SBS CryoSystem Spectrum Freeze Test Kit

SBS Cryosystem Spectrum Test Freeze is a horse semen extender test kit that offers a variety of Spectrum freezing extenders to identify the best semen freezing extender and protocol for each stallion. The SBS Cyrosystem Freeze Test Kit contains the five Spectrum equine semen extenders in small quantities, plus centrifugation medium and CushionFluid for centrifugation. Spectrum extenders feature various cryoprotectants and specific egg yolk or milk content that combine to protect sperm cells from damage caused by freezing and protect the fertilizing ability of the semen after thawing. The freeze test kit contains all media needed to freeze split ejaculates and a comprehensive manual. Larger quantities of each of these extenders are available and sold separately.

Why is it important to have a range of freezing extenders available?
Unlike production livestock, stallions are generally not selected based on fertility testing. Within the breeding population exists high variability in the ability of sperm from individual stallions to survive cryopreservation. This is likely due to differences in the lipid composition of sperm membranes. Use of a single extender or freezing protocol for all stallions may result in less than optimum results for many stallions.

All Spectrum extenders are ready-to-use solutions. There is no need to source individual components or to add antibiotics. Use of a programmable freezer will yield more consistent results, however, vapor freezing or programmable freezer can be used.

Green:

• Milk-based
• Low in egg yolk
• Best combined with rapid cooling and freezing
• Beneficial for certain stallions only

Orange:

• Low in milk and egg yolk
• Complex formula
• Best combined with slow cooling and freezing

Red:

• No milk
• High egg yolk content
• Best combined with rapid cooling and freezing

Blue:

• Complex formula
• Low in milk and egg yolk
• Best combined with slow cooling and freezing
• The cryoprotectant is highly membrane permeable

Violet:

• Complex formula
• Low in milk. Contains egg yolk
• Best combined with slow cooling and freezing
• Contains a balanced combination of cryoprotectants

Each of the SBS Spectrum Equine Semen Freezing Extenders are pH and osmolarity balanced and clarified. Chemicals are reagent grade.