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Animals
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New Insights into the Theriogenology of Domestic and Wild Carnivores
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New Insights into the Theriogenology of Domestic and Wild Carnivores

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Animal Reproduction".

Deadline for manuscript submissions: closed (24 August 2024) | Viewed by 5674

Special Issue Editor

Prof. Dr. Cristina Gobello

E-Mail Website
Guest Editor
Faculty of Veterinary Sciences, National University of La Plata and National Research Council, Buenos Aires, Argentina
Interests: canine; feline; carnivore; reproduction; theriogenology; dog; cat
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The study of carnivore reproduction has lagged behind that of larger domestic species. Only after the 1980s did domestic dog and cat theriogenology achieve relevance. Although there have been an increasing number of studies since then, many reproductive aspects of these species remain to be unveiled. Thus, the aim of this Special Issue is to publish high-quality peer-reviewed articles providing an updated overview of the current state of basic and applied knowledge on domestic and wild carnivore theriogenology.

I am pleased to invite you to submit your articles to this Special Issue, “New Insights into the Theriogenology of Domestic and Wild Carnivores”, which will consider research areas (among other relevant topics) such as physiology, pathology, diagnosis methods, therapeutics, infertility, biotechnology and contraception.

Basic or applied original research, clinical trials, case series and reviews (of all types) are welcome.

I look forward to receiving your contributions.

Prof. Dr. Cristina Gobello
Guest Editor

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. Animals is an international peer-reviewed open access semimonthly 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 2400 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

  • canine
  • feline
  • reproduction
  • physiology
  • endocrinology
  • andrology
  • therapeutics
  • contraception
  • biotechnology
  • genetics

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Published Papers (3 papers)

