Reproductive endocrine profiles and follicular growth after estrus induction in the riverine water buffalo (Bubalus bubalis, 2n=50) and riverine-swamp hybrid buffalo (2n = 49)

J. L. Zambrano-Varón, Robert Bondurant

Research output: Contribution to journalArticle

Abstract

Ten adult female water buffalo were used in the present study (5 × [2n = 50] and 5 × [2n= 49] hybrids). Ovarian activity was monitored daily by transrectal ultrasonography between two consecutive ovulations. Observed follicular wave numbers were: 1 (n=1), 2 (n=4), and 3 (n=5). The interovulatory interval ranged 17 to 23 days. Differences in mean follicular diameter between follicles of the normal karyotype (2n=50) and buffalo hybrids (2n=49) were found on the second subordinate group of follicles (P<0.05) but not between dominant and third subordinates. Differences in circulating concentrations of P4 and estradiol were not statistically significant (P>0.05), whereas inhibin profiles were significantly higher in the hybrid group (P<0.05). Understanding the biological meaning of the difference in inhibin concentrations in B. bubalis female reproductive performance will require further investigation.

Original languageEnglish (US)
Pages (from-to)622-625
Number of pages4
JournalItalian Journal of Animal Science
Volume6
Issue numberSUPPL. 2
DOIs
StatePublished - Dec 1 2007

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Keywords

  • Bubalus bubalis
  • Endocrine profile
  • Folliculogenesis
  • Ultrasound
  • Water buffalo

ASJC Scopus subject areas

  • Animal Science and Zoology

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