2018
DOI: 10.1590/s1519-99402018000400004
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Abstract: SUMMARY This study aimed to investigate the relationship among somatic cell scores (SCS) and currently selected traits (milk yield, and fat, protein, lactose, total solids and no-fat-solids contents) in Holstein dairy cows in a semi-arid climate. The data were collected from available records of 272 Holstein cows from January 2007 to December 2016. Farms were located in Agreste region of Pernambuco whose climatic characteristics according to Instituto Nacional de Meteorologia-INMET were: average annual tempera… Show more

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Cited by 16 publications
(7 citation statements)
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“…The percentage of samples of score 4 equals about 30%. Silva et al (2018); Franzoi et al (2019) in Brazil and Italy, respectively, reported similar findings to those observed in this study for decreasing milk yield with the increase of SCS in Holstein cows. A decrease in milk yield with an increase of SCS is attributed to two main groups of reasons.…”
Section: Quarter Daily Milk Yield (Qdmy)supporting
confidence: 90%
“…The percentage of samples of score 4 equals about 30%. Silva et al (2018); Franzoi et al (2019) in Brazil and Italy, respectively, reported similar findings to those observed in this study for decreasing milk yield with the increase of SCS in Holstein cows. A decrease in milk yield with an increase of SCS is attributed to two main groups of reasons.…”
Section: Quarter Daily Milk Yield (Qdmy)supporting
confidence: 90%
“…SCC was the most important milk component contributing to the penalty for dairy farmers in the central region. Thus, the implementation of a rigorous mastitis control program should be a primary priority for dairy farmers in the central region because the high levels of bulk milk somatic cell count are associated with mastitis problems in dairy herds [ 28 - 31 ]. Furthermore, although most dairy farmers in both regions could produce milk with high fat and earn the bonus, many dairy farmers in both regions had some challenges producing milk with SNF that fall into the bonus class.…”
Section: Discussionmentioning
confidence: 99%
“…In general, SCC and thus SCS were high in the investigated Butana (average SCS = 4.6) and Butana × Holstein crossbred cattle (average SCS = 5.1). In contrast, SCS in different Holstein herds ranges between 2.91 and 4.62 (da Silva et al 2018 ; Toffanin et al 2015 ; Costa et al 2019 ). The SCS of milk that is allowed to be consumed varies in different countries, e.g., in the USA, Canada, and Germany, and the SCS threshold is set to 5.9, 5.3, and 5.0, respectively (Olechnowicz and Jaśkowski 2012 ; Schwarz et al 2011 ).…”
Section: Discussionmentioning
confidence: 99%