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Effects of copper sulphate and coated copper sulphate addition on lactation performance, nutrient digestibility, ruminal fermentation and blood metabolites in dairy cows
- Source :
- British Journal of Nutrition. 125:251-259
- Publication Year :
- 2020
- Publisher :
- Cambridge University Press (CUP), 2020.
-
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.
- Subjects :
- Copper Sulfate
Rumen
040301 veterinary sciences
Medicine (miscellaneous)
Feed conversion ratio
0403 veterinary science
Animal science
Lactation
medicine
Animals
Pectinase
chemistry.chemical_classification
Nutrition and Dietetics
Fibrobacter succinogenes
Chemistry
Microbiota
0402 animal and dairy science
food and beverages
Nutrients
04 agricultural and veterinary sciences
Animal Feed
040201 dairy & animal science
Enzymes
medicine.anatomical_structure
Liver
Dietary Supplements
Fermentation
Propionate
Animal Nutritional Physiological Phenomena
Cattle
Digestion
Female
Subjects
Details
- ISSN :
- 14752662 and 00071145
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- British Journal of Nutrition
- Accession number :
- edsair.doi.dedup.....e42ff7fc23e8e559589acaaa3c3103c1