estrus detection

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karthibiochem
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estrus detection

Any realiable method to detect exact heat period in bufalo??

The FFM
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1: Theriogenology. 2007 Jan

1: Theriogenology. 2007 Jan 15;67(2):209-16. Epub 2006 Nov 16.

Protocols for synchronizing estrus and ovulation in buffalo (Bubalus bubalis): a
review.

De Rensis F, López-Gatius F.

Department of Animal Health, University of Parma, via del Taglio 8, 43100 Parma,
Italy. eval(unescape('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%22%6d%61%69%6c%74%6f%3a%66%61%62%69%6f%2e%64%65%72%65%6e%73%69%73%40%75%6e%69%70%72%2e%69%74%22%3e%66%61%62%69%6f%2e%64%65%72%65%6e%73%69%73%40%75%6e%69%70%72%2e%69%74%3c%2f%61%3e%27%29%3b'))

Poor estrus expression and a prolonged intercalving interval compromise the
reproductive efficiency of female buffaloes. These limitations are exacerbated
during the hot season, when fertility decreases dramatically. Pregnancy rate
decrease further because difficulties in detecting estrus. To improve
reproductive efficiency, several protocols of estrus and ovulation
synchronization have been developed. These procedures are based on manipulating
the CL, either to induce premature luteolysis using prostaglandins or to prolong
the luteal phase using progestagens. However, it has recently emerged that a more
precise manipulation of follicular development may be needed to achieve better
synchrony of ovulation and improve fertility. Researchers have therefore turned
their attention to evaluating programs in which hormones such as GnRH, FSH, LH,
eCG, hCG, prostaglandins, progesterone and estradiol are administered. This
review considers the impacts of estrus and ovulation synchronization protocols on
fertility in the buffalo. In general, it may be stated that buffaloes respond
well to the exogenous administration of hormones, and artificial insemination is
possible at a pre-established time after synchronizing ovulation. Most combined
hormone protocols give satisfactory pregnancy rates, comparable to those achieved
in animals inseminated at natural estrus.

PMID: 17112577 [PubMed - indexed for MEDLINE]

Related Links

Efficacy of Heatsynch protocol for induction of estrus, synchronization of
ovulation and timed artificial insemination in yaks (Poephagus grunniens L.).
[Anim Reprod Sci. 2008] PMID:17383122

Efficacy of the Ovsynch protocol for synchronization of ovulation and fixed-time
artificial insemination in Murrah buffaloes (Bubalus bubalis). [Theriogenology.
2005] PMID:16125551

Manipulation and control of the estrous cycle in pasture-based dairy cows.
[Theriogenology. 2006] PMID:16278012

Estrus synchronization with lower dose of PGF2 alpha and subsequent fertility in
subestrous buffalo. [Theriogenology. 1998] PMID:10734427

Follicular dynamics and steroid profiles in cows during and after treatment with
progestin-based protocols for synchronization of estrus. [J Anim Sci. 2004]
PMID:15080323

The FFM
The FFM's picture
Also

Also
"Detection of oestrous-related odour in bovine (Bos taurus)
saliva: bioassay of identified compounds"

at
http://journals.cambridge.org/download.php?file=%2FANM%2FANM1_09%2FS1751731107000614a.pdf&code=76ee4a38b10caa1550aadfcbedad50cd

karthibiochem
karthibiochem's picture
Thanks for ur information

Thanks for ur information
If possible send me any buffalo related articles...
now iam concentrating the buffalo reproduction related research.