Abstract
Effect of Benzoic Acid and Essential Oil Blends on Viral Load in Swine Feed and Vitamin Premix
Highlights
Investigations into the cause of the 2013 porcine epidemic diarrhea virus (PEDV) outbreak in North American swine herds led to feed being identified as a likely vector of disease.[3]
This study investigated the use of benzoic acid (BA) and an essential oil blend (EO) to mitigate the presence of porcine epidemic diarrhea virus (PEDV), porcine reproductive and respiratory syndrome virus (PRRSV), and Senecavirus A (SVA) in a complete diet (Exp. 1) and a vitamin premix (Exp. 2)
Four treatments consisting of 0.5% BA; 0.5% BA and 200 ppm EO; 0.3% BA and 120 ppm EO; and 0.25% BA and 100 ppm EO were used in the complete feed, in addition to a control with no feed additive to test the mitigant’s effect on PEDV, PRRSV, and SVA detection
Summary
Investigations into the cause of the 2013 porcine epidemic diarrhea virus (PEDV) outbreak in North American swine herds led to feed being identified as a likely vector of disease.[3]. Thermal processing has been shown to be effective at reducing PEDV in feed, but it does not provide any protection if virus is reintroduced to the feed during a later handling step. Feed additives such as medium chain fatty acids (MCFA), acidifiers, or formaldehyde have been studied and demonstrated to be beneficial at reducing the amount of detectible virus in feed and feedstuffs.[5] This study aimed to determine the impact of varying levels of benzoic acid (BA) and an essential oils blend (EO) inclusion in feed and vitamin premix on detectible PEDV, porcine reproductive and respiratory syndrome virus (PRRSV), and Senecavirus A (SVA) using real-time quantitative reverse transcriptase polymerase chain reaction (qRT-PCR)
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