scholarly journals Effect of Dietary Cation-Anion Difference and Dietary Crude Protein on Performance of Lactating Dairy Cows During Hot Weather

2007 ◽  
Vol 90 (4) ◽  
pp. 1842-1850 ◽  
Author(s):  
C.D. Wildman ◽  
J.W. West ◽  
J.K. Bernard
Keyword(s):  
Dairy Cows ◽  
Crude Protein ◽  
Dietary Crude Protein ◽  
Lactating Dairy Cows ◽  
Hot Weather

Effects of dietary protein concentration on the efficiency of nitrogen utilisation in lactating dairy cows

2009 ◽  
Vol 2009 ◽  
pp. 78-78
Author(s):  
T Yan ◽  
F J Young ◽  
D C Patterson ◽  
C S Mayne
Keyword(s):  
Dairy Cows ◽  
Crude Protein ◽  
Protein Concentration ◽  
Production Systems ◽  
Mitigation Strategies ◽  
The European Union ◽  
Dietary Crude Protein ◽  
Lactating Dairy Cows ◽  
Stocking Rates ◽  
Animal Production Systems

The European Union Nitrates Directives set a limit on the amount (170 kg/ha) of manure nitrogen (N, = faecal N + urine N) that may be applied to land each year. This limit has very significant implications for stocking rates on intensive livestock farms. Consequently, there is increasing interest in developing mitigation strategies to reduce N output in faeces and urine in animal production systems. The objectives of the present study were to evaluate the effects of dietary crude protein (CP) concentration on the efficiency of N utilisation in lactating dairy cows.

Effects of dietary protein concentration on energetic efficiency and methane emission in lactating dairy cows

2009 ◽  
Vol 2009 ◽  
pp. 24-24
Author(s):  
T Yan ◽  
F J Young ◽  
D C Patterson ◽  
C S Mayne
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Methane Emission ◽  
Dietary Protein ◽  
Crude Protein ◽  
Protein Concentration ◽  
Energetic Efficiency ◽  
Dietary Crude Protein ◽  
Lactating Dairy Cows ◽  
Dietary Protein Source

A series of studies have been undertaken to examine effects of dietary protein source and concentration on milk production, energy and nitrogen (N) utilisation efficiencies and fertility in dairy cows. The present study evaluated effects of dietary crude protein (CP) concentration on energetic efficiency and methane emission in lactating dairy cows.

scholarly journals Urea-N recycling in lactating dairy cows fed diets with 2 different levels of dietary crude protein and starch with or without monensin

2014 ◽  
Vol 97 (3) ◽  
pp. 1611-1622 ◽  
Author(s):  
E.B. Recktenwald ◽  
D.A. Ross ◽  
S.W. Fessenden ◽  
C.J. Wall ◽  
M.E. Van Amburgh
Keyword(s):  
Dairy Cows ◽  
Crude Protein ◽  
Dietary Crude Protein ◽  
Lactating Dairy Cows ◽  
Different Levels
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