The effect of a product with three gluconeogenic precursors during the transition period on blood metabolites and milk yield in Chilean Holstein cattle
The objective of this study was to determine the effect of a product containing calcium propionate 70 g/kg, propylene glycol 95 g/kg and glycerol 330 g/kg on blood β-hydroxy butyrate, non-esterified fatty acids and milk yield in Chilean Holstein cows. Cows were housed in a free-stall with head-locks...
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| Published in: | Journal of Applied Animal Research Vol. 46; no. 1; pp. 613 - 617 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Taylor & Francis
01-01-2018
Taylor & Francis Group |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The objective of this study was to determine the effect of a product containing calcium propionate 70 g/kg, propylene glycol 95 g/kg and glycerol 330 g/kg on blood β-hydroxy butyrate, non-esterified fatty acids and milk yield in Chilean Holstein cows. Cows were housed in a free-stall with head-locks, milked 3× and fed a total mixed ration. At 21 days before expected parturition 40 cows were randomly assigned to a control group (n = 20) and a treated group (n = 20). Controls received the farm diet. Treated cows received 300 g of the supplement, top dressed on the same diet, during the morning until 15 cows per group accomplished 30 days pp. A blood sample was obtained at calving for non-esterified fatty acids determination and at 7, 14 and 21 days pp for β-hydroxy butyrate determination. Milk yield up to 60 days pp was higher (2 kg/day) in the treated than control group. Non-esterified fatty acids were higher in the control than treated group. The control group at 14 days pp had a lower concentration of β-hydroxy butyrate than the treated group. In conclusion, a product with three gluconeogenic precursors improved milk yield and maintained a moderated energy status during the transition period of Chilean dairy cattle. |
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| ISSN: | 0971-2119 0974-1844 |
| DOI: | 10.1080/09712119.2017.1369419 |