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dc.creatorVuković, Dejan
dc.creatorBožić, Aleksandar
dc.creatorRelić, Renata
dc.creatorStancić, Blagoje
dc.creatorGvozdić, Dragan
dc.creatorKučević, Denis
dc.date.accessioned2020-12-17T21:42:08Z
dc.date.available2020-12-17T21:42:08Z
dc.date.issued2016
dc.identifier.issn1300-0128
dc.identifier.urihttp://aspace.agrif.bg.ac.rs/handle/123456789/4150
dc.description.abstractAn experiment was conducted to investigate the effects of hormonal synchronization of ovulation on progesterone concentrations in milk and blood serum and on reproductive performance. Sixty Holstein-Friesian cows averaging 8000 L over 305 days of lactation were divided into 2 groups of 30 animals. One-factor ANOVA and a t-test of progesterone concentrations in venous serum and milk revealed that the lowest concentrations of progesterone in milk (Ovsynch 5.8 + 1.0 ng/mL; control 4.5 + 0.6 ng/mL) and blood serum (Ovsynch 1.3 +/- 0.9 ng/mL; control 1.4 +/- 0.5 ng/mL) in both groups were found on the day of estrus or artificial insemination (AI) (both P lt 0.05). Increases in the concentrations of progesterone in milk (Ovsynch 17.6 +/- 4.3 ng/mL; control 10.5 +/- 1.9 ng/mL) and blood serum (Ovsynch 3.6 +/- 1.1 ng/mL; control 4.0 +/- 1.0 ng/mL) were observed on day 7 after AI (both P lt 0.05). Concentrations of progesterone in milk and blood serum in nonpregnant cows were reduced on day 21 after AI. Assessment of reproductive performance revealed that the application of treatment shortened the duration of the service period (Ovsynch 76 days; control 83 days) and the calving interval (Ovsynch 376 days; control 382 days).en
dc.publisherScientific Technical Research Council Turkey-Tubitak, Ankara
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/31050/RS//
dc.rightsopenAccess
dc.sourceTurkish Journal of Veterinary & Animal Sciences
dc.subjectOvsynchen
dc.subjectsynchronization of estrusen
dc.subjectdairy cowsen
dc.subjectreproductive parametersen
dc.titleProgesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatmenten
dc.typearticle
dc.rights.licenseARR
dc.citation.epage80
dc.citation.issue1
dc.citation.other40(1): 75-80
dc.citation.rankM23
dc.citation.spage75
dc.citation.volume40
dc.identifier.doi10.3906/vet-1505-17
dc.identifier.fulltexthttp://aspace.agrif.bg.ac.rs/bitstream/id/2699/4147.pdf
dc.identifier.scopus2-s2.0-84953432671
dc.identifier.wos000368558800017
dc.type.versionpublishedVersion


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