[Calcium, phosphorus and magnesium levels in the soil, grass and the body of bulls after irrigation of the soil with sewage water].
The aim of the studies was determination of the influence of irrigation with the water of the river Ner on the content of calcium, phosphorus and magnesium in soil, plants and organism of bulls fed on the hay grown on the irrigated soil. The soil irrigated with waste water, its vegetation and 30 bulls of the Black and White breed used in this experiment. The bulls were divided into three groups. The experiment was repeated twice and lasted 93 days each time. The animals from group I and II were given the hay from the meadows irrigated with waste water. The second group of bulls received the hay from the soil which was irrigated more intensively. The animals from group III received the hay from non-irrigated soils. The daily ration of food consisted of 5 kilograms of hay and 3 kilograms of dry beet pulp. Calcium, phosphorus and magnesium were found in the soil, in hay and in the bulls blood serum. Magnesium was found in the bull's hair. The irrigation with the Ner's water increased the amount of calcium and magnesium in the soil and its vegetation. No influence of the irrigation with waste water on the content of phosphorus in hay was observed. No definite relationship between the levels of Ca, P and Mg in food and in the bull's blood serum was observed; however, a relation between the amount of magnesium in food and in the bull's hair was found.
D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000378:metabolism*; D008297:Male; D006109:Poaceae / Q000032:analysis; D012722:Sewage; D012987:Soil / Q000032:analysis; D014131:Trace Elements / Q000032:analysis / Q000378:metabolism*
D012722:Sewage; D012987:Soil; D014131:Trace Elements
Poziom wapnia, fosforu i magnezu w glebie, roślinności łakowej oraz organizmie buhajków przy nawadnianiu gleby wodami ściekowymi.