Table 5.

Effect of supplemental Zn in late gestation on total number of low birth weight piglets

	Treatment
Item	CON1	INT2	HI3	Chi-square4	P-value
Low birth weight (≤1.00 kg)	240	165	231	10.78	<0.01
Normal birth weight (≥1.01 kg)	1,325	1,259	1,294
Total pigs born	1,565	1,424	1,525
Incidence of low birth weight, %5	15.3	11.6	15.1

¹Diets containing 125 ppm supplemental Zn as AvailaZinc and ZnSO₄·H₂O.

²Diets containing 365 ppm supplemental Zn as Control + ZnSO₄·H₂O.

³Diets containing 595 ppm supplemental Zn as Control + ZnSO₄·H₂O.

⁴df = 2.

⁵Calculated as (number of low birth weight pigs/total pigs born) × 100.