From: Culling in served females and farrowed sows at consecutive parities in Spanish pig herds
Pigs born alive groups | |||
---|---|---|---|
8 or fewer | 9–15 | 16 or more | |
Herd groups | Culling risks (± SE), % | ||
Parity 2 | |||
High-performing herds | 12.6 (1.36)ax | 3.7 (0.39)y | 2.8 (0.38)y |
Ordinary herds | 7.0 (0.52)bx | 3.0 (0.21)y | 2.3 (0.30)y |
Parity 3 | |||
High-performing herds | 18.2 (1.87)ax | 5.2 (0.51)ay | 3.6 (0.42)z |
Ordinary herds | 9.4 (0.67)bx | 3.6 (0.23)by | 2.7 (0.31)y |
Parity 4 | |||
High-performing herds | 21.3 (2.38)ax | 6.8 (0.73)ay | 4.7 (0.56)z |
Ordinary herds | 12.3 (0.91)bx | 4.7 (0.32)by | 4.1 (0.41)y |
Parity 5 | |||
High-performing herds | 28.7 (3.06)ax | 10.0 (1.03)y | 6.6 (0.78)z |
Ordinary herds | 18.5 (1.26)bx | 7.4 (0.48)y | 6.3 (0.61)y |
Parity 6 | |||
High-performing herds | 36.1 (4.82)x | 19.9 (2.63)y | 12.7 (1.78)z |
Ordinary herds | 26.8 (2.14)x | 13.2 (1.04)y | 10.2 (1.00)z |