
Autor:
Rita Couto Serrenho, Tony C. Bruinjé, Emma I. Morrison, David L. Renaud, Trevor J. DeVries, Todd F. Duffield, Stephen J. LeBlanc
Publikováno v:
JDS Communications, Vol 2, Iss 1, Pp 41-45 (2021)
Our objective was to validate a point-of-care handheld blood total calcium analyzer (Ca meter, CM; TD-5220 Vet Ca2+, TaiDoc, New Taipei, Taiwan) to estimate circulating Ca concentrations in postpartum dairy cows. Whole blood was collected from 251 mu
Externí odkaz:
https://doaj.org/article/8f86b01f1db841b1ab99915afe27b875
Autor:
Cassandra N. Reedman, Todd F. Duffield, Trevor J. DeVries, Kerry D. Lissemore, Charlotte B. Winder
Publikováno v:
JDS Communications, Vol 3, Iss 2, Pp 167- (2022)
Externí odkaz:
https://doaj.org/article/10b0bde4029d477e96fca039edcb3845