Table 2. Effects of heat stress on the
in vitro
maturation of Holstein and Jersey oocytes
Breed
Temperature
No. of GV oocytes
No. of oocytes with the 1st PB (%)
Holstein
38.5°C
78
69 (88.4)
40.5°C
80
62 (77.5)
Jersey
38.5°C
59
52 (88.1)
40.5°C
64
53 (82.8)
Fisher’s exact with correction
p
= 0.0521 (Holstein) 0.2823 (Jersey).
GV, germinal vesicle; PB, polar body.