EFFECTS OF VARIOUS TREATMENTS WITH 6-METHYL-17-ACETOXYPROGESTERONE (MAP) ON SUBSEQUENT FERTILITY IN EWES

in Reproduction

Summary.

A higher proportion of ewes lambed to the first service (P<0·01) when put to the ram at the second heat after treatment with map (123/162, 75·9%) than when mated at the first heat after treatment (89/158, 56·3%). A 60 mg daily dosage of map resulted in 13% more ewes lambing to the first service than did a 50 mg dosage rate (73·1% versus 59·8%, P>0·05). There was no significant difference in fertility subsequent to map treatment for 12 versus 14 days.

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     An official journal of

    Society for Reproduction and Fertility

 

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