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Romagnoli S, Krekeler N, de Cramer K, Kutzler M, McCarthy R, Schaefer-Somi S. WSAVA guidelines for the control of reproduction in dogs and cats. J Small Anim Pract 2024. [PMID: 38804079 DOI: 10.1111/jsap.13724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/19/2024] [Accepted: 02/07/2024] [Indexed: 05/29/2024]
Affiliation(s)
- S Romagnoli
- Department of Animal Medicine, Production and Health, Viale dell'Università 16, University of Padova, Legnaro, 35020, Italy
| | - N Krekeler
- Department of Biomedical Sciences, Melbourne Veterinary School, Faculty of Science, Melbourne, VIC, Australia
| | - K de Cramer
- Department of Production Animals, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - M Kutzler
- Dept of Animal and Rangeland Sciences, Oregon State University, 112 Withycombe Hall, Corvallis, OR, 97331, USA
| | - R McCarthy
- Department of Veterinary Clinical Sciences, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA, 01536, United States
| | - S Schaefer-Somi
- Center for Reproduction, Vetmeduni Vienna, Veterinärplatz 1, Vienna, 1210, Austria
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2
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Luño V, Martínez F, Muñoz A, Gil L. Effect of season on the dynamics of cat sperm DNA fragmentation. BMC Vet Res 2023; 19:113. [PMID: 37553700 PMCID: PMC10410876 DOI: 10.1186/s12917-023-03682-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 08/01/2023] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND Feline species undergo reproductive seasonality; thus, sperm characteristics, such as DNA integrity, can be affected by the photoperiod. This study was conducted to determine the effect of seasonal changes on sperm quality and on the dynamics of sperm DNA fragmentation. Epididymal spermatozoa were collected from 36 tomcats subjected to bilateral orchiectomy during breeding (BS) and non-breeding (NBS) seasons. Sperm samples were obtained by cutting the cauda epididymis and assessed for sperm motility, concentration, acrosome integrity, plasma membrane integrity and sperm morphology. Sperm DNA fragmentation was evaluated by the sperm chromatin dispersion test after 0, 6, and 24 h of incubation at 37 °C. RESULTS The total sperm motility and plasma membrane integrity values were greater during the BS, while the percentages of abnormal sperm and head defects were lesser (p < 0.05). No significant differences in DNA fragmentation were found between seasons after sperm collection. DNA damage was greater after 24 h of incubation at 37 °C in both seasons, although the percentage of spermatozoa with fragmented DNA was significantly lesser in the BS than in the NBS at 24 h (p < 0.05). CONCLUSIONS The study suggests seasonal changes in some of the quality parameters of cat sperm. DNA fragmentation dynamics were affected by the time of incubation and reproductive season; therefore, this technique might be used as an additional tool to test the potential fertility of semen samples used in feline-assisted reproduction.
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Affiliation(s)
- Victoria Luño
- Departament of Animal Pathology, Universidad de Zaragoza, Zaragoza, 50013, Spain.
- Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain.
| | - Felisa Martínez
- Departament of Animal Pathology, Universidad de Zaragoza, Zaragoza, 50013, Spain
- Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Andrea Muñoz
- Departament of Animal Pathology, Universidad de Zaragoza, Zaragoza, 50013, Spain
- Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
| | - Lydia Gil
- Departament of Animal Pathology, Universidad de Zaragoza, Zaragoza, 50013, Spain
- Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain
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3
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Ng TT, Fascetti AJ, Larsen JA. Reproduction of Domestic Cats in Laboratories, Catteries, and Feral Colonies: A Review. Top Companion Anim Med 2023; 55:100780. [PMID: 37225041 DOI: 10.1016/j.tcam.2023.100780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 01/24/2023] [Accepted: 05/19/2023] [Indexed: 05/26/2023]
Abstract
Cat reproduction is important for research and commercial cat breeding operations, as well as the control of feral cat populations. This review describes studies examining reproductive performance in laboratory cats, privately-owned breeding cats, and feral cats, including sexual maturity, the estrous cycle (timing, behavior, and hormonal changes), seasonal effects, gestation length, parturition (litter size, litter weight, and parity effects), mortality, and stillbirth. Because the studies highlighted in this review vary in the location where they were conducted and the region's management practices, these factors should be considered depending on the goal of the reader when interpreting these data. Furthermore, standard practices were lacking in some earlier studies of cat reproduction, so they should be considered for historical context only and may not reflect the actual reproductive potential of cats as described in the new studies due to advancements in husbandry practices and nutrition. The objective of this manuscript is to review scientific studies examining reproductive performance in laboratory cats, privately-owned breeding cats, and feral cats. The data sources for this manuscript included original research publications and scientific reviews from the veterinary literature. All reviews or studies that augmented the knowledge of the reproduction of domestic cats in laboratories, catteries, and feral colonies were included. Most studies on laboratory cats have been conducted under the conditions of controlled light cycles, temperature, and diet. The environmental effects on reproductive behavior are subtler than those in feral cat studies, but the effects are still distinguishable. Cat breeding studies focus on genetic effects and rely heavily on surveys or questionnaires from cat breeders. However, the reliability of these data can be variable, in part because the methodology of record-keeping and other protocols are generally not reported. In addition, laboratory animal management standards, specific pathogen-free cat colonies, and nutritional requirements for cats were not fully established until the 1970s. Reproductive outcomes of earlier studies may not be a true representation of the modern cat due to more advanced, regulated husbandry practices, including improvements in nutrition, resulting in diets formulated to meet feline requirements for every life stage.
