Influence of Dietary Sodium Bicarbonate on the Potassium Metabolism of Growing Dairy Calves
| Autor: | D.M. Hopkins, W.B. Tucker, J.F. Hogue, J.A. Jackson |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Male
medicine.medical_specialty Bicarbonate Urinary system Potassium Sodium chemistry.chemical_element Urine Weight Gain Excretion Eating Random Allocation chemistry.chemical_compound Animal science Chlorides Internal medicine Genetics medicine Animals Metabolism Hydrogen-Ion Concentration Breed Bicarbonates Sodium Bicarbonate Endocrinology chemistry Calcium Cattle Female Animal Science and Zoology Food Science |
| Zdroj: | Journal of Dairy Science. 74:2296-2302 |
| ISSN: | 0022-0302 |
| DOI: | 10.3168/jds.s0022-0302(91)78402-6 |
| Popis: | We evaluated the influence of supplemental dietary NaHCO3 on K metabolism of young dairy calves. Thirty-two Holstein and Jersey male and female calves were blocked at 56 to 70 d after birth according to breed, sex, and age and assigned randomly to a 2 x 2 factorial arrangement of dietary treatments for 8 wk: .4% K with 0% NaHCO3, .4% K with 2% NaHCO3, .6% K with 0% NaHCO3, and .6% K with 2% NaHCO3. Feed intake was not affected by dietary KCl or NaHCO3 supplementation, but average daily gain increased with increased K and tended to be reduced by dietary NaHCO3. Plasma K was elevated by increased dietary K but generally was unaffected by NaHCO3. Urinary Ca excretion appeared to be reduced by NaHCO3; urine pH increased with supplemental NaHCO3. Results indicate 1) the K requirement of the growing calf is between .40 and .55% of diet DM, 2) because urinary K excretion was elevated by dietary NaHCO3, the K requirement may be increased when the diet is supplemented with NaHCO3, and 3) average daily gain and plasma K are sensitive indicators of dietary K in the growing calf. |
| Databáze: | OpenAIRE |
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