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5 March 2019 Effects of dietary protected organic acids on growth performance, nutrient digestibility, fecal microflora, diarrhea score, and fecal gas emission in weanling pigs
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Abstract

A total of 112 weanling pigs with an average body weight of 6.70 ± 1.31 kg were allotted to one of four experimental diets for a 6 wk feeding trail to evaluate the effects of protected organic acids on growth performance, nutrient digestibility, and fecal microbial counts. Diets consisted of basal diet (CON), CON + 0.2% unprotected organic acid (UOA), CON + 0.1% protected organic acid (POA1), and CON + 0.2% POA (POA2). Feeding POA diets to weanling pigs increased (P < 0.05) the average daily gain (ADG) during 0–2 wk and overall experimental period, and it also increased (P < 0.05) the apparent total tract digestibility (ATTD) of dry matter (DM) compared with UOA. The addition of increasing levels of POA showed greater (linear effect, P < 0.05) ADG, gain/feed ratio, and ATTD of DM. In addition, dietary inclusion of increasing levels of POA linearly increased (P < 0.05) the fecal Lactobacillus counts, whereas the Escherichia coli and Salmonella counts, diarrhea score, fecal ammonia, and acetic acid emissions were reduced (linear effect, P < 0.05). In conclusion, dietary supplementation of 0.2% POA to weanling pigs has the potential to improve growth performance and reduce diarrhea incidence while balancing microbial counts.

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Y. Yang, K.Y. Lee, and I.H. Kim "Effects of dietary protected organic acids on growth performance, nutrient digestibility, fecal microflora, diarrhea score, and fecal gas emission in weanling pigs," Canadian Journal of Animal Science 99(3), 514-520, (5 March 2019). https://doi.org/10.1139/cjas-2018-0159
Received: 22 August 2018; Accepted: 11 December 2018; Published: 5 March 2019
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