Effects of dietary boron in rats fed a vitamin D-deficient diet.

Although boron has long been known to be a required nutrient for plants, it was not until recently that there was any suggestion of a nutritional requirement for animals and humans. Addition of boron to the diet of vitamin D-deficient chicks indicated that boron may play a role in animal nutrition. Studies with rats have demonstrated that supplemental dietary boron has most marked effects when the diet is deficient in known nutrients.

Low-protein, crystalline amino acid-supplemented, sorghum-soybean meal diets for the 10- to 20-kilogram pig.

Five randomized block design experiments were conducted to determine the limiting amino acids (or other nutrients) in low-CP (12%) sorghum-soybean meal (S-SBM) diets for the 10- to 20-kg pig. Average initial weights were 10.7, 10.