few sentences need to be rewrite or correct the grammatical problem

1. The major factors which are included in the low-stress handling are the reduction of stressors, which can be of any form as these inculcate fear in the cattle which effects the control mechanism of the cow. The disturbance in control mechanisms yields adverse results such that the cows are mostly underweight, there is a lower milk yield and low conception rates in addition to the sustained diseases.

2. When the cattle are treated aggressively, a lot of problems occur including the bruising of the animals while transferring them, which affects their health which ultimately impacts their productivity.