Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 507849
Title Pre-calving feeding of rumen-protected rice bran to multiparous dairy cows improves recovery of calcaemia after calving
Author(s) Martín-Tereso López, J.; Martens, Holger; Deiner, Carolin; Laar, H. van; Hartog, Leonard den; Verstegen, Martin W.A.
Source Journal of Dairy Research 83 (2016)3. - ISSN 0022-0299 - p. 281 - 288.
DOI http://dx.doi.org/10.1017/S002202991600039X
Department(s) Animal Nutrition
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) Calcium homoeostasis - milk fever - phytic acid - rice bran - rumen protection
Abstract

Dairy cows can have different degrees of hypocalcaemia around calving. Lowering dietary Ca availability before calving can prevent it. Rice bran, treated for lower rumen degradability of phytic acid can reduce dietary availability of Ca. During 3 periods of 3 weeks, 113 multiparous cows calved in a single close-up group, which was fed first a control diet, then 140 g/kg DM of rumen-protected rice bran, and at last the control diet again. Cows joined the group 3 weeks before expected calving date and left it at calving. Blood samples were taken weekly before parturition and 0, 6 and 12 h after calving, as well as 3 and 28 d in lactation. Serum was analysed for Ca, Mg, and P. Rice bran introduction produced a transient serum Ca decrease. Rice bran feeding reduced serum P and its withdrawal reduced serum Mg. Serum Ca at calving, nadir of serum Ca and serum Ca the first 3 d after calving was higher in cows calving during rice bran feeding. Serum P decreased less and recovered faster after calving when cows had been fed rice bran. Rumen-protected rice bran reduced dietary availability of Ca and induced adaptation of Ca metabolism resulting in improved Ca and P homoeostasis at calving.

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