Effects of a blend of acidifiers added continuously to the drinking water of nursery piglets
Huillian Zecchin A , Aline Carolina Tillmann A , Bruna Camila Ladwig A , Liliana Bury de Azevedo A , Pedro Silva Careli B , Damares de Castro Fidelis Toledo B , Hellen Lazarino Oliveira Vilela B , Silvana Teixeira Carvalho A , Leandro Batista Costa C , Daiane Carvalho D , Jansller Luiz Genova
B * and Paulo Levi de Oliveira Carvalho A
A
B
C
D
Abstract
Adding organic and inorganic acids to the drinking water is a potential alternative to improve production results in nursery piglets, and a strategy for reducing the use of antimicrobials.
To assess the effects of adding a blend of organic and inorganic acids to drinking water on the oxireduction potential (ORP) of water, and growth performance, biochemical, antioxidant and blood gas profiles, intestinal morphometry, biometry of organs, and intestinal microbiome of nursery piglets.
Experiment involved 1080 female piglets assessed over 30 days (Landrace × Large White, weaned at 26 days of age, weighing 6.8 ± 0.29 kg), randomly assigned to the following three treatments: (1) piglets received drinking water of natural pH of 7.39 (pH7.39), (2) piglets received drinking water of pH of 5.31 (pH5.31), and (3) piglets received drinking water of pH of 3.40 (pH3.40), with eight replicates and 45 piglets/stall. Piglets had ad libitum access to diet and water throughout the experiment, and received different diets in each phase.
Receiving drinking water of pH3.40 promoted a higher ORP, and a lower total water consumption was observed in Starter II piglets with pH5.31. There was no treatment effect on the performance, but mortality was lower in starter piglets in the pH3.40 treatment. Animals in the pH3.40 treatment had lower blood alanine aminotransferase and aspartate aminotransferase activities, differing from the result obtained for total cholesterol concentrations. Animals in the pH3.40 treatment showed a lower concentration of total protein than did piglets in the pH7.39 treatment. Piglets in the pH3.40 treatment had higher weights of empty stomach, spleen, and liver with gallbladder than did those in the pH7.39 treatment. Animals in the pH3.40 treatment showed a lower relative abundance of the Escherichia–Shigella genus and bacteria of Enterobacteriaceae family than did those in the pH5.31 treatment.
Acidification of drinking water to pH3.40 for nursery piglets can be used to partially increase the ORP of the water, and promote a greater weight of organs with metabolic and immune functions, while decreasing mortality. In addition, acidification of drinking water does not compromise performance or intestinal histology, but improves the profile of the intestinal microbiome in piglets.
This research has provided new information on the effects of acidifiers in the drinking water for nursery piglets and has shown their potential use for bolstering general health.
Keywords: acidifiers, blood profile, drinking water, feed additive, growth performance, intestinal health, microbiome, weaned piglets.
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