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Follicular Dynamics and Oestrous Detection in Thai Postpartum Swamp Buffaloes (Bubalus bubalis)
Chulalongkorn University, Bangkok.
Chulalongkorn University, Bangkok.
Chulalongkorn University, Bangkok.
Chulalongkorn University, Bangkok.
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2011 (English)In: Reproduction in domestic animals, ISSN 0936-6768, E-ISSN 1439-0531, Vol. 46, no 1, e91-e96 p.Article in journal (Refereed) Published
Abstract [en]

This study characterized follicular activity and oestrous behaviour from 5 to 9 days post-calving up to the 4th ovulation postpartum (pp) in 16 multiparous (range 2-7 parities) Thai swamp buffalo cows (Bubalus bubalis), aged 4-12 years and weighing from 432 to 676 kg. Ovarian follicular activity was examined by transrectal ultrasonography (TUS) every morning. Oestrous detection was performed twice daily by direct personal observation of behaviour and for presence of clear cervical mucus discharge and indirectly by video camera recording during 21 h/day. A follicular wave-like pattern was present before the 1st ovulation leading to short oestrous cycles. Growth rates and maximum diameters of the ovulatory follicles did not differ between the 1st and 4th ovulations. However, growth rate for non-ovulatory dominant follicles (DF) before the 1st ovulation was lower than for the ovulatory follicle (p < 0.05). In addition, the diameter of all ovulatory follicles (14.3 +/- 0.46 mm, n = 39) was significantly larger (p < 0.01) than those of the preceding last but one non-ovulatory DF (10.8 +/- 0.20 mm, n = 5), but similar to the last preceding non-ovulatory DF diameter (12.92 +/- 0.96 mm, n = 14). Short oestrous cycles were most common between the 1st and 2nd ovulations (93.75%, 15/16 cows, 10.2 +/- 0.38 days) decreasing in prevalence thereafter (50%, 3/6 buffaloes, 12.0 +/- 1.53 days). Oestrous signs were relatively vague around the 1st ovulation pp to become more easily detectable thereafter. This study suggests that properly fed swamp buffaloes could be mated successfully within 2 months pp, at their 2nd spontaneous ovulation, provided oestrous detection is at least performed daily at 06:00-08:00 hour.

Place, publisher, year, edition, pages
Blackwell Verlag, 2011. Vol. 46, no 1, e91-e96 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-74965DOI: 10.1111/j.1439-0531.2010.01647.xOAI: oai:DiVA.org:liu-74965DiVA: diva2:498914
Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2017-12-07

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Rodriguez-Martinez, Heriberto

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