The experiment was conducted in Fafan Research Center, 605 km far from Addis Ababa, 45 km west of Jijiga, lying between 9˚24'N latitude, 42˚6'E longitude, where the average annual rainfall, temperature and altitude ranges 200 - 600 mm, 24 - 450 C and 200 - 1600 m.a.s.l. respectively [13] . The region experiences erratic and insufficient rainfall, making it unsuitable for regular crop farming. It is dominated by extensive rangelands, with the population primarily engaged in pastoralism and agro-pastoralism. Communities often migrate in search of pasture and water for their livestock and themselves. The region has surface area of approximately 375,000 square kilometers which divide the area into arid and semi-arid agro ecological zone.

Fresh mature leaves of Moringa stenopetala and pigeon pea were manually harvested. The leaves were air-dried under shade by spreading on clean plastic sheets for 72 hours. They were turned several times to facilitate the drying process. The grass was mowed at a frequency of 14 days, pre-dried in the sun for 24 hours by spreading on a concrete floor, and turned several times, thereafter air-dried in a shaded place and kept until use.

Preparation and proportion of feed supplementation levels are presented in Table 1 . Fresh moringa and pigeon pea leaves were collected, defoliated, and dried under shade until they are crispy to the touch while retaining their greenish coloration. The leaves were then milled to obtain a product herein referred to as Moringa stenopetala and pigeon pea leaf meal which were stored in sacks until needed for inclusion in the concentrate diet. The two feeds of pigeon pea (Pp) and Moringa stenopetala (Ms) feed were used as experimental diets and formulated using 0%, 5%, and 10% inclusion levels of Moringa stenopetala and pigeon pea leaf meal. The goats were freely grazing during the daytime, and the experimental diets were served as supplements in the evening.

Fifteen male yearling indigenous short-eared Somali goat breed with the initial weight of 15.2 ± 0.30 kg was used in this study. The goats were purchased from local markets in Dhegahle kebele and transported to the Golahajo research site. All the groups of animals were ear-tagged and treated against internal and external parasites before the beginning of the experiment. The experimental animals were quarantined for 3 weeks being vaccinated for diseases such as pest des petitis ruminants (PPR), ovine pasteurellosis, and goat pox, and anthrax. After fifteen days of the adaptation period, the animals were randomly allocated to three treatment groups of five animals each in a completely randomized design (CRD). The goats were provided with individual feed and water troughs, and clean water was available all the time.

T = Treatments, ^aMoringa stenopetala, ^bPigeon pea.

Body weights were recorded at the beginning of the trial and every 2 weeks. Goats were weighed in the morning hours after overnight fasting by using hanging scale. Average weight gains (ADG) were calculated as the difference between final body weight and initial body weight divided by the number of feeding days. Feed conversion efficiency was calculated by dividing ADG by daily total dry matter intake.

The two types of feed leaves were assessed for the value of dry matter (DM), crude protein (CP), crude fat, calcium, magnesium, potassium, zinc, copper, iron, manganese, and phosphorus using the procedures of the Association of Official Agricultural Chemists [14] . Neutral detergent fibre (NDF), acid detergent fibre (ADF), acid detergent lignin (ADL), and acid detergent cellulose (ADC) were determined according to Van Soest and Robertson procedure [15] .

Data was analyzed using general linear model (GLM) procedure of SAS computer package Version 9.0 [16] . Mean comparisons were determined by using Duncan multiple range test, and significance at P < 0.05. The model used for the data analysis was:

$Y_{ij}=\mu +T_i+B_j+e_{ij}$,

Where: Y_ij is the response variable;

μ is the overall mean;

T_i is the treatment effect;

B_j is the block effect;

e_ij is the random error.

The effect of Moringa stenopetala and pigeon pea leaves on body weight gain of Somali male goat breed intake was shown in Table 2 . The average initial body weight of selected male goats was 18.82 ± 0.37, 18.8 ± 0.37 and 17.8 ± 0.37 kg as T1, T2 and T3, respectively. The final weights gain of goats on experimental group of treatment one and two was shown 26.63 ± 0.49 and 26.32 ± 0.49 with average weight gains of 7.50 ± 0.37 and 7.82 ± 0.37 kg, respectively. The control group of the final weight gain was shown 24.06 ± 0.49 kg with average weight gains of 6.26 ± 0.37 kg. Hence, the present study revealed a significantly higher FWG in experimental group (T1 and T2) than the control group (T3) (P < 0.05). However, there was no significant difference between the final weight gain of goat supplemented on Moringa stenopetala (T1) and pigeon pea levels (T2) (P > 0.05) ( Table 2 ). On the other hand, the average daily weight gains for goats supplemented with Moringa stenopetala, pigeon pea leaves and the control group were obtained, 0.042 ± 0.002, 0.043 ± 0.002 and 0.035 ± 0.002 g/day, respectively. The total weight gains of the animal supplemented with different levels of ration in general followed the trend of the daily weight gains. The highest total weight gain per animal was received for the treatment group two, which was supplemented with 2 kg of pigeon pea, while the control group exhibited the lowest weight gain. Considering the weight gain over the entire experiment there was a significant difference among the treatment group and the control group with regard to overall average live weight gains, average total weight gains and final weight gain (P < 0.05). The present findings are in lined with previous works of [17] [18] and [19] who were reported that feeding of moringa leaves had significantly increased the body weight gain in Sudan Nubian goat kids.

Mean values in a column having different superscripts differ significantly from each other; *P < 0.05; SEM: Standard error of mean, N.S.: Non-significant; T: Treatments.

The chemical composition of Moringa stenopetala and pigeon pea leaves used in this study are presented in Table 3 . Moringa stenopetala leaves contained dry matter (89.9%), ash (12.2%), NDF (26.5%), crude protein (26.7%), ADF (16.9%) ADL (6.9%), the crude protein content of moringa foliage used in the study was in line with the fining of [20] (29.7%, 25.95% and 22.6%) obtained by [21] [22] and [23] respectively, but higher than the values (19.5% and 19.3% in DM) reported by [24] and [25] respectively. The variations in nutritive value of moringa foliage could be due to the age of harvest, soil type and fertility, proportion of leaf and stem and the agro-ecological zone where trees are growing. On the other hand, pigeon pea contained Dry matter (92.1%), NDF (50.6%), crude protein (32.9%), ADF (30.8%), ADL (12.1%) is higher than the dry matter (89.9%), NDF (26.5%), crude protein (26.7%), ADF (16.9%) ADL (6.9%) of Moringa stenopetala.

DM = Dray matter; CP = Crude protein; NDF = Neutral detergent fiber; ADF = Acid detergent fiber; ADL= Acid detergent lignin; Ash= Total mineral content of forage.