Milk composition, milk fatty acid profile, digestion, and ruminal fermentation in dairy cows fed whole flaxseed and calcium salts of flaxseed oil

Journal of Dairy Science
C CôrtesH V Petit

Abstract

Four ruminally lactating Holstein cows averaging 602+/-25 kg of body weight and 64+/-6 d in milk at the beginning of the experiment were randomly assigned to a 4 x 4 Latin square design to determine the effects of feeding whole flaxseed and calcium salts of flaxseed oil on dry matter intake, digestibility, ruminal fermentation, milk production and composition, and milk fatty acid profile. The treatments were a control with no flaxseed products (CON) or a diet (on a dry matter basis) of 4.2% whole flaxseed (FLA), 1.9% calcium salts of flaxseed oil (SAL), or 2.3% whole flaxseed and 0.8% calcium salts of flaxseed oil (MIX). The 4 isonitrogenous and isoenergetic diets were fed for ad libitum intake. Experimental periods consisted of 21 d of diet adaptation and 7 d of data collection and sampling. Dry matter intake, digestibility, milk production, and milk concentrations of protein, lactose, urea N, and total solids did not differ among treatments. Ruminal pH was reduced for cows fed the CON diet compared with those fed the SAL diet. Propionate proportion was higher in ruminal fluid of cows fed CON than in that of those fed SAL, and cows fed the SAL and CON diets had ruminal propionate concentrations similar to those of cows fed the...Continue Reading

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Citations

Sep 14, 2011·The Journal of Dairy Research·Cristiano CôrtesHélène V Petit
Mar 19, 2016·Animal Science Journal = Nihon Chikusan Gakkaihō·Wisitiporn SuksombatRattakorn Mirattanaphrai
Oct 11, 2015·Journal of Animal Physiology and Animal Nutrition·A B NavesF P Rennó
Oct 29, 2011·Journal of Dairy Science·A L Martínez MarínM A de la Fuente
Jul 23, 2014·Asian-Australasian Journal of Animal Sciences·Wisitiporn SuksombatRattakorn Mirattanaphrai

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