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Performance and energy metabolism in restrictively fed weanling pigs are not affected by feeding either fermented cereals or their end‐products
Author(s) -
Bruininx E. M. A. M.,
Binnendijk G. P.,
Zandstra T.,
Heetkamp M. J. W.,
Van Der PeetSchwering C. M. C.,
Gerrits W. J. J.
Publication year - 2010
Publication title -
journal of animal physiology and animal nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.651
H-Index - 56
eISSN - 1439-0396
pISSN - 0931-2439
DOI - 10.1111/j.1439-0396.2010.01021.x
Subject(s) - weanling , fermentation , dry matter , zoology , food science , respiratory quotient , postprandial , metabolism , chemistry , feces , organic matter , composition (language) , biology , biochemistry , microbiology and biotechnology , endocrinology , ecology , linguistics , philosophy , organic chemistry , insulin
Summary To study the effects of feeding fermented cereals or just fermentation end‐products on performance and energy metabolism, 18 restrictedly fed groups of eight pigs each were assigned to one of three dietary treatments: (i) a liquid control diet (C) containing 40% of a mixture of barley and wheat; or (ii) a liquid diet (F) containing 40% fermented barley and wheat; or (iii) a liquid diet as C with the addition of some important fermentation end‐products (FP; organic acids and ethanol) in concentrations similar to those in the fermented F‐diet. Energy and nitrogen balances, heat production, and performance traits were measured during two consecutive periods (days 1–5 and days 6–14). There was a considerable increase in average dry matter intake that tended (p = 0.06) to be higher in the FP‐group than in the other groups. Apparent fecal digestibility of dry matter, ash, nitrogen and energy during period 2 were not affected (p > 0.1). Averaged over both periods, none of the energy metabolism parameters were affected by the diets (p > 0.1). However, there were diet × period interactions for metabolizable energy‐intake (p = 0.07), energy retention (p < 0.05), the respiratory quotient (RQ; p < 0.01) and activity‐related heat production ( H ACT, p = 0.05). Additionally, there were some differences between the diets in the average hourly patterns in RQ and H ACT . In conclusion, restricted feeding of either 40% fermented cereals nor their fermentation end‐products affected performance and energy metabolism traits in weanling pigs. Nevertheless, lower postprandial activity‐related heat production by pigs given the fermented cereals suggest a stimulating effect of fermented cereals on short term satiety that was not seen in pigs given fermentation end‐products only.