Morphological adaptation of rumen papillae during the dry period and early lactation as affected by rate of increase of concentrate allowance

Journal of Dairy Science
K DiehoJ Dijkstra

Abstract

Knowledge of the morphological adaptation of rumen papilla, which plays an important role in volatile fatty acid absorption, in dry and early lactation dairy cattle is limited. Therefore, macro- and microscopic changes in papilla morphology during the dry period and lactation and the effect of rate of increase of concentrate allowance were studied. Samples were collected from 12 rumen-cannulated Holstein Friesian dairy cows during a pretreatment period, 50, 30, and 10 d antepartum (the dry period) and 3 d postpartum (pp), and a treatment period, 9, 16, 30, 44, 60, and 80 d pp. Cows had free access to either a dry period ration [27% grass silage, 27% corn silage, 35% wheat straw, and 11% soybean meal on a dry matter (DM) basis] or a basal lactation ration (42% grass silage, 41% corn silage, and 17% soybean meal on a DM basis, and 0.9 kg of DM/d concentrate). Treatment consisted of either a rapid (1.0 kg of DM/d; RAP; n=6) or gradual (0.25 kg of DM/d; GRAD; n=6) increase of concentrate allowance (up to 10.9 kg of DM/d), starting at d 4 pp, aimed at creating a contrast in rumen-fermentable organic matter (FOM) intake. Papillae were collected from the ventral, ventral blind, and dorsal blind rumen sacs and measured digitally. Intak...Continue Reading

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Citations

Feb 5, 2019·Tropical Animal Health and Production·Adriana Garzón-Audor, Olimpo Oliver-Espinosa
Sep 5, 2019·Journal of Animal Physiology and Animal Nutrition·Taylor E NovakSonia J Moisá
Feb 7, 2020·Animal : an International Journal of Animal Bioscience·J DijkstraA Bannink
May 10, 2020·Animals : an Open Access Journal From MDPI·Julien SoulatIsabelle Dufrasne
Aug 23, 2020·Animals : an Open Access Journal From MDPI·Osvaldo Bogado PascottiniGeert Opsomer
Feb 13, 2021·Microorganisms·Cátia PacíficoQendrim Zebeli

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