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Affiliation(s)
- Theros T Ng
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA, USA.
| | - Andrea J Fascetti
- Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Jennifer A Larsen
- Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA
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Colombo M, Morselli MG, Zahmel J, Luvoni GC. Ultra-Rapid Freezing Preserves Morphofunctional Integrity and Fertilizing Ability of Epididymal Cat Spermatozoa. Front Vet Sci 2022; 9:866953. [PMID: 35774984 PMCID: PMC9237782 DOI: 10.3389/fvets.2022.866953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/02/2022] [Indexed: 11/21/2022] Open
Abstract
Vitrification and ultra-rapid freezing, which are more commonly used for oocytes and embryos, have recently been applied to spermatozoa in an attempt to make semen cryopreservation in field conditions easier compared to conventional freezing. It is well-known that in case of unexpected death of rare and wild animals, preserving epididymal spermatozoa from isolated testicles represents a great chance of salvaging male germplasm for future use in assisted reproductive technologies. The aim of this study was to evaluate the morphofunctional integrity of cat epididymal spermatozoa ultra-rapid frozen in pellets or straws with two different extenders [E1 (Tris buffer with 20% egg yolk and 0.25 M sucrose) or E2 (Ham's F10 with 1% bovine serum albumin and 0.4 M sucrose)] and to test whether spermatozoa preserved by the best combination were able to fertilize oocytes and produce embryos in vitro by intracytoplasmic sperm injection (ICSI) of in vitro matured cat oocytes. The results showed that E1 and E2 in straw or pellet were comparable (at warming, about 30% normal morphology, 45% intact membranes, and 20% intact acrosomes), except for post-warming motility that was better maintained along time by E1 pellet (21.7 ± 7.4% at warming and 3.6 ± 2.9% after 6 h). Such spermatozoa could fertilize conspecific oocytes and support embryonic development (cleavage 35.5%) as well as frozen control spermatozoa (cleavage 54.29%, p = 0.22). In conclusion, cat epididymal spermatozoa better maintained their morphofunctional features after ultra-rapid freezing with E1 and could successfully produce embryos in vitro after ICSI. This underscores their usefulness as cryobanked material for fertility and biodiversity preservation purposes.
