The relationship between rabbit semen characteristics and reproductive performance after artificial insemination

Brun, Jean- Michel J.- . M.; Theau-Clément, Michèle; Bolet, Gérard

doi:10.1016/s0378-4320(01)00197-x

Cited by 63 publications

(84 citation statements)

References 9 publications

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“…Thus, libido, the presence or absence of gel, volume, percentage of progressive sperms, curvilinear velocity, beat frequency of the flagellum, straightness and linearity of sperm movement did not affect fertility, prolificacy or productivity. These results are in accordance with Brun et al (2002). Among these semen parameters, only Lavara et al (2005) obtained a negative but significant correlation between the linearity of sperm movement and fertility (r = −0.32), using heterospermic pools.…”

Section: Means and Variations Of Reproductive Performancessupporting

confidence: 86%

“…We did not find any information in the literature on this subject and this result therefore appears to be original. In agreement with Brun et al (2002), fertility was strongly influenced (P < 0.001) by mass motility observed under a microscope (+8 percentage points of fertility when the semen showed at least a beginning of wave motion), by the percentage of motile cells observed by image analysis (+8 percentage points of fertility when it increased from the first to the second class, that is, from an average of 73% to 89% motile cells) and by the percentage of rapid sperms (+12 percentage points of fertility only when it increased from 64% to 79%). Lavara et al (2005) obtained a significant correlation between the percentage of motile cells and the kindling rate (r = 0.31; P < 0.05) using heterospermic pools.…”

Section: Means and Variations Of Reproductive Performancessupporting

confidence: 77%

“…Immediately after semen collection, pH, volume and mass motility (coded from 0 to 9) were estimated according to Brun et al (2002). Sperm cell motility was analysed from a 2-ml sample after dilution (1 : 40) in Galap (IMV Technologies, L'Aigle, France) using a computer-assisted sperm analysis system (HTMA-IVOS, version 10; Hamilton-Thorne Research, Beverly, MA, USA) according to the set-up parameters of Brun et al (2006).…”

Section: Methodsmentioning

confidence: 99%

“…In these conditions, Lavara et al (2005), using heterospermic pools but a relatively low number of sperms per insemination (6 × 10 6 spz/dose), obtained a correlation of 0.31 between the percentage of motile sperms assessed by image analysis and fertility. Some other studies integrate the physiological status of does at the moment of insemination using homospermic inseminations (1 ejaculate/ AI dose; Brun et al, 2002). Both types of studies apply a high selection of semen, particularly on the mass motility.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, the pregnancy rate drastically drops below 6, which justifies the elimination of semen under this value (Boussit, 1989). In these conditions, Brun et al (2002) used four genetic types (54 bucks, 216 ejaculates and 839 inseminations) to show that fertility is influenced by mass motility (microscopic observation), whereas prolificacy is more closely related to the concentration and dependent variables.…”

Section: Introductionmentioning

confidence: 99%

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Relationships between rabbit semen characteristics and fertilising ability after insemination

Theau-Clément

Ailloud

Sánchez

et al. 2016

Animal

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This study aimed to analyse the relationship between rabbit semen characteristics and semen fertilising ability after insemination, which is generally found to be weak. Our hypothesis was that using high semen dilutions (1 : 19), non-oestrus-stimulated does, and homospermic inseminations would make it easier to predict semen fertilising ability. Semen characteristics were evaluated on 275 ejaculates of 128 INRA1001 bucks, distributed into five successive batches. A total of 1970 inseminations were performed. The continuous semen variables were subdivided into three classes of similar size to account for any non-linear relationship between semen characteristics and fertilising ability. Mass motility was divided into two classes according to the presence or absence of waves under microscope observation. Libido, the presence or absence of gel, volume, percentage of progressive sperms, curvilinear velocity, beat frequency of the flagellum, and straightness and linearity of sperm movement did not affect fertility, prolificacy or productivity. It was confirmed that mass motility, estimated by visual observation under the microscope, significantly influenced fertility as well as the percentage of motile and of rapid sperms, and the amplitude of lateral head displacement, estimated by a computer-assisted semen analysis system. To a lesser extent, the percentage of motile cells and of rapid cells significantly influenced prolificacy. Consequently, mass motility and the percentage of motile cells significantly influenced rabbit doe productivity (+1 live births/AI when the semen showed at least a beginning of wave movement, or when the percentage of motile cells was >84%). Interestingly, a gain of 1.5 rabbits was observed when the percentage of rapid cells changed from 64% to 79%, whereas productivity significantly dropped beyond 83% of rapid cells, reflecting a non-linear relationship.Keywords: rabbit, semen characteristics, fertilising ability ImplicationsThe relationship between rabbit semen characteristics and semen fertilising ability is generally found to be weak. Nevertheless, our results obtained using a high dilution and homospermic inseminations on rabbit does not stimulated for oestrus show that a simple selection on mass motility allows increasing productivity by one rabbit born alive per insemination, when the semen shows at least a beginning of wave movement. Moreover, computer-assisted semen evaluation provides additional markers of fertilising ability (such as the percentage of rapid sperms, and the amplitude of lateral head displacement) possibly non-linearly related to fertilising ability.

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Section: Means and Variations Of Reproductive Performancessupporting

confidence: 86%

Section: Means and Variations Of Reproductive Performancessupporting

confidence: 77%