Corpus luteum function and pregnancy outcome in buffaloes during the transition period from breeding to non-breeding season

Russo, M., Vecchio, D., Neglia, G., Pacelli, C., Prandi, A., Gasparrini, B., Zicarelli, L., D'Occhio, M. J. and Campanile, G. (2010) Corpus luteum function and pregnancy outcome in buffaloes during the transition period from breeding to non-breeding season. Reproduction In Domestic Animals, 45 6: 988-991. doi:10.1111/j.1439-0531.2009.01472.x

Author Russo, M.
Vecchio, D.
Neglia, G.
Pacelli, C.
Prandi, A.
Gasparrini, B.
Zicarelli, L.
D'Occhio, M. J.
Campanile, G.
Title Corpus luteum function and pregnancy outcome in buffaloes during the transition period from breeding to non-breeding season
Journal name Reproduction In Domestic Animals   Check publisher's open access policy
ISSN 0936-6768
Publication date 2010-12
Year available 2009
Sub-type Article (original research)
DOI 10.1111/j.1439-0531.2009.01472.x
Volume 45
Issue 6
Start page 988
End page 991
Total pages 4
Editor Heriberto Rodriguez-Martinez
Place of publication Berlin, Germany
Publisher Wiley-Blackwell Verlag GmbH
Collection year 2011
Language eng
Subject 070206 Animal Reproduction
830305 Game Livestock (e.g. Kangaroos, Wallabies, Camels, Buffaloes, Possums)
Abstract The aim in this study was to investigate corpus luteum function and embryonic loss in buffaloes mated by artificial inseminations (AI) during the transitional period from breeding to non-breeding season. The study was carried out using 288 multiparous Italian Mediterranean Buffalo cows at 110 ± 4 days in milk. The buffaloes were mated by AI after synchronization of ovulation by the Ovsynch-TAI protocol 25 days after AI buffaloes underwent trans-rectal ultrasonography to assess embryonic development. Pregnancy diagnosis was confirmed on Days 45 and 70 after AI by rectal palpation. Buffaloes pregnant on Day 25 but not on Day 45 were considered to have undergone late embryonic mortality (LEM), whilst buffaloes pregnant on Day 45 but not on Day 70 were considered to have undergone foetal mortality (FM). Corpus luteum size and blood flow were determined by real-time B-mode/colour-Doppler on day 10 after AI in 122 buffaloes. The resistive index (RI) and pulsatility index (PI) were recorded at the time. Milk samples were collected on Days 10, 20 and 25 after AI in all inseminated buffaloes for the assay of whey P4 concentrations. Data were analysed by anova. Pregnancy rate on Day 25 after AI was 48.6% (140/288) and declined to 35.4% (102/288) and 30.6% (88/288) by Day 45 and Day 70 respectively. The incidences of LEM and FM were respectively 27.1% (38/140) and 13.7% (14/102). Pregnant buffaloes had greater (p < 0.01) whey concentrations of P4 from Day 20 onwards than buffaloes which showed LEM, whilst P4 in buffaloes that showed FM did not differ from the other two groups on Day 10 and Day 20. Corpus luteum blood flow on Day 10 after AI showed higher RI (p < 0.05) and PI (p = 0.07) values in buffaloes that subsequently were not pregnant on Day 25 compared with pregnant buffaloes. Buffaloes that were not pregnant on Day 45 also had a higher (p = 0.02) RI value on Day 10 than pregnant buffaloes, whilst PI values on Day 10 did not differ for the two groups of buffaloes. It was concluded that blood flow to the corpus luteum on Day 10 after AI influences corpus luteum function as judged by P4 secretion and also embryonic development and attachment in buffaloes. © 2009 Blackwell Verlag GmbH.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 18 MAY 2009

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 29 Apr 2010, 10:51:26 EST by Keryn Eaton on behalf of School of Animal Studies