Effect of formaldehyde treatment on the rumen digestion of barley and wheat grain and its influence on hay intake and digestion by sheep

Hyslop, J. J.; Weir, J. A.; Offer, N.W.; Reid, Spencer; Wilcock, J.M.

doi:10.1016/0377-8401(89)90107-7

Cited by 6 publications

(2 citation statements)

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“…Compared with untreated corn, formaldehyde treatment reduced (P<0.01) digestion of starch in the stomach by approximately 38% for both levels of corn content. Formaldehyde treatment has been reported previously to reduce ruminal digestion of corn (Fluharty and Loerch 1989) and wheat and barley (Hyslop et al 1989). Fluharty and Loerch (1989) noted that ruminal starch digestion decreased 30 and 41.5% as a result of I and 2% formaldehyde treatment, respectively, compared with untreated corn; in vitro DM .…”

Section: Resultsmentioning

confidence: 91%

Effects of dietary level and formaldehyde treatment of corn on nutrient digestion and metabolism in sheep

Oke¹,

Loerch²,

Redman³

1991

Can. J. Anim. Sci.

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The effects of dietary level and formaldehyde treatment of corn on ruminal and intestinal digestion of starch and nitrogen (N), N metabolism, and concentration of plasma metabolites were determined. Four wethers (average wt 32 kg) with duodenal and ileal cannulae were fed diets containing either formaldehyde-treated or untreated corn at 50 or 75% of total dietary dry matter intake. The design was a 4 × 4 Latin square with a 2 × 2 factorial arrangement of treatments. Starch digested in the stomach (percentage of intake) was reduced 38% (P < 0.01) by formaldehyde treatment of corn, whereas starch digested in the small intestine (percentage of intake or of flow to small intestine) was increased (P < 0.01) by formaldehyde treatment. An increase (P < 0.01) in starch digested in the small intestine (as a percentage of intake and flow of starch to the small intestine) was observed for treated corn vs. untreated corn at both the 50 and 75% levels. The magnitude of improvement in N retention for formaldehyde-treated vs. untreated corn was dependent on the level of corn in the diet (interaction, P < 0.01). Concentrations of plasma glucose were 21% greater (P < 0.05) when wethers were fed treated corn than when they were fed untreated corn. Wethers fed treated corn also had lower (P < 0.05) concentrations of plasma urea N and essential amino acids than when they were fed untreated corn. These data suggest that formaldehyde treatment of corn shifted the site of digestion of a large proportion of dietary starch from the fore-stomach to the small intestine. Formaldehyde treatment of corn enhanced metabolic utilization of amino acids as reflected by improved N retention, decreased concentrations of essential amino acids and urea N in plasma. Key words: Sheep, formaldehyde, starch, corn, digestion, metabolism

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