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Disadvantages

 Semen may not be available when needed

 It is only carried out by qualified inseminator

 Some farmers are not able to detect heat in cows

 Some animals have silent heat periods

 Storage of semen is difficult

Heat periods

It is a period when a female animal is ready and desires to ma-

te with a male animal and result into pregnancy

Signs of heat in female animals (cows)

 A cow mounts other cows

 The cow allows other cows

 The cow loses appetite to graze

 The vulva swells and changes colours

 There is mucus discharge from the vulva

 The cow makes a lot of noise

 The cow urinates frequently

 The cow allows the bull to mount it without resisting

 Lactating cows reduce milk production

 The cow become restless

Fertilization in cows

Fertilization is the union (fusion) of the nuclei of male and fe-

male gametes to form a zygote.