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Colorado Agriscience Curriculum

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Colorado Agriscience Curriculum Animal Science Unit 4 Reproduction and Genetics Lesson 6 Heat Detection What is heat? What is standing heat? Heat Signals the ... – PowerPoint PPT presentation

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Title: Colorado Agriscience Curriculum


1
Colorado Agriscience Curriculum
  • Animal Science
  • Unit 4 Reproduction and Genetics
  • Lesson 6
  • Heat Detection

2
What is heat?What is standing heat?
(Unit 4 Reproduction and Genetics, Lesson 6 Heat
Detection T.M.A)
  • Heat Signals the time of ovulation and
    determines proper timing of insemination.
  • Standing Heat Best indication of estrus. It is
    when the female stands still when mounted by a
    male or another female. Do not breed a female
    you think is in estrus until you actually see her
    ridden while she stands completely still. If she
    is the one riding it is not an indication of
    standing heat.

3
Secondary signs of heat
(Unit 4 Reproduction and Genetics, Lesson 6 Heat
Detection T.M.B)
  • Cattle Cows are checked for estrus twice daily,
    in the morning and evening. Secondary signs
    include restlessness, attempting to mount other
    cows, and a clear, mucous discharge from the
    vagina. Do not breed a cow until you actually
    see standing heat, though. Secondary signs may
    just be leading up to estrus.
  • Swine Gilts and sows secondary signs of heat
    include a red, swollen vulva, odd sounds and odd
    odors.

4
Signs of Standing Heat
(Unit 4 Reproduction and Genetics, Lesson 6 Heat
Detection T.M.C)
  • Cattle Standing heat is exactly what it sounds
    like it is in cattle. The cow stands to be
    ridden by another cow in the herd, or if
    naturally bred, the cow stands to be ridden by a
    bull.
  • Swine Gilts and sows in standing heat assume a
    rigid stance with ears erect when hands are
    placed firmly on their backs.

5
Common Heat Detection Aids
(Unit 4 Reproduction and Genetics, Lesson 6 Heat
Detection T.M.D)
  • Cattle
  • Chin Ball Marker This device is worn beneath
    the detector animals chin, consists of a dye
    reservoir with a steel ball valve attached with
    a strong leather halter. Leaves a giant mark
    on the ridden cows back and rump.
  • Androgenized cows Females used to detect heat
    that have
  • been injected with testosterone to
    stimulate them into exhibiting male-like
    behavior.
  • Kamar This plastic device is glued to the
    tailhead of cows
  • eligible for breeding. Prolonged
    pressure from the mounting
  • animal turns the white detector red.

6
When to inseminate livestock after observation of
standing heat
(Unit 4 Reproduction and Genetics, Lesson 6 Heat
Detection T.M.E)
  • Cattle 12 hours after standing heat. So a cow
    found in standing heat in the morning should be
    inseminated in the evening of the same day.
  • Sows Insemination is recommended at the end of
    the first day and at the beginning of the second
    day of estrus.
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