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The Signs of Oestrus
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| Pro-oestrus (When Training, tick off) |
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In gilts, the vulva swells, but this is not consistent in the sow. |
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The vulva becomes congested or red. |
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The udder develops in gilts. |
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The female becomes nervous and easily disturbed. |
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She is ridden by other sows, but does not stand. |
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Vaginal walls become reddened (congested). |
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Clitoris becomes more prominent. |
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Vaginal fluids thicken, produce strands between fingers. |
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| Oestrus |
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The vulva reddening starts to subside |
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There is a slight mucus vulva discharge |
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The female becomes more active |
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The female starts to mount other sows, and if mounted starts to stand |
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Emits a characteristic high-pitched grunt |
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She actively seeks boars |
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Has a decreased appetite |
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Stands to back pressure, particularly in the presence of a boar |
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In a Large White (Yorkshire) she pricks her ears |
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Rub marks evident on skin |
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Has a clean vulva in outdoor units (post service) |
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Rubs and is attracted to stockpeople |
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Allows coitus |
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