Harvesting Habits - animal systems design

Using Tomas Remiarz's "Web of Principles" framework, I consider the best approach to integrating domesticated animals into my smallholding system. The ambition is to work with animals in the system without having an aim of harvesting those animals to eat*. The animals are instead kept on the land to live good lives, behaving as their habits demand, and the design aims to "harvest" those natural habits to the advantage of the system.  The animals reduce the need for certain activities and in some cases the use of certain types of machinery that use fossil fuels and/or carry significant embodied energy. At the end of the design I consider in some depth the benefits and opportunities around Tomas Remiarz's Web of Principles framework, which is an excellent new framework for permaculture design. (*This is not a vegan design but may offer an interesting place between vegan systems and systems for livestock production. Animals are not kept with the intention of eating them but are kept for the intention of benefiting from their habits. They will live out long lives living in harmony with their natural habits. However we will breed some animals (particularly birds) to keep numbers up and this may lead to production of more males than are needed. These animals may be eaten, but animals are not kept, nor bred, with that intention.)