Yolk concentrations of hormones and glucose and egg weight and egg dimensions in unincubated chicken eggs, in relation to egg sex and hen body weight

Aslam, Muhammad; Hulst, M.M.; Hoving-Bolink, Rita; Smits, M.A.; Vries, Bonnie de; Weites, I. M.; Groothuis, Ton G. G.; Woelders, H.

doi:10.1016/j.ygcen.2013.02.045

Cited by 23 publications

(16 citation statements)

References 58 publications

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“…As 20% egg yolk is used in semen extender, the final progesterone concentration (438.44 ng/mL) in extender was as high as the physiological concentration of progesterone in oviduct 15 . In addition to progesterone, testosterone and estradiol are present in egg yolk 16 . The non-genomic progesterone receptors on sperm membrane are also activated by testosterone and estradiol but lesser intensity and induce calcium influx into spermatozoa 17 .…”

Section: Discussionmentioning

confidence: 99%

A new role for RU486 (mifepristone): it protects sperm from premature capacitation during cryopreservation in buffalo

Dalal

Kumar

Chandolia

et al. 2019

Sci Rep

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The objective of this study was to determine the mechanism by which RU 486 (mifepristone) protects sperm to undergo premature capacitation during cryopreservation. For this, semen ejaculate (n = 20) was divided into four equal fractions and diluted using egg yolk-based extender supplemented with different concentrations of RU 486 (0, 5, 10 and 20 µM) and cryopreserved. We found that RU 486 did not impair the post-thaw sperm kinetics and motility but prevented cholesterol efflux, calcium influx, and protected CatSper channels during cryopreservation. The RU 486 protected sperm from premature capacitation which was confirmed by intracellular calcium level, expression of tyrosine phosphorylated proteins (75 and 80 kDa) and CTC (chlortetracycline) assay. Furthermore, antioxidant ability of RU 486 was reflected by the ferric reducing ability, lower production of sperm malondialdehyde and intracellular reactive oxygen species. Also, we demonstrated that RU 486 treated sperm underwent normal capacitation, zona pellucida binding and zygote cleavage indicating normal fertilizing ability of sperm. In conclusion, we report a new role of RU 486 in protecting buffalo sperm from premature capacitation during cryopreservation.

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Section: Discussionmentioning

confidence: 99%

A new role for RU486 (mifepristone): it protects sperm from premature capacitation during cryopreservation in buffalo

Dalal

Kumar

Chandolia

et al. 2019

Sci Rep

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“…(Björkroth and Holzapfel, 2006;Holt and Cote, 1998;Kim et al, 2001;Naessens et al, 2005), while biosynthesis of heteropolysaccharides has not been encountered for members of the genus. However, in this medium no sucrose was supplemented, whereas only residual amounts of glucose were available from the eggs (Aslam et al, 2013). Slime production did not show any correlation to attachment, although it has been linked A B Fig.…”

Section: Tablementioning

confidence: 85%

Exploring the strain-specific attachment of Leuconostoc gelidum subsp. gasicomitatum on food contact surfaces

Pothakos

Aulia

Linden

et al. 2015

International Journal of Food Microbiology

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“…The effects cannot be explained by differential androgen deposition in the eggs, since there were no differences in either yolk T concentration or yolk A4 concentrations between the treatments (which may explain the lack of behavioural differences between TE and CE chicks). Unless the treatment induced sex specific hormone deposition in the eggs, for which currently there is some evidence 8,55,56 , but see 57 . This would require that females know the sex of their eggs before laying.…”

Section: Discussionmentioning

confidence: 99%

Ejaculate testosterone levels affect maternal investment in red junglefowl (Gallus gallus gallus)

Lelono

Riedstra

Groothuis

2019

Sci Rep

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Substantial concentrations of testosterone are not only present in a male’s circulation, but also in its ejaculate. Surprisingly, the regulation of ejaculate T and its effects on females and their offspring, potentially a cryptic paternal trait, are not known. We found lower circulating and higher ejaculate T concentrations in subordinate red junglefowl ( Gallus gallus gallus ) males compared to dominant males, suggestive of an adaptive trade-off in T allocation to circulation and their ejaculate. Subsequently, we artificially inseminated females with either testosterone enriched (TE) or control ejaculates (CE) in a cross-over design. TE females produced heavier eggs than CE females. Offspring growth and tonic immobility were affected in a sex-specific way by TE. TE sons were heavier with shorter TI duration than CE sons, and TE daughters were lighter than CE daughters but daughters did not differ in TI score. However, the chicks competitiveness was not influenced by the TE nor CE. This indicates a previously unknown function of ejaculate testosterone as well as a new form of interaction between a cryptic paternal trait and a maternal effect that may be widespread in the animal kingdom.

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Yolk concentrations of hormones and glucose and egg weight and egg dimensions in unincubated chicken eggs, in relation to egg sex and hen body weight

Cited by 23 publications

References 58 publications

A new role for RU486 (mifepristone): it protects sperm from premature capacitation during cryopreservation in buffalo

A new role for RU486 (mifepristone): it protects sperm from premature capacitation during cryopreservation in buffalo

Exploring the strain-specific attachment of Leuconostoc gelidum subsp. gasicomitatum on food contact surfaces

Ejaculate testosterone levels affect maternal investment in red junglefowl (Gallus gallus gallus)

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