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Lets say you have a herd of cattle, which are of mixed breeds and different sizes, calculating the feed intake base on each type of animals will be stressfull, time consuming and unrealistic so a common denominator is used to make work easier its like an average weight.

Famers in arid North Australia tried to keep a high milk producing freshian cow because he wanted more, but freshian are not adapted to the heat stress environment they had problems with mastitis and tropical diseases. The solution was a cross between freshian & Sahilwa



2. Find out the nutrient content of the feed stuff. Estimates are available in the internet but always take a small sample to laboratory for confirmation that means if you prepared 500kg of feed send 1/2 a kg sample to a lab , check in net for accredited testing labs .
One step at a time.
The ruminant have 2 abilities that monogastric animals (PIG,MAN) don't have, that is Ability to:

Don't bother to calculate animal feed rations if you never bothered to understand the digestive system of the animal. Understanding the digestive system of a cow is crucial to understand why the rations are the way they are, so that you don't compromise on quality or kill you cow
40,000 sheep & goats worth 2million USD in one shipment to Oman with a possibility of a market of 500,000 cattle not forgetting we have a deficit in Kenya that we still have to meet . i am happy because i have been studying austarlia live export business and they are the best .
Its important to learn the Art of selecting the Right animal fit for your purpose. if it milk then goat breeds like Saanen, Toggenburg, nubian & Alpine are best, if its for slaughter then borana/somali goats & boer/savanna/Kalahari red are best. But start with native breeds.
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