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GRASSLAND FERTILIZER PRACTICE AND HYPOMAGNESAEMIA
Author(s) -
Black W. J. M.,
Richards R. I. W. A.
Publication year - 1965
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1965.tb00405.x
Subject(s) - grazing , zoology , latin square , fertilizer , grassland , agronomy , biology , composition (language) , chemistry , food science , rumen , fermentation , linguistics , philosophy
The effects of N and K fertilizers on the yield and chemical composition of herbage and the serum Mg and Ca levels of grazing ruminants were investigated, using 64 lactaling ewes in a 4x4 Latin square arrangement of plots. During the 2‐year experiment there was no evidence that application of N alone has a depressing effect on the Mg content of either herbage or blood serum. The sheep grazing plots treated with combined N and K fertilizer had significantly (P<0·01) lower serum Mg levels during the early spring grazing period of 1961. It is suggested that individual variability within a group of animals may considerably influence the results of investigations of this kind.