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WORKSHEET
Gestation and Parturtion
Topic # 3025
1. Describe the length of the estrous cycle and the breeding seasons for the mare, cow,
ewe, and sow:
Species
Length of estrous cycle
Breeding season
Mare
Cow
Ewe
Sow
2. Give the average gestation lengths in months and days for the following:
Species
Avg. gestation Length (days)
Cow
Mare
Sow
Ewe
Doe
3. Where does fertilization occur in the cow?
(months)
4. Name 3 methods for heat detection.
5. What is a "freemartin"?
6. Why are they usually sterile?
7. What should be done with most freemartin heifers?
8. Describe, in detail, the 3 main stages of parturition (do not include the rest period):
a.
b.
c.
9. Describe the proper fetal presentation of a calf:
10. What is dystocia?
11. Give 5 causes of dystocia: