Results 181 to 190 of about 3,840 (211)
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Follicular wave dynamics and Growth factors gene expression in Braford heifers
Anatomia, Histologia, Embryologia, 2020AbstractThe objectives of the present study were (experiment 1) to characterized development and dynamics of the dominant follicles (DF) and the corpus luteum (CL) to determine patterns of two (W2) and three (W3) follicular waves in beef heifers, and (experiment 2) to determine gene expression of growth factors gene expression in follicular cells of W2
Pablo Sebastián Reineri +3 more
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Economic selection indexes for Hereford and Braford cattle raised in southern Brazil
Journal of Animal Science, 2017Economic selection indexes (EI) are considered the best way to select the most profitable animals for specific production systems. Nevertheless, in Brazil, few genetic evaluation programs deliver such indexes to their breeders. The aims of this study were to determine the breeding goals (BG) and economic values (EV, in US$) for typical beef cattle ...
R F, Costa +3 more
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Meat Science, 2014 Chemical and mineral composition and the intramuscular fatty acid (IMF) profile of the Longissimus dorsi muscle (LM) of 60 purebred Hereford, 1/4 Braford and 3/8 Braford steers finished either in a feedlot or on improved pastures of the Pampa biome were evaluated. Pastures were improved with the introduction of Lolium multiflorum, Trifolium repens, and
Leandro Lunardini Cardoso, J U Tarouco
exaly +3 more sources
Naturally monozygotic quadruplets in a Braford cow confirmed by DNA analysis: A case report
Reproduction in Domestic Animals, 2020AbstractCattle are a monotocous species, despite naturally conceived multiple births are sometimes observed. Although the number of twins has consistently increased, triplet and quadruplet pregnancies represent 0.015% and 0.004% of the total births, respectively.
Andrés Rogberg‐Muñoz +7 more
openaire +3 more sources
Journal of Animal Science, 2017
Ticks are one of the main causes of losses in cattle, causing economic impact by reducing productivity and fertility and by transmission of diseases. The objective of this study was to analyze the genetic gains obtained through different strategies to include traditional (EBV) or genomic EBV (GEBV) for tick count (TC) in selection indexes for Hereford ...
 P, Reis +3 more
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Ticks are one of the main causes of losses in cattle, causing economic impact by reducing productivity and fertility and by transmission of diseases. The objective of this study was to analyze the genetic gains obtained through different strategies to include traditional (EBV) or genomic EBV (GEBV) for tick count (TC) in selection indexes for Hereford ...
 P, Reis +3 more
openaire +2 more sources
International Journal of Biometeorology, 2014
The aim of this study was to assess the seasonal effects of the environment on semen quality in bulls, using infrared thermography. Sperm motility (M), mass motion (MM), and vigor (VIG) were evaluated in sperm samples from 17 Bradford bulls aged approximately 24 months at the beginning of the study.
Silvio Renato Oliveira, Menegassi +8 more
openaire +2 more sources
The aim of this study was to assess the seasonal effects of the environment on semen quality in bulls, using infrared thermography. Sperm motility (M), mass motion (MM), and vigor (VIG) were evaluated in sperm samples from 17 Bradford bulls aged approximately 24 months at the beginning of the study.
Silvio Renato Oliveira, Menegassi +8 more
openaire +2 more sources
Genomic prediction for tick resistance in Braford and Hereford cattle.
Journal of animal science, 2016One of the main animal health problems in tropical and subtropical cattle production is the bovine tick, which causes decreased performance, hide devaluation, increased production costs with acaricide treatments, and transmission of infectious diseases.
F F, Cardoso +9 more
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Threshold and linear models for genetic evaluation of visual scores in Hereford and Braford cattle
Animal Production Science, 2018Data from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association ...
G. S. Campos +8 more
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Tropical Animal Health and Production, 2017
The objective of this study was to compare the presence of ovarian activity and pregnancy rates to temperature variation at the vulvar skin measured by infrared thermography (IRT). In addition, we also aimed to evaluate the IRT as a non-invasive method to evaluate animal breeding from fixed timed artificial insemination (FTAI).
Vinicius Luiz, Radigonda +6 more
openaire +2 more sources
The objective of this study was to compare the presence of ovarian activity and pregnancy rates to temperature variation at the vulvar skin measured by infrared thermography (IRT). In addition, we also aimed to evaluate the IRT as a non-invasive method to evaluate animal breeding from fixed timed artificial insemination (FTAI).
Vinicius Luiz, Radigonda +6 more
openaire +2 more sources