EFFECT OF EQUILIBRATION TIME AT 5 °C AND PHOTOPERIOD ON SURVIVAL OF RAM SPERMATOZOA FROZEN IN STRAWS | Zendy

P.S. Fiser | Zendy; T.R. Batra | Zendy

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EFFECT OF EQUILIBRATION TIME AT 5 °C AND PHOTOPERIOD ON SURVIVAL OF RAM SPERMATOZOA FROZEN IN STRAWS

Author(s) -

P.S. Fiser,

T.R. Batra

Publication year - 1984

Publication title -

canadian journal of animal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1918-1825

pISSN - 0008-3984

DOI - 10.4141/cjas84-087

Subject(s) - semen , photoperiodism , andrology , zoology , biology , chemistry , botany , medicine

The effect of various equilibration times at 5 °C on the cryosurvival of ram spermatozoa frozen in 0.5-mL straws was assessed for semen collected during decreasing and increasing photoperiods. The percentage and rate of forward progression of motile spermatozoa increased significantly from 0 to 2 h equilibration, remained constant from 2 to 6 h and decreased significantly at 18 h. Kinetic rating of motile spermatozoa changed similarly. Photoperiod has a significant (P < 0.01) effect on survival of spermatozoa at all equilibration times, but rate of forward progression was affected only at the 0 h equilibration time. Key words: Spermatozoa survival, equilibration time, frozen-thawed semen, rams

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