Unlike pregnancy (a cow is pregnant or she’s notpregnant), estrus has an intensity level. Thus, estrous intensity influencesfertility. Similarly, estrous expression and its intensity affects the successof artificial insemination (AI) and embryo transfer (ET)...
There are several reproductive technologies that enable livestock breeders to produce more high-quality off spring and/or extend the genetics of valuable animals. Artificial insemination, frozen semen, embryo transfer, etc. have become relatively commonplace among seed stock breeders. Currently there are more innovations coming on the scene, to improve the success rates with these techniques...
“I want to catch all my cows in a natural heat, know the precise onset of each heat and exactly when to breed them. That’s all I want! Am I asking too much?”
Signed: Wants It All Dairy Guy
“Not at all! MPTI® gives you all that and more. MPTI® will turn your reproductive effort into reproductive genius!”
Signed: The Expert
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Fun question Curious Breeder. And the answer is field work versus lab work!
When doing a BSE (breeding soundness exam) your veterinarian must examine the sperm in a microscope in conditions that are less than ideal. And generally he/she is just looking for a pass or fail criteria.
We go 3 steps beyond the field. We bring the samples into our laboratory then assess motility using a computer assisted sperm analyzer – a fancy name for a machine that tells us so much more than a visual motility. We also analyze for those factors that can’t be seen visually…the DNA, the membrane, the acrosome and the fluidity of the membrane. We can’t see these things but they all impact fertility!
And you know, if we identify a problem, there are steps that you might be able to take to improve fertility!
Well, Ms. Mind the answer is a little harsh. Animals in the wild obviously don’t have the benefit of veterinarian care and they are also naturally selected for reproductive ease. A female that doesn’t have reproductive fitness in the wild doesn’t pass on her genetics. Thus, only animals that can reproduce with ease will contribute to the next generation resulting in a population of fit animals. Depending on the species you are referencing, many have evolved mechanisms that increases the likelihood of producing offspring such as multiple rounds of the estrus cycle during the breeding season allowing them mating opportunities with a variety of different males. The problem we see in our domestics is that we take away the natural selection and traits of interest become our focus. This is not true for all domestic animals but dogs and horses are a great example of this.