Survival rate of bull spermatozoa supplemented with prostaglandin F2α, progesterone and estrogen in culture media [electronic resource].

Includes references.

Three aduh Friesian bulls were used in this experimenL Pooled semen samples from bulls were used 10 study the effect of PGF2α, estrogen and progesterone supplementation on the srurvival role of spermatozoa during preservation at 50C in yolk cilrole buffer. Eoch of these supplements waY odded at three levels: 100. 200 and 300 mg per ml extender. The levels of 100 and 200 mg PGF,a per ml were signifICantly (p<0.05) the best in maintaining sperm motility and livability during preservation. Semen supplemenlalion in all levels of progesterone significantly (p<O.05) diminished sperm motility and livobi/ity. Spermatozoal motility at the control samples were similar 10 motility in the spermatozoa treated with low level ofestrogen. but sperm livability was highest with low level of estrogen (3oo ug/ml). The high estrogen level markedly diminished survival of spermatozoa during preservation.

Summary in Arabic.

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