Answer:
Livestock populations provide people with a variety of products and services, including meat, milk, eggs, fibre and draught power, in a wide range of environments. This diversity of function is only possible because of the diversity of their genetic make-up.
The genetic variation within livestock populations also provides the raw material both for evolution through natural selection in response to changing conditions and for human-managed genetic improvement programmes. It is vital both to efforts to increase production and to the adaption of livestock populations to challenges such as climate change, emerging diseases and pressures on feed and water resources.
Animal genetics is one of the pillars of livestock development (alongside animal health, animal nutrition and husbandry issues such as housing). It is a broad field, ranging from characterization to conservation to genetic improvement, and involves actions at local, national, regional and global scales.
Explanation:
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