Dry matter intake and feeding behaviour of grazing dairy cows offered a mixed ration with or without canola meal

2017 ◽  
Vol 57 (7) ◽  
pp. 1277 ◽  
Author(s):  
M. M. Wright ◽  
M. J. Auldist ◽  
E. Kennedy ◽  
N. Galvin ◽  
F. R. Dunshea ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Feeding Behaviour ◽  
Dry Matter ◽  
Grazing Intensity ◽  
Ground Level ◽  
Dry Matter Intake ◽  
Canola Meal ◽  
Wheat Grain ◽  
Eating Time ◽  
Grazing Dairy Cows

Dry matter intake and feeding behaviour were measured in grazing dairy cows fed partial mixed rations with (PMR+C) and without (PMR–C) canola meal. In spring (early lactation), 32 Holstein–Friesian dairy cows were offered two amounts of the two supplement treatments in a two × two factorial arrangement of treatments for 24 days. Amounts of supplement were low (8 kg DM/cow.day) versus high (14 kg DM/cow.day). The PMR–C ration comprised wheat grain (59.5%, DM basis), maize grain (18.9%) and lucerne hay (21.6%). The PMR+C ration was the same, except some wheat grain was substituted with canola meal (21.6%). Both rations were isoenergetic, with a grain to forage ratio of 78 : 22 (DM basis). All cows were offered a low pasture allowance of 10 kg DM/cow.day to ground level. Replacing some wheat in a ration with canola meal increased pasture and total eating time. Dry matter intake did not differ between PMR–C and PMR+C cows. The present experiment also demonstrated that altering the amount of supplement did not influence the increase in eating time that occurred as a result of the inclusion of canola meal. Increasing the amount of supplement reduced pasture intake as a result of a reduction in grazing time and grazing intensity.

scholarly journals Herbage dry matter intake estimation of grazing dairy cows based on animal, behavioral, environmental, and feed variables

2019 ◽  
Vol 102 (4) ◽  
pp. 2985-2999 ◽  
Author(s):  
M. Rombach ◽  
K.-H. Südekum ◽  
A. Münger ◽  
F. Schori
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Grazing Dairy Cows

scholarly journals The addition of external water to fresh grass does not affect dry matter intake, feeding behaviour and rumen characteristics in dairy cows

2003 ◽  
Vol 52 (1) ◽  
pp. 3-16 ◽  
Author(s):  
Jos� Israel Cabrera Estrada ◽  
R�my Delagarde ◽  
Philippe Faverdin ◽  
Jean-Louis Peyraud
Keyword(s):  
Dairy Cows ◽  
Feeding Behaviour ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
External Water

Response of lactating dairy cows to dietary protein from canola meal or distillers’ grains on dry matter intake, milk production, milk composition, and amino acid status

2015 ◽  
Vol 95 (2) ◽  
pp. 267-279 ◽  
Author(s):  
I. P. Acharya ◽  
D. J. Schingoethe ◽  
K. F. Kalscheur ◽  
D. P. Casper
Keyword(s):  
Amino Acid ◽  
Dairy Cows ◽  
Milk Production ◽  
Dietary Protein ◽  
Dry Matter ◽  
Milk Composition ◽  
Distillers Grains ◽  
Dry Matter Intake ◽  
Canola Meal ◽  
Acid Status

