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dc.creatorSbiraki, A. P.en
dc.creatorSaoulidis, K.en
dc.creatorKyriakis, S. C.en
dc.creatorSaratsis, P.en
dc.creatorAlexopoulos, C.en
dc.creatorFthenakis, G. C.en
dc.date.accessioned2015-11-23T10:47:05Z
dc.date.available2015-11-23T10:47:05Z
dc.date.issued2003
dc.identifier.issn1537209X
dc.identifier.urihttp://hdl.handle.net/11615/32924
dc.description.abstractObjectives: To investigate the effects of in-feed chlortetracycline (CTC) during lactation on health status and reproductive performance of gilts or sows in a herd with a history of porcine reproductive and respiratory syndrome; to evaluate health status and performance of the piglets born to these females; and to investigate health status and reproductive performance of the same sows during the subsequent lactation period, when no in-feed CTC was administered. Methods: Two groups of 200 gilts or sows were monitored for two consecutive breeding cycles (phases). During Phase 1, the CTC+ group received CTC in the feed (10 g per animal daily) from 5 days before farrowing until the first service after weaning. The CTC- group received non-medicated feed. During Phase 2, both groups received non-medicated feed. Results: Rates of occurrence of poor appetite and vaginal discharges were lower for the CTC+ group during both phases, and rates of occurrence of clinical mastitis, anestrus, and returns-to-estrus were lower for CTC+ sows in Phase 1. The CTC+ sows lost less body weight during lactation, had a shorter wean-to-first estrus interval in Phase 1, and had a shorter interval between Phases 1 and Phase 2 farrowing dates. More piglets were weaned from CTC+ sows, and the piglets had lower mean throughout-lactation diarrhea scores in both phases and heavier weaning weights in Phase 1. Implications: In-feed administration of CTC during lactation improved health and performance of sows and their piglets. The beneficial effects continued during the subsequent lactation, when no CTC was administered.en
dc.source.urihttp://www.scopus.com/inward/record.url?eid=2-s2.0-0038406418&partnerID=40&md5=122629c3ecf721b1116da0c5771a3acd
dc.subjectChlortetracyclineen
dc.subjectReproductive performanceen
dc.subjectSowen
dc.subjectSwineen
dc.subjectAnimaliaen
dc.subjectSuidaeen
dc.subjectSus scrofaen
dc.titleEffects of chlortetracycline administration on the health status and performance of sows: Results of a field trialen
dc.typejournalArticleen


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