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Table 7 Effect of age of eggs at fertilisation on the number of viable embryos [17]

From: A review of factors influencing litter size in Irish sows

Age of eggs at fertilisation (hours)

Percentage of eggs normally fertilised

Number of viable embryos at day 25

0

90.8

12.0

4

92.1

11.7

8

94.6

8.7

12

70.3

6.8

16

48.3

4.8

20

50.9

5.0