Manston R, Sansom B F, Allen W M, Prosser H J, Groffman D M, Brant P J, Wilson A D
J Vet Pharmacol Ther. 1985 Dec;8(4):368-73. doi: 10.1111/j.1365-2885.1985.tb00969.x.
Acid-base reaction cements were produced by reacting copper oxide with phosphoric acid. When placed in the reticulo-rumen of cattle and sheep these cements released copper into the digestive tract for at least 3 months at a rate sufficient to provide the animals' requirements for copper. Lambs given a pellet of cement at 3 months of age had significantly greater concentrations of copper in their livers than similar untreated animals when slaughtered 3-4 months later. It was shown that salts of cobalt and selenium could be incorporated into the cement to provide additional supplementation with these two elements.
酸碱反应型水泥是通过氧化铜与磷酸反应制成的。将这些水泥置于牛羊的瘤胃中时，它们会以足以满足动物对铜需求的速度向消化道释放铜，至少持续3个月。3月龄时投喂一粒水泥丸的羔羊，在3 - 4个月后屠宰时，其肝脏中的铜浓度显著高于未处理的同类动物。研究表明，可以将钴和硒的盐类加入水泥中，以额外补充这两种元素。
