Effects of hormone treatment with feeding and management modification investigated by transrectal ovarian ultrasonography in anestrous pigs

A total of 152 sows and gilts were clinically diagnosed as anestrus and their ovaries were observed by transrectal ultrasonography. Abnormal ovaries were depicted in 66 animals (43.4%), and the remainder was normal. Feeding and management modification (adjustment of feed composition and volume with...

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Bibliographic Details
Published inJournal of the Japan Veterinary Medical Association Vol. 62; no. 2; pp. 126 - 131
Main Authors Hidaka, R.(Yamaguchi Univ. (Japan)), Hidaka, K, Sasakura, H, Kamimura, S
Format Journal Article
LanguageJapanese
Published Japan Veterinary Medical Association 20.02.2009
Subjects
anestrus
CERDO
CONTROL DE ENFERMEDADES
CONTROLE DE MALADIES
DISEASE CONTROL
eCG
ECHOGRAPHIE
ECHOGRAPHY
ECOGRAFIA
feeding management
FEEDING SYSTEMS
GnRH-A
HORMONAS
HORMONE
HORMONES
OVAIRE
OVARIES
OVARIOS
PORCIN
REPRODUCTIVE DISORDERS
SISTEMAS DE ALIMENTACION
SWINE
TECHNIQUE D'ALIMENTATION
transrectal ultrasonography
TRASTORNOS DE LA REPRODUCCION
TROUBLE DE LA REPRODUCTION
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Summary:A total of 152 sows and gilts were clinically diagnosed as anestrus and their ovaries were observed by transrectal ultrasonography. Abnormal ovaries were depicted in 66 animals (43.4%), and the remainder was normal. Feeding and management modification (adjustment of feed composition and volume with boar contact) was applied to 136 animals, except those with foot disease. In abnormal ovaries, eCG 1000IU was administered to ovarian quiescence (n = 48) and GnRH-A 200microg to multiple ovarian cysts (n = 2). Animals with normal ovarian findings (n = 73) and oligo ovarian cysts with corpora lutea (n = 13) were intact as control. As a result, the estrous return and conception ratio for the treated and control group were 96.0% vs. 98.8%, and 91.7% vs. 78.8%, respectively; (conception ratio: P0.05). Both groups showed high estrous returns; however the conception ratio was low for the control. These results suggest that factors other than ovaries were considered in the conception ratio.
Bibliography:L70
2009004316
ISSN:0446-6454
2186-0211
DOI:10.12935/jvma.62.126