Artificial Insemination in Dogs

Costa, Eduardo Paulino da; Costa, A. H. A.; Macedo, Gustavo Guerino; Pereira, E. C. M.

doi:10.5772/20630

Cited by 6 publications

(6 citation statements)

References 51 publications

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Section: Discussionmentioning

confidence: 99%

“…Factors affecting semen quality in dogs are the age and general health of the male, together with the frequency of collection, the presence of a bitch in oestrus and the season of the year [ 23 , 24 ]. Dog ejaculates have intra-individual and inter-individual differences in quality and volume [ 23 , 24 ]. The quantitative parameters of the ejaculate (mainly the total number of spermatozoa) obtained during subsequent collections are only comparable when sperm was collected at regular intervals, e.g., every 7 days [ 23 ].…”

Section: Discussionmentioning

confidence: 99%

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A Comparative Study of the Effects of Osaterone Acetate and Deslorelin Acetate on Sperm Kinematics and Morpho-Functional Parameters in Dogs

Niżański

Eberhardt

Ochota

et al. 2022

Animals

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Benign prostatic hyperplasia (BPH) is one of the most common problems in older male dogs that often has a huge impact on their health and welfare. This article presents a comparison between osaterone acetate (Ypozane®; Virbac®)(OA) and deslorelin acetate (Suprelorin®; Virbac®)(DA), medications that are the main therapeutic alternative to castration in dogs with BPH. Forty dogs were divided into four groups: I—negative control (five dogs without BPH); II—positive control (10 individuals diagnosed with BPH); III—15 dogs treated with DA, and IV—10 individuals treated with OA. Semen fractions were collected on days 0 (day of treatment), 7, 14, and 21, and weeks 8, 12, 16, and 20. Macroscopic, microscopic and CASA analyses were performed. Both DA and OA significantly affected the properties of the canine ejaculate. The DA lead to the lack of libido and had lesser effects to the sperm function before it caused azoospermia, whereas OA had no effect on libido and only temporary reduction in seminal plasma volume was observed, which resulted in temporary deterioration in the percentage of motile and progressive spermatozoa.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A Comparative Study of the Effects of Osaterone Acetate and Deslorelin Acetate on Sperm Kinematics and Morpho-Functional Parameters in Dogs

Niżański

Eberhardt

Ochota

et al. 2022

Animals

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“…Artificial insemination (AI) is the procedure of instrumentally inserting semen collected from a male into the female's reproductive tract. In dogs, the use of AI has increased steadily and the preparation of fresh, fresh chilled, and frozen‐thawed semen increasingly supports breeding and sharing genes between countries and continents (Payan‐Carreira, Miranda, & Niżański, ) The use of AI to overcome physical or mental defects or lack of libido in dogs that preclude natural sexual behaviour or mating may not be acceptable if the defect is considered hereditary. However, for most of the conditions that prevent natural mating scientific data on the heritability is scarce.…”

Section: Breeding Of Sports‐and Companion Animals: Dogs Cats and Homentioning

confidence: 99%

Ethics in animal breeding

Farstad

2018

Reprod Domestic Animals

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Contents Ethical breeding involves the use of healthy animals true to their species in behaviour and physical appearance, and when applicable, showing a sustainable performance. The concerns for the species/breed are essential parts of the breeding goals, including preservation of genetic resources within the species/breed, and the health and welfare of the individual animal. Ethical and welfare considerations were often not prioritized in developing new breeds of production or companion animals. As a result, animal breeding practices are increasingly becoming part of the debate on animal welfare. In companion animals, breeding for curiosity or “cuteness” may be a goal in itself, although dogs are also bred for utility. In production animals, breeding focus is on performance, i.e., quantitative entities and financial income, rather than physical appearance. For instance, dairy cows are bred to be larger and to have higher milk yields, sows and ewes to produce more offspring, and horses are designed for riding, racing, and companionship. Overbreeding in relation to current demand of horses, cats, and dogs raises welfare issues due to abandonment or killing of horses and millions of cats and dogs every year. There is variable regulation of health requirements for breeding animals in different countries of the world. In many countries, consumers are becoming increasingly aware of animal welfare issues such as negative effects of certain production traits in farm animals, leading to decreased demand for their meat at a time where increased food production is becoming crucial. Amidst these dilemmas are the veterinarians. This paper deals with issues connected to traditional breeding as well as some of the breeding technologies, and includes food safety, ethics, and animal welfare.

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“…One of the major limitation for the use of sperm sexing in the dog, as well as in other species, is the long sorting time necessary in order to obtain the number of sexed spermatozoa necessary for artificial insemination (AI) (approximately 150-200 million motile spermatozoa) [7]. Rodenas et al, [5] reported that is possible to collect 14-16 x 10 6 dog sexed spermatozoa per hour in the best samples; therefore conventional AI is not feasible in this species.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the number of spermatozoa requested in dog for a intrauterine low-dose insemination (at least 50 million) [7] is very high considering the sorting time and, therefore, sperm cells have to be stored properly at room temperature waiting to be sexed.…”

Section: Introductionmentioning

confidence: 99%

Sex-sorted canine sperm cryopreservation: Limits and procedural considerations

et al. 2015

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The aim of this study was to define a protocol to store dog sperm before and after sorting to obtain an insemination dose sufficient to allow the conception by artificial insemination. Experiment 1 and 2 were performed to evaluate the more appropriate extender for preserving at room temperature dog sperm before and after sorting. Four extenders were tested: (1) Tris-fructose-citrate (TFC), (2) Tris-glucose-citrate (TGC), (3) modified Tyrode's albumin lactate pyruvate medium (mTALP), and (4) third fraction of the ejaculate (after centrifugation at 5000× g for 10 minutes; III FRAC). Experiment 3 and 4 were performed to evaluate the ability of dog semen to withstand sex sorting and freezing/thawing. Modified Tyrode's albumin lactate pyruvate medium was the best extender for canine sperm storage at room temperature (20 °C-25 °C) before (total motility: TFC, 8.3 ± 1.7; TGC, 50.0 ± 11.5; mTALP, 70.0 ± 0.1; III FRAC, 25.0 ± 1 0.4; P < 0.05) and after sorting (total motility: TFC, 7.3 ± 1.5; TGC, 10.3 ± 1.5; mTALP, 33.3 ± 6.7; III FRAC, 8.7 ± 5.8; P < 0.05), even if at 24-hour sorted sperm quality was impaired in all extenders tested herein. Sperm quality decreased after sorting (total motility: control, 92.5 ± 0.9; sorted, 52.9 ± 6.0; P < 0.05) and, especially, after freezing/thawing (total motility: frozen control, 25.7 ± 4.1; frozen sorted, 2.4 ± 1.2; P < 0.05). In conclusion, mTALP is an appropriate medium for canine sperm storage before and soon after sorting (hours), but a long storage period of sexed sperm at room temperature is not adequate. Cryopreservation greatly impaired sperm quality, and further studies are needed to optimize the freezing protocol for sexed dog sperm.

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Artificial Insemination in Dogs

Cited by 6 publications

References 51 publications

A Comparative Study of the Effects of Osaterone Acetate and Deslorelin Acetate on Sperm Kinematics and Morpho-Functional Parameters in Dogs

A Comparative Study of the Effects of Osaterone Acetate and Deslorelin Acetate on Sperm Kinematics and Morpho-Functional Parameters in Dogs

Ethics in animal breeding

Sex-sorted canine sperm cryopreservation: Limits and procedural considerations

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