Reducing the somatic cell count of bovine milk with dietary NaCl supplementation
1996
Arney, D.R. | Kaert, O. | Philips, C.J.C.
Analysis of the bacterial populations expressed in the milk of the trial cows was not statistically significant, partly because of the small sample size (samples were taken on one occasion only, a sample size of 36). However, possible trends were observed. Total bacterial counts and lactophillic counts were higher in the control cows and lowest of all in the high Na treatment group, while propionophillic bacteria counts were lowest in the control group and higher in both of the treatment groups. While these results were significant, they do not suggest a trend in the effect of NaCl in the diet on different bacterial populations. A further trial is presently being conducted to confirm any such effect and identify more clearly which bacterial species are primarily affected. This would be important in clarifying the identification of the mechanism by which dietary salt reduces the somatic cell count of milk in dairy cows, and alos identify which mastitis pathogens can be arrested by this prophylactic treatment
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