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April 2023

Volume 39Issue 2p33-116

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Published in issue: April 2023

Editorial Board

Published in issue: April 2023

Call for Submissions

Published in issue: April 2023

iii

FORAGES AND FEEDS

Original Research

Effects of frequency of concentrate supplementation on performance of early-weaned beef calves consuming annual ryegrass

Hugo M.R. Oliveira,
João M.B. Vendramini,
Jaime Garzon,
...
Igor M. Ferreira,
Elizabeth Palmer,
Philipe Moriel

Published in issue: April 2023

p33-39

HEALTH

Short Communication

Controlling bovine leukemia virus in a large dairy herd by selective culling based on diagnostic testing

Tasia M. Taxis,
Renee M. Harbowy,
Donald Niles,
Kelly R.B. Sporer,
Paul C. Bartlett

Published in issue: April 2023

p40-43

NUTRITION

Original Research

Site of infusion of a commercially available direct-fed microbial on performance and digestibility in lactating Holstein cows

K.S. Thompson,
A.G. McKeith,
C.R. Krehbiel
PAS

Published in issue: April 2023

p44-55

Open Access

Effects of dietary protein concentration and degradability on performance, carcass characteristics, net energy utilization, and metabolizable protein balance of finishing beef heifers receiving 0 or 400 mg of ractopamine hydrochloride

K.L. Samuelson,
PAS,
M.E. Hubbert,
E.R. Oosthuysen,
C.A. Löest

Published in issue: April 2023

p56-68

Open Access

PRODUCTION AND MANAGEMENT

Original Research

Effects of extended days on feed on rate of change in performance and carcass characteristics of feedlot steers and heifers and Holstein steers

M.L. Galyean,
W.T. Nichols,
M.N. Streeter,
J.P. Hutcheson

Published in issue: April 2023

p69-78

Open Access

Effects of 3-day versus 9-day whole-plant corn allocation and hay supplementation on performance, grazing preference, and ruminal fermentation of beef cows

B. Anderson,
G.B. Penner,
K. Larson,
...
D. Damiran,
M.C.S. Pereira,
H.A. Lardner

Published in issue: April 2023

p79-93

Technical Note

Infrared thermography as an alternative technique for measuring body temperature in cattle¹1Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the USDA. USDA is an equal opportunity provider and employer.

A.A. Hoffman,
N.S. Long,
J.A. Carroll,
...
J.T. Richeson,
T.C. Jackson,
K.E. Hales

Published in issue: April 2023

p94-98

Open Access

WELFARE AND BEHAVIOR

Invited Review

Invited Review: Applications of unsupervised machine learning in livestock behavior: Case studies in recovering unanticipated behavioral patterns from precision livestock farming data streams¹1This invited article resulted from the presentation given at the ARPAS Symposium, “Artificial Intelligence and Machine Learning in Dairy Production Systems,” Kansas City, Missouri, June 2022.

Catherine McVey,
Fushing Hsieh,
Diego Manriquez,
Pablo Pinedo,
Kristina Horback

Published in issue: April 2023

p99-116

Open Access

Frontmatter

"April" Cover

Published in issue: April 2023

OFC

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Popular Articles

April 2023

FORAGES AND FEEDS

Original Research

HEALTH

Short Communication

NUTRITION

Original Research

PRODUCTION AND MANAGEMENT

Original Research

Technical Note

WELFARE AND BEHAVIOR

Invited Review

Frontmatter