The effect of Emblica officianalis and Spirulina platensis was studied in New Zealand White rabbits. Weaned rabbits of both sex were allocated to three different feeding treatments via T 1 (Control), T 2 (supplemented with 2% Emblica officianalis) and T 3 (supplemented with 5% Sprulina platensis) in addition to ad lib. berseem fodder. The concentrate diets formulated were iso-nitrogenous and iso-caloric. The final body weight, weight gain and average daily weight gain of rabbits in all the groups followed the same trend. While, T 1 and T 2 were found to have better FCR than T 3 supplemented feeding treatments, there were no significant changes in the serum biochemical indices, only the serum globulin value was significantly (P<0.05) lower (2.41 vs. 3.55, 3.10 g/dl) and albumin value was found significantly higher (4.52 vs. 3.27, 3.56 g/dl) in the groups fed spirulina supplemented diets as compared to groups fed with non supplemented diets. Amla supplementation had no effect on the serum biochemistry indices.

At 13 weeks of age, rabbits raised under cage system of housing with 2% yeast supplementation in their concentrate (T^) had significantly higher total weight gain than the pen system and without yeast supplementation (T3). The rabbits reared under pen system with (T^) or without yeast supplementation (T3) had significantly higher portion of fore part hind part and lower portion of intermediate part than the rabbits reared under cage system with (T^) or without yeast supplementation (Tj).

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Buffalo (Bubalus bubalis) play an important role as a milk animals in the Indian national economy. India has nearly 57% of the world's buffaloes which contribute 56% of the total milk produced in India, i.e., 86 million tons per annum (FAO 2004). Economic rearing of replacement stock is a prerequisite for successful dairy farming. Buffalo traditionally are considered slow-growing animals, a trait which has a direct effect on early maturity and age of first calving. Low growth rate in young buffalo calves is by far the most important factor contributing to late maturity. The most efficient system of calf-rearing is one that gives higher body weight gain and low cost of feeding. Any management package that can induce early maturity without any detrimental effect on subsequent health of the calf will have a profound economic contribution.

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