Population Dynamics of Bulk Milk Somatic Cell Counts

The population dynamics for bulk milk SCC in 27,000 Dutch dairy farms was studied over 6 yr; SCC declined markedly in 1984 and 1985. This coincided with the introduction of the quota system in the European Community. The CV of SCC was .36, ranging from .15 to .89. Month of year had a significant eff...

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Veröffentlicht in:	Journal of dairy science 1990-05, Vol.73 (5), p.1343-1350
Hauptverfasser:	Schukken, Y.H., Buurman, J., Brand, A., van der Geer, D., Grommers, F.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals bovin laitier Cattle Cell Count - veterinary cell counting communautes europeennes comunidades europeas conteo de celulas cows dairy cattle dinamica de la poblacion dynamique des populations epidemiology european communities Female ganado de leche lait leche leucocitos leucocyte leukocytes milk Milk - cytology numeration cellulaire Population Dynamics Random Allocation Seasons somatic cell counts Statistics as Topic Time Factors vaca vache
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Zusammenfassung:	The population dynamics for bulk milk SCC in 27,000 Dutch dairy farms was studied over 6 yr; SCC declined markedly in 1984 and 1985. This coincided with the introduction of the quota system in the European Community. The CV of SCC was .36, ranging from .15 to .89. Month of year had a significant effect on SCC with the highest SCC in October and the lowest in April. The dynamics of the annual SCC were modeled with a state transition model. Farmers managing herds with a fairly low SCC (
ISSN:	0022-0302 1525-3198
DOI:	10.3168/jds.S0022-0302(90)78801-7