FORMULA SHELF
3 of 370
The arithmetic behind the work: what to measure, what to type in, and what the answer comes out as. Every formula says what the symbols mean and gives a worked example, so you can check it against a job you have already done.
SHELVES
Livestock
2 formulas
The price of your stock depends on it. A heavy animal with a poor dressing percentage is not worth much more than a lighter one, and the killing sheet tells you which you have.
A 60 kg lamb with a 26 kg carcase = 43% dressing.
Two different questions. Conception tells you about the bull and the condition score; calving rate tells you about the calving shed and the hard cases.
90 cows served, 80 in calf, 78 calves born: 89% conception, 87% calving rate.
Energy
1 formulas
For sizing a solar array for the electric fence, the lights or a small freezer. Multiply the panel area by the irradiance you can count on, not the best case.
2 m2 of panel at 800 W/m2 and 20% gives 320 W.
SOURCES & PROVENANCE
1 listed
This page is an AI-organised index. The label means the grouping and cross-links were compiled with AI; the information itself comes from the public-domain books, reports and manuals listed below. Open any source to read the local copy or follow the link to the original publication.