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Table 4 Litter size during the first parturition by sow group and peripartum diet

From: Effect of spray-dried porcine plasma in peripartum sow feed on subsequent litter size

  

Peripartum diet, % SDPPb

 

Statistics (F-test, P =)c

Variable

Groupa

0

0.5

2.5

SEM

PR

D

L

Q

INT

Sows, n

All

147

167

138

–

–

–

–

–

–

Y

94

111

90

–

–

–

–

–

–

P1

47

55

45

–

–

–

–

–

–

P2

47

56

45

–

–

–

–

–

–

M

53

56

48

–

–

–

–

–

–

Total born pigsd

All

14.68

14.69

13.82

0.30

<  0.01

0.06

0.02

0.62

0.42

Y

14.23

14.10

12.83

0.36

0.11

<  0.01

<  0.01

0.73

0.33

P1

13.65

14.17

12.37

0.50

     

P2

14.81

14.02

13.29

0.50

     

M

15.10

15.29

15.00

0.64

0.59

0.93

0.82

0.78

0.42

Live born pigs

All

12.65

13.12

12.28

0.29

0.07

0.10

0.14

0.12

0.16

Y

12.68

12.93

11.56

0.34

0.02

<  0.01

<  0.01

0.26

0.21

P1

11.83

12.89

11.13

0.49

     

P2

13.53

12.96

11.98

0.49

     

M

12.76

13.37

13.13

0.58

0.41

0.72

0.80

0.43

0.55

Stillborn pigse

All

1.84

1.40

1.34

0.17

<  0.01

0.06

0.08

0.09

0.71

Y

1.41

1.05

1.16

0.18

0.18

0.22

0.49

0.10

0.25

P1

1.72

1.16

1.09

0.24

     

P2

1.11

0.93

1.22

0.24

     

M

2.07

1.61

1.59

0.43

0.84

0.65

0.50

0.46

0.71

Stillborn, %e

All

11.78

8.77

9.29

1.01

0.03

0.06

0.23

0.04

0.46

Y

9.98

7.04

9.04

1.14

0.20

0.14

0.98

0.04

0.12

P1

12.25

8.19

8.05

1.61

     

P2

7.71

5.88

10.04

1.61

     

M

12.83

9.98

9.78

2.25

0.73

0.53

0.41

0.38

0.82

Mummiese

All

0.19

0.17

0.21

0.05

0.02

0.87

0.75

0.67

0.92

Y

0.11

0.11

0.14

0.05

0.66

0.84

0.56

0.92

0.57

M

0.26

0.31

0.28

0.14

0.29

0.96

0.99

0.77

0.54

Mummified, %e

All

1.22

1.11

1.46

0.39

0.07

0.80

0.56

0.74

0.94

Y

0.75

0.68

1.18

0.44

0.44

0.66

0.40

0.76

0.30

M

1.58

2.13

1.82

0.87

0.28

0.88

0.96

0.61

0.36

  1. a Results for group All included data of all sows, group Y included data only for young (parity 1 and parity 2) sows and group M included data only for mature sows (parity 3 to 8)
  2. b Values are least squares means (LSM) and pooled standard error of the mean (SEM) for peripartum diets by sow group. The interaction of diet and parity LSM and SEM are shown for some variables in the Y group as P1 (parity 1 sows) or P2 (parity 2 sows)
  3. c Each sow group was analyzed using a mixed model for the effects of PR (sow parity), D (peripartum diet), L (linear contrast of % SDPP in diet), Q (quadratic contrast of % SDPP in diet) and INT (interaction of parity and diet)
  4. d Included the covariance of sow age at the initial parturition in the mixed model used for Y group sows only
  5. e Included the covariance of total born pigs in the mixed model for each sow group
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Porcine Health Management

ISSN: 2055-5660

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