scholarly journals Milk somatic cell count, lactate dehydrogenase activity, and immunoglobulin G concentration associated with mastitis caused by different pathogens: A field study

2017 ◽  
Vol 159 (5) ◽  
pp. 283-290 ◽  
Author(s):  
L Hernández-Castellano ◽  
S Wall ◽  
R Stephan ◽  
S Corti ◽  
R Bruckmaier
Keyword(s):  
Lactate Dehydrogenase ◽  
Somatic Cell ◽  
Cell Count ◽  
Field Study ◽  
Dehydrogenase Activity ◽  
Immunoglobulin G ◽  
Somatic Cell Count ◽  
Lactate Dehydrogenase Activity

An immunoglobulin G inhibiting lactate dehydrogenase activity

1986 ◽  
Vol 159 (1) ◽  
pp. 17-25 ◽  
Author(s):  
Tetsuo Hirano ◽  
Hiroko Matsuzaki ◽  
Masakazu Miura ◽  
Eriko Kojima ◽  
Noboru Tamura ◽  
...  
Keyword(s):  
Lactate Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Immunoglobulin G ◽  
Lactate Dehydrogenase Activity

scholarly journals Changes in milk L-lactate, lactate dehydrogenase, serum albumin, and IgG during milk ejection and their association with somatic cell count

2014 ◽  
Vol 82 (2) ◽  
pp. 129-134 ◽  
Author(s):  
Mirjam Lehmann ◽  
Samantha K Wall ◽  
Olga Wellnitz ◽  
Rupert M Bruckmaier
Keyword(s):  
Lactate Dehydrogenase ◽  
Serum Albumin ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Cleaning Process ◽  
Milk Ejection ◽  
Milk Samples ◽  
Significant Difference ◽  
Automatic Milking Systems

In both conventional and automatic milking systems (AMS), sensitive and reliable mastitis detection is important for profitable milk production. Mastitis detection parameters must be able to detect mastitis when the somatic cell count (SCC) is only slightly elevated. Owing to the pre-milking teat cleaning process in AMS, sampling cannot take place before the occurrence of alveolar milk ejection and importantly, this can affect the ability of parameters to detect mastitis. The aim of the present study was to examine the effect of alveolar milk ejection on l-lactate, lactate dehydrogenase (LDH), serum albumin (SA) and immunoglobulin G (IgG) compared with SCC, a commonly used indicator of mastitis. In this experiment, milk samples were collected every 20 s from one quarter during a 120-s manual teat stimulation in ten cows. Samples were analysed for SCC, l-lactate, LDH, SA and IgG. Quarters were grouped by low (<5·0 log10 cells/ml), mid (5·0–5·7 log10 cells/ml), and high (>5·7 log10 cells/ml) SCC using the sample at t=0 s. Neither l-lactate nor LDH could statistically differentiate between low and mid-SCC quarters, but there were a significant difference in levels between the high-SCC quarters and low and mid-SCC quarters. SA could not differentiate between the low and mid-SCC quarters, but the SA levels for the high SCC quarters remained statistically different compared with low and mid-SCC quarters throughout the experiment. IgG could statistically differentiate between low and mid-SCC, although the high-SCC quarters were not statistically different from the mid-SCC quarters after 60 s. In the high-SCC quarters, a decrease was shown in all parameters during milk ejection, after t=60 s. In conclusion, alveolar milk ejection reduces the effectiveness of detection parameters when compared with SCC. With the exception of IgG, the ability of other tested parameters was not satisfactory to differentiate between quarters with low to mid-SCC levels

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