As industrialization and urbanization have progressed, animal husbandry has also developed towards intensive rearing. Farmers invest large amounts of capital and technology, in the expectation of greater returns and yields. Furthermore, in today's world producers, distributors and consumers have little to do with each other. Divorced from the animals they eat and use, people regard them with indifference.
隨著工業化、都市化的發展，畜牧業也走向集約飼養，業者投入大量資金、技術，期望得到更多效益、產值，加上現代商業機制中，生產者、經營者與消費者互不相干，人對自己所食、用的動物也由隔閡而漠視。