4-Boar Management Flashcards
◼Boars should be purchased at least ____ weeks before the breeding season starts.
6 - 8 weeks
◼Before commercial breeding, boars have to be examined for its ____ (4)
libido, ability to mount, ability for erection and sperm quality.
Temperature stress begins to exert its influence at
____ *C
26 - 27 *C
◼As a guide, a boar at 104 kg should have a back fat of ____ cm or less
2.5 cm
boars reach puberty at
110 to 147 days (about 5 months)
◼A boar to sow ratio of ____ is generally
recommended.
1:20-30
◼Some culled sows or finishing pigs may be placed in a small adjacent pen where good nosing or contact possibilities could be attained.
◼This practice should last ____ weeks.
3-4 weeks.
◼Revaccination is done every ____
thereafter or 2 times a year.
six months
◼In general, follow the recommended primary and
booster shots of vaccines to be given (e.g. ____ etc.). (common diseases)
Hog Cholera, FMD, Pseudorabies, Leptospirosis
what are the vitamins that Should always be given at least once a month
Vitamins A,D,E
◼Component processes of AI:
▪ Training of boars
▪ Collection of semen
▪ Evaluation of semen
▪ Processing and storage of the semen
This fraction contains fluid from the prostate gland and amounts to ~25 cc.
▪ This fraction serves to flush urine and bacteria out of the boar’s urethra, and is typically discolored and foul smelling.
Pre-sperm fraction.
This part is usually 40-100 cc and
may contain 80-90% of the total sperm.
Sperm-rich fraction.
Is the largest by volume (70-400
cc) and is typically sperm poor. 2/3 of this is often
discarded in order to prevent over dilution of the
sperm rich fraction.
Clear fluid fraction.
It is 20-40 cc in volume.
▪ During natural service, it functions to effectively seal the
ejaculate volume inside the female uterus.
Gelatinous phase-fraction.