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Affiliation(s)
- Martina Colombo
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, Milan, Italy
- *Correspondence: Martina Colombo
| | - Maria Giorgia Morselli
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, Milan, Italy
| | - Jennifer Zahmel
- Department of Reproduction Biology, Leibniz-Institute for Zoo and Wildlife Research, Berlin, Germany
| | - Gaia Cecilia Luvoni
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, Milan, Italy
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Gobello C. Key aspects of domestic cat spermatogenesis. Reprod Domest Anim 2022; 57:459-464. [DOI: 10.1111/rda.14089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/25/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Cristina Gobello
- Center of Reproductive Physiology Faculty of Veterinary Sciences National University of La Plata & National Research Council Argentina
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6
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Expression of Apoptosis-Related Genes in Cat Testicular Tissue in Relation to Sperm Morphology and Seasonality-A Preliminary Study. Animals (Basel) 2021; 11:ani11020489. [PMID: 33673379 PMCID: PMC7918503 DOI: 10.3390/ani11020489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/20/2021] [Accepted: 02/04/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Programmed cell death (apoptosis) is a crucial process in spermatogenesis, responsible for the elimination of abnormal sperm cells and for the reduction of testicular volume outside the breeding season. Poor sperm morphology (teratozoospermia) and lower semen quality out of season are commonly observed in domestic cats, but the exact reasons and mechanisms are not known. The aim of this study was to use gene expression analysis to identify which apoptotic processes and pathways are expressed in the phenomenon of teratozoospermia and seasonality in the domestic cat. The results showed a higher expression of two antiapoptotic genes and one proapoptotic gene during the non-reproductive season, with no differences noted between normozoospermic and teratozoospermic cats. We hypothesize that during the non-breeding season there is a potential detrimental factor which activates a cascade of caspases, against which germ cells mount a defense by producing anti-apoptotic proteins. Further identification of this factor may help in the amelioration of semen quality of cats and improve feline breeding. Abstract Apoptosis is a crucial process in spermatogenesis, responsible for the elimination of abnormal sperm cells and testicular regression out of breeding season. The aim of this study was to assess if the expression of apoptosis-related genes in testicular tissue of domestic cats differed: (1) between normozoospermic and teratozoospermic donors, and (2) between reproductive and non-reproductive season. The expression of genes: BCL2L1, BCL2, BAX, BAD, FAS, FASLG, and caspases (CASP3, CASP8, CASP9, and CASP10) was analyzed by qRT-PCR in testicular tissue samples. During non-reproductive season significantly higher expression of two anti-apoptotic genes (BCL2L1 and BCL2) was observed. Additionally, there was a significant higher expression of CASP10 in teratozoospermic cats during non-reproductive than during reproductive season. No differences were noted between normozoospermic and teratozoospermic groups. Upregulation of some genes during the non-reproductive season indicates engagement of apoptotic mechanisms in the seasonal changes of semen quality in cats, however further studies on protein levels and analysis of changes on distinct testicular germinal layers are required. At the same time, teratozoospermia in the general population of cats seems to be not connected with dysregulation of apoptosis in the testes.
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Romagnoli S, Baldan A, Righetti C, Fontaine C, Scenna L, Badon T, Stelletta C, Milani C, Cecchetto M, Mollo A. Use of the gonadotropin-releasing hormone (GnRH) stimulation test to monitor gonadal function in intact adult male cats. Reprod Domest Anim 2016; 52:24-27. [PMID: 27862393 DOI: 10.1111/rda.12771] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 07/25/2016] [Indexed: 11/30/2022]
Abstract
The gonadotropin-releasing hormone (GnRH) stimulation test is a common procedure used to investigate normality of the pituitary-gonadal axis in mammals. There is very little information on the technique, its efficacy and side effects in small animals and in particular no information for male cats. In dogs, such test is performed by intravenous (IV) administration. With cats, the number of times the animal needs to be restrained for blood sampling should be the least possible. The purpose of this study was to assess efficacy and side effects of the GnRH stimulation test in tomcats comparing the IV with the intramuscular (IM) route of administration. A GnRH stimulation test was performed in eight adult tomcats through IM or IV administration of 50 μg gonadorelin. The response of the pituitary-gonadal axis was assessed by measuring serum testosterone on blood samples collected prior to and 1 hr following treatment. When considering each single group of cats, the post-stimulation serum testosterone values were significantly higher than the pre-treatment ones (p < .05). When comparing the two groups of cats, basal testosterone concentrations did not differ, and also post-GnRH testosterone concentrations did not differ. In conclusion, in the cats of our study, the GnRH stimulation test produced the same results following the IM or the IV route of administration. Therefore, in tomcats, the IM route can be considered as effective as the IV one and should be preferred when doing a GnRH test.
