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A total of 140 weaning pigs ((Landrace×Yorkshire)×Duroc, BW = 6.47±0.86 kg) were used in a 5-wk growth trail to determine the effects of phytoncide supplementation on growth performance, nutrient apparent total tract digestibility (ATTD), blood profiles, diarrhea scores and fecal microflora shedding. Pigs were assigned randomly by BW into 5 treatments, dietary treatments were: i) NC, basal diet; ii) PC, NC+0.05% tylosin; iii) EO, NC+0.1% essential oil; iv) PP, NC+0.2% PP (phytoncide with 2% citric acid), and v) PA, NC+0.2% PA (phytoncide). Each treatment had 7 replicate pens with 4 pigs per pen. All pigs were housed in pens with a self-feeder and nipple drinker to allow ad libitum access to feed and water throughout the experimental period. During 0 to 2 wks, supplementation with essential oil and PA decreased (p&lt;0.05) G/F compared with the other treatments. During 2 to 5 wks, supplementation with PA led to a higher (p&lt;0.05) G/F than the other treatments. At 2 wk, ATTD of dry matter (DM) and gross energy (GE) in EO treatment were decreased (p&lt;0.05) compared with NC treatment. Dietary PC treatment improved (p&lt;0.05) ATTD of DM and E compared with the CON group, and PA and PP treatments showed a higher (p&lt;0.05) ATTD of E than that in NC treatment. Pigs fed phytoncide (PA and PP) had a greater (p&lt;0.05) ATTD of DM than those of NC and EO treatments at 5 wk. Moreover, supplementation with phytoncide elevated (p&lt;0.05) the concentration of immunoglobulin (IgG) in blood at 2 wk. The inclusion of EO, PP and PA treatments showed a greater (p&lt;0.05) amount of fecal Lactobacillus compared with CON group. However, no difference (p&gt;0.05) was observed in diarrhea scores among treatments. In conclusion, phytoncide can elevate feed efficiency, nutrient digestibility, and improve the fecal Lactobacillus counts in weaning pigs. Our results indicated that the phytoncide could be used as a good antibiotics alternative in weaning pigs.

asian-australasian journal of animal sciences

Influences of Phytoncide Supplementation on Growth Performance, Nutrient Digestibility, Blood Profiles, Diarrhea Scores and Fecal Microflora Shedding in Weaning Pigs