Energy Deficiency

25.5.2 Energy Deficiency Nursing mothers will become energy deficient (and thin) if they do not receive more food while they are lactating, particularly food rich in energy. Sows that become energy deficient are often infertile for several months after weaning their piglets. Cows that don’t get enough energy will not become pregnant until after their calves are weaned.

In young animals, protein and energy deficiencies often occur together, and become worse with parasite problems. It may be difficult to tell which is the main problem. However, experience shows that if a grass-eating animal is fed enough tender, green grass (and given medicine for parasites regularly), it often improves rapidly.