Effect of Moringa, Subabul and Guava Leaves Either Sole or in Combination on Nutrient Utilization, Nitrogen Balance of Ram Lambs

Background: The use of alternate feed resources like tree leaves is key element in addressing the problems derived from climate change and food shortages that demand establishment of sustainable feeding system for ruminants. Methods: A study was conducted on 36 Nellore cross ram lambs (6-7 months; 18.48±0.29 kg BW) randomly allotted to six dietary treatments to evaluate the effect of 20% dietary inclusion of moringa (MOR) subabul (SBL) and guava (GVL) leaves either sole or in combination (MS and MG mixture incorporated at 60:40 and 40:60, respectively) in concentrate mixture on nutrient utilization, plane of nutrition and nitrogen balance. The control group concentrate mixture contained maize, de-oiled rice bran, cotton seed cake and soybean meal as major ingredients and in the 5 experimental concentrate mixtures, de-oiled rice bran and soybean meal were partially replaced with moringa (MOR20), subabul (SBL20), guava (GVL20), moringa and subabul mixture (MS20) and moringa and guava mixture (MG20), by including them at 20%. Animals were fed with respective concentrate mixtures to meet about 80% of protein requirements and sorghum stover was offered ad libitum to meet the nutrient requirements of lambs for maintenance and growth as per ICAR (2013). Result: Dietary inclusion of tree leaves had no effect on the intake of various nutrients viz. DM, OM, CP, EE, CF, NFE, NDF,ADF, Hemicellulose and cellulose and were comparable (P greater than 0.05) among the six dietary groups. The crude protein and crude fibre digestibility improved (P less than 0.01) in tree leaves included diets compared to control, while ether extract (EE) digestibility was lower (P less than 0.01) in tree leaves included diets compared to CON. The DCP, TDN (%) and ME content was higher (P less than 0.05) in MS20, MG20 and MOR20 groups compared to CON. The N intake (g/d), excretion through faeces and urine (g/d), total N excretion and total N balance (g/d) was comparable among the different dietary groups.