This second part on AI stud management reviews the procedure for calculating sperm concentration and the elements that affect a correct assessment.
The impact of semen used for post-cervical AI is 2-3 times bigger than that used to produce cervical insemination doses; therefore, preparation of the doses should follow an even stricter control program.
Boar exposure time, duration and frequency, proper boar: gilt or sow ratio, exposure methods, hormones, …
We recommend that producers pay more attention to gilts and sows that are at risk of increasing NPD. Situations of increased risk are described.
Production of a minimum number of doses to maintain profitability and the increase in post-cervical insemination leads to an increase of the doses produced per boar and, therefore, their share of responsibility in the production process.
The shorter and lower dose regime saves money but there is an increased risk of follicular cyst development, which may occur at doses below 13mg/day.
Introduction of post-cervical insemination has a very significant economic impact on the whole of the pork industry, and is a challenge of parallel magnitude to that raised by the transition from natural service to artificial insemination.