Oscar, like the colleagues suggest, the best method is the natural one. You should use a mature male that is not castrated that produces abundant salivation (there the ferohomonas are) that are those in charge of stimulating the entrance of zeal in the females.
The male should remain in the morning as minimum 15 minutes and in the afternoon with the females, always an operative's low surveillance. This person should also stimulate the female by means of a soft massage in the vulva, to rub him the flanks with the knees and to exercise pressure in the loin all this in presence of the male.
Another form if one doesn't have male, it could be to mix sows, of similar size and age, or to change them place, another form that I have been able to witness it is although curious, effective and it is to go up them a truck or van and to go for them a walk.
Another form is to restrict them the food for one day or two, for then sumistrarselo for two days and then to remove it again.
The last option is the pharmacological one, you puden to use products like the Prostaglandinas or a product of laboratories denominated intervet Pg600. |
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