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Affiliation(s)
- S Romagnoli
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
| | - A Baldan
- Private Practitioner, Padova, Italy
| | | | - C Fontaine
- Companion Animal Medical Department - Virbac group, Carros, France
| | - L Scenna
- Private Practitioner, Trento, Italy
| | - T Badon
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
| | - C Stelletta
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
| | - C Milani
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
| | - M Cecchetto
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
| | - A Mollo
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy
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8
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Jennett AL, Jennett NM, Hopping J, Yates D. Evidence for seasonal reproduction in UK domestic cats. J Feline Med Surg 2016; 18:804-8. [PMID: 26293245 PMCID: PMC11112208 DOI: 10.1177/1098612x15595665] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The aims of this study were to analyse a large body of data obtained by the Royal Society for the Prevention of Cruelty to Animals (RSPCA) Greater Manchester Animal Hospital on the breeding pattern of owned domestic cats in the UK, and to provide clear statistical evidence of whether seasonal variation remains present in temperate climates. METHODS The total number of cats spayed and the number of cats found to be pregnant were recorded on a monthly basis from December 2005 to July 2014 by the RSPCA Greater Manchester Animal Hospital. The percentage of cats found to be pregnant was calculated for each month and the 8.5 years of data were binned into calendar months. The mean and SD of the monthly pregnancy rate was calculated for each calendar month bin, as was the difference between the mean percentage of detected pregnancies and the global mean. The Z score for each month's difference was then calculated. RESULTS Data were available for 5414 cats neutered during the 8.5 consecutive years of this study. A global average of 8.9% of cats spayed were found to be pregnant. The mean calendar month pregnancy rate exhibited a very significant variation, with the highest positive deviation being in April (Z score +2.9) and the highest negative deviation being in November/December (Z score -4.5). When aggregated into 3 month averages, an extremely significant difference between 'spring' and 'winter' months of >7 SE (P <<0.01) was found. CONCLUSIONS AND RELEVANCE This study provides clear statistical evidence, from a large data set, that seasonal breeding patterns are still present under UK temperate conditions. We discuss the impact that this has on charity rescue shelters and propose that a campaign targeted at clients of animal welfare charities encouraging autumn neutering will be the most cost-effective method of cat population control, and help relieve the demand on welfare charity resources.
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Affiliation(s)
- Amy L Jennett
- Faculty of Medical and Veterinary Sciences, Bristol University, Bristol, UK
| | - Nigel M Jennett
- Faculty of Engineering and Computing, Coventry University, Coventry, UK
| | - Joanna Hopping
- Faculty of Medical and Veterinary Sciences, Bristol University, Bristol, UK
| | - David Yates
- Greater Manchester Animal Hospital RSPCA, Manchester, UK
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Kutzler MA. Alternative methods for feline fertility control: Use of melatonin to suppress reproduction. J Feline Med Surg 2016; 17:753-7. [PMID: 26323798 DOI: 10.1177/1098612x15594988] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
PRACTICAL RELEVANCE Reversible contraceptives are highly desired by purebred cat breeders for managing estrous cycles and by scientists managing assisted reproduction programs. A variety of alternative medicine approaches have been explored as methods to control feline fertility. SCOPE In the field of veterinary homeopathy, wild carrot seed and papaya have been used for centuries. Both appear to be safe, but their efficacy as feline contraceptives remains anecdotal. In contrast, the use of melatonin in cats has been investigated in a number of studies, findings from which are reviewed in this article. RATIONALE Cats are seasonally polyestrous (they cycle several times during their breeding season) and are described as long-day breeders because endogenous melatonin negatively regulates estrous cyclicity. Exogenous melatonin administered parenterally also suppresses ovarian activity in cats, and long-term oral or subcutaneous melatonin administration is safe. CHALLENGES The therapeutic use of melatonin is limited by its short biological half-life (15-20 mins), its poor oral bioavailability and its central effects in reducing wakefulness. Research is required to determine whether higher doses, longer-release formulations, repeated administration or combination implants might overcome these limitations.