Acharya I. P., Schingoethe D. J., Kalscheur K. F. and Casper D. P. 2015. Response of lactating dairy cows to dietary protein from canola meal or distillers’ grains on dry matter intake, milk production, milk composition, and amino acid status. Can. J. Anim. Sci. 95: 267–279. A study was conducted to determine the response of feeding two different crude protein (CP) concentrations [low protein (LP, 14.3% CP) and high protein (HP, 16.3% CP)] and sources of protein [canola meal (CM) and high-protein dried distillers’ grains (HPDDG)] on dry matter intake, milk production and composition, and amino acid (AA) status of high producing dairy cows. Sixteen Holstein cows were used in a replicated 4×4 Latin square having a 2×2 factorial arrangement of treatments. All diets contained 55% forage (50% alfalfa hay and 50% corn silage) and 45% concentrate. Diets were formulated to contain LP with CM, LP with HPDDG, HP with CM and HP with HPDDG. Experimental feeding periods were 4 wk with data collected during weeks 3 and 4 of each period. Dry matter intake (24.6 vs. 25.9 kg d−1 for LP and HP, respectively) was increased for cows fed the higher CP diets, milk yield was greater for cows fed HP diets (34.0 vs. 36.4 kg d−1), and milk fat percentage was greater for cows fed HP compared with LP, but were similar between dietary protein sources. Feed efficiency calculated as fat-corrected milk and energy-corrected milk was greater for cows fed HP than LP, but was similar between sources. Dietary metabolizable protein of CM diets was utilized more efficiently than from HPDDG diets for milk protein production. Mammary gland extraction efficiency of essential AA indicated that Met was the first limiting AA for CM-based diets while Lys was first limiting for HPDDG-based diets. In summary, canola meal and distillers’ grains are both good quality protein supplements for lactating cows.

scholarly journals Adaptation and evaluation of the GrazeIn model of grass dry matter intake and milk yield prediction for grazing dairy cows

animal ◽  
2014 ◽  
Vol 8 (4) ◽  
pp. 596-609 ◽  
Author(s):  
B.F. O’Neill ◽  
E. Ruelle ◽  
M. O’Donovan ◽  
L. Shalloo ◽  
F.J. Mulligan ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Yield Prediction ◽  
Grazing Dairy Cows

Effects of feeding wheat or corn and of rumen fistulation on milk production and methane emissions of dairy cows

2019 ◽  
Vol 59 (5) ◽  
pp. 891 ◽  
Author(s):  
P. J. Moate ◽  
S. R. O. Williams ◽  
M. H. Deighton ◽  
M. C. Hannah ◽  
B. E. Ribaux ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Fat ◽  
Dry Matter ◽  
Milk Composition ◽  
Methane Emissions ◽  
Dry Matter Intake ◽  
Canola Meal ◽  
Ch4 Emissions

There has been little research that has quantified methane (CH4) yields when dairy cows consume diets containing wheat grain. Furthermore, although rumen-fistulated animals have been used in many experiments concerned with measuring CH4 emissions, no research has examined the effect of rumen fistulation on in vivo CH4 emissions and yield. This experiment examined the effects of including either wheat or corn grain in the diet and the effects of rumen fistulation on yields of milk and milk components, CH4 emissions, yields, and intensities. Eight rumen-fistulated and six non-fistulated Holstein dairy cows in late lactation were offered a wheat-based diet (WHT) and a corn-based diet (CRN) in a crossover design. For the WHT diet, cows were offered daily, 22.4 kg DM containing 45.5% lucerne hay, 8.9% canola meal, 0.5% mineral mix, 0.5% molasses powder and 44.6% rolled wheat. The CRN diet was similar to the WHT diet except that rolled corn replaced the wheat. There was no difference between the WHT and CRN diets on mean milk yields (27.8 vs 27.9 kg/day), but the WHT diet substantially reduced milk fat concentration (2.76 vs 4.23%) and milk fat yield (0.77 vs 1.18 kg/day). Methane emissions (218 vs 424 g/day), CH4 yield (11.1 vs 19.5 g/kg dry matter intake) and CH4 intensity (7.6 vs 15.7 g/kg milk) were all reduced ~45% by the WHT diet compared with the CRN diet. Rumen fistulation did not affect dry matter intake, milk production, milk composition or CH4 emissions, but decreased CH4 yield and intensity. Including wheat in the diet of dairy cows has the potential to be an effective strategy to reduce their greenhouse gas emissions. In addition, rumen fistulation was associated with a small reduction in CH4 yield and intensity, and this should be considered when using rumen-fistulated cows in research concerned with CH4 emissions.

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