The Experts below are selected from a list of 30450 Experts worldwide ranked by ideXlab platform
Damien B B P Paris - One of the best experts on this subject based on the ideXlab platform.
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social rank does not affect Sperm Quality in male african wild dogs lycaon pictus
Reproduction Fertility and Development, 2019Co-Authors: Femke Van Den Berghe, M C J Paris, Zoltan Sarnyai, M B Briggs, Robert P Millar, Andre Ganswindt, Damien B B P ParisAbstract:Sperm banking and AI could benefit endangered African wild dog conservation. However, it is unclear whether their dominance hierarchy causes a decrease in reproductive and Sperm Quality parameters in subordinate males that typically do not breed. In this study, we investigated the effect of social rank on male reproductive parameters, including faecal androgen and glucocorticoid metabolite concentrations, prostate and testes volume, preputial gland size, semen collection success and Sperm Quality. Samples were obtained from captive males (prebreeding season: n = 12 from four packs; breeding season: n = 24 from seven packs) that were classified as alpha (dominant), beta or gamma (subordinates) based on the frequency of dominant versus submissive behaviours. In the prebreeding season, semen was successfully collected from all alpha but only half the subordinate males, with urine contamination (associated with lower rank) significantly reducing total and progressive motility, Sperm motility index, normal Sperm morphology and acrosome integrity. The breeding season was associated with a significant increase in faecal androgens, prostate and testis volume, as well as progressive motility and the total number of Spermatozoa ejaculated. However, with the exception of prostate volume (mean ± s.e.m: 12.5 ± 4.5, 7.1 ± 1.0 and 7.3 ± 1.0 cm3 in alpha, beta and gamma males respectively; P = 0.035), all other reproductive and Sperm Quality parameters did not differ between males of each social rank. In conclusion, reproductive suppression of subordinate males appears to be behaviourally mediated, because males of all social ranks produce semen of similar Quality, making them suitable candidates for Sperm banking, particularly during the breeding season when Sperm Quality improves.
Andre Ganswindt - One of the best experts on this subject based on the ideXlab platform.
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social rank does not affect Sperm Quality in male african wild dogs lycaon pictus
Reproduction Fertility and Development, 2019Co-Authors: Femke Van Den Berghe, M C J Paris, Zoltan Sarnyai, M B Briggs, Robert P Millar, Andre Ganswindt, Damien B B P ParisAbstract:Sperm banking and AI could benefit endangered African wild dog conservation. However, it is unclear whether their dominance hierarchy causes a decrease in reproductive and Sperm Quality parameters in subordinate males that typically do not breed. In this study, we investigated the effect of social rank on male reproductive parameters, including faecal androgen and glucocorticoid metabolite concentrations, prostate and testes volume, preputial gland size, semen collection success and Sperm Quality. Samples were obtained from captive males (prebreeding season: n = 12 from four packs; breeding season: n = 24 from seven packs) that were classified as alpha (dominant), beta or gamma (subordinates) based on the frequency of dominant versus submissive behaviours. In the prebreeding season, semen was successfully collected from all alpha but only half the subordinate males, with urine contamination (associated with lower rank) significantly reducing total and progressive motility, Sperm motility index, normal Sperm morphology and acrosome integrity. The breeding season was associated with a significant increase in faecal androgens, prostate and testis volume, as well as progressive motility and the total number of Spermatozoa ejaculated. However, with the exception of prostate volume (mean ± s.e.m: 12.5 ± 4.5, 7.1 ± 1.0 and 7.3 ± 1.0 cm3 in alpha, beta and gamma males respectively; P = 0.035), all other reproductive and Sperm Quality parameters did not differ between males of each social rank. In conclusion, reproductive suppression of subordinate males appears to be behaviourally mediated, because males of all social ranks produce semen of similar Quality, making them suitable candidates for Sperm banking, particularly during the breeding season when Sperm Quality improves.
Femke Van Den Berghe - One of the best experts on this subject based on the ideXlab platform.
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social rank does not affect Sperm Quality in male african wild dogs lycaon pictus
Reproduction Fertility and Development, 2019Co-Authors: Femke Van Den Berghe, M C J Paris, Zoltan Sarnyai, M B Briggs, Robert P Millar, Andre Ganswindt, Damien B B P ParisAbstract:Sperm banking and AI could benefit endangered African wild dog conservation. However, it is unclear whether their dominance hierarchy causes a decrease in reproductive and Sperm Quality parameters in subordinate males that typically do not breed. In this study, we investigated the effect of social rank on male reproductive parameters, including faecal androgen and glucocorticoid metabolite concentrations, prostate and testes volume, preputial gland size, semen collection success and Sperm Quality. Samples were obtained from captive males (prebreeding season: n = 12 from four packs; breeding season: n = 24 from seven packs) that were classified as alpha (dominant), beta or gamma (subordinates) based on the frequency of dominant versus submissive behaviours. In the prebreeding season, semen was successfully collected from all alpha but only half the subordinate males, with urine contamination (associated with lower rank) significantly reducing total and progressive motility, Sperm motility index, normal Sperm morphology and acrosome integrity. The breeding season was associated with a significant increase in faecal androgens, prostate and testis volume, as well as progressive motility and the total number of Spermatozoa ejaculated. However, with the exception of prostate volume (mean ± s.e.m: 12.5 ± 4.5, 7.1 ± 1.0 and 7.3 ± 1.0 cm3 in alpha, beta and gamma males respectively; P = 0.035), all other reproductive and Sperm Quality parameters did not differ between males of each social rank. In conclusion, reproductive suppression of subordinate males appears to be behaviourally mediated, because males of all social ranks produce semen of similar Quality, making them suitable candidates for Sperm banking, particularly during the breeding season when Sperm Quality improves.
