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Effects of ketosis in dairy cows on blood biochemical parameters, milk yield and composition, and digestive capacity Cover

Effects of ketosis in dairy cows on blood biochemical parameters, milk yield and composition, and digestive capacity

Open Access
|Oct 2019

Figures & Tables

Nutritional levels in manure and refused TMR

Refused TMR
Faeces
ItemHealthyKetosisHealthyKetosis
DM (%)50.97 ± 1.9849.95 ± 1.0316.81 ± 1.4616.37 ± 1.39
Composition, % DM
NDF39.66 ± 3.7740.52 ± 3.7150.67 ± 3.5149.08 ± 2.76
ADF21.05 ± 0.8719.06 ± 0.84*33.77 ± 1.8532.79 ± 2.02
Starch16.43 ± 0.3915.73 ± 0.372.45 ± 0.202.44 ± 0.26
Crude protein10.99 ± 0.0810.75 ± 1.092.48 ± 0.332.32 ± 0.22
Crude fat5.81 ± 1.695.18 ± 0.460.53 ± 0.421.73 ± 0.78**
Total carbon42.53 ± 0.3643.10 ± 1.7341.77 ± 0.5742.30 ± 2.05
Ca (g/kg)10.57 ± 1.5610.25 ± 1.235.7 ± 0.975.8 ± 0.63
P (g/kg)4.33 ± 0.344.47 ± 0.551.63 ± 0.341.48 ± 0.27
Gross energy (Mcal/kg)2.19 ± 0.132.12 ± 0.080.60 ± 0.070.71 ± 0.05*

Milk production characteristics and digestive capacity

ItemHealthyKetosis
Milk yield (kg/cow/day)27.56 ± 9.7527.83 ± 8.11
Fat yield(kg/cow/day)0.93 ± 0.411.18 ± 0.41*
Protein yield (kg/cow/day)0.86 ± 0.240.77 ± 0.22
Lactose yield(kg/cow/day)1.42 ± 0.541.36 ± 0.39
ECM (kg/cow/day)25.03 ± 8.6527.31 ± 8.08
DMI (kg/day)14.41 ± 2.5411.30 ± 3.01**
FDM (kg/day)5.26 ± 1.193.24 ± 0.98**
ECM/DMI1.44 ± 0.382.15 ± 0.76**
FDM/DMI0.37 ± 0.080.29 ± 0.05**
DM digestibility (%)63.14 ± 7.871.41 ± 4.81**

Components of the feed

Ingredient, g/kgDiet
Corn silage380.40
Alfalfa50.71
Oat grass25.35
Chinese hay22.82
Cotton seed32.96
Soybean21.30
Tableting corn32.45
Concentrated feed234.63
Water199.38

Plasma and milk variables

ItemHealthyKetosis
Plasma samples
BHBA (mmol/L)0.68 ± 0.153.41 ± 1.52**
NEFA (mmol/L)0.41 ± 0.181.18 ± 0.37**
Glu (mmol/L)4.23 ± 0.582.74 ± 0.51**
Ca (mmol/L)2.18 ± 0.142.08 ± 0.15 *
AST (U/L)82.88 ± 13.15139.03 ± 52.6**
ALT (U/L)20.56 ± 1.4122.22 ± 5.52
TC (mmol/L)3.21 ± 0.773.12 ± 1.09
TG (mmol/L)0.17 ± 0.030.15 ± 0.03
TBIL (mmol/L)1.79 ± 0.154.98 ± 1.52**
GGT (U/L)21.0 ± 2.442.09 ± 18.14**
Milk samples
Milk fat (%)3.35 ± 0.864.43 ± 0.88**
Milk protein (%)3.32 ± 0.382.78 ± 0.35**
Fat/ Protein1.04 ± 0.311.55 ± 0.34**
Milk lactose (%)5.12 ± 0.34.91 ± 0.21**
Nonfat milk solids (%)9.2 ± 0.448.79 ± 0.53**
Dry matter (%)12.79 ± 2.9913.35 ± 1.26
Milk urea (mg of MUN/dL)15.05 ± 4.9717.01 ± 2.88
Milk citrate (mmol/L)8.63 ± 1.4311.45 ± 1.93**
Language: English
Page range: 555 - 560
Submitted on: Feb 20, 2019
Accepted on: Sep 16, 2019
Published on: Oct 8, 2019
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Wei Yang, Bingbing Zhang, Chuang Xu, Hongyou Zhang, Cheng Xia, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.