**ABSTRACT**

A total of 60 Russ 2011 two weeks old broiler chicks with an average weight of 215.33__+__4.55g were fed with diets compounded with sweet potato leaves (SPL) for 56 days. The diets consist of T_{1} (0% SPL), T_{2} (5% SPL), T_{3} (10% SPL) and T_{4} (15% SPL). The proximate composition of the SPL was determined in the laboratory. The birds were randomly allocated to four treatments using completely randomized design (CRD). Each treatment was subdivided into three replicates of five chicks each. At the end of the experiment, all data collected were subjected to one way analysis of variance and difference in means was separated using Duncanâ€™s New Multiple Range Test. The results showed no significant difference (p>0.05) in the average body weight gain, feed intake, feed conversion ratio (FCR) and protein efficiency ratio (PER). However, birds on T_{2} (32.77g) had the best daily body weight gain followed by T_{4} (30.36g), T_{3} (30.06g) and T_{1} (29.21g) while in terms of daily feed intake, T_{4} (98.20g) consumed most followed by T_{2} (98.17g) and T_{3} (96.59g) whereas, T_{1} (92.38g) consumed the least feed. The birds on T_{2} (3.00) demonstrated the best FCR followed by T_{1} (3.16), T3 (3.21) and T_{4} (3.23). Also T_{1} (1.59) showed the best PER closely followed by T_{1} (1.53), T_{3} (1.46) and T_{4} (1.43). There was, however, a significant difference (p<0.05) in Hb concentration when T_{2} (11.62g/dl) and T_{3} (12.48g/dl) were compared with T_{1} (10.34g/dl) and T_{4} (10.21g/dl). In the PCV, a statistical difference (p<0.05) also was observed between T1 (24.73%) and others (T_{2} (28.18%), T_{3} (28.97%)and T_{4} (27.14%)) while similar trend (p<0.05) was seen in the RBC count when T_{4} (9.72x10^{6}/ul) was compared with T_{1} (10.21 x10^{6}/ul), T_{2} (10.81x10^{6}/ul) and T_{3} (11.43x10^{6}/ul) and no significant difference (p>0.05) among all the treatments with respect to WBC (T_{1} (21.23x10^{3}/ul), T_{2} (19.18x10^{3}/ul), T_{3} (21.26x10^{3}/ul) and T_{4} (22.63x10^{3}/ul)). Although the haematological parameters fell within normal physiological ranges, there was a gradual increase in these values as the inclusion levels progressed till T_{3} (10% inclusion) and then a decrease. It is therefore recommended that inclusion of SPL up to 5% in the diet of broilers is good for enhanced body weight gain, FCR and PER and up to 10% for enhanced haematological parameters.

**References**

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