Results 51 to 60 of about 336,156 (254)

Forward‐looking breakeven cattle feeding conditions in futures markets

Journal of the Agricultural and Applied Economics Association, EarlyView.
Abstract This study uses cointegration analysis and a vector error correction model to determine the long‐run cointegrating equation among feeder cattle, corn, and live cattle futures prices. Assuming that the cointegrating equation is reflective of breakeven conditions in cattle feeding, disturbances from the equation are defined as expected profit in
Brian K. Coffey
wiley   +1 more source

Effects of herd management decisions on dairy cow longevity, farm profitability, and emissions of enteric methane – a simulation study of milk and beef production

Animal
Sustainable dairy and beef production provides environmental, economic, and social values that can potentially be maximized by optimizing herd management strategies.
J.B. Clasen, W.F. Fikse, M. Ramin, M. Lindberg   +3 more
doaj   +1 more source

Identification of quantitative trait loci and associated candidate genes for pregnancy success in Angus–Brahman crossbred heifers

Journal of Animal Science and Biotechnology, 2023
Background In beef cattle, more than 50% of the energy input to produce a unit of beef is consumed by the female that produced the calf. Development of genomic tools to identify females with high genetic merit for reproductive function could increase the
Quinn A. Hoorn, Gabriel A. Zayas, Eduardo E. Rodriguez, Laura M. Jensen, Raluca G. Mateescu, Peter J. Hansen   +5 more
doaj   +1 more source

Sensorial and nutritional qualities of muscles from cross‐bred Salers heifers raised on mid‐mountain pasture

JSFA reports, EarlyView.
Abstract Background This study investigated the effects of crossbreeding, finishing system, and muscle type on carcass characteristics, intramuscular fat (IMF), image‐based IMF estimation, fatty acid composition, and meat quality in beef heifers. Charolais × Salers (C × S) and Angus × Salers (A × S) crossbred heifers were finished either on pasture or ...
Dominique Gruffat, Marie‐Pierre Ellies‐Oury, Donato Anduéza, Brigitte Picard, Bernard Sepchat, Laurent Larraillet, Bruno Meunier, Muriel Bonnet   +7 more
wiley   +1 more source

Live Animal Ultrasound Information as a Decision Tool in Replacement Beef Heifer Programs [PDF]

Real-time ultrasound information taken on beef heifers prior to backgrounding is used to develop a logit model to aid heifer retention decisions. The value of ultrasound data is calculated as the difference in certainty equivalents between a decision ...
Vann, Rhonda C., Willard, Scott T., Anderson, John D., Dos Santos, Alecsandro   +3 more
core   +2 more sources

Nutritional parameters and production of calves on pasture supplemented with different sources of protein foods

Semina: Ciências Agrárias, 2014
The aim of this study was to evaluate the effects of multiple supplements with different protein sources on the performance, intake, nutrient digestibility, and microbial protein production efficiency of lactating beef heifers under grazing.
David Contreras Marquez , Mário Fonseca Paulino , Marcos Inácio Marcondes , Luciana Navajas Rennó , Livia Vieira de Barros , Leandro Soares Martins , Roman Maza Ortega , Aline Gomes da Silva , Daniel Mageste de Almeida , Deilen Paff Sotelo , Felipe Henrique Moura   +10 more
doaj   +1 more source

Evaluation of a modified GnRH-based timed-AI protocol associated with estrus detection in beef heifers inseminated with sex-selected or conventional semen.

Theriogenology, 2018
The main objective was to compare pregnancy per AI (P/AI) between sex-selected and conventional semen in cyclic beef heifers subjected to a 5-day Co-synch plus CIDR protocol and evaluated the usefulness of an estrus detection (ED) aid to identify heifers
M. Colazo, P. Whittaker, K. Macmillan, D. Bignell, G. Boender, R. de Carvalho Guimaraes, R. Mapletoft   +6 more
semanticscholar   +1 more source

Temporal and seasonal trends of bovine tuberculosis in the Irish cattle population (2008–2024)

Veterinary Record, EarlyView.
Abstract Background Bovine tuberculosis (bTB) has substantial impacts on the Irish cattle industry. Between 2016 and 2024, its burden increased in Irish cattle. As an initial step towards understanding drivers of this increase, we explore long‐term trends in measures of bTB burden and cattle demographics in Ireland. Methods Using data from 2008 to 2024,
Jamie M. Madden, Eamonn Gormley, Philip Breslin, Damien Barrett, Jonas Brock, Jamie A. Tratalos, John Griffin, Mike Horan, Miriam Casey‐Bryars   +8 more
wiley   +1 more source

Prevalence of Intramammary Infections in Beef Heifers at Parturition

, 1998
The prevalence of intramammary infections (IMI) in dairy heifers at parturition has been determined at several sites both within the USA and worldwide. To our knowledge, a study regarding the prevalence of IMI in beef heifers at parturition has not been ...
Bailey, T., Roberson, J. R.
core   +1 more source

Fertility and parturition parameters in beef type heifers

Tropical Animal Health and Production
Abstract This study compared fertility and parturition parameters in Limousin (L) and Charolais (C) heifers to identify the breed most suitable for beef production. A total of 234 L and 76 C Hungarian-origin heifers, aged 9–11 months, were managed under standardized housing and feeding conditions at Dogan Farm.
Ayşe Uysal, Vefa Tohumcu, Soner Uysal, Ali Sarı, Oğuz Zenginoglu, Mehmet Cengiz, Armağan Hayırlı   +6 more
openaire   +4 more sources