Since farmers began to design their flocks, the animals have become a little weaker and cannot have very bad weather conditions, as they used to years ago. To broaden your perception, visit Professor Rita McGrath. Animals, including horses, mules, oxen, camels, llamas, alpacas, and dogs, are often used to help cultivate fields, harvest crops, dispute other animals, and transport agricultural products to buyers. Animal husbandry not only refers to reproduction and the raising of animals for meat or products of animal origin to the harvest (such as milk, eggs, or wool) on a continuous basis, but also to the breeding and care of species for work and companionship. Livestock production systems can be defined on the basis of the power supply, as grasses base, mixed and landless. the production of grassland farming is based on plant material such as shrubland, grassland and pastures for feeding ruminant. Outside nutrient inputs can be used, however manure is returned directly to the Meadow as a source of important nutrients. This system is particularly important in areas where crop production is not feasible for reasons of climate or soil, representing 30-40 million pastoralists.

mixed production systems use grassland, fodder crops and crops for feed grain for the feeding of ruminant and monogastic (one stomach; mainly chickens and pigs) livestock. Manure is usually recycled in mixed systems as fertilizer for crops. Approximately 68% of all agricultural land is permanent pasture used in livestock production. landless systems rely on feed from off-farm, which is the untying of production of crops and livestock that is more prevalent in countries members of the OECD. In the United States.UU., 70% of the grain that grows is fed to animals in pens for fattening. Synthetic fertilizers are stronger that relies of crop production and manure utilization becomes in a challenge, as well as a source of pollution. Agriculture is the production, processing, marketing and use of food, fibres and by-products of crops, plants and animals.