Browsing by Author "Edwin, M.John"
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ArticleItem Open Access Cold Shock Test and Freezabillty of Murrah Buffalo Spermatozoa(TANUVAS, Chennai, 1990-10) Edwin, M.John; Easwaran, B.M.; Thangaraju, P.; TANUVASSudden reduction in temprature to below 5 C affect the vit1lity of spermatozoa of most farm animals and this harmful effect of sudden cooling is known as 'temperature' or 'cold shock' (Milovanov; 1934). Cold shock resistance test has shown relevance with invitro preservation and fertility (Lasley and Bogart 1943, Sengupta et aI. 1963, Copalakrishna and Rao 1979, Chinnaiya and Ganguli 1978) Wide range of individual variations for frozen semen production among buffalo bulls prompted us to evaluate the usefulness of this simple test for screening buffalo bulls for their freezability.ThesisItem Open Access Computer Automated Motility and Morphometric Analysis of Bull and Buck Spermatozoa(TANUVAS, 2003) Karthikeya, G.; TANUVAS; Edwin, M.John; Kalatharan, J.; Asokan, S.A.ArticleItem Open Access Inter-Relationship between the Total Protein Content Of Buffalo Seminal, Plasma and Freezability of Spermatozoa(TANUVAS, Chennai, 1990-08) Edwin, M.John; Krishnan, A.R.; Easwaran, B.M.; TANUVASThe seminal plasma of mammals play a decisive role in the protection of spermatozoa during cooling. Heteroplasmic and heterospermic studies of Ganguli (1978) revealed that the seminal plasma plays a definite role in spermatozoan motility, survival and viability. Protein may increase the the permeability of biological membranes and it has been suggested that the basic proteins of the seminal vesicles have a similar effect on the membrane of spermatozoa (Hibbitt and Benians, 1971). High protein content in boar semen was shown to render the sperm cell membrane susceptable to injury by cooling and deep freezing (Lavon and Boursnell, 1971).