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14 April 2020 Effect of dietary inclusion of antioxidants and organic trace minerals on growth performance, carcass characteristics, and meat quality of finishing pigs with pre-slaughter transportation
Chong Wang, Junhong Wang, Sirui Qi, Cunzhu Xu, Yanming Wang, Haifeng Wang
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Abstract

A total of 320 pigs (body weight = 98 ± 4 kg) were assigned to four treatments, with eight replicates (pens) per treatment. Pigs were fed the following diets: a control diet (CON), the CON diet plus antioxidant blends (AOX), organic trace minerals (OTM), or both (AOX + OTM). After the feeding trial, two pigs from each pen were selected for slaughtering right away or after transportation. The inclusion of AOX, OTM, or AOX + OTM had no significant effect on feed intake, average daily gain, and feed efficiency compared with CON (P > 0.05). The pre-transportation significantly reduced the pH value of loin meat at 24 h post mortem and leg meat at 45 min post mortem (P < 0.05). The pigs in the AOX, OTM, and AOX + OTM group had significantly lower plasma malondialdehyde (MDA) content than the CON group (P < 0.05). Pre-transportation resulted in significantly higher meat MDA contents (P < 0.05), clearly influencing the oxidative stress of pigs. The inclusion of antioxidant blends or organic trace minerals had no significant effect on the growth performance and antioxidant capacity of finishing pigs.

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Chong Wang, Junhong Wang, Sirui Qi, Cunzhu Xu, Yanming Wang, and Haifeng Wang "Effect of dietary inclusion of antioxidants and organic trace minerals on growth performance, carcass characteristics, and meat quality of finishing pigs with pre-slaughter transportation," Canadian Journal of Animal Science 100(3), 577-585, (14 April 2020). https://doi.org/10.1139/cjas-2019-0177
Received: 5 October 2019; Accepted: 3 February 2020; Published: 14 April 2020
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KEYWORDS
carcass quality
feed antioxidant
organic trace mineral
performance
pigs
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