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Table 2 Data of dry matter intake, milk production, milk composition and serum variables at the diagnosis week, and concentrations of serum indicators prior to the diagnosis of retained placenta (RP)

From: Occurrence of retained placenta is preceded by an inflammatory state and alterations of energy metabolism in transition dairy cows

 

−8 wks before parturation

−4 wks before parturation

RP diagnosis weeka

+4 wks after parturition

 

Item

CON

RP

P-value

CON

RP

P-value

CON

RP

P-value

CON

RP

P-value

DMI, kg/d

16.27 ± 0.82

12.48 ± 0.88

0.02

15.92 ± 0.10

14.28 ± 0.78

0.08

20.34 ± 0.56

15.55 ± 0.88

<0.01

21.68 ± 0.68

20.71 ± 1.34

0.53

Milk production, kg/d

      

30.95 ± 0.32

24.61 ± 3.52

0.13

42.04 ± 2.21

38.32 ± 4.23

0.45

Temperature, °C

38.23 ± 0.15

37.90 ± 0.30

0.42

38.45 ± 0.08

38.42 ± 0.11

0.81

38.42 ± 0.10

38.77 ± 0.16

0.09

38.32 ± 0.05

38.34 ± 0.13

0.87

BCS

2.75 ± 0.22

3.13 ± 0.22

0.18

3.04 ± 0.16

3.21 ± 0.10

0.41

3.17 ± 0.17

3.17 ± 0.15

1.0

2.58 ± 0.08

2.75 ± 0.14

0.41

Milk composition, %, unless otherwise stated

Fat

      

5.08 ± 0.45

4.29 ± 0.44

0.25

   

Protein

      

3.00 ± 0.10

3.12 ± 0.13

0.50

   

Fat : Protein ratio

      

1.69 ± 0.12

1.38 ± 0.14

0.13

   

Lactose

      

4.54 ± 0.05

4.38 ± 0.05

0.05

   

SCC, 103 cells/mL

      

28.33 ± 5.63

108.67 ± 39.46

0.10

   

Milk urea N, mg/dL

      

15.39 ± 0.76

13.33 ± 1.66

0.29

   

TS

      

12.21 ± 0.31

13.98 ± 1.14

0.19

   

Serum parameters

Lactate, μmol/L

2,455 ± 348

4,855 ± 692

0.05

2,162 ± 184

5,507 ± 933

0.03

2,227 ± 320

4,458 ± 925

0.05

2,100 ± 129

3,726 ± 468

0.04

NEFA, mmol/L

140.79 ± 32.77

193.32 ± 54.25

0.41

194 ± 47

182 ± 37.61

0.87

756.51 ± 232.01

471 ± 146

0.34

500.43 ± 151.71

269.48 ± 69.13

0.23

BHBA, μmol/L

352 ± 37.71

340 ± 63.99

0.87

312 ± 18

366 ± 49.62

0.30

827 ± 151.50

553 ± 85

0.15

896.73 ± 188.3

553.15 ± 85.24

0.13

IL-1, pg/mL

317 ± 6.04

347 ± 15.90

0.04

321 ± 1.59

337. ± 6.04

0.02

277 ± 5.42

290 ± 7.36

0.05

270.57 ± 2.87

287.51 ± 8.99

0.05

IL-6, pg/mL

19.23 ± 5.67

100 ± 41.45

0.02

48.24 ± 17.51

69.39 ± 18.43

0.34

23.17 ± 5.18

35.65 ± 21.63

0.59

15.71 ± 3.27

32.99 ± 7.32

0.10

TNF-α, ng/mL

0.34 ± 0.03

1.26 ± 0.30

0.03

0.27 ± 0.05

1.31 ± 0.22

<0.01

0.06 ± 0.03

1.37 ± 0.41

0.01

0.07 ± 0.04

1.04 ± 0.25

0.05

Haptoglobin, mg/mL

0.19 ± 0.03

0.34 ± 0.25

0.58

0.15 ± 0.01

0.07 ± 0.02

<0.01

0.12 ± 0.01

1.06 ± 0.31

<0.01

0.16 ± 0.01

0.17 ± 0.17

0.98

SAA, ug/mL

8,447 ± 3373

24,584 ± 7,794

0.04

3,461 ± 342

19,378 ± 6,445

0.03

10,401 ± 1,722

21,706 ± 8,746

0.04

11,797 ± 1,853

23,955 ± 10,369

<0.01

  1. aCows were diagnosed with retained placenta (n = 6) ranging from week 0 to +1. CON = cows without retained placenta (health control); RP = cows with retained placenta
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891