Comparison between the effects of feeding copper sulphate‐treated and untreated rapeseed cake containing high glucosinolates on rumen fermentation, nutrient digestion and nitrogen metabolism in steers

2021 ◽  
Author(s):  
Yuchao Zhao ◽  
Jian Gao ◽  
Biao Xie ◽  
Guangyong Zhao
Keyword(s):  
Nitrogen Metabolism ◽  
Copper Sulphate ◽  
Rumen Fermentation ◽  
Rapeseed Cake ◽  
Nutrient Digestion

Effect of different methods for conserving rice grain on in situ ruminal degradation and in vivo nutrient digestion and rumen fermentation in steers

2018 ◽  
Vol 89 (7) ◽  
pp. 972-978 ◽  
Author(s):  
Makoto Miyaji ◽  
Hidehiko Inoue ◽  
Tetsuo Kawaide ◽  
Masanori Tohno ◽  
Yuko Kamiya ◽  
...  
Keyword(s):  
Rumen Fermentation ◽  
Rice Grain ◽  
Nutrient Digestion ◽  
Ruminal Degradation

Effects of copper sulphate and coated copper sulphate addition on lactation performance, nutrient digestibility, ruminal fermentation and blood metabolites in dairy cows

2020 ◽  
pp. 1-9
Author(s):  
C. Wang ◽  
L. Han ◽  
G. W. Zhang ◽  
H. S. Du ◽  
Z. Z. Wu ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Copper Sulphate ◽  
Milk Fat ◽  
Block Design ◽  
Nutrient Digestibility ◽  
Cellulolytic Enzyme ◽  
Ruminal Fermentation ◽  
Cellulolytic Bacteria ◽  
Nutrient Digestion ◽  
Milk Performance

Abstract Coated copper sulphate (CCS) could be used as a Cu supplement in cows. To investigate the influences of copper sulphate (CS) and CCS on milk performance, nutrient digestion and rumen fermentation, fifty Holstein dairy cows were arranged in a randomised block design to five groups: control, CS addition (7·5 mg Cu/kg DM from CS) or CCS addition (5, 7·5 and 10 mg Cu/kg DM from CCS, respectively). When comparing Cu source at equal inclusion rates (7·5 mg/kg DM), cows receiving CCS addition had higher yields of fat-corrected milk, milk fat and protein; digestibility of DM, organic matter (OM) and neutral-detergent fibre (NDF); ruminal total volatile fatty acid (VFA) concentration; activities of carboxymethyl cellulase, cellobiase, pectinase and α-amylase; populations of Ruminococcus albus, Ruminococcus flavefaciens and Fibrobacter succinogenes; and liver Cu content than cows receiving CS addition. Increasing CCS addition, DM intake was unchanged, yields of milk, milk fat and protein; feed efficiency; digestibility of DM, OM, NDF and acid-detergent fibre; ruminal total VFA concentration; acetate:propionate ratio; activity of cellulolytic enzyme; populations of total bacteria, protozoa and dominant cellulolytic bacteria; and concentrations of Cu in serum and liver increased linearly, but ruminal propionate percentage, ammonia-N concentration, α-amylase activity and populations of Prevotella ruminicola and Ruminobacter amylophilus decreased linearly. The results indicated that supplement of CS could be substituted with CCS and addition of CCS improved milk performance and nutrient digestion in dairy cows.

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