Interrelationships among morphology, echotexture, and function of the bovine corpus luteum during the estrous cycle

Animal Reproduction Science
Luiz Gustavo B SiqueiraJoão Henrique M Viana

Abstract

It has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly co...Continue Reading

References

Sep 1, 1989·Journal of Reproduction and Fertility·O J GintherJ P Kastelic
Feb 1, 1994·Biology of Reproduction·G D NiswenderM C Wiltbank
Jan 1, 1997·Journal of Reproduction and Fertility·J SinghG P Adams
Apr 16, 1998·Journal of Reproduction and Fertility·J SinghG P Adams
Mar 25, 2000·Theriogenology·J W TomG P Adams
May 1, 2001·Theriogenology·C GalliG Lazzari
Jan 5, 2002·Theriogenology·M C WiltbankR Sartori
May 2, 2003·Biology of Reproduction·R DuggavathiN C Rawlings
Jul 1, 2004·Reproduction in Domestic Animals = Zuchthygiene·D Schams, B Berisha
Apr 1, 1991·Theriogenology·M C PieterseM A Taverne
Sep 1, 1994·Theriogenology·T A KruipM C Pieterse
Nov 1, 1995·Theriogenology·J R PursleyM C Wiltbank
Oct 24, 2007·Theriogenology·G A BóG P Adams

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Citations

May 21, 2010·The Journal of Reproduction and Development·Johannes KauffoldMichael Wendt
Jul 1, 2014·Journal of Biochemical and Molecular Toxicology·Wei LiDewen Tong
May 15, 2015·Reproduction in Domestic Animals = Zuchthygiene·L M FigueiraF Z Brandão

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