The correct answer is: All of the above
Cultivated grasses, crop residues, and forest grazing are all major sources of fodder for livestock in Sikkim.
Cultivated grasses are grown specifically for livestock feed. They are a good source of protein, carbohydrates, and fiber. Some common cultivated grasses used for livestock feed in Sikkim include Napier grass, elephant grass, and Rhodes grass.
Crop residues are the leftover parts of crops after they have been harvested. They can be used as fodder for livestock. Some common crop residues used for livestock feed in Sikkim include rice straw, wheat straw, and maize stover.
Forest grazing is the practice of allowing livestock to graze in forests. Forests provide a variety of plants that can be used as fodder for livestock. Some common plants used for livestock feed in Sikkim forests include bamboo, grasses, and shrubs.
All of these sources of fodder are important for the livestock industry in Sikkim. They provide a nutritious diet for livestock and help to keep them healthy.