Results 11 to 20 of about 16,352 (199)

Heifer inventory

, 2022
The heifer enterprise of a modern dairy operation plays a cru­cial role in health and productivity performance, cost of pro­duction and future potential.
Nguyen, Blake
core   +1 more source

Genetics of heifer puberty in two tropical beef genotypes in northern Australia and associations with heifer- and steer-production traits [PDF]

, 2009
A total of 2115 heifers from two tropical genotypes (1007 Brahman and 1108 Tropical Composite) raised in four locations in northern Australia were ovarian-scanned every 4–6 weeks to determine the age at the first-observed corpus luteum (CL) and this was ...
HM Burrow (9861773), Johnston, D. J., R. G. Holroyd, Barwick, Stephen, Williams, Patrick James, Holroyd, R G, Williams, P. J., Barwick, S. A., Burrow, H. M., Corbet, N J, D. J. Johnston, SA Barwick (9882938), Fordyce, G, G. Fordyce, Nicholas Corbet (9788879), Johnston, David, P. J. Williams, RG Holroyd (9855608), Holroyd, R. G., S. A. Barwick, Fordyce, G., DJ Johnston (9855599), PJ Williams (9876350), N. J. Corbet, H. M. Burrow, Corbet, N. J., G Fordyce (9848192), Burrow, Heather M   +27 more
core   +3 more sources

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, E.A.M. Bokkers, R. Sayers, J.P. Murphy, I.J.M. de Boer, E. Kennedy   +5 more
doaj   +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

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

The Herfindahl neutral point: A firm‐level threshold for managing market concentration with evidence from US hog packing

American Journal of Agricultural Economics, EarlyView.
Abstract This paper derives a firm‐level threshold, the Herfindahl Neutral Point, from the standard concentration index used in merger review. At this threshold, a marginal expansion leaves the index unchanged. Firms below the threshold reduce concentration when they expand; firms above it increase concentration.
Andrew J. Keller, Krishna P. Paudel
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

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

Descriptive, comparative, and functional anatomy of the facial musculature in cattle (Bos taurus)

The Anatomical Record, EarlyView.
Abstract Facial expressions can provide insight into animal emotions and pain, but no standardized system for assessing the entire facial display in cattle (Bos taurus Linnaeus) exists. The Facial Action Coding System (FACS), originally developed for humans, identifies distinct facial movements based on mimetic muscles.
Maja Söderlind, Bridget Cain, Katrina Ask, Jean‐Francois Valarcher, Elin Hernlund, Pia Haubro Andersen, Marie Rhodin   +6 more
wiley   +1 more source