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 427137
Title Effects of dietary fibers with different physiochemical properties on feeding motivation in adult female pigs
Author(s) Souza Da Silva, C.; Borne, J.J.G.C. van den; Gerrits, W.J.J.; Kemp, B.; Bolhuis, J.E.
Source Physiology and Behavior 107 (2012)2. - ISSN 0031-9384 - p. 218 - 230.
Department(s) Adaptation Physiology
Animal Nutrition
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) chain fatty-acids - resistant starch - physical-activity - gastrointestinal-tract - growing pigs - food-intake - nonstarch polysaccharides - appetite regulation - energy-metabolism - animal-welfare
Abstract he satiating effects of dietary fiber may depend more on physicochemical properties of the fiber than on total fiber intake. These properties are expected to affect satiety feelings and feeding motivation due to different effects in the gastrointestinal tract. The aim of the current study was to assess the effects of fibers with varying physicochemical properties (bulkiness, viscosity and fermentability) on feeding motivation in adult female pigs. Sixteen pair-housed pigs received four diets: lignocellulose (LC), pectin (PEC), resistant starch (RS), and control (C) without fiber, in four periods in a Latin square design. Each fiber was fed at a low (L) followed by a high (H) inclusion level (7 days each). At 1 h, 3 h, and 7 h after the morning meal, feeding motivation was assessed in an operant test, where turning a wheel yielded multiple food rewards, and in a runway test, where walking a fixed U-shaped track yielded one food reward. Pigs were observed in their home pen for 6 h, using 90-s instantaneous scan sampling. In the operant test, throughout the day feeding motivation was higher for pigs on PEC compared with pigs on LC. In the runway, feeding motivation increased particularly at 1 h after the meal for pigs on PEC compared with pigs on RS. Also at 7 h, feeding motivation tended to decrease for pigs on RS compared with pigs fed other diets. In their home pen, pigs on PEC showed more feeder-directed behavior compared with pigs on RS. In conclusion, PEC was the least satiating fiber. LC and RS, despite a lower supply of available energy, were the most satiating fibers, possibly due to their bulky and fermentation properties, respectively.
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