To investigate the effects of Citrus Extract(CE)on the growth performance,serum immune indicators,and economic benefits of fattening pigs. 120 healthy and similar initial weight(52.74±2.62kg)Du Chang Da fattening pigs were selected and randomly divided into 4 groups,3 replicates,and 10 pigs. Among them,the CON group was fed a basic diet according to the"Piglet and Growing Fattening Pig Compound Feed"(GB/T 5915-2020),while the other three groups were fed a basic diet plus 100 mg/kg(100 CE group),200 mg/kg(200 CE group),and 300 mg/kg(300 CE group)of citrus extract as experimental diets. The preliminary trial period is 7 days,the trial period is 56 days,and the fattening pigs are free to eat and drink during the trial period. Result:(1)With the increase of citrus extract addition in the basal diet,the ADG of fattening pigs first increased and then decreased,and the F/G first decreased and then increased. Among them,compared with the CON group,the ADG of the 100 CE group significantly increased by 7.54％(P<0.05),and the F/G significantly decreased by 7.55％(P<0.05);The ADG of the 200 CE group significantly increased by 8.22％(P<0.05),and the F/G significantly decreased by 8.81％(P<0.05). (2)Compared with the CON group,the serum IgA content in the 100 CE group,200 CE group,and 300 CE group significantly increased by 15.09％(P<0.05),15.09％(P<0.05),and 18.87％(P<0.05);The serum IgG content in the 300 CE group significantly increased by 12.45％(P<0.05),while the TNF-α content significantly decreased by 18.82％(P<0.05).(3) The economic benefits of raising four groups of fattening pigs are 360.66 yuan/head,426.99 yuan/head,434.12 yuan/head,and 393.21 yuan/head,respectively. Among them,the 200 CE group has the best economic benefits. Conclusion:Citrus extract can improve the growth performance,serum immune function,and economic benefits of fattening pigs. Among them,when the amount of citrus extract added is 200mg/kg,the growth performance and economic benefits of fattening pigs are optimal.
维普
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