Evaluation of Breeding Soundness

Hopper, Richard M.; King, E. H.

doi:10.1002/9781118833971.ch8

Cited by 2 publications

(1 citation statement)

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“…The motility of the semen samples obtained from these bulls was evaluated and this activity is assumed to be the first actual practice of fertility evaluation in the US (Hopper, 2014). The early standards for evaluation of bull fertility were set by a society known as "Rocky Mountain Society for the Study of Breeding Soundness," and this organization is currently known as "Society for Theriogenology" (SFT) (Hopper and King, 2014).…”

Section: Introductionmentioning

confidence: 99%

Identification of biomarkers for bull fertility using functional genomics

et al. 2022

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Prediction of bull fertility is critical for the sustainability of both dairy and beef cattle production. Even though bulls produce ample amounts of sperm with normal parameters, some bulls may still suffer from subpar fertility. This causes major economic losses in the cattle industry because using artificial insemination, semen from one single bull can be used to inseminate hundreds of thousands of cows. Although there are several traditional methods to estimate bull fertility, such methods are not sufficient to explain and accurately predict the subfertility of individual bulls. Since fertility is a complex trait influenced by a number of factors including genetics, epigenetics, and environment, there is an urgent need for a comprehensive methodological approach to clarify uncertainty in male subfertility. The present review focuses on molecular and functional signatures of bull sperm associated with fertility. Potential roles of functional genomics (proteome, small noncoding RNAs, lipidome, metabolome) on determining male fertility and its potential as a fertility biomarker are discussed. This review provides a better understanding of the molecular signatures of viable and fertile sperm cells and their potential to be used as fertility biomarkers. This information will help uncover the underlying reasons for idiopathic subfertility.

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Section: Introductionmentioning

confidence: 99%

Identification of biomarkers for bull fertility using functional genomics

et al. 2022

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The effect of a single dose of selenium with vitamin E on oxidative stress and fertilization indicators of ram sperm over the course of spermatogenesis

et al. 2023

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The aim of the experiment was to determine the effect of a single subcutaneous administration of selenium (Se) + vitamin E on the ejaculate volume, sperm count and viability, level of apoptosis and oxidative stress (OS) and Se concentration in ejaculates and blood of rams with respect to the time course of the spermatogenic cycle. The experimental group (EG; n = 6) was treated with a single injection of Selevit at a dose of 5 ml per animal (11 mg of sodium selenite and 125 mg of vitamin E/per animal). The control group (CG; n = 4) was treated in the same way, only with saline. Samples of blood and ejaculates were collected from each ram prior to application of Se and on the 1st, 14th, 26th, 38th, 50th and 62nd day after injection. Results showed that the Se concentration in the blood of EG was significantly higher only 24 h after application. Selenium concentration in the ejaculates of the EG was higher during the whole duration of the experiment (62 days), but significantly so only until day 14. The level of OS was significantly reduced on day 1, 14, and 62 after application of Selevit. There were no significant differences in the other analysed indicators. The results showed that one subcutaneous injection of Selevit had a positive effect on Se concentration and OS level in ejaculates, but was not sufficient to improve other monitored sperm quality indicators.

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Evaluation of Breeding Soundness

Cited by 2 publications

References 30 publications

Identification of biomarkers for bull fertility using functional genomics

Identification of biomarkers for bull fertility using functional genomics

The effect of a single dose of selenium with vitamin E on oxidative stress and fertilization indicators of ram sperm over the course of spermatogenesis

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