0729 Effect of dextrose and purified starch at two levels of rumen degradable protein on lactation performance and enteric methane emission in dairy cows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 349-349
Author(s):  
F. Sun ◽  
M. J. Aguerre ◽  
M. A. Wattiaux
Keyword(s):  
Dairy Cows ◽  
Methane Emission ◽  
Lactation Performance ◽  
Enteric Methane ◽  
Degradable Protein

Forage and Flax Seed Impact on Enteric Methane Emission in Dairy Cows

2011 ◽  
Vol 4 (1) ◽  
pp. 1-8 ◽  
Author(s):  
V. Sejian ◽  
J. Lakritz ◽  
T. Ezeji ◽  
R. Lal
Keyword(s):  
Dairy Cows ◽  
Methane Emission ◽  
Flax Seed ◽  
Enteric Methane

Influence of a dietary excess of rumen degradable or undegradable protein on the lactation performance of Dairy cows

1984 ◽  
Vol 1984 ◽  
pp. 3-3
Author(s):  
B. Sloan ◽  
P. Rowlinson ◽  
D.G. Armstrong
Keyword(s):  
Dairy Cows ◽  
Early Lactation ◽  
Microbial Protein ◽  
Lactation Performance ◽  
Protein Requirement ◽  
Tissue Protein ◽  
Protein Requirements ◽  
Minimum Requirements ◽  
Rumen Microflora ◽  
Degradable Protein

The basis of the proposed scheme introduced by the A.R.C. (1980) for calculating the protein requirements of ruminants is the division of the protein requirement into two parts, (1) a minimum rumen degradable protein (RDP) supply to satisfy the requirements of the rumen microflora for cell wall synthesis, (2) a minimum undegradable protein (UDP) supply (protein that passes through the rumen to the intestine) which supplements the microbial protein produced in the rumen ensuring the tissue protein requirements of the ruminant can be met. The purpose of the experiment reported here was to investigate the effects on lactation parameters of feeding early lactation cattle levels of UDP or RDP above the minimum requirements proposed by the A.R.C. (1980).

A prediction equation for enteric methane emission from dairy cows for use in NorFor

2013 ◽  
Vol 63 (3) ◽  
pp. 126-130 ◽  
Author(s):  
N. I. Nielsen ◽  
H. Volden ◽  
M. Åkerlind ◽  
M. Brask ◽  
A. L. F. Hellwing ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Emission ◽  
Prediction Equation ◽  
Enteric Methane

scholarly journals Predicting enteric methane emission of dairy cows with milk Fourier-transform infrared spectra and gas chromatography–based milk fatty acid profiles

2018 ◽  
Vol 101 (6) ◽  
pp. 5582-5598 ◽  
Author(s):  
S. van Gastelen ◽  
H. Mollenhorst ◽  
E.C. Antunes-Fernandes ◽  
K.A. Hettinga ◽  
G.G. van Burgsteden ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Fourier Transform ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Infrared Spectra ◽  
Methane Emission ◽  
Fourier Transform Infrared ◽  
Milk Fatty Acid ◽  
Fatty Acid Profiles ◽  
Enteric Methane

scholarly journals Enteric methane emission, milk production, and composition of dairy cows fed 3-nitrooxypropanol

2021 ◽  
Vol 104 (1) ◽  
pp. 357-366
Author(s):  
A. Melgar ◽  
C.F.A. Lage ◽  
K. Nedelkov ◽  
S.E. Räisänen ◽  
H. Stefenoni ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Methane Emission ◽  
Enteric Methane

scholarly journals A Basic Model to Predict Enteric Methane Emission from Dairy Cows and Its Application to Update Operational Models for the National Inventory in Norway

2021 ◽  
Author(s):  
Puchun Niu ◽  
Angela Schwarm ◽  
Helge Bonesmo ◽  
Alemayehu Kidane ◽  
Bente Aspeholen Åby ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Emission ◽  
Neutral Detergent Fiber ◽  
Published Data ◽  
Operational Model ◽  
National Inventory ◽  
Basic Model ◽  
Ch4 Production ◽  
Wide Range ◽  
Enteric Methane

The aim of this study was to develop a basic model to predict enteric methane emission from dairy cows and to update operational calculations for the national inventory in Norway. Basic models were developed using a database with 63 treatment means from 19 studies. The database included records for enteric CH4 production (MJ/day), dry matter intake (DMI), and dietary nutrient composition. The basic models were evaluated against an external database (n=36, from ten studies) along with other extant models. When evaluated by low root mean square prediction errors and high concordance correlation coefficients, the developed basic models that included DMI, dietary concentrations of fatty acids and neutral detergent fiber performed slightly better in predicting CH4 emissions than extant models. In order to propose country-specific values for the CH4 conversion factor Ym (% of gross energy intake partitioned into CH4) and thus to carry out the national inventory for Norway, the existing operational model was updated for the prediction of Ym over a wide range of feeding situations using energy corrected milk and dietary concentrate share as predictor variables. Input values of Ym were updated based on the results from the basic models. The predicted Ym ranged from 6.22 to 6.72%. In conclusion, the prediction of CH4 production from dairy cows was improved with the help of newly published data, which enabled an update of the operational model for calculating the national inventory of CH4 in Norway.

scholarly journals Enteric methane emission and digestion in dairy cows fed wheat or molasses

2020 ◽  
Vol 103 (2) ◽  
pp. 1448-1462
Author(s):  
C.F. Børsting ◽  
M. Brask ◽  
A.L.F. Hellwing ◽  
M.R. Weisbjerg ◽  
P. Lund
Keyword(s):  
Dairy Cows ◽  
Methane Emission ◽  
Enteric Methane

scholarly journals Enteric methane emission from grazing dairy cows receiving corn silage or ground corn supplementation

2019 ◽  
Vol 253 ◽  
pp. 65-73 ◽  
Author(s):  
A.C. Dall-Orsoletta ◽  
M.M. Oziemblowski ◽  
Alexandre Berndt ◽  
H.M.N. Ribeiro-Filho
Keyword(s):  
Dairy Cows ◽  
Methane Emission ◽  
Corn Silage ◽  
Enteric Methane ◽  
Grazing Dairy Cows ◽  
Ground Corn
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