Results 81 to 90 of about 40,862 (248)

Loss of Stability for Blood Urea Nitrogen in Cattle Serum Samples Stored for 3 and 6 Months at −20°C and −80°C

Veterinary Clinical Pathology, EarlyView.
ABSTRACT Background Biological samples are stored for delayed or add‐on analyses. However, storage conditions, including time and temperature, can affect the stability of measurands in the samples. Objectives To assess the stability of blood urea nitrogen (BUN) in cattle serum samples.
I. Lizarraga, P. Reid, K. Wieliczko, J. Beeler‐Marfisi, F. Castillo‐Alcala   +4 more
wiley   +1 more source

Management of Spayed Heifers

, 2000
The practice of spaying (ovariectomizing) heifers that are destined for market has been used by cattle producers in the United States for more than 100 years.
Rupp, Gary P., Hamilton, Edward D.
core   +1 more source

Metabolic and reproductive characteristics of replacement beef heifers subjected to an early-weaning regimen involving high-concentrate feeding

Animal, 2017
In an effort to better understand the consequences of early weaning (EW) for replacement beef heifers, a two-phase experiment was conducted investigating the impact on metabolic function and documenting reproductive characteristics.
A.L. Zezeski, V.L. McCracken, R.K. Poole, A. Al Naib, J.K. Smith, M.A. McCann, M.L. Rhoads   +6 more
doaj   +1 more source

Construction and Operation of a Respiration Chamber of the Head-Box Type for Methane Measurement from Cattle

Animals, 2020
This paper aims to describe the construction and operation of a respiration chamber of the head-box type for methane (CH4) measurements in bovines. The system consists of (1) a head box with a stainless steel frame and acrylic walls, floor, and ceiling; (
Octavio Alonso Castelán Ortega, Paulina Elizabeth Pedraza Beltrán, Gloria Stefanny Hernández Pineda, Mohammed Benaouda, Manuel González Ronquillo, Luisa T Molina, Juan Carlos Ku Vera, Hugo Daniel Montelongo Pérez, María Fernanda Vázquez Carrillo   +8 more
doaj   +1 more source

Brucella abortus RB51 Persistent Infection and Milk Shedding in Vaccinated Dairy Cattle: A Public Health Risk

Zoonoses and Public Health, EarlyView.
ABSTRACT Introduction Brucellosis, caused by a group of bacteria within the genus Brucella, is a zoonotic disease of significant public health concern. The RB51 strain vaccine is used to combat cattle brucellosis but has potential health consequences for exposed humans.
Elizabeth S. Hines, Sara F. Margrey, Stephanie W. Cox, Christine Quance, Tyler C. Thacker, Patricia L. Collins, Susan Rollo, Leslie L. Bulaga‐Seraphin, Aimee Hunt, Gary Stevens, Kyran Cadmus, Maria Negron, Grishma Kharod, Rebekah Tiller, Suelee Robbe‐Austerman, Jason E. Lombard   +15 more
wiley   +1 more source

Nutrition, Growth, and Age at Puberty in Heifers

Animals
Puberty onset and age at first calving have a critical impact on livestock production for good reproductive efficiency of the herd and to reduce the duration of the non-productive stage of the growing heifer. Besides genetic factors, sexual maturation is
Francesco Fantuz, Antonella Fatica, Elisabetta Salimei, Fausto Marcantoni, Luca Todini   +4 more
doaj   +1 more source

Safe and Stable Germline Transmission of MSTN Mutations in Cattle

Animal Genetics, Volume 57, Issue 5, October 2026.
ABSTRACT With the global population expected to reach 10 billion by 2050, sustainable livestock production is critical. Gene editing of the myostatin (MSTN) gene represents a promising strategy to enhance muscle growth in cattle. In this study, MSTN‐mutated founder (F0) cows were used to generate F1 offspring via ovum pick‐up, in vitro fertilization ...
Gyeong‐Min Gim, Bae Young Choi, Jeongbin Yi, Kyeong‐Hyeon Eom, Soo‐Young Yum, Dae‐Jin Jung, Do‐Yoon Kim, Bokyoung Yang, Jong‐Seo Kim, Donghwan Shim, Goo Jang   +10 more
wiley   +1 more source

The Affect of Animal Gender on Fed Cattle Producer Marketing Behavior [PDF]

Weekly grid market share by volume for slaughter steers is compared to slaughter heifers. Summary statistics indicate average grid market share for steers (42%) is 27% higher than slaughter heifers (33%).
Lange, Brent, Diersen, Matthew A., Li, Jing, Qasmi, Bashir A., Fausti, Scott W.   +4 more
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Introduced dung beetles suppress methane emissions from cattle dung and alter the temporal dynamics of greenhouse gas flux Los escarabajos peloteros introducidos suprimen las emisiones de metano del estiércol de ganado y alteran la dinámica temporal del flujo de gases de efecto invernadero Besouros coprófagos introduzidos suprimem as emissões de metano do esterco bovino e alteram a dinâmica temporal do fluxo de gases de efeito estufa

Ecological Entomology, Volume 51, Issue 5, Page 1025-1035, October 2026.
Dung beetles suppressed cumulative methane flux from cattle dung by 85% and reduced total greenhouse gas emissions by 18%. Beetle activity accelerated initial CO2 release but did not alter total cumulative flux. N2O and NH3 fluxes were transient and not consistently driven by beetle presence.
Jean Holley, Martin Brummell, Nigel R. Andrew   +2 more
wiley   +1 more source

Production and economic traits of purebreed and crossbred animals in diary herds of mountain areas [PDF]

, 2013
Beef production from dairy herds represents an alternative source to improve the farm profitability. The use of beef semen to mate cattle not destined to breed replacement represent an interesting source of income for dairy farmers particularly due to ...
Bazzoli, Ilario
core