Results 11 to 20 of about 72,524 (279)
Associations of calf management practices with antimicrobial use in Canadian dairy calves
Journal of Dairy Science, 2022 : The objective of this cross-sectional study was to investigate the relationship between management practices and antimicrobial use in heifer calves on Canadian dairy farms.
T. Uyama +12 more
doaj +1 more source
Pathogens, 2021 Bovine leukaemia virus (BLV), which is classified as a Deltaretrovirus, is the aetiologic agent of enzootic bovine leukosis (EBL), a chronic lymphoproliferative disorder with a worldwide distribution.
Yi-Chen Chen +4 more
doaj +1 more source
Investigation of Anaplasma marginale Seroprevalence in a Traditionally Managed Large California Beef Herd. [PDF]
, 2016 Recent observations by stakeholders suggested that ecosystem changes may be driving an increased incidence of bovine erythrocytic anaplasmosis, resulting in a reemerging cattle disease in California.
Aly, Sharif S +4 more
core +4 more sources
The Bovine Practitioner, 1994 In recent years, awareness of the prevalence of heifer mastitis has increased. More research and practical effort on farms is being devoted to heifer mastitis. Attempts to measure prevalence of mastitis in heifers have primarily utilized cultures of quarters of animals at various stages of life until their first calving.
Sears, P. M., Wilson, David J.
openaire +2 more sources
Nematode control in suckler beef cattle over their first two grazing seasons using a targeted selective treatment approach [PDF]
, 2015 peer-reviewedBackground With concerns over the development of anthelmintic resistance in cattle nematode populations, we must re-examine our approach to nematode control in cattle.
Barrett, Damien +6 more
core +1 more source
Effect of feeding single-dam or pooled colostrum on maternally derived immunity in dairy calves
Journal of Dairy Science, 2022 : The role of colostrum management in providing adequate immunological protection to neonatal calves has been widely investigated, and thresholds for colostrum quality, as well as optimum volume and timing for colostrum feeding have been established ...
J. Barry +5 more
doaj +1 more source
Comparison of the effects of high and low milk-replacer feeding regimens on health and growth of crossbred dairy heifers [PDF]
, 2019 Context: Pre-weaning growth in dairy heifers is highly dependent on the amount of milk fed. Both milk replacer (MR) and associated labour are costly, encouraging restricted milk rations and once-a-day feeding.
Johnson, Kate F. +2 more
core +2 more sources
Aligning Incentives for Contract Dairy Heifer Growth
Journal of Agricultural and Resource Economics, 2010 As dairy farms grow and specialize in milking cows, raising replacement heifers is increasingly outsourced. Perhaps the largest challenge of outsourcing the heifer enterprise involves quality, measured as milk production potential, and the possibility ...
Nicole J. Olynk, Christopher A. Wolf
doaj +1 more source
Animals, 2022 This study evaluated heifer post-weaning voluntary feed intake (g/kg BW) classification on performance and reproductive measures, as well as impacts on lifetime productivity of 519 commercial Angus beef females. Heifer post-weaning voluntary feed intake (
Krista R. Wellnitz +6 more
doaj +1 more source
Congenital Absence of a Teat in a Japanese Black Heifer
Case Reports in Veterinary Medicine, 2011 A case of Japanese Black heifer with a congenital absence of teat (athelia) was observed at Highashi-Hiroshima Agricultural High School, Hiroshima Prefecture, Japan. The heifer was born after transfer of embryo from Japanese Black cattle. The sire of the
Mohamed Elshabrawy Ghanem +2 more
doaj +1 more source