The objectives of this study was to select nonlinear regression model of relationship between body parameters and live weight of swamp buffaloes for live weight estimation. The animals of Department of Animal Science, Faculty of Agriculture at Kampaeng Saen, Kasetsart University, Kampaeng Saen Campus were used in this study. A total of 172 animals were 41 male and 131 female 0 to 25 months old of swamp buffaloes. Parameters of body measurements were shoulder height (SH), hip height (HH), shoulder width (SW), hip width (HW), body length (BL) and hearth girth (HG) were measured in centimeters during weighting. Three of nonlinear regression models including exponential, polynomial quadratic and power models were analyzed relationship between body parameters and live weight in each body parameter. The results revealed that power model gave the best fit model of HG and live weight relationship with highest R sup(2) (0.9662, 0.9748 and 0.9702) in male, female and both sex of swamp buffaloes, respectively. In addition, percentage error and accuracy of 3 models were investigated between HG and live weight of swamp buffaloes (n=492). The result revealed that polynomial quadratic model showed highly accuracy (98.92 percent) between actual live weight and calculated weight from the equation of y = 0.0233x**(2) -2.9263x+129.81 with R sup(2) value of 0.9678, when y = estimated live weight (kg), x = heart girth (cm). In conclusion, this model provides a highly reliable and accurate method for estimating weights of swamp buffaloes using a single heart girth measurement which can be easily obtained with a girth tape in the field work.

A study was conducted to determine the effect of De-oiled mahua seed cake (DMSC) on the performance (milk yield, fat percent, nutrient intake, net income and body weight change) of lactating buffaloes (Bubalus bubalis) in Mandla district of Chhattisgarh Hills Region of Central India. Eighteen lactating buffaloes were selected nd divided into three groups (T1, T2 and T3) on the basis of body weight, milk yield, parity and stage of lactation, containing 0, 5 and 10 percent DMSC in replacement of conventional de-oiled seed cakes in the concentrate mixture. The milk yield (kg/day), fat percent, 6 percent FCM yield (kg), DM intake (kg/day) and body weight gain (g/day) was comparable among the groups. However, net income (Rs./animal/day) and B:C ratio was higher in the groups containing DMSC. Thus, from the experiment it was concluded that conventional cake can be replaced with 10 percent DMSC economically without any adverse affect on milk yield, fat percent, nutrient intake and body weight.