Evaluation of the protective effect of probiotics given to dairy cows during a lactic acidosis challenge.
In: Journal of Animal Science, Jg. 84 (2006-08-02), S. 233-233
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Zugriff:
Sub-acute rumen acidosis can be extremely costly when it occurs in dairy cows. The use of probiotic supplements to stabilize the rumen during the transition period could attenuate the symptoms of this metabolic disorder. Four ruminally-flstulated Holstein dairy cows in mid-lactation were assigned to the following experimental treatments in a 4 x 4 Latin Square design: 1) control; 2) 0.6g per head, per day of a fermentation extract of Aspergillus oryzae (AO-0.6); 3) 3g per head, per day of AO (AO-3.0); 4) a probiotic combination consisting of Enterococcus faecium and Saccharomyces cerevisiae (ES) at a level of 1 x 10 5 cfu/ml of rumen fluid. Each period of the Latin Square consisted of 3 weeks of adaptation to the respective treatments followed by 4 days of lactic acidosis challenge and 3 days of resting period. During the week of induction of sub-acute ruminal acidosis (SARA), 30% of ad libitum intake of the TMR was replaced by pellets containing 50% ground wheat and 50% ground barley (WBP). Ruminal pH was recorded continuously using an indwelling pH probe, over a 24 h period for each week of the adaptation period and continuously over the 4 days of SARA induction. Average ruminal pH was lower during SARA than during the weeks of adaptation to the different treatments (5.6 vs 6.1) (P < 0.0001). The difference in average pH recorded during the adaptation weeks and the week of SARA was greater when animals were controls (0.73) than when they received AO-0.6, AO-3.0 or ES (0.32, 0.51, 0.24, respectively) (P = 0.002). The ES treatment tended to sustain a higher pH during the SARA period compared to the control (5.8 vs 5.4, P = 0.06). Accordingly, minimum pH recorded during SARA was higher when animals were on ES than control (5.0 vs 4.4, P = 0.01). Adding ES or AO-0.6 did not affect milk production compared to the control (average milk production = 26.6 kg per day) whereas milk production decreased (23.4 kg per day) (P = 0.04) when cows received AO-3.0. [ABSTRACT FROM AUTHOR]
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Titel: |
Evaluation of the protective effect of probiotics given to dairy cows during a lactic acidosis challenge.
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Autor/in / Beteiligte Person: | Chiquette, J. |
Zeitschrift: | Journal of Animal Science, Jg. 84 (2006-08-02), S. 233-233 |
Veröffentlichung: | 2006 |
Medientyp: | academicJournal |
ISSN: | 0021-8812 (print) |
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