Effect of supplementing glucose in drinking water on the energy and nitrogen status of the transition dairy cow
| Autor: | K. E. Leslie, Brian W. McBride, Vern R Osborne |
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| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Canadian Journal of Animal Science. 82:427-433 |
| ISSN: | 1918-1825 0008-3984 |
| Popis: | The objective of this experiment was to examine the effects of supplementing the drinking water of transition dairy cattle with glucose on the energy and nitrogen status of the cow. Twenty-four multiparous Holstein dairy cows were randomly assigned to one of three treatments for an experimental period that extended from -7 to 21 d of lactation. The treatments included a 0% (control), 1% (10 g L-1) and 2% (20 g L-1) glucose solution metered into the drinking water of dairy cows. Water and dry matter intake (DMI) were not affected by treatment. Glucose supplementation in the drinking water significantly reduced the rumen fluid ammonia and serum urea concentrations. No differences were seen in serum concentrations of glucose, β-hydroxybutyrate (BHBA), non-esterified fatty acids (NEFA), and the energy corrected milk (ECM) yield. The calculated NE balance was not affected by glucose supplementation. The results of this trial demonstrate that glucose supplemented into the drinking water of transition cows improves the nitrogen status of the cow, but does not alter the NEL balance during the periparturient period. Key words: Water supplementation, glucose, transition cow, serum urea |
| Databáze: | OpenAIRE |
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