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Sire contribution to pregnancy loss and pregnancy-associated glycoprotein production in nelore cows
(2018-02-01)
Pregnancy loss is a major contributing factor to reproductive inefficiency in both the beef and dairy industries. Sires can have a significant influence on the amount of pregnancy loss; however, this relationship is still ...
Probability of pregnancy to artificial insemination either after detected oestrus or at a fixed time in dairy cows: Influence of intrinsic and extrinsic factors in a large-scale, on-farm study
(2021-05-01)
The first aim of this study was to determine the influence of the procedures [hormonal treatments for fixed time artificial insemination (FTAI) versus insemination at spontaneous oestrus (SEAI)] on several sequential ...
Sire field fertility does not correlate with sire conception rate (SCR) score
(Oxford Univ Press Inc, 2021-11-01)
Assessment of field fertility and several in vitro sperm characteristics following the use of different Angus sires in a timed-AI program with suckled Nelore cows
(Elsevier B.V., 2012-06-01)
In order to provide information that may help researchers to understand the main cause(s) of differences in bull fertility frequently observed in field trials, this study aimed to investigate conception rates as well as ...
Assessment of field fertility and several in vitro sperm characteristics following the use of different Angus sires in a timed-AI program with suckled Nelore cows
(Elsevier B.V., 2012-06-01)
In order to provide information that may help researchers to understand the main cause(s) of differences in bull fertility frequently observed in field trials, this study aimed to investigate conception rates as well as ...
Effect of sperm dose on pregnancy per timed AI in Brazilian beef cattle.
(Amer Soc Animal Science, 2017-08-01)
Use of computer-assisted sperm analyses (CASA) and flow cytometry to explain Angus bull field fertility differences
(Oxford Univ Press Inc, 2018-12-01)
Predicting male fertility in dairy cattle using markers with large effect and functional annotation data
(BMC, 2019-04)
Background: Fertility is among the most important economic traits in dairy cattle. Genomic prediction for cow fertility has received much attention in the last decade, while bull fertility has been largely overlooked. The ...
Assessment of field fertility and several in vitro sperm characteristics following the use of different Angus sires in a timed-AI program with suckled Nelore cows
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
In order to provide information that may help researchers to understand the main cause(s) of differences in bull fertility frequently observed in field trials, this study aimed to investigate conception rates as well as ...
Genotype x environment interaction for age at first calving in Brazilian and Colombian Holsteins
(2004-08-01)
The objective was to determine whether there is a genotype x environment interaction for age at first calving (AFC) in Holstein cattle in Brazil and Colombia. Data included 51,239 and 25,569 first-lactation records from ...