1997
DOI: 10.2527/1997.752512x
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The effects of chemical treatment of whole canola seed on intake, nutrient digestibilities, milk production, and milk fatty acids of Holstein cows.

Abstract: To determine the effect of alkaline hydrogen peroxide treatment of whole canola seed on milk fatty acid composition, 12 multiparous lactating Holstein cows (618 kg, 47 d in milk) were fed total mixed rations in a replicated (3) 4 x 4 Latin square designed experiment. The control diet contained no supplemental fat source. Canola seed (11.2%), either crushed or treated with alkaline hydrogen peroxide or Megalac (5.6%) were supplemental fat sources in the crushed, treated, and calcium salts of long-chain fatty ac… Show more

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Cited by 32 publications
(26 citation statements)
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References 38 publications
(46 reference statements)
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“…The decrease in the concentration of tSFA is consistent with the known effect of canola/rapeseed on milk SFA profile [2,37]. Production of acetic, propionic, and butyric acids by rumen microbes as substrates for energy synthesis have been associated with the production of short and medium branched-chain SFA [38,39].…”
Section: Discussionsupporting
confidence: 66%
“…The decrease in the concentration of tSFA is consistent with the known effect of canola/rapeseed on milk SFA profile [2,37]. Production of acetic, propionic, and butyric acids by rumen microbes as substrates for energy synthesis have been associated with the production of short and medium branched-chain SFA [38,39].…”
Section: Discussionsupporting
confidence: 66%
“…However, dietary fat can negatively affect fiber digestion (Jenkins & Jenny 1989;Aldrich et al 1997;NARO 2007) and may also contribute to milk fat depression (Pantoja et al 1994). In order to avoid such effects, by-pass fat that is not soluble in the rumen is made available.…”
Section: Introductionmentioning
confidence: 99%
“…Rapeseed is an oilseed containing a high proportion of unsaturated fatty acids, principally oleic acid (C18:1n-9) and linoleic acid (C18:2n-6), and is readily available in the UK. Aldrich et al 8 reported the bene®ts of supplying unsaturated fatty acids to dairy cows in the form of crushed or chemically treated rapeseed (or canola seed) as a means of manipulating the milk fat composition and subsequently observed no ill effects on rumen metabolism. It was therefore considered of bene®t to further explore the use of rapeseed in the diet of the dairy cow to modify the milk fat composition by investigating the degree to which the effect of the digestive processes of the ruminant are capable of penetrating its protective shell.…”
Section: Introductionmentioning
confidence: 99%