Pre-Seed EQ - Demand the Best in Science & Quality for Your Breeding Programs
 
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Pre~SeedEQ ~ Veterinarian Overview

Clinically proven in independent studies to not harm sperm from the time of collection, through 48 hours of cold storage.

Based on the same patented, isotonic formula as the only lubricant indicated by FDA for use during human fertility procedures.

With the plant polysaccharide arabinogalactan, for antioxidant support.

Pre~Seed EQ is uniquely formulated to provide lubrication, while optimizing sperm function: 

The ONLY lubricant to not decrease stallion sperm motility during either fresh or cold storage in independent studies.
 
Does not interfere with the ability of sperm to fertilize eggs, or support subsequent embryo development, even after exposure to high concentrations of 50% (v/v).
 
Developed by a DVM, PhD, Theriogenologist with over 15 years of federal funding in sperm physiology.
 
Does not cause mucous membrane irritation, as does KY Jelly®, making it a better choice for sensitive mares and stallions, or for any medical procedure requiring mucosal lubrication.
 
An excellent sheath cleaner, with a little going a long way, and no rinsing required.
 
Isotonic, non-irritating formula makes it excellent for wound cleaning and dressing. 
 

How Do Other Lubricants Harm Sperm?

Most lubricants damage sperm, as shown in numerous studies, and should be avoided for optimal sperm quality and outcomes.
 
Zero percent fertilization or embryo development after exposure to 10% Priority Care in a bovine in vitro fertilization model.
 
A motile sperm decline of over 30% within 3 hrs of contact to "non-spermicidal" veterinary lubricants in a fresh storage setting, as well as over the 48 hrs of routine cold storage.

Although the loss of sperm motility after contact with lubricants is widely reported, it is just now being understood that this abnormal sperm motility is, more importantly, associated with decrease in the sperm’s ability to fertilize an egg and support normal embryo development.

Specifically, Wright (2007) found that exposure of sperm to hyperosmotic lubricants and gels, such as Aquasonic Ultrasound Gel®, KY®, or Priority Care® decreased fertilization potential of bull sperm by 60-100%. 

Also Meyers (2007), has reported that hyperosmotic conditions cause cytoskeleton reorganization in sperm, leading to sublethal motility and morphology defects associated with damaged fertilization potential. 

Other lubricants cause damage to sperm on contact due to non-physiologic characteristics such as:

pH - The window for optimal stallion sperm function is narrower than for other species, being between 7.2 and 7.8,  with a rapid decline in motility seen for pH levels above 8.0. Most lubricants have pH values below this optimal level. Sperm motility losses occur with acidic pH exposure.  Conversely, pH levels above 8.0 can cause sperm to undergo acrosome loss and death. In order to protect sperm from pH changes, lubricant pH must be stable during contact with air during handling.  This requires a buffer, such as the phosphate buffers used in Pre~Seed EQ.  Products that utilize sodium bicarbonate as a buffer (e.g. MiniLube) may cause sperm damage through pH increases to alkaline levels (outside of a CO2 incubator).   This may be why sperm motility declines have been reported with 10%  concentrations of Minilube® (Samper, 2007).

Osmolarity -> Sperm are also sensitive to both high and low osmolarity which causes them to either shrink or swell beyond their "critical volume limits".  A physiologic osmolarity of around 320 mOsm/kg (that of semen) is best for sperm function.  Stallion sperm motility decreases linearly with exposure to increasing osmolarity above 400 mOsmo, such that sperm motion disappears at 600 mOsm or greater. The use of Priority Care® as a lubricant in an artificial vagina, for example, can cause equine sperm in the ejaculate to be rapidly and suddenly exposed to osmolalities as high as 800 mOsm. Both human and animal model studies suggest that this level of osmotic shock is sufficient to cause irreversible damage to sperm, even if the sperm are moved back into an isotonic situation.

Ionic Concentration - Some veterinary lubricants (EquiLube® & Priority Care®) are formulated with glycols (such as propylene glycol) which permeate across sperm membranes into the sperm cell, and impact cell function.  Although most lubricants with propylene glycol are hyperosmotic, EquiLube’s osmolarity is close to physiologic.  However, sperm motility still declined during contact with Equilube® in both fresh and cooled sperm storage (Samper, 2007).  This may have been due to the osmotic pressure coming from propylene glycol molecules, rather than ionically balanced salts, as in Pre~Seed EQ

pH, Osmolality Levels for Veterinary “Non-Spermicidal” Lubricants
 

Product

pH

Osmolality (mOsm/kg)

# from glycols

 

Too

low

Physiologic 7.1 – 7.4

Too

high

Physiologic 270 - 365

Too

high

Equilube®

 

7.0

 

 

368#

 

KY® Jelly

4.5

 

 

 

2052

Minilube®

 

 

8.0**

312

 

Pre~SeedEQ

 

7.3

 

324

 

Priority Care®

6.0

 

 

 

2199#

Mineral Oil

 

 

10.5

 

1200

#Osmotic pressure mostly from Propylene Glycol, not salts 
**Buffered by sodium bicarbonate only

Some people have suggested that mineral oil is appropriate for lubricating devices in the breeding shed; however, the pH and osmolality are not physiologic, and studies have shown decreased ability of sperm to penetrate ova in laboratory studies after mineral oil exposure.

What makes Pre~Seed EQ Unique

Pre~Seed EQ is the only lubricant formulated with:
  A physiologic osmolality and ion concentration;
  A buffer to ensure that pH remains stable; and
  An antioxidant to protect sperm from free radical damage during handling.

Pre-Seed EQ's Patented Ingredients Include:

  Purified water: Very pure with very low bioburden.
 
  Hydroxyethylcellulose: A non-toxic thickener. Has been shown to be similar to cervical mucus in laboratory studies.
 
  Pluronic: A non-toxic slippery agent.
 
 

Sodium chloride: Makes the product isotonic to semen.
 

  Arabinogalactan: A unique plant polysaccharide, that provides antioxidant support to protect sperm.
 
  Sodium phosphate & Potassium phosphate: Protects, buffers and holds the pH to that of semen for an optimal sperm environment.
 
  Carbomer: A non-toxic thickner.
 
  Methylparaben: One of the most mild and well studied of all preservatives against bacterial growth. Parabens in the concentrations we use have no adverse effect on sperm or reproduction.
 
  Sodium hydroxide: Raises the pH to that of semen and fertile cervical mucus.

 

 

Pre-Seed EQ’s Lot Release Testing  Each Lot is tested before release to ensure the following:

pH Between 7.1-7.4
Osmolality 260- 330 mOsmo/kg
Viscosity Between 11,000 – 15,000 cps
Sperm motility Sperm retain 80% or more of motility in control medium (w/o Pre~Seed)
Microbial count 0 cfu/ml pathogenic bacteria, others < 100 cfu/ml

Compare Pre~Seed EQ to Other "Non-Spermicidal" Lubricants



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Sheath Cleaning with Pre~Seed EQ

Sheath Cleaning with
Pre~Seed
EQ

 

 

 

 
 

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