Effect of oregano essential oil on growth performance,carcass traits,and meat quality of growing-finishing pigs
HE Liwei
WANG Xiaodong
ZHENG Juhong
CAO Leping
LIANG Jianping
Abstract：This study investigated the effects of replacing antibiotics with oregano essential oil on growth performance,diarrhea rate,carcass traits,and meat quality in growing-finishing pigs.80 three-way hybrid growing-finishing pigs with a weight of(40.44±1.66)kg were selected and randomly divided into four groups,with 20 replicates in each group and one pig per replicate.The control group(CK group)fed a basal diet,the antibiotic group(A1 group)fed a basal diet with 70 mg/kg chlortetracycline,the oregano essential oil groups fed a basal diet with 250(A2 group)and 500 mg/kg(A3 group)oregano essential oil.The pre-test lasted for seven days and the formal test lasted for 90 days.The results showed that compared to CK group,A1,A2 and A3 groups had significantly higher final weight,average daily gain(P<0.05),and significantly lower feed-to-weight ratio(P<0.05).Diarrhea rate in A3 group was significantly lower(P<0.05).The A1,A2 and A3 groups had significantly higher pre-slaughter weight and carcass weight(P<0.05)than the CK group,with A3 group also having higher slaughter rate and amino acid content of leg muscles(P<0.05).Research shows that oregano essential oil can improve growth performance,carcass traits,amino acid content of leg muscles,diarrhea rate,and improves meat quality and flavor in growing-finishing pigs.The addition effect of 500 mg/kg oregano essential oil is better than antibiotics,and can achieve the role of replacing antibiotics.
Keywords：oregano essential oilgrowing-finishing pigsgrowth performancecarcass traitsmeat quality
Publication Date：2025-03-16
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 22-27 )