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Veterinary Sciences
Special Issues
Advances in Reproduction and Fertility in Dairy Cows
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Advances in Reproduction and Fertility in Dairy Cows

A special issue of Veterinary Sciences (ISSN 2306-7381). This special issue belongs to the section "Veterinary Reproduction and Obstetrics".

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 8390

Special Issue Editors

Prof. Dr. Luis Ángel Quíntela

E-Mail Website
Guest Editor
Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain
Interests: Dairy cattle; ultrasonography; bovine diseases; animal welfare.
Special Issues, Collections and Topics in MDPI journals
Dr. Uxía Yáñez Ramil

E-Mail Website
Guest Editor
Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain
Interests: ultrasound; dairy cattle; reproductive efficiency; precision livestock farming

Special Issue Information

Dear Colleagues,

Reproductive efficiency is one of the fundamental pillars of successful farm profitability. In the context of dairy farming, achieving and maintaining high reproductive efficiency are paramount for several reasons, including the appropriate supply of replacement heifers, maximizing the number of lactating cows in the herd, and its genetic improvement. Consequently, advances in this field are imperative to address the evolving challenges faced by the dairy industry. Therefore, the purpose of this Special Issue is to gather the latest progress regarding reproductive biotechnology, genetics, and management practices to enhance reproductive efficiency in dairy farms.

The scope includes reviews and original research papers involving the above-mentioned aspects and any other current topics related to the improvement of reproductive efficiency in dairy herds.

Prof. Dr. Luis Ángel Quíntela
Dr. Uxía Yáñez Ramil
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Veterinary Sciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • reproductive efficiency
  • fertility
  • dairy cattle
  • evolution

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Published Papers (2 papers)

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Research

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13 pages, 1104 KiB  
Article
Evaluation of Anogenital Distance and Anti-Müllerian Hormone Plasmatic Concentration as Potential Phenotypes to Predict Reproductive Performance in Holstein Heifers
by Lucía Vidal, Jacobo Álvarez, Uxía Yáñez, Juan Caínzos, Rodrigo Muíño, Juan J. Becerra, Ana I. Peña, Luis A. Quintela and Pedro G. Herradón
Vet. Sci. 2024, 11(10), 495; https://doi.org/10.3390/vetsci11100495 - 12 Oct 2024
Cited by 1 | Viewed by 2155
Abstract
Anogenital distance (AGD) is a marker of the degree of prenatal exposure to androgens in multiple species, and it has been suggested that there is an inverse association between AGD and fertility. Therefore, the aim of this study was to determine the usefulness [...] Read more.
Anogenital distance (AGD) is a marker of the degree of prenatal exposure to androgens in multiple species, and it has been suggested that there is an inverse association between AGD and fertility. Therefore, the aim of this study was to determine the usefulness of AGD and anti-Müllerian hormone (AMH) concentrations, an indirect marker of the follicular population, as predictors of future reproductive potential in Holstein cattle. The AGD was measured in 566 females from 9 dairy farms in Galicia (Spain). A group of 172 females underwent a second measurement 9 months after. Additionally, data on the age at first insemination (1stAI age), number of AI (AI-PREG), age at first pregnancy (1stPREG age), age at first calving (1stCAL age), and calving–pregnancy (CAL-PREG) and calving–calving (CAL-CAL) intervals were collected. Blood samples were collected from 80 heifers to determine AMH concentrations. Our results showed that AGD varied minimally with age, and that cows with short AGD had earlier 1stAI age, 1stPREG age, and 1stCAL age (p < 0.05) than cows with long AGD. No significant differences were observed for the CAL-PREG and CAL-CAL intervals. Additionally, no significant association was found between AMH concentration and AGD or reproductive parameters. Consequently, the results suggest the possibility of using AGD as a marker of future reproductive performance in Holstein heifers. However, there was insufficient evidence to associate AMH concentrations and reproductive performance, underlining the need for further studies with larger sample sizes. Full article
(This article belongs to the Special Issue Advances in Reproduction and Fertility in Dairy Cows)
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Review

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14 pages, 346 KiB  
Review
Interval from Oestrus to Ovulation in Dairy Cows—A Key Factor for Insemination Time: A Review
by Fabio De Rensis, Eleonora Dall’Olio, Giovanni Maria Gnemmi, Padet Tummaruk, Melania Andrani and Roberta Saleri
Vet. Sci. 2024, 11(4), 152; https://doi.org/10.3390/vetsci11040152 - 29 Mar 2024
Cited by 4 | Viewed by 4989
Abstract
This review describes the oestrus-to-ovulation interval, the possibility of predicting the time of ovulation, and the optimum time for insemination relative to oestrus in dairy cows. The duration of oestrus in dairy cows is approximately 8–20 h, with differences possibly related to the [...] Read more.
This review describes the oestrus-to-ovulation interval, the possibility of predicting the time of ovulation, and the optimum time for insemination relative to oestrus in dairy cows. The duration of oestrus in dairy cows is approximately 8–20 h, with differences possibly related to the methods of oestrus detection and the frequency of observations. Most cows ovulate approximately 24–33 h after the onset of oestrus and 15–22 h after the end of oestrus. The interval from the preovulatory luteinising hormone (LH) surge to ovulation is approximately 4–30 h. Ovulation occurs when follicle diameter averages 18–20 mm. When it is possible to correctly determine the beginning of oestrus, artificial insemination can be performed utilizing the “a.m.–p.m. rule”, and only one insemination may be applied. In cows with too long or too short oestrus-to-ovulation intervals, fertility can be compromised. One important factor that can alter the oestrus-to-ovulation interval is acute or chronic heat stress during the warm season. When there is a risk that insemination may occur too early or too late with respect to the time of ovulation, GnRH administration can be considered. Full article
(This article belongs to the Special Issue Advances in Reproduction and Fertility in Dairy Cows)
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