Table 2. Conception rate according to corpus luteum size, coexistent follicle size, and embryo transfer method (n = 96)

Group1)	E2/P4		2FTET		J-synch		No. of pregnant cow/total	Pregnancy rates (%)
	No. of cow	%	No. of cow	%	No. of cow	%
Only CL	-2)	-	1/5	20.0	1/2	50.0	2/7	28.6
CL+MF	-2)	-	1/1	100.0	0/2	0.0	1/3	33.3
CL+LF3)	4/72)	57.1	21/56	37.5	12/23	52.2	37/86	43.0
Total	4/72)	57.1	23/62	37.1	13/27	48.1	40/96	41.7

Only CL, only the corpus luteum is present in the left or right ovary; CL + MF, medium (5–10 mm) coexistent follicle with corpus luteum; CL + LF, large (> 10 mm) coexistent follicle with corpus luteum.
A total of 28 cows were vaccinated against foot-and-mouth disease three days after the embryo transfer and were therefore excluded from the experiment.
A total of 21 cows belonging to the large follicle and X groups did not undergo embryo transfer.
E2/P4, estradiol/progesterone; FTET, fixed-time embryo transfer.