Case 2A; sperm
4 important questions on Case 2A; sperm
What is an oestrous cycle?
- 4 phases:
1. Prooestrus
2. Oestrus
3. Metoestrus
4. Dioestrus
When is puberty complete in males and females?
- Female: the first ovulation associated with externally visible estrous symptoms and typical estrous behaviour
With regard to the development of embryos into new individuals, there are 3 types of animals that can be distinguised
2. Oviparous
3. Ovoviviparous
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What can you tell me about the birth process in viviparous (mammels)
- problems can arise (case of cow and ewe) like the wrong position of the foetus or a too high birthweight in relation to the pelvic dimensions of the mother
- calves and lambs come head first, with the head lying on the forwardly stretched front legs
- piglets can be born head first or tail first
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