Effect of a phytogenic feed additive on weaning-to-estrus interval and farrowing rate in sows
Robert K. Kis, PhD; Gabor Bilkei, DVM, PhD
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Primiparous and multiparous sows were supplemented during lactation and until the first standing estrus with oregano, chlor-tetracycline, or no supplement. Weaning-to-estrus interval was shorter in sows supplemented with oregano compared to other treatments, and farrowing rate was greater in sows supplemented with either chlortetracycline or oregano compared to untreated sows.
Keywords: oregano, weaning-to-estrus interval, farrowing rate, total born litter size
Cite as: Kis RK, Bilkei G. Effect of a phytogenic feed additive on weaning-to-estrus interval and farrowing rate in sows. J Swine Health Prod 2003;11(6):296-299.
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