(a)
• One bull may serve many cows thereby increasing usefulness of a bull.
• Prevents spread of breeding diseases rej. Diseases only.
• Possible to make use of a bull that cannot serve naturally due to injuries or too heavy.
• Reduces expenses to a farmer because does not have to own a bull.
• Easy to control inbreeding.
• Semen can be stored for a long time even after death of the bull.
• Easy to control breeding.
• Eliminates dangerous bulls from the farm.
• Useful research tool in studying large number of daughters from a single sire.
• Prevent large bull from injuring small cows
• Reduce expenses of keeping a bull on pasture veterinary bills.
(b) Restlessness
• Enlarged or swollen vulva
• Clear mucus discharge from the vulva
• Slackening of the pelvic muscles or the relaxing of hip muscles
• Full and distended udder
• Thick milky fluid comes out of teats
• Water bag appears and bursts, just before lambing
(c)
• They cause anaemia
• Deprive the host of food
• Cause injury / damage to body tissues
Dominic Onsase answered the question on March 5, 2018 at 14:56
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