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 433223
Title Effect of different magnesium sources on digesta and excreta moisture content and production performance in broiler chickens
Author(s) Hangoor, E.; Linde, I.B. van der; Paton, N.D.; Verstegen, M.W.A.; Hendriks, W.H.
Source Poultry Science 92 (2013)2. - ISSN 0032-5791 - p. 382 - 391.
Department(s) Animal Nutrition
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) foot pad dermatitis - dietary electrolyte balance - corn-soybean diets - litter quality - laying hens - gastrointestinal-tract - antidiarrheal activity - chloride requirements - growing turkeys - lower intestine
Abstract Reducing litter moisture is an effective measure to reduce the incidence of footpad dermatitis. Dietary mineral levels affect intestinal conditions with regard to osmolarity and water reabsorption. Magnesium is often used as a laxative, preventing reabsorption of water from the digesta, and as a consequence, more moisture in the excreta. The objective of the current experiment was to evaluate Mg in broiler diets as a model for reduced intestinal water reabsorption. Effects of magnesium source (magnesium sulfate, magnesium oxide, and magnesium chloride), each at 3 levels (0.255, 1.02, and 2.04 g·kg-1 diet), were studied. Measured effects were digesta moisture levels throughout the gastrointestinal tract and the moisture level of the excreta. The 10 treatments were randomly assigned to cages within 6 blocks, resulting in 6 replicates per treatments with 18 birds per replicate. Adding magnesium to the diet of broilers linearly increased the excreta moisture content, following the pattern MgCl > MgSO4 = MgO. This rejects the hypothesis that MgO and MgCl are less laxative sources compared with MgSO4. The magnesium sources most likely changed the water reabsorption in the distal gastrointestinal tract, as confirmed by the increased digesta moisture percentage in the ceca and colon. Increasing dietary MgSO4 linearly reduced BW gain and feed intake, though absolute differences were minor. The results of this experiment show that Mg addition in the diet may be used as a model to study wet litter caused by reduced intestinal water reabsorption.
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