International Science Community Association Research Journal of Mathematical and Statestical Sciences 14 3 2026 09 12 On Model of Weight Gain of Farm Animals 1 3 EN Pankratov E.L. 1 Nizhny Novgorod State Agrotechnical University, 97 Gagarin Avenue, Nizhny Novgorod, 603950, Russia > Research Paper 2026 4 28 2026 09 12 In this paper we introduce a model to estimate increasing of weight of farm animals in depends on several parameters. We introduce an analytical approach for analysis of the introduce model with account of changing of the above parameters in space and time, as well as taking into account the nonlinearity of the considered process. We consider the possibility to accelerate and decelerate of the fattening of farm animals. Copyright@ International Science Community Association