SHORT COMMUNICATION
Blood profiles and health in Holstein cows fed diets
with varying cation-anion difference and calcium
supplementation
1
Institute of Dairy Science, MOE Key Laboratory of Molecular Animal Nutrition,
Zhejiang University,
Hangzhou 310029, P.R. China
2
College of Animal Science, Guizhou University,
Guiyang 550025, P.R. China
Publication date: 2007-09-17
Corresponding author
J. X. Liu
Institute of Dairy Science, MOE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310029, P.R. China
Institute of Dairy Science, MOE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310029, P.R. China
J. Anim. Feed Sci. 2007;16(Suppl. 2):376-381
KEYWORDS
ABSTRACT
Three blocks each of twelve Holstein cows beginning 21 days prepartum were randomly allocated
to one of three treatments with varying dietary cation-anion difference (DCAD, mEq/kgDM) at +150
(HD), -100 (LD), and -100 plus calcium (LDCA) to investigate fluid acid-base balance, serum Ca,
health status, and lactation performance. Feeding LD diets induced mild metabolic acidosis. Serum Ca
in diet LD was higher (P<0.05) than that in other two diets. Health disorder was lower in the two LD
diets. Milk yield was unaffected (P<0.05) by dietary treatments. It is indicated that negative DCAD
was beneficial for blood calcium homeostasis and health status in Holstein periparturient cows.
CITATIONS (2):
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