Visceral tissue growth and proliferation during the bovine lactation cycle

Journal of Dairy Science
R L BaldwinA V Capuco

Abstract

Twenty one multiparous, nonpregnant, lactating dairy cows were used to assess the impact of stage of lactation on visceral tissue mass and small intestinal cell proliferation. Cows were slaughtered at each of 4 stages of lactation: 14, 90, 120, and 240 d of lactation. With stage of lactation, DMI increased through d 90 and thereafter remained similar through d 240 (quadratic). Carcass weight and empty body weight (EBW) declined with stage of lactation through d 120 and increased thereafter (quadratic). As a percentage of EBW, rumen, small intestine, and liver weights increased with increasing stage of lactation (quadratic), increasing from 14 to 120 d and declining through 240 d. Stage of lactation did not have a measurable affect on reticulum, omasum, abomasum, or large intestine weights as a percentage of EBW. Visceral adipose mass as a percentage of EBW declined with stage of lactation to a minimum at 120 d and increased by 240 d (quadratic). Concentrations of RNA and DNA of digestive tract organs were largely unaffected by stage of lactation with the exception of the liver DNA concentration through d 120 (quadratic). The proliferative growth fraction (Ki67) was unaffected by stage of lactation. However, bromo-deoxyuridine l...Continue Reading

References

Sep 1, 1989·The Journal of Nutrition·M GillL P Milligan
Nov 1, 1986·The British Journal of Nutrition·C L FerrellJ A Nienaber
Mar 1, 1980·Analytical Biochemistry·C Labarca, K Paigen
Oct 1, 1982·The Journal of Nutrition·R CañasR L Baldwin
May 1, 1997·Journal of Animal Science·R D Sainz, B E Bentley
Jan 1, 1963·The Journal of Pathology and Bacteriology·B F FELLR M CAMPBELL

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Citations

Jul 1, 2010·Animal : an International Journal of Animal Bioscience·J J Loor
Feb 27, 2018·Biological Trace Element Research·Victor PereiraMarta Miranda
Mar 14, 2016·Journal of Dairy Science·Michael A SteeleLe Luo Guan
Jul 19, 2005·Journal of Mammary Gland Biology and Neoplasia·Ronald L HorstTimothy A Reinhardt
Aug 18, 2009·Anatomia, histologia, embryologia·W PérezM Clauss
Jul 23, 2018·Journal of Animal Science·Alberto CasalMariana Carriquiry
Jun 21, 2019·Animal : an International Journal of Animal Bioscience·A CasalM Carriquiry

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