CORRELATION BETWEEN HYPO-OSMOTIC SWELLING TEST (HOST) WITH VARIOUS PHYSICO- MORPHOLOGICAL SEMEN CHARACTERS IN SAHIWAL AND RED SINDHI BULL SEMEN

摘要

Sixty semen ejaculates often mature bulls i.e. five each of Sahiwal (SW) and Red Sindhi (RS) bulls were collected at weekly interval to study the seminal characteristics, with hypo-osmotic swelling test (HOST) and their interrelationships. The mean percentages of progressively motile sperm, live sperm, morphologically abnormal sperm and HOST positive spermatozoa were recorded for both breed. The mean sperm positive to HOS test was almost 79% in the semen of both breed. Statistical analysis revealed significant (P<0.05) positive correlation between progressive motility, morphologically normal spermatozoa, sperm viability and percentage of HOST positive spermatozoa for both breed. Observations concluded that HOS test could be an important and practical means for routine evaluation of semen for artificial insemination.