Results 121 to 130 of about 40,862 (248)

Variation in the load of the horn fly, Haematobia irritans , in cattle herds is determined by the presence or absence of individual heifers

, 2004
The distribution of horn flies, Haematobia irritans (L.) (Diptera: Muscidae), in herds of Danish Holstein-Friesian cattle was investigated in two studies conducted during two field seasons.
Thomas, G., Pickett, J. A., Thomas, G-, Woodcock, C. M., G. Thomas, C. M. Woodcock, K.‐M. V. Jensen, Jespersen, J. B., J. A. Pickett, Jensen, K-M. V., Birkett, M. A., L. J. Wadhams, M. A. Birkett, Jensen, K.-M. V., J. B. Jespersen, Wadhams, L. J.   +15 more
core   +1 more source

Assessing the Environmental, Economic and Social Impacts of a Greenhouse Gas Emission Tax in Swiss Agriculture

Journal of Agricultural Economics, Volume 77, Issue 3, Page 1144-1165, September 2026.
ABSTRACT Agriculture accounts for about one fifth of global greenhouse gas (GHG) emissions, making mitigation a key policy priority. Although policymakers are increasingly considering market‐based approaches such as taxes, their broader impacts remain insufficiently assessed.
Marta Tarruella‐Cayuela, Nadja El Benni, Eva Winter, Robert Huber, Robert Finger, Gabriele Mack   +5 more
wiley   +1 more source

STEER AND HEIFER PRICE DIFFERENCES IN THE LIVE CATTLE AND CARCASS MARKETS [PDF]

A dynamic model is used to estimate quarterly price differences between steers and heifers in the feeder, slaughter, and carcass markets. For cattle within the same weight and grade range, their price differences are hypothesized to be influenced by ...
Marsh, John M., Schultz, Robert W.
core  

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle

Journal of Animal Breeding and Genetics, Volume 143, Issue 5, Page 658-666, September 2026.
ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro, Gabriel Gubiani, Letícia Pereira, Amanda Santos Gubiani, Angélica Simone Cravo Pereira, Roberto Sainz, Cláudio Ulhôa Magnabosco, Fernando Baldi   +7 more
wiley   +1 more source

Pre-breeding examination in heifers

, 2018
As novilhas de substituição são um investimento a longo prazo tanto nos sistemas de produção de carne como de leite, e as suas características refletem-se no desempenho da exploração e na sua viabilidade económica, merecendo por isso toda a atenção do ...
Payan-Carreira, Rita, Camiña García, Mercedes, Quaresma, Miguel, Paixão, Gustavo   +3 more
core   +1 more source

Better Multi‐Breed Genomic Predictions for Tropical Bull Fertility Using a Breed‐Adjusted Genomic Relationship Matrix

Journal of Animal Breeding and Genetics, Volume 143, Issue 5, Page 679-690, September 2026.
ABSTRACT The pressing requirement for agricultural systems to adopt climate change adaptation strategies specifically designed for tropical environments underscores the significance of implementing sustainable bull breeding practices in beef cattle operations.
Antonio Reverter, Pâmela A. Alexandre, Marina R. S. Fortes, Laercio R. Porto‐Neto   +3 more
wiley   +1 more source

Social rank affects the endocrine response to frequent regroupings in grazing dairy heifers

JDS Communications
The objectives of this study were to determine the social behavior response to repeated social regrouping (SR), and if social rank and the changes of social rank affect the growth rate and some metabolites and hormones linked to energy status, in ...
C. Fiol, M. Moratorio, M. Carriquiry, R. Ungerfeld   +3 more
doaj   +1 more source

Pregnancy Outcomes Following Artificial Insemination and Embryo Transfer in Dairy Cows—Expectations vs. Reality

Reproduction in Domestic Animals, Volume 61, Issue S2, September 2026.
ABSTRACT Bovine embryo transfer (ET) has been a consistently growing market worldwide with in vitro produced (IVP) embryos now far outnumbering those produced by traditional superovulation. Because transfer of a viable blastocyst‐stage embryo to the uterus bypasses many of the potential biological causes of early pregnancy failure associated with ...
Ana Clara Canto Souza, Pat Lonergan
wiley   +1 more source

Divergent Perceptions of Dairy Farmers on the Role of Grazing in Animal Welfare and Production

Rural Sociology, Volume 91, Issue 3, September 2026.
ABSTRACT The modernization of dairy production, characterized by a transition to freestall barns with automatic milking systems and increasing herd sizes, has resulted in a decline in cattle grazing. The once‐traditional practice of summer grazing in Northern Europe has become a contentious topic, with the industry and public holding divergent views ...
I. Herzon, N. Berglund, A. Sjöholm, F. Keränen, T. Kokkonen, A. Vanhatalo, A. Halmemies‐Beauchet‐Filleau, A. Lonkila, P. Krawczel   +8 more
wiley   +1 more source

Residual feed intake adjusted for backfat thickness and feeding frequency is independent of fertility in beef heifers

, 2011
This study examined the effects of residual feed intake (RFI), RFI adjusted for off-test backfat thickness (RFIfat) and RFI adjusted for off-test backfat thickness and feeding event frequency (RFIfat & activity) on heifer fertility and productivity ...
Ambrose, D. J., Colazo, M. G., Novak, S., Baron, V. S., McCartney, D., Basarab, J. A.   +5 more
core   +1 more source