If your AI tech arrives at the same time every day then there will always be some cows that will be inseminated outside the ideal time frame shown in the graphic below.

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It is always better to inseminate early rather than late as you can always inseminate again the next day if required.

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A particular focus of your heat detection prior to the AI tech arriving is to spot those cows that are coming in to heat.

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The decision making on whether or not to inseminate is as easy as

1

2

3

 

1- Is the cow showing signs of heat.

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2 - Yes.

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3- Inseminate when the AI tech turns up.