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Affiliation(s)
- Michelle A Kutzler
- Associate Professor of Companion Animal Industries, Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, Oregon, USA
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Vansandt LM, Livesay JL, Dickson MJ, Li L, Pukazhenthi BS, Keefer CL. Conservation of spermatogonial stem cell marker expression in undifferentiated felid spermatogonia. Theriogenology 2016; 86:1022-1035.e3. [PMID: 27129396 DOI: 10.1016/j.theriogenology.2016.03.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/18/2016] [Accepted: 03/19/2016] [Indexed: 02/05/2023]
Abstract
Spermatogonial stem cells (SSCs) are distinct in their ability to self-renew, transmit genetic information, and persist throughout the life of an individual. These characteristics make SSCs a useful tool for addressing diverse challenges such as efficient transgenic production in nonrodent, biomedical animal models, or preservation of the male genome for species in which survival of frozen-thawed sperm is low. A requisite first step to access this technology in felids is the establishment of molecular markers. This study was designed to evaluate, in the domestic cat (Felis catus), the expression both in situ and following enrichment in vitro of six genes (GFRA1, GPR125, ZBTB16, POU5F1, THY1, and UCHL1) that had been previously identified as SSC markers in other species. Antibodies for surface markers glial cell line-derived neurotrophic factor family receptor alpha 1, G protein-coupled receptor 125, and thymus cell antigen 1 could not be validated, whereas Western blot analysis of prepubertal, peripubertal, and adult cat testis confirmed protein expression for the intracellular markers ubiquitin carboxy-terminal hydrolase 1, zinc finger and BTB domain-containing protein 16, and POU domain, class 5, transcription factor 1. Colocalization of the markers by immunohistochemistry revealed that several cells within the subpopulation adjacent to the basement membrane of the seminiferous tubules and identified morphologically as spermatogonia, expressed all three intracellular markers. Studies performed on cheetah (Acinonyx jubatus) and Amur leopard (Panthera pardus orientalis) testis exhibited a conserved expression pattern in protein molecular weights, relative abundance, and localization of positive cells within the testis. The expression of the three intracellular SSC marker proteins in domestic and wild cat testes confirms conservation of these markers in felids. Enrichment of marker transcripts after differential plating was also observed. These markers will facilitate further studies in cell enrichment and IVC of felid SSCs enabling both production of transgenic domestic cats and preservation of the male genome from rare and endangered felids.
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Affiliation(s)
- Lindsey M Vansandt
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA; Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - Janelle L Livesay
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA
| | - Melissa Joy Dickson
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA
| | - Lei Li
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA
| | - Budhan S Pukazhenthi
- Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - Carol L Keefer
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA.
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Tajima H, Yoshizawa M, Sasaki S, Yamamoto F, Narushima E, Ogawa Y, Orima H, Tsutsui T, Toyonaga M, Kobayashi M, Kawakami E, Hori T. A trial of semen collection by transrectal electroejaculation method from Amur leopard cat (Prionailurus bengalensis euptilurus). J Vet Med Sci 2016; 78:1067-73. [PMID: 26935841 PMCID: PMC4937146 DOI: 10.1292/jvms.15-0439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We collected semen from a male Amur leopard cat using the transrectal electroejaculation method and
investigated the semen qualities for about four years. In addition, the influence of the season on the
spermatogenic function of the Amur leopard cat was investigated with regard to the semen qualities, testicular
volume and serum testosterone level. As a result, we could collect semen with good sperm qualities that would
be useable for artificial insemination. Some seasonality was noted in the testicular volume and serum
testosterone level. We clarified that the semen qualities were favorable before and during the female breeding
season compared with those after the breeding season.
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Affiliation(s)
- Hideo Tajima
- Inokashira Park Zoo, 1-17-6, Gotenyama, Musashino-shi, Tokyo 180-0005, Japan
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12
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Balogh O, Berger A, Pieńkowska-Schelling A, Willmitzer F, Grest P, Janett F, Schelling C, Reichler IM. 37,X/38,XY Mosaicism in a Cryptorchid Bengal Cat with Müllerian Duct Remnants. Sex Dev 2016; 9:327-32. [DOI: 10.1159/000443233] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2015] [Indexed: 11/19/2022] Open
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13
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Tiptanavattana N, Radtanakatikanon A, Hyttel P, Holm H, Buranapraditkun S, Setthawong P, Techakumphu M, Tharasanit T. Determination phase at transition of gonocytes to spermatogonial stem cells improves establishment efficiency of spermatogonial stem cells in domestic cats. J Reprod Dev 2015; 61:581-8. [PMID: 26411537 PMCID: PMC4685225 DOI: 10.1262/jrd.2015-094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The development of germ cells has not been entirely documented in the cat especially the transition phase of
the gonocyte to the spermatogonial stem cell (G/SSC). The aims of study were to examine testicular development
and to identify the G/SSC transition in order to isolate and culture SSCs in vitro. Testes
were divided into 3 groups according to donor age (I, < 4 months; II, 4–6 months; and III, > 6 months).
In Exp. 1, we studied testicular development by histology, transmission electron microscopy and
immunohistochemistry. In Exp. 2, we determined the expression of GFRα-1, DDX-4 and c-kit and performed flow
cytometry. The SSCs isolated from groups II and III were characterized by RT-PCR and TEM (Exp. 3).
