Results 61 to 70 of about 40,862 (248)

Population Differentiation and Polygenic Selection in the Finnish Ayrshire Cows Selected on Genomic Information

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT The Finnish Ayrshire cattle belong to the Nordic Red breeds. The basis of selection in Nordic Red breeds shifted from traditional pedigree‐based breeding values to genomic breeding values between 2011 and 2014. Joint genetic evaluation and admixture among the Nordic Red breeds have led to the formation of a composite Nordic Red population ...
Katri Sarviaho, Minna Koivula, Terhi Iso‐Touru, Pekka Uimari, Katja Hänninen   +4 more
wiley   +1 more source

Transmission of border disease virus from a persistently infected calf to seronegative heifers in early pregnancy [PDF]

, 2015
BACKGROUND: This study describes the transmission of border disease virus (BDV) from a persistently infected calf to seronegative heifers in early pregnancy, resulting in persistently infected fetuses. On day 50 of pregnancy (= day 0 of the infection
Hässig, Michael, Fredi Janett, Braun, Ueli, Janett, Fredi, Hilbe, Monika, Frei, Sandra, Zanoni, Reto Giacomo, Reto Zanoni, Monika Hilbe, Ueli Braun, Schweizer, Matthias, Matthias Schweizer, Sandra Frei, Michael Hässig   +13 more
core   +2 more sources

Alternativas en el manejo de la mastitis en novillas

Revista Mvz Cordoba, 2009
La mastitis en novillas es un problema que ha alcanzado importantes dimensiones a medida que las explotaciones lecheras se han especializado. Las hembras bovinas son susceptibles a infecciones intramamarias (IIM) desde el momento en que la glándula ...
Genaro A. Contreras
doaj   +1 more source

Influence of bull biostimulation on age at puberty and reproductive performance of Sahiwal heifers

Indian Journal of Animal Sciences, 2020
Present study was undertaken to compare the effect of biostimulation by exposing the heifers to fenceline bull contact and fenceline + direct contact on age at puberty and reproductive performance of Sahiwal heifers.
SANJAY CHOUDHARY, M L KAMBOJ, NITIN RAHEJA, NISHANT KUMAR, MAYAMITTA SAINI, S S LATHWAL   +5 more
doaj   +1 more source

Genetic Associations of Functional Longevity With Sexual Precocity and Growth Traits in Nellore Beef Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Functional longevity (FL) is a complex trait that integrates many attributes directly contributing to the successful retention and productivity of a cow within the herd. Consequently, improving FL in beef cattle increases herd profitability. This study aimed to estimate the genetic associations between two alternative FL definitions and traits
Dalila Ribeiro dos Santos, Gabriele de Souza Silva Fernandes, Arione Augusti Boligon, Mário Luiz Santana, Gilberto Romeiro de Oliveira Menezes, Denise Rocha Ayres, Annaiza Braga Bignardi, Rodrigo Junqueira Pereira   +7 more
wiley   +1 more source

Glycogen metabolites and meat quality in feed-restricted re-fed beef heifers

, 1996
Twenty-four Hereford crossbred heifers weighing 222 kg (22 kg SD) and aged 226 d (13 d SD) on day 0 were used to investigate the effects of feed restriction (period 1) followed by realimentation (period 2) on hepatic and longissimus muscle glycogen ...
Price, M. A., Aalhus, J. L., Yambayamba, E. S. K., Jones, S. D. M.   +3 more
core   +1 more source

Estimation of Genetic Parameters and Genetic Trends for Growth and Reproductive Traits in Mashona Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Mashona cattle are an indigenous Sanga cattle breed from Zimbabwe, used for beef production and known for their mothering ability and adaptation to harsh tropical environments. Growth and reproductive traits are key determinants of efficiency in beef production.
Maxman Gomo, Luiz F. Brito, Artur O. Rocha, Carina Visser   +3 more
wiley   +1 more source

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

Ultrasound data are used to sort heifers for immediate sale or for development as replacement stock. While ultrasound improves predictions about conception, the value of ultrasound the data is relatively small.
Vann, Rhonda C., Willard, Scott T., Anderson, John D., Dos Santos, Alecsandro   +3 more
core   +2 more sources

Genetic and Phenotypic Correlations Among Growth, Disease Occurrence, and Reproductive Performance From Calf to Heifer in Girolando Dairy Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT The Girolando breed, a cross between Holstein (Bos taurus) and Gir (Bos indicus), is the primary choice for dairy production in Brazilian tropical regions, as it combines high productive potential with adaptation to the tropical environment.
Laura B. da C. Pereira, Viviane A. Ligori, Hinayah R. de Oliveira, Eula R. Carrara, Carolina A. de S. D. Muniz, Edson L. de A. Ribeiro, Lenira E. F. Zadra   +6 more
wiley   +1 more source

Evaluation of age, weaning weight, body condition score, and reproductive tract score in pre-selected beef heifers relative to reproductive potential

Journal of Animal Science and Biotechnology, 2019
Background Artificial insemination is a preferred breeding method for beef heifers as it advances the genetic background, produces a predictive and profitable calving season, and extends the heifer’s reproductive life span.
Sarah E. Dickinson, Michelle F. Elmore, Lisa Kriese-Anderson, Joshua B. Elmore, Bailey N. Walker, Paul W. Dyce, Soren P. Rodning, Fernando H. Biase   +7 more
doaj   +1 more source