Results 31 to 40 of about 55,813 (284)

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, D.L. Renaud, E.I. Morrison, J.T. McClure, S.J. LeBlanc, C.B. Winder, E. de Jong, K.D. McCubbin, H.W. Barkema, S. Dufour, J. Sanchez, L.C. Heider, D.F. Kelton   +12 more
doaj   +1 more source

Preweaned heifer management on US dairy operations: Part III. Factors associated with Cryptosporidium and Giardia in preweaned dairy heifer calves.

Journal of Dairy Science, 2018
The objective of this study was to evaluate management practices and environmental factors associated with cryptosporidiosis and giardiasis in preweaned heifer calves on US dairy operations.
N. Urie, J. Lombard, C. Shivley, A. Adams, C. Kopral, M. Santín   +5 more
semanticscholar   +1 more source

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

Influence of Heifer Post-Weaning Voluntary Feed Intake Classification on Lifetime Productivity in Black Angus Beef Females

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, Cory T. Parsons, Julia M. Dafoe, Darrin L. Boss, Samuel A. Wyffels, Timothy DelCurto, Megan L. Van Emon   +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, Toshihiko Nakao, Chikako Yoshida   +2 more
doaj   +1 more source

Effect of repeated trace mineral injections on beef heifer development and reproductive performance.

Journal of Animal Science, 2017
To determine the effects of repeated trace mineral injections on heifer development and reproductive performance, commercial Angus heifers (n = 290; 199 ± 34.3 kg; 221 ± 22 d of age) were utilized in a completely randomized design.
R. Stokes, Mareah J Volk, F. Ireland, P. Gunn, D. Shike   +4 more
semanticscholar   +1 more source

Multi-omics profiling of dairy cattle oxidative stress identifies hindgut-derived Phascolarctobacterium succinatutens exhibiting antioxidant activity

npj Biofilms and Microbiomes
An imbalance between oxidative and antioxidant processes in the host can lead to excessive oxidation, a condition known as oxidative stress (OS). Although changes in the hindgut microbiota have been frequently linked to OS, the specific microbial and ...
Duo Gao, Yimin Zhuang, Shuai Liu, Boyan Ma, Yiming Xu, Hongxing Zhang, Yiliyaer Nuermaimaiti, Tianyu Chen, Guobin Hou, Wenli Guo, Jingtao You, Zhiyu Huang, Jianxin Xiao, Wei Wang, Mengmeng Li, Shengli Li, Zhijun Cao   +16 more
doaj   +1 more source

Taxas de prenhez em novilhas de corte acasaladas aos 18 e 24 meses de idade Differences in pregnancy rate of beef heifers mating at 18 and 24 months of age

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2006
Avaliaram-se os efeitos da idade de acasalamento e classe de peso sobre a taxa de prenhez (TP) de novilhas de corte Hereford (n=119) acasaladas aos 18 (18M) ou 24 meses (24M) e classificadas em leves (18ML = 260kg; 24ML = 280kg) e pesadas (18MP = 300kg ...
J.O.J. Barcellos, M.D. Silva, E.R. Prates, E.C. Costa   +3 more
doaj   +1 more source

Freeze‐dried Lactobacillus spp. improved average daily liveweight gain and reduced methane intensity in growing lambs

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Direct fed microbials (DFM) are natural and safe enteric methane mitigants for ruminant livestock systems. While previous studies have demonstrated the effect of Lactobacillus spp. on methane mitigation, challenges remain in effectively delivering DFM in extensive grazing systems. The objective of this experiment was to evaluate the
Sreemol Suthan Nair, Stephanie K Muir, S Richard O Williams, Aodán S ó Neachtain, Subhash Chandra, Pablo S Alvarez‐Hess, Long Cheng, Joe L Jacobs   +7 more
wiley   +1 more source

Core microbe Bifidobacterium in the hindgut of calves improves the growth phenotype of young hosts by regulating microbial functions and host metabolism

Microbiome
Background The growth and health of young ruminants are regulated by their gut microbiome, which can have lifelong consequences. Compared with subjective grouping, phenotypic clustering might be a more comprehensive approach to revealing the relationship
Yimin Zhuang, Duo Gao, Wen Jiang, Yiming Xu, Guanglei Liu, Guobin Hou, Tianyu Chen, Shangru Li, Siyuan Zhang, Shuai Liu, Jingjun Wang, Jianxin Xiao, Mengmeng Li, Wei Wang, Shengli Li, Zhijun Cao   +15 more
doaj   +1 more source