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. 2024 Jun 29;14(13):1922. doi: 10.3390/ani14131922

Table 1.

Cumulus–oocyte complexes (COCs) collected by ovum pick-up in Romosinuano (RM) and Tropical Milking (TM) cows in three seasons in Veracruz, Mexico.

Variable Season
Breed Hot Dry Hot Humid Fresh Dry Global
Total COCs
RM 29.6 ± 2.6 a 22.6 ± 1.7 b 29.1 ± 2.3 a 26.9 ± 1.3
TM 18.9 ± 2.0 b 28.4 ± 2.2 a 26.6 ± 2.1 a 24.2 ± 1.3
Global 23.6 ± 1.5 25.4 ± 1.4 27.8 ± 1.6
Viable
RM 17.3 ± 2.1 a 12.8 ± 1.3 b 18.7 ± 1.9 a 16.1 ± 1.0 A
TM 13.7 ± 1.8 ab 17.4 ± 1.8 a 8.0 ± 1.0 c 12.4 ± 0.9 B
Global 15.4 ± 1.2 14.9 ± 1.1 12.2 ± 1.0
Unviable
RM 1.7 ± 0.6 b 1.7 ± 0.5 b 1.8 ± 0.5 b 1.8 ± 0.3
TM 0.4 ± 0.3 a 3.0 ± 0.8 b 1.5 ± 0.5 b 1.2 ± 0.3
Global 0.9 ± 0.3 Z 2.3 ± 0.4 XY 1.7 ± 0.4 YZ
Denuded
RM 9.4 ± 1.4 b 7.5 ± 1.0 b 8.3 ± 1.1 b 8.4 ± 0.7
TM 4.2 ± 0.8 a 6.0 ± 1.0 ab 17.1 ± 2.2 c 9.6 ± 0.7
Global 6.3 ± 0.7 X 6.7 ± 0.7 X 11.9 ± 1.1 Y
Total matured in vitro
RM 27.8 ± 2.7 a 24.6 ± 2.0 a 22.9 ± 2.1 a 25.0 ± 1.3 A
TM 13.3 ± 1.5 c 16.7 ± 1.5 bc 20.0 ± 1.8 ab 16.5 ± 1.0 B
Global 19.3 ± 1.3 20.3 ± 1.2 21.4 ± 1.4

A,B Different literal per row indicates statistical difference (p ≤ 0.01). X,Y,Z Different literal per column indicates statistical difference (p ≤ 0.006). a,b,c Different literal per column for season and row for breed indicates statistical difference (p ≤ 0.01).