Journal ArticleDOI
Roles of Antioxidants on Prolonged Storage of Avian Spermatozoa In Vivo and In Vitro
TLDR
Dietary supplementation with vitamin E is effective in limiting lipid peroxidation of sperm plasma membranes, both in chickens and turkeys, and organic Se with or without vitamin E stimulates Se‐GSH‐Px activity in seminal plasma.Abstract:
This review focuses on natural and assisted prevention against lipid peroxidation in avian spermatozoa. The presence of high levels of n-6 polyunsaturated fatty acids (PUFAs) in the plasma membrane creates favorable conditions for the formation of peroxidative products, a major cause of membrane damage which may ultimately impair male fertility. However, a complex antioxidant system involving vitamin C, vitamin E and GSH is naturally present in avian semen. Coupled with a battery of enzymatic defenses (e.g., SOD, GSH-Px either Se- or non-Se-dependent), this system acts to prevent or restrict the formation and propagation of peroxides. The presence of specialized sites dedicated to prolonged sperm storage in avian females raises the question of durable protection of sperm membranes against peroxidation. Preliminary observations have revealed the presence of a specific antioxidant system at these sites in which vitamin C could exert a major role. From a practical standpoint, the extensive use of artificial insemination in poultry, along with the emergence in some species of workable techniques to cryopreserve spermatozoa, demand better control of peroxidation occurring in the plasma membrane of spermatozoa before or during storage. Dietary supplementation with vitamin E is effective in limiting lipid peroxidation of sperm plasma membranes, both in chickens and turkeys. In addition, organic Se with or without vitamin E stimulates Se-GSH-Px activity in seminal plasma. Preliminary observations in female chickens have also revealed the effectiveness of dietary supplementation with vitamin E, organic selenium or both to sustain fertility in aging flocks.read more
Citations
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Suivi du Développement Embryonnaire Chez la Poule domestique «Gallus gallus domesticus ».
TL;DR: The objective of this work is to follow the incubation of eggs of the domestic fowl for 21 days under specified conditions, and to get the final segmentation stage, the initial stages of gastrulating and stages 3, 5, 9, 14, 16 and 20 days of incubation corresponding to organogenesis.
Journal ArticleDOI
Growth performance and fertility of Windsnyer boars supplemented with α-tocopherol.
N. Bovula,Cyprial Ndumiso Ncobela,C. M. Pilane,Tshimangadzo Lucky Nedambale,Michael Chimonyo +4 more
TL;DR: In this paper, the response in growth performance and spermatozoa characteristics of Windsnyer boars supplemented with progressive levels of α-tocopherol was determined. And the results showed a linear response (P < 0.05) in average daily gain and feed conversion ratio.
Journal ArticleDOI
Effect of Different Concentrations of Lavandula Angustifolia Extract On Semen Quality of Rooster during Storage in Liquid Condition
TL;DR: In general, the addition of Lavandula angustifolia extract at 10 μg/ml to diluted semen of broiler roosters improved sperm parameters during semen storage at 4°C.
Journal ArticleDOI
Effect of prooxidants and chelator Desferal on the oxidative status and sperm motility of Muscovy semen
V. Gerzilov,Albena Alexandrova,M. Andreeva,Elina Tsvetanova,Almira Georgieva,Petar D. Petrov,R. Stefanov +6 more
TL;DR: In this article , the effect of Desferal on Muscovy duck semen motility and kinetic parameters, as well as the level of lipid peroxidation (LPO) and glutathione (tGSH) was investigated.
Journal ArticleDOI
Increased male-induced harm in response to female-limited selection: interactive effects between intra- and interlocus sexual conflict?
TL;DR: The authors used an artificial selection approach in Japanese quail (Coturnix japonica) to test if female-limited selection on reproductive investment affects the amount of harm caused by males during mating.
References
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Journal ArticleDOI
Reactive oxygen species and human spermatozoa. I. Effects on the motility of intact spermatozoa and on sperm axonemes.
E. de Lamirande,Claude Gagnon +1 more
TL;DR: The data suggest that ROS induce a chain of events leading to sperm immobilization, that axonemes are affected, and that limited endogenous repair mechanisms exist to reverse these damages.
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Role of glutathione peroxidase in protecting mammalian spermatozoa from loss of motility caused by spontaneous lipid peroxidation.
Juan G. Alvarez,Bayard T. Storey +1 more
TL;DR: A mechanism for spontaneous lipid peroxidation in mammalian sperm is postulated which involves reaction of lipid hydroperoxide and O2 as the rate-determining step and the key intermediate is lipid hydro peroxide generated by a chain reaction initiated by and utilizing superoxide.
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Lipid composition and thermotropic phase behavior of boar, bull, stallion, and rooster sperm membranes.
John E. Parks,Daniel V. Lynch +1 more
TL;DR: A difference in both composition and thermotropic phase behavior of glycolipids between rooster and mammalian sperm is demonstrated which may be related to the greater tolerance of rooster sperm to rapid cooling.
Journal ArticleDOI
Lipid peroxidation in human spermatozoa as related to midpiece abnormalities and motility.
TL;DR: The results suggest that poor motility is linked with membrane fragility and that spermatozoa with midpiece abnormalities probably have membrane and/or cytoplasmic antiperoxidant system defects.