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A time series analysis of bulk tank somatic cell counts of dairy herds located in Brazil and the United States Ciência Rural
Rodrigues,Liz Gonçalves; Aquino,Maria Helena Cosendey de; Silva,Márcio Roberto; Mendonça,Letícia Caldas; Mendonça,Juliana França Monteiro de; Souza,Guilherme Nunes de.
ABSTRACT: Bulk tank somatic cell counts (BTSCC) is widely used to monitore the mammary gland health at the herd and regional level. The BTSCC time series from specific regions or countries can be used to compare the mammary gland health and estimate the trend of subclinical mastitis at the regional level. Three time series of BTSCC from dairy herds located in the USA and the Southeastern Brazil were evaluated from 1995 to 2014. Descriptive statistics and a linear regression model were used to evaluate the data of the BTSCC time series. The mean of annual geometric mean of BTSCC (AGM) and the percentage of dairy herds with a BTSCC greater than 400,000 cells mL-1 (%>400) were significantly different (P<0.05) according to the countries and the times...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bulk tank somatic cell counts; Time series; Bovine mastitis; Brazil; United States.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400451
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