S K Atreja - One of the best experts on this subject based on the ideXlab platform.
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effects of adding taurine and trehalose to a tris based egg yolk extender on buffalo bubalus bubalis Sperm Quality following cryopreservation
Animal Reproduction Science, 2010Co-Authors: Shiva Shankar N Reddy, Jagan G Mohanarao, S K AtrejaAbstract:Abstract Cryopreservation induces sublethal damage to the Spermatozoa, which leads to their reduced fertile life. Under the present study, the cryoprotective effect of taurine and trehalose on buffalo Sperm Quality parameters after freeze–thaw process was studied. Buffalo semen was cryopreserved in tris-based egg yolk extender along with cryoprotectants like taurine (50 mM) or trehalose (100 mM) and used for the assessment of Sperm Quality parameters like motility, viability, plasma membrane integrity, total antioxidant status and the extent of cryocapacitation. The results were compared to semen cryopreserved in tris-based egg yolk extender only as control. Post-thaw semen evaluation clearly indicated that the addition of taurine or trehalose significantly improved ( P P
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effects of adding taurine and trehalose to a tris based egg yolk extender on buffalo bubalus bubalis Sperm Quality following cryopreservation
Animal Reproduction Science, 2010Co-Authors: Shiva Shankar N Reddy, Jagan G Mohanarao, S K AtrejaAbstract:Cryopreservation induces sublethal damage to the Spermatozoa, which leads to their reduced fertile life. Under the present study, the cryoprotective effect of taurine and trehalose on buffalo Sperm Quality parameters after freeze-thaw process was studied. Buffalo semen was cryopreserved in tris-based egg yolk extender along with cryoprotectants like taurine (50 mM) or trehalose (100 mM) and used for the assessment of Sperm Quality parameters like motility, viability, plasma membrane integrity, total antioxidant status and the extent of cryocapacitation. The results were compared to semen cryopreserved in tris-based egg yolk extender only as control. Post-thaw semen evaluation clearly indicated that the addition of taurine or trehalose significantly improved (P<0.05) the motility, viability and membrane integrity compared to control Spermatozoa. The extent of Sperm cells underwent cryocapacitation was significantly lowered (P<0.05) in presence of taurine or trehalose. Moreover, the percentage of in vitro capacitated cells in the treated samples was comparable to the control Spermatozoa along with maintaining other Sperm Quality parameters. Finally, compared to the control and trehalose treated sample, addition of taurine to the freezing extender showed more positive effect on the total antioxidant power of seminal plasma and Spermatozoa. It is concluded that the addition of taurine or trehalose to the freezing extender led to the reduction of cryodamage to the buffalo Spermatozoa.
M C J Paris - One of the best experts on this subject based on the ideXlab platform.
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social rank does not affect Sperm Quality in male african wild dogs lycaon pictus
Reproduction Fertility and Development, 2019Co-Authors: Femke Van Den Berghe, M C J Paris, Zoltan Sarnyai, M B Briggs, Robert P Millar, Andre Ganswindt, Damien B B P ParisAbstract:Sperm banking and AI could benefit endangered African wild dog conservation. However, it is unclear whether their dominance hierarchy causes a decrease in reproductive and Sperm Quality parameters in subordinate males that typically do not breed. In this study, we investigated the effect of social rank on male reproductive parameters, including faecal androgen and glucocorticoid metabolite concentrations, prostate and testes volume, preputial gland size, semen collection success and Sperm Quality. Samples were obtained from captive males (prebreeding season: n = 12 from four packs; breeding season: n = 24 from seven packs) that were classified as alpha (dominant), beta or gamma (subordinates) based on the frequency of dominant versus submissive behaviours. In the prebreeding season, semen was successfully collected from all alpha but only half the subordinate males, with urine contamination (associated with lower rank) significantly reducing total and progressive motility, Sperm motility index, normal Sperm morphology and acrosome integrity. The breeding season was associated with a significant increase in faecal androgens, prostate and testis volume, as well as progressive motility and the total number of Spermatozoa ejaculated. However, with the exception of prostate volume (mean ± s.e.m: 12.5 ± 4.5, 7.1 ± 1.0 and 7.3 ± 1.0 cm3 in alpha, beta and gamma males respectively; P = 0.035), all other reproductive and Sperm Quality parameters did not differ between males of each social rank. In conclusion, reproductive suppression of subordinate males appears to be behaviourally mediated, because males of all social ranks produce semen of similar Quality, making them suitable candidates for Sperm banking, particularly during the breeding season when Sperm Quality improves.
