Neem (Azadirachta indica A. Juss) leaves as growth promoter in lambs’ diets

Abstract

Objective: To evaluate the dietary inclusion of neem leaves on the productive and biochemical performance of fattening lambs. Design/methodology: Forty male lambs were assigned according to a completely randomized design. Treatments consisted of dietary inclusion of neem at 0.0, 2.5, 5.0, and 7.5 g kg^-1 dry matter by 35 days.  Results: The inclusion of neem leaf in the diet did not affect productive performance (P>0.05), while protein and energy metabolites were modified (P≤0.05). Study limitations/implications: The bioactive compounds present in neem modified the metabolites related to protein and energy metabolism, although these changes did not reflect improvements in productive performance. Conclusions: The inclusion of dietary neem (2.5-7.5 g kg^-1) has no effect on the productive performance, although it modifies some energy and protein metabolites.