Abstract:Prostaglandin analogue (ICI 8o 99 6) was administered ( 100 tig IM) on day 10 or I of the oestrous cycle in 8 Romanov (R), 10 Romanov X Prealpes (R X P), 8 Prealpes (P), 8 Ile-de-Fvance (IF)ewes. Ovulation rate before treatment was 2 . 9 (R), 2 . 9 (R X P), 1 . 7 (P) and 1 . 5 (IF). The mean ovulation rate in the induced cycle was not significantly different from that in the cycle before treatment (R = 2 . 7 ; R X P = 2 . 4 ; P = z.o ; IF = 1 .6). Delay (hr) between PG injection and onset of oestrus was sig… Show more
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