From: Clays as dietary supplements for swine: A review
Items
Control
Zeolite
Return to estrus
14.1
10.3
Farrowing rate
78.7
86.2
Inappetence
40.8
35.1
Pyrexia
29.1
26.1
Mastitis
17.5
14.4
Vaginal discharge
6.8
8.1