Veterinary Andrology and Reproductive Techniques

TRAINING PROCEDURE

• The suitable time for training is early morning hour when the bulls have light stomach.
• The animals will also be active after overnight rest and the flies and musquitos will be less in morning hours.
• During winter seasons the training may be carried out between 9-10 AM.
• The young bulls can be prepared as for the adults bulls before starting of training.
• The bulls may be made familiar well in advance to the training/collection yard.
• It is desirable to start the training initially with the anoestrus female.
• The female teaser should be free of diseases and should not be too large or too small when compared to the bull
• The dummy should be secured well in a crate.
• The dummy should be controlled well because some dummies may kick while mounting by the young bull. This will have negative impact on the training bulls.

The dummies should be secured properly before allowing the young bull (trainee) for mounting. If a trainee bull gets negative experience during training for semen collection, it will be psycologically affected and will refuse to donate the semen.

• Initially the young bulls should be brought to the training/collection area in groups. In the beginning they will feel nervous.
• The young bulls are timid and they will not donate semen easily.
• They will be allowed to watch the mounting by other bulls from a distance to stimulate the training bulls.

Watching of other bulls mounting will stimulate the young bull sexually.

• After few days they will develop sexual desire and start nuzzling and licking the perineal and vulval region of teaser/dummy.
• Once these sexual activities start now the training should be given individually but not in groups.
• One bull should be allowed to approach the teaser/dummy, the other bulls should be kept away nearby from where they can watch the bull and teaser.
• Once the bull is ready to ride, kind words and whistling should be given which will intensify the sexual desire. As the whole process will take time the operator should be patient.
• In the beginning the penis will not protrude out of prepuce.
• With repeated attempts the penis will come out of sheath and the man experienced in semen collection by grasping the sheath should divert the penis into artificial vagina.
• The action of semen collector plays major role in shaping the sex libido of the bull.
• Some bull will have some preference over some dummies, some colors and they should be noted and harnessed to for the maximum semen collection.
• The proper temperature of artificial vagina (42-45⁰C) and pressure is also important.
• When the training is started, the semen is collected once in two days and should be evaluated for its quality.
• After six consequent ejaculations and testing for quality of semen they may be placed in regular collection schedule.
• Initially one ejaculate is collected in regular schedule for 3-6 months.
• Later two ejaculates will be collected in one day. From one adult bull two collections will be made in a week.

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