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| Bondan,Carlos; Folchini,Jéssica Aneris; Noro,Mirela; Quadros,Daniel Lazzari; Machado,Karine Martini; González,Félix Hilário Diaz. |
| ABSTRACT: Worldwide, milk analysis is an satisfactory measurement of milk quality on dairy farms. Milk composition is the base for payment systems, so knowledge of its characteristics at different periods is essential for modern dairy producer. The aim of the study was to evaluate the effects of year, season, stage of lactation, and lactation number on variations in milk yield and composition of Holstein cows (n=148,604). Milk yield estimated by multiple regression was 25,50L/cow/day. Winter was the season with the highest milk yield and the highest protein and lactose content. Milk fat was highest in the fall, in cows in late lactation and also in primiparous cows. Lactating cows from 6 to 60 days in lactation and those in 2nd or 3rd lactation showed the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Milk quality; Lactation number; Seasonality; Stage of lactation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200650 |
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