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Table 5 Parity effects on litter traits from Experiment 2

From: Glucosamine supplementation during late gestation alters placental development and increases litter size

 

Parity

Variable

2

3

4

5

6

7

8

Total borna

14.7 ± 0.6(40)b

15.3 ± 0.5(60)

15.5 ± 0.7(31)

16.4 ± 0.8(25)

17.3 ± 0.7(29)

14.4 ± 0.6(46)

14.5 ± 0.8(24)

Born alivea

13.8 ± 0.6

14.1 ± 0.5

14.4 ± 0.6

14.6 ± 0.7

15.3 ± 0.7

12.6 ± 0.5

12.6 ± 0.7

Mummies

0.29 ± 0.14

0.59 ± 0.12

0.64 ± 0.16

0.53 ± 0.18

0.72 ± 0.17

0.69 ± 0.13

0.48 ± 0.18

Birth weightsc

1.45 ± 0.04

1.45 ± 0.03

1.40 ± 0.04

1.39 ± 0.04

1.33 ± 0.04

1.34 ± 0.03

1.33 ± 0.05

Weaning weightsd

5.29 ± 0.09

5.30 ± 0.08

5.34 ± 0.12

5.38 ± 0.12

5.57 ± 0.11

5.67 ± 0.09

5.64 ± 0.13

Preweaning mortality

0.14 ± 0.02

0.15 ± 0.02

0.17 ± 0.02

0.18 ± 0.02

0.16 ± 0.02

0.22 ± 0.02

0.19 ± 0.03

  1. aContrasts indicated a progressive increase to parity 6, followed by a precipitous decrease (P < 0.05). Litter size trait, birth and weaning weight least squares means for second through eighth parity sows from Exp. 2 are presented
  2. bNumber of observations are in parentheses
  3. cContrasts indicated no differences among parities 2 through 6, and a decrease in parities 7 and 8 (P < 0.01)
  4. d Contrasts indicated a progressive increase from parity 2 to 8 (P < 0.05)
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891