Open AccessEvaluation of postthaw sperm parameters and fertility of Cholistani service bulls
Author(s) -
Umer Farooq,
S. A. Mahmood,
Ijaz Ahmad,
Nazir Ahmad,
Musadiq İdris,
Muhammad Tariq ABBAS
Publication year - 2015
Publication title -
turkish journal of veterinary and animal sciences
Language(s) - English
Resource type - Journals
eISSN - 1303-6181
pISSN - 1300-0128
DOI - 10.3906/vet-1502-27
Subject(s) - fertility , semen , biology , insemination , sperm , zoology , artificial insemination , pregnancy , medicine , population , botany , anatomy , genetics , environmental health
The present study was conducted with the objective of evaluating Cholistani service bulls on the basis of their postthaw sperm parameters and fertilizing potential through artificial insemination under the prevailing local climate. Semen from each experimental bull (n = 6) was collected at weekly intervals over a 12-month period, frozen, thawed, and evaluated for postthaw sperm parameters. Fertility rate of postthaw samples was determined by inseminating 1200 Cholistani cows in 2 trials: Trial 1 had 600 cows with 100 inseminations per bull to assess the effect of individual bulls and Trial 2 had 600 inseminations with 150 insemination doses frozen per season to assess effect of seasons. The results revealed a significant effect (P 0.05).
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