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Pelvic dimensions in phenotypically double-muscled Belgian Blue cows

Iris Kolkman (UGent) , Geert Hoflack (UGent) , S Aerts, H Laevens, D Lips and Geert Opsomer (UGent)
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Abstract
Some anatomical characteristics of 507 Belgian Blue (BB) cattle, withers height (WH), heart girth (HG), the distance between the two tubera coxae (TcTc) and the distance between the two tubera ischiadica (TiTi), were compared with the internal pelvic measurements of width, height and area. Mean values were 58.9 +/- 6.2 cm for TcTc, 14.6 +/- 2.3 cm for TiTi, 15.2 +/- 2.1 cm for pelvic width (PW), 18.8 +/- 1.9 cm for pelvic height (PH) and 288.5 +/- 60.9 cm2 for pelvic area (PA). Cows that calved per vaginam had larger WH (p < 0.05), TcTc (p < 0.05) and TiTi (p < 0.001) and internal pelvic measurements [PH and PA (p < 0.001)] compared with those whose parturition was managed by caesarean section (CS): Correlations between internal pelvic measurements and TcTc were higher (r = 0.580.63) than TiTi (r = 0.220.28). Correlations between other external body measures such as HG and WH with the internal pelvic measurements were even higher for HG (r = 0.690.74) and for WH (r = 0.670.74). HG and WH, together with internal pelvic measures, may be added to estimated breeding values (EBVs) that should assist breeders in selecting cows that can calve per vaginam, thereby reducing the breeds dependence on elective CS for maintaining its unique characteristics.
Keywords
HERITABILITIES, TRAITS, AREA, GENETIC-PARAMETERS, CALVING EASE, BEEF-CATTLE, BODY MEASUREMENTS, SIMMENTAL CATTLE, STILLBIRTH, DIFFICULTY

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Chicago
Kolkman, Iris, Geert Hoflack, S Aerts, H Laevens, D Lips, and Geert Opsomer. 2012. “Pelvic Dimensions in Phenotypically Double-muscled Belgian Blue Cows.” Reproduction in Domestic Animals 47 (3): 365–371.
APA
Kolkman, I., Hoflack, G., Aerts, S., Laevens, H., Lips, D., & Opsomer, G. (2012). Pelvic dimensions in phenotypically double-muscled Belgian Blue cows. REPRODUCTION IN DOMESTIC ANIMALS, 47(3), 365–371.
Vancouver
1.
Kolkman I, Hoflack G, Aerts S, Laevens H, Lips D, Opsomer G. Pelvic dimensions in phenotypically double-muscled Belgian Blue cows. REPRODUCTION IN DOMESTIC ANIMALS. 2012;47(3):365–71.
MLA
Kolkman, Iris, Geert Hoflack, S Aerts, et al. “Pelvic Dimensions in Phenotypically Double-muscled Belgian Blue Cows.” REPRODUCTION IN DOMESTIC ANIMALS 47.3 (2012): 365–371. Print.
@article{2132880,
  abstract     = {Some anatomical characteristics of 507 Belgian Blue (BB) cattle, withers height (WH), heart girth (HG), the distance between the two tubera coxae (TcTc) and the distance between the two tubera ischiadica (TiTi), were compared with the internal pelvic measurements of width, height and area. Mean values were 58.9 +/- 6.2 cm for TcTc, 14.6 +/- 2.3 cm for TiTi, 15.2 +/- 2.1 cm for pelvic width (PW), 18.8 +/- 1.9 cm for pelvic height (PH) and 288.5 +/- 60.9 cm2 for pelvic area (PA). Cows that calved per vaginam had larger WH (p {\textlangle} 0.05), TcTc (p {\textlangle} 0.05) and TiTi (p {\textlangle} 0.001) and internal pelvic measurements [PH and PA (p {\textlangle} 0.001)] compared with those whose parturition was managed by caesarean section (CS): Correlations between internal pelvic measurements and TcTc were higher (r = 0.580.63) than TiTi (r = 0.220.28). Correlations between other external body measures such as HG and WH with the internal pelvic measurements were even higher for HG (r = 0.690.74) and for WH (r = 0.670.74). HG and WH, together with internal pelvic measures, may be added to estimated breeding values (EBVs) that should assist breeders in selecting cows that can calve per vaginam, thereby reducing the breeds dependence on elective CS for maintaining its unique characteristics.},
  author       = {Kolkman, Iris and Hoflack, Geert and Aerts, S and Laevens, H and Lips, D and Opsomer, Geert},
  issn         = {0936-6768},
  journal      = {REPRODUCTION IN DOMESTIC ANIMALS},
  keyword      = {HERITABILITIES,TRAITS,AREA,GENETIC-PARAMETERS,CALVING EASE,BEEF-CATTLE,BODY MEASUREMENTS,SIMMENTAL CATTLE,STILLBIRTH,DIFFICULTY},
  language     = {eng},
  number       = {3},
  pages        = {365--371},
  title        = {Pelvic dimensions in phenotypically double-muscled Belgian Blue cows},
  url          = {http://dx.doi.org/10.1111/j.1439-0531.2011.01881.x},
  volume       = {47},
  year         = {2012},
}

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