Keywords
acid-binding capacity, soy products, zinc oxide, nursery pig
Abstract
A total of 1,057 pigs (PIC TR4 × [Fast LW × PIC L02]; initially 13.7 lb) were used to evaluate the effects of acid-binding capacity-4 (ABC-4) with or without pharmacological levels of Zn on nursery pig performance. At weaning, pigs were allotted to 1 of 4 dietary treatments based on initial weight. There were 22 pigs per pen and 12 replications per treatment. Dietary treatments were arranged in a 2 × 2 factorial consisting of a low and high ABC-4 level with or without pharmacological levels of Zn provided by ZnO. The low ABC-4 diets contained 13.0 and 10.75% novel soy protein concentrate (AX3 Digest; Protekta; Plainfield, IN) in phase 1 and 2, respectively. The high ABC-4 diets contained 15.85 and 13.15% enzymatically treated soybean meal (HP 300; Hamlet Protein; Findlay, OH) in phase 1 and 2, respectively, replacing the soy protein concentrate on an SID Lys basis. The low ABC-4 diets without ZnO were formulated to 150 and 200 meq in phase 1 and 2, respectively. Replacing novel soy protein concentrate with enzymatically treated soybean meal increased the ABC-4 of the diet by approximately 104 to 127 meq/kg. Diets with added ZnO increased the ABC-4 of the diet by approximately 60 to 65 meq/kg. Pigs were fed experimental diets during phase 1 (d 0 to 7) and phase 2 (d 7 to 21). Following phase 2, pigs were placed on a common diet for an additional 21 d (d 21 to 42). During the experimental period, ABC-4 × ZnO interactions were observed (P ≤ 0.026) where pigs fed a low ABC-4 diet had improved (P < 0.05) ADG and F/G when ZnO was not present, but no differences (P > 0.10) were observed based on ABC-4 level when ZnO was added. Overall, there was an ABC-4 × ZnO interaction (P = 0.002) observed where pigs fed a high ABC-4 had increased (P < 0.05) removals and mortalities when ZnO was not present, and no differences (P > 0.10) due to ABC-4 level were observed when ZnO was added. For economics, there was an ABC-4 × ZnO interaction (P ≤ 0.039) where pigs fed low ABC-4 diets had increased (P < 0.05) gain value, feed cost, and IOFC when ZnO was not present, and no differences (P > 0.10) due to ABC-4 level were observed when ZnO was added. In summary, a low ABC-4 diet can improve growth performance, reduce the instance of removals and mortalities, and improve economics in nursery pigs when ZnO is not present in the diet.
Recommended Citation
Stas, Ethan B.; Warner, Alan J.; Hastad, Chad W.; Tokach, Mike D.; Woodworth, Jason C.; DeRouchey, Joel M.; Goodband, Robert D.; and Gebhardt, Jordan T.
(2022)
"Effects of Varying the Acid-Binding Capacity-4 in Diets Utilizing Specialty Soy Products with or without Pharmacological Levels of Zinc on Nursery Pig Performance,"
Kansas Agricultural Experiment Station Research Reports:
Vol. 8:
Iss.
10.
https://doi.org/10.4148/2378-5977.8370
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