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Showing 1 to 5 of 5 for “"Bull semen"”.
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Comparative evaluation of different extenders of bull semen stored under different conditions
Preservation of semen is an important process to ensure that semen quality is sufficient for use in assisted reproductive technologies. This study evaluated the effectiveness of three different extenders to preserve bull semen stored under different conditions, as an alternative to frozen-thawed …
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Determination of the effects of caffeine C1, 3. 7- trimethylxanthine in Tris-based egg yolk extender and different incubation intervals on the quality of cryopreserved bull semen
… on quality parameters of cryopreserved bull semen. Semen samples were assessed for total motility, progressive motility, non-progressive motility, non-motile sperm cells, viability, acrosome integrity, and sperm cell morphological abnormalities using standard microscopic techniques. …
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The effect of tris aloe vera (barbadensis miller) gel on chilled and frozen-thawed bull spermatozoa quality
Semen extenders protect sperm from cold shock, osmotic stress, and alterations in membrane fluidity and permeability plus provide energy substrates for sperm metabolism. Egg yolk is one of the most common additives of animal origin that are used for semen preservation, however, it has become a …
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The effect of ACTH and progesterone on semen characteristics, blood hormones and testicular histology in the bull
… 1, one 7-yr-old and two yearling Holstein bulls were injected with 200 IU ACTH every 8 hr for 6 days. In Experiment 2, two groups of three yearling Holstein bulls each were injected daily with crystalline progesterone in propylene glycol (.84 mg/kg body wt) for 21 days. Semen …
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Maturation and Culture Media Effects on In Vitro Bovine Embryo Developmental Competence
… maturation for 24 hours, fertilization with bull semen for 24 hours, then embryo culture for 7-8 days in 38.5 °C in 5% O<sub>2</sub>, 5% CO<sub>2</sub> and 90% N<sub>2</sub>. A proportion of stage 7 grade 1 blastocysts were fixed and stained with Nile Red to evaluate lipid content, …