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dc.contributor.authorWilasinee Pirokaden_US
dc.contributor.authorChayanon Yadmaken_US
dc.contributor.authorPunnawut Yamaen_US
dc.contributor.authorJakree Jitjumnongen_US
dc.contributor.authorWarittha U-kriten_US
dc.contributor.authorWarunya Chaikolen_US
dc.contributor.authorMolarat Sangkateen_US
dc.contributor.authorNalinthip Promsaoen_US
dc.contributor.authorNapatsorn Monthaen_US
dc.contributor.authorPaiwan Sudwanen_US
dc.contributor.authorRaktham Mektriraten_US
dc.contributor.authorJulakorn Panatuken_US
dc.contributor.authorPayungsuk Intawichaen_US
dc.contributor.authorChompunut Lumsangkulen_US
dc.contributor.authorPin Chi Tangen_US
dc.contributor.authorTossapol Moonmaneeen_US
dc.description.abstractRelatively, little is known about the corpus luteum (CL) function in early pregnancy after the successful treatment of luteal phase deficiency in repeat-breeder dairy cows when exposed to extreme environments under tropical climate. To investigate the influence of increased tissues of corpora lutea (CLs) by inducing secondary CL based on progesterone (P4) concentration and fertility in repeat-breeder dairy cows undergoing the fixed-time artificial insemination (FTAI) protocol, 32 cows were treated with gonadotropin releasing hormone (GnRH) on day 5 post-induction (experiment 1). In experiment 2, 213 cows were bred using the short-term FTAI protocol. On day 5 post-FTAI, cows were divided into two groups: treatment with (GnRH5-treated group) or without (GnRH5-untreated group) GnRH. The temperature-humidity index ranged from 77.3 to 82.8. Cows bearing two CLs had greater P4 concentrations than cows bearing only one CL on their ovaries (P < 0.05). Pregnancy rates were greater in GnRH5-treated group than the GnRH5-untreated group (P < 0.01). Moreover, repeat-breeder cows bearing two CLs had a greater likelihood of pregnancy (odds ratio = 20.86) than cows bearing only one CL on their ovaries (P < 0.01). Under heat stress condition, the results highlighted that increasing luteal tissues by creating secondary CL leads to enhanced peripheral P4 concentrations and improved pregnancy outcomes in repeat-breeder dairy cows.en_US
dc.subjectAgricultural and Biological Sciencesen_US
dc.titleIncreased luteal tissues after secondary corpus luteum formation leads to enhanced progesterone concentrations and improved fertility in repeat-breeder dairy cows during heat stress condition in tropical climateen_US
article.title.sourcetitleTropical Animal Health and Productionen_US
article.volume54en_US of Phayaoen_US of Medicine, Chiang Mai Universityen_US Universityen_US Universityen_US Chung Hsing Universityen_US Mai Universityen_US Dairy Cooperative Ltd.en_US
Appears in Collections:CMUL: Journal Articles

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