Study of nuclear and acrosomal sperm morphometry in ram using a computer-assisted sperm morphometry analysis...

Area of Science:

• Reproductive biology
• Veterinary science
• Microscopy

Background:

• Accurate morphometric assessment of sperm is crucial for reproductive efficiency in livestock.
• Existing methods for sperm analysis can be time-consuming or lack precision in evaluating specific sperm components.

Purpose of the Study:

• To develop and validate a novel, cost-effective method for detailed sperm morphometry in rams.
• To assess the sperm nucleus, acrosome, and overall head morphology simultaneously.

Main Methods:

• Development of the computer-assisted sperm morphometry analysis fluorescence (CASMA-F) method using propidium iodide-pisum sativum agglutinin (PI/PSA) staining.
• Image acquisition and analysis of ram sperm using ImageJ software.
• Comparative analysis of CASMA-F with conventional staining methods (Hoechst 33342 and Hemacolor with ISAS software).

Main Results:

• The CASMA-F method demonstrated high precision in differentiating, capturing, and analyzing sperm nuclei, acrosomes, and whole heads.
• CASMA-F results were comparable to those obtained with Hoechst 33342 staining.
• While CASMA-F indicated larger sperm dimensions compared to the Hemacolor method, results were well-correlated.

Conclusions:

• The developed CASMA-F method provides a precise and simultaneous morphometric assessment of the ram sperm nucleus and acrosome.
• This fluorescence-based technique offers a valuable alternative for evaluating sperm quality in rams.