Growth Performance, Carcass Quality, Biochemical and HaematologicalTraits and Immune Response of Growing Rabbits as Affected by Different GrowthPromotersJournal of Animal Physiology and Animal Nutrition, EarlyView The aim of the article was to study the effect of differentgrowth promoters on growth performance, carcass quality, biochemical andhaematological traits and immune response of growing rabbits. A total number of 105 male growing NZW rabbits during 35–91days of age were randomly distributed among 7 groups fed the same basal dietand submitted to different dietary treatments: the first group wasunsupplemented and used as control; the other groups were supplementedrespectively with bee pollen and/or propolis at 200 mg/kg BW of each and inulinand/or mannanoligosaccharides (MOS) at 35 mg/kg BW of each. Body weight gain,daily feed intake, feed conversion ratio (FCR), biochemical and haematologicalblood parameters, carcass characteristics, histological studies of ileum andspleen and economical efficiency were measured. Bee pollen administered alone or with propolis significantly(p < 0.01) the body weight gain and improved FCR in respect of the controlgroup. Inulin with MOS significantly improved just FCR than the control group.Bee pollen with propolis and MOS supplemented-groups resulted in significantlyhigher (7.96 and 8.41% respectively) white blood cells compared to the controlgroup. Plasma total cholesterol was significantly higher for theMOS group in respect of the control, bee pollen, inulin and inulin with MOSsupplemented-groups. Propolis resulted in significantly higher dressed carcasspercentage than the control group and higher carcass index than only bee pollenwith propolis supplemented-group. Bee pollen, in particular if in combination with propolis,could be used as a supplement in the growing rabbits during days 35–91 of agewith positive effects on growth rate and feed conversion ratio.
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