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Lipids and calcium uptake of sperm in relation to cold shock and preservation: a review.

Author(s) : WHITE I. G.

Type of article: Article, Review

Summary

When sperm of the ram, bull, boar and stallion are cold-shocked by rapid cooling to near freezing point, motility and metabolic activity are irreversibly depressed and the acrosome and plasma membrane disrupted. Ram sperm becomes susceptible to cold shock in the proximal corpus region of the epididymis when the cytoplasmic droplet has moved backwards to the distal portion of the sperm midpiece. Phospholipids, particularly those in egg yolk, protect sperm to some extent from cold shock and also prevent increased calcium flux into the sperm. Suggestions are made for increasing the life span of sperm during preservation and microencapsulation by adding agents that may stabilize membranes, counter peroxidation and decrease calcium uptake.

Details

  • Original title: Lipids and calcium uptake of sperm in relation to cold shock and preservation: a review.
  • Record ID : 1994-3887
  • Languages: English
  • Source: Reprod. Fertil. Dev. - vol. 5 - n. 6
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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