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Research

13 pages, 2075 KiB  
Article
Semen Collection and Evaluation in Two Tigers (Panthera tigris) and Two Leopards (Panthera pardus)
by Marco Cunto, Giulia Ballotta and Daniele Zambelli
Animals 2024, 14(16), 2381; https://doi.org/10.3390/ani14162381 - 16 Aug 2024
Cited by 2 | Viewed by 1485
Abstract
Assisted reproduction techniques play a significant role in veterinary medicine, and although they are widely used in domestic animals, they are also becoming increasingly relevant in clinical practice for wild felids, especially in the conservation efforts for endangered species. In this study, the [...] Read more.
Assisted reproduction techniques play a significant role in veterinary medicine, and although they are widely used in domestic animals, they are also becoming increasingly relevant in clinical practice for wild felids, especially in the conservation efforts for endangered species. In this study, the result of two semen collection techniques, urethral catheterization after pharmacological induction (Ur.Ca.P.I.) and electroejaculation, are described, aiming to provide new practical information about sperm collection using the Ur.Ca.P.I. technique and electroejaculation in tigers and leopards, describing the authors’ experience and presenting new data and observations. The following descriptive study included two subjects of Panthera tigris species and two of Panthera pardus. These subjects, after general anesthesia, underwent sperm collection initially with Ur.Ca.P.I. and, subsequently, with electroejaculation. Sampling was made possible in both species thanks to the use of electroejaculation. Sperm volumes in leopards ranged from 0.3 to 0.5 mL and in tigers from 0.5 to 2.177 mL. Sperm concentration in leopards ranged from 136 × 106 to 280 × 106 sperm/mL, and in tigers, from 21.5 × 106 to 354 × 106 sperm/mL. Urethral catheterization gave positive results in leopards, with sperm volumes ranging from 25 up to 150 µL and a concentration ranging from 110 × 106 up to 1082 × 106 sperm/mL. In tigers, unlike in leopards, the use of the Ur.Ca.P.I. technique encountered difficulties that did not allow satisfactory results to be obtained. Therefore, it would be useful to test the feasibility of urethral catheterization on a larger group of individuals in order to have more meaningful feedback. Finally, because electroejaculation always allowed semen collection in tigers, with a higher sperm quality than samples collected by Ur.Ca.P.I., we currently consider it the technique of choice for the collection of semen material in this species. Full article
(This article belongs to the Special Issue New Insights into the Theriogenology of Domestic and Wild Carnivores)
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9 pages, 1818 KiB  
Article
Clinical, Ovulatory and Histological Effect of a Postnatal Testosterone Treatment in Female Dogs
by Cynthia Marchetti, Mariela Grisolia-Romero, Marcelo Priotto, Marcela Faya and Cristina Gobello
Animals 2024, 14(7), 1049; https://doi.org/10.3390/ani14071049 - 29 Mar 2024
Viewed by 1509
Abstract
It has been described in some female mammalian species that postnatal androgenization causes reproductive structural and functional abnormalities. The objective of this study was to describe the clinical, ovulatory and genital effects of postnatal androgens in female dogs. Ten newborn female crossbred puppies [...] Read more.
It has been described in some female mammalian species that postnatal androgenization causes reproductive structural and functional abnormalities. The objective of this study was to describe the clinical, ovulatory and genital effects of postnatal androgens in female dogs. Ten newborn female crossbred puppies were randomly assigned to: testosterone enanthate 18 mg/100 g sc (TE; n = 5) or placebo sc (PL; n = 5). The puppies were physically followed up until puberty when ovulation was tested by serum progesterone. Then, ovariohysterectomies were performed, and genital tracts were grossly and histomorphometrically examined. At puberty, all the females had normal estrous behavior and ovulated without age and body weight differences. All TE puppies presented mild clitoris enlargement. Gross and microscopical ovarian examination did not reveal differences. Conversely, the endometrial area occupied by uterine glands as well as the height of the glandular and luminal epithelium were higher in the TE than in the PL group (<0.01). The height of the endometrium and myometrial thickness did not differ between groups. It was concluded that a supraphysiological postnatal dose of testosterone did not affect ovulatory capacity, nor did it provoke gonadal histological alterations, although it caused an increased area of endometrial glands and a higher uterine epithelium. Full article
(This article belongs to the Special Issue New Insights into the Theriogenology of Domestic and Wild Carnivores)
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11 pages, 1664 KiB  
Article
INSL3 Variation in Dogs Following Suppression and Recovery of the HPG Axis
by Ravinder Anand-Ivell, Acacia Rebello Coutinho, Yanzhenzi Dai, Gary England, Sandra Goericke-Pesch and Richard Ivell
Animals 2024, 14(5), 675; https://doi.org/10.3390/ani14050675 - 21 Feb 2024
Viewed by 1407
Abstract
Insulin-like peptide 3 (INSL3) is a constitutive product of mature, adult-type Leydig cells of the testes and consequently in most mammals is an ideal biomarker with which to monitor pubertal development. A new heterologous time-resolved fluorescence immunoassay was developed and validated to measure [...] Read more.
Insulin-like peptide 3 (INSL3) is a constitutive product of mature, adult-type Leydig cells of the testes and consequently in most mammals is an ideal biomarker with which to monitor pubertal development. A new heterologous time-resolved fluorescence immunoassay was developed and validated to measure circulating INSL3 in the blood of adult male dogs. Compared to other species, INSL3 concentration is low with marked variation between individuals, which appears to be independent of breed, age, or weight. A model system was then used in which a cohort of beagle dogs was subject to a GnRH-agonist implant to suppress the HPG axis and spermatogenesis, followed by implant removal and recovery. Unlike testosterone, INSL3 levels were not fully suppressed in all animals by the GnRH agonist, nor was the recovery of Leydig cell function following implant removal uniform or complete, even after several weeks. In dogs, and dissimilar from other species (including humans), Leydig-cell INSL3 appears to be quite variable between individual dogs and only weakly connected to the physiology of the HPG axis after its suppression by a GnRH-agonist implant and recovery. Consequently, INSL3 may be less useful in this species for the assessment of testis function. Full article
(This article belongs to the Special Issue New Insights into the Theriogenology of Domestic and Wild Carnivores)
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