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Table 1 Commercial name of feed additives, active ingredients, concentration when mixed with complete feed at the manufacturers’ recommended doses (1×) and twice the manufacturers’ recommended doses (2×) along with pH of the diet and additive mixture

From: Feed additives decrease survival of delta coronavirus in nursery pig diets

Feed additive (Manufacturer); (Active ingredients)

Amount

pH1

Complete feed

0

0

5.82c ± 0.02

5.82c ± 0.02

UltraAcid P (Nutriad, Dendermonde, Belgium); (orthophosphoric, citric, fumaric, and malic acids)

150 mg

300 mg

5.84c ± 0.03

5.78c ± 0.02

Acid Booster (Agri-Nutrition, DeForest, WI); (phosphoric, citric, and lactic acids)

10 mg

20 mg

5.84c ± 0.02

5.84cg ± 0.05

KEMGEST (Kemin Agrifoods, Des Moines, IA); (phosphoric, fumaric, lactic, and citric acid)

10 mg

20 mg

4.20e ± 0.03

3.98e ±0.03

Activate DA (Novus International, St. Charles, MO); (fumaric, benzoic, and 2-hydroxy-4-methylthiobutanoic acids)

20 mg

40 mg

5.50b ± 0.03

5.11b ± 0.02

Luprosil (Propionic acid, BASF, Florham Park, NJ); (99.5% propionic acid)

56 μl

112 μl

5.74d ± 0.03

5.67d ± 0.03

Amasil (Formic Acid, BASF, Florham Park, NJ); (61% formic acid, 20.5% sodium formate, 18.5% water)

46 μl

92 μl

5.88c ± 0.03

5.88gh ± 0.01

Sugar (Shoppers Value, Eden Prairie, MN); (sucrose)

20 mg

40 mg

3.22f ± 0.04

2.93f ± 0.02

Salt (Essential Every-day, Eden Prairie, MN); (sodium chloride)

20 mg

40 mg

4.93a ± 0.05

4.39a ± 0.03

  1. 1Results shown are means of three replications; different superscripts differ at (P < 0.05)