Chronological changes in the G/SSC transition were demonstrated. The size, morphology and ultrastructure of
SSCs were distinguishable from those of gonocytes. The results demonstrated that group II contained the
highest numbers of SSCs per seminiferous cord/tubule (17.66 ± 2.20%) and GFRα-1+ cells (14.89 ±
5.66%) compared with the other groups. The findings coincided with an increased efficiency of SSC derivation
in group II compared with group III (74.33 ± 2.64% vs. 23.33 ± 2.23%). The colonies expressed
mRNA for GFRA1, ZBTB16, RET and POU5F1.
Our study found that the G/SSC transition occurs at 4–6 months of age. This period is useful for isolation and
improves the establishment efficiency of cat SSCs in vitro.
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Affiliation(s)
- Narong Tiptanavattana
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
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Villaverde AIS, Fioratti EG, Ramos RS, Neves RC, Ferreira JCP, Cardoso GS, Padilha PM, Lopes MD. Blood and seminal plasma concentrations of selenium, zinc and testosterone and their relationship to sperm quality and testicular biometry in domestic cats. Anim Reprod Sci 2014; 150:50-5. [DOI: 10.1016/j.anireprosci.2014.08.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 08/02/2014] [Accepted: 08/08/2014] [Indexed: 10/24/2022]
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15
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Nuñez Favre R, Bonaura M, Praderio R, Stornelli M, de la Sota R, Stornelli M. Effect of melatonin implants on spermatogenesis in the domestic cat (Felis silvestris catus). Theriogenology 2014; 82:851-6. [DOI: 10.1016/j.theriogenology.2014.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 06/14/2014] [Accepted: 06/18/2014] [Indexed: 11/25/2022]
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16
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Oliveira E, Fagundes A, Melo C, Nery L, Rêvoredo R, Andrade T, Oliveira-Esquerre K, Kastelic J, Silva V. Intratesticular injection of a zinc-based solution for contraception of domestic cats: A randomized clinical trial of efficacy and safety. Vet J 2013; 197:307-10. [DOI: 10.1016/j.tvjl.2013.01.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 01/13/2013] [Accepted: 01/17/2013] [Indexed: 12/01/2022]
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17
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Nuñez-Favre R, Bonaura MC, Tittarelli CM, Mansilla-Hermann D, de la Sota RL, Stornelli MA. Effect of Natural Photoperiod on Epididymal Sperm Quality and Testosterone Serum Concentration in Domestic Cat (Felis silvestris catus). Reprod Domest Anim 2012; 47 Suppl 6:232-4. [DOI: 10.1111/rda.12050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- R Nuñez-Favre
- Facultad de Ciencias Veterinarias; Laboratorio de Reproducción Animal; Universidad Nacional de La Plata; La Plata; Argentina
| | - MC Bonaura
- Facultad de Ciencias Veterinarias; Laboratorio de Reproducción Animal; Universidad Nacional de La Plata; La Plata; Argentina
| | - CM Tittarelli
- Facultad de Ciencias Veterinarias; Laboratorio de Reproducción Animal; Universidad Nacional de La Plata; La Plata; Argentina
| | - D Mansilla-Hermann
- Facultad de Ciencias Veterinarias; Laboratorio de Reproducción Animal; Universidad Nacional de La Plata; La Plata; Argentina
| | - RL de la Sota
- Facultad de Ciencias Veterinarias; Laboratorio de Reproducción Animal; Universidad Nacional de La Plata; La Plata; Argentina
| | - MA Stornelli
- Facultad de Ciencias Veterinarias; Laboratorio de Reproducción Animal; Universidad Nacional de La Plata; La Plata; Argentina
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18
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Clark CC, Gruffydd-Jones T, Murray JK. Number of cats and dogs in UK welfare organisations. Vet Rec 2012; 170:493. [DOI: 10.1136/vr.100524] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- C. C. Clark
- Department of Clinical Veterinary Science; University of Bristol; BS40 5DU Langford UK
| | - T. Gruffydd-Jones
- Department of Clinical Veterinary Science; University of Bristol; BS40 5DU Langford UK
| | - J. K. Murray
- Department of Clinical Veterinary Science; University of Bristol; BS40 5DU Langford UK
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