**4.3 Extensive animal farming**

It is also known as a low-intensity or low-input farming system. In extensive farming systems, rearing is carried out on open areas of the lands, that is, pastures, meadows, and mountains so that animals can get maximum benefit from the natural products. The farming system is applicable to the animals who are intended to be adapted to the field [32]. This system supports the preservation of the ecological unit. In this type of farming, external resources like pesticides and fertilizers are used in low quantity [33].
