Influence of Mycoplasma bovis infection on milk production and quality of Holstein dairy cows
| Autor: | Fabrício Dias Torres, Karina Medici Madureira, Karen Nascimento da Silva, Cristiane Azevedo, Tiane Martin de Moura, Marcia Regina Skorei, Viviani Gomes |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1469-7629 0022-0299 |
| DOI: | 10.1017/s0022029922000814 |
| Popis: | We wished to determine if Mycoplasma bovis infection can negatively impact milk quality and production in Holstein dairy cows. For this Research Communication, milk samples (271) from Holstein cows from 3 herds were screened for M. bovis by real-time PCR. Positive (n = 21) and negative animals (n = 21) were matched by herd, age, lactations and days in milk (DIM). Pairs were evaluated in 7 stages of lactation: D1–50, D51–100, D101–150, D151–200, D201–250, D251–300, and D ≥ 301. A mixed model was used to assess the effect of groups (M. bovis+ × M.bovis−), time (lactation) and groups × time interaction. Cows positive for M. bovis had lower average milk production per day and high somatic cells count (SCC). |
| Databáze: | OpenAIRE |
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