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Table 3 Treatment by parity effect on number stillborn and stillbirth rate from Experiment 2

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

 

Treatment

Paritya

Glucosamine

Glucose

 

Number stillborn

Stillbirth rate

Number stillborn

Stillbirth rate

2

1.0 ± 0.3 (20)b

0.06 ± 0.02

0.8 ± 0.3 (20)

0.06 ± 0.02

3

1.4 ± 0.3 (30)

0.08 ± 0.02

1.0 ± 0.3 (30)

0.07 ± 0.01

4

0.9 ± 0.4 (15)

0.06 ± 0.02

1.3 ± 0.4 (16)

0.07 ± 0.02

5

1.8 ± 0.4 (14)

0.09 ± 0.02

1.8 ± 0.5 (11)

0.11 ± 0.03

6

1.8 ± 0.4 (14)

0.10 ± 0.03

2.2 ± 0.4 (15)

0.11 ± 0.03

7

2.1 ± 0.3 (23)

0.14 ± 0.03

1.5 ± 0.3 (23)

0.10 ± 0.02

8

2.6 ± 0.4 (12)

0.22 ± 0.04

1.2 ± 0.4 (12)

0.09 ± 0.03

  1. aFor both traits, the interaction contrast comparing the interaction between treatments and parities 2 through 6 combined versus parities 7 and 8 combined was statistically significant (P < 0.05), indicating that more stillborn piglets occurred in the glucosamine-treated parity 7 and 8 sows compared to earlier parity sows. Least squares means for the treatment by parity interaction for number of stillborn piglets and stillbirth rate from Exp. 2 are presented
  2. bNumbers of observations are in parentheses