Cytological quality of milk from cows kept in different types of pens, according to the season of the year
نویسنده
چکیده
A total of 1947 farms from the Pomerania and Kujawy regions were analysed for the effect of type of pen (with or without litter) on the cytological quality of milk, taking into account the season of the year in the statistical calculations. It was found that in most barns, cows were kept in shallow litter stalls. Regardless of the season of the year, milk of the highest cytological quality was obtained from cows kept in pens on litter. Regardless of type of pen and type of litter, the highest proportion of samples with the SCC indicating clinical or subclinical mastitis was found from September to November.
منابع مشابه
Defining appropriate model for genetic analysis of milk yield in different lactations of Iranian Holstein cows
In this study, appropriate genetic co (variance) structure across ages of milk production in the Iranian Holstein cows was modeled using 35167 records originated from 1098 sires and 27236 dams. These data were collected from 110 herds during 2011 to 2015 by the Iranian Animal Breeding Center. For all lactations, birth year, birth month, calving year, calving season, calving month, age and herd ...
متن کاملRisk Factors of Seven Groups of Health Disorders in Iranian Holstein Cows
Objective: The cows that don’t have access to sufficient energy in their ration can get sickness. Milk production has a high priority in metabolism of dairy cows so lactating cows are more prone to get sick This can ruin all the benefits of higher milk yield because of the higher prevalence of the disorders. Methods: Data for this research had gathered from a herd with 1600 Holstein cattle in E...
متن کاملRisk Factors of Seven Groups of Health Disorders in Iranian Holstein Cows
Objective: The cows that don’t have access to sufficient energy in their ration can get sickness. Milk production has a high priority in metabolism of dairy cows so lactating cows are more prone to get sick This can ruin all the benefits of higher milk yield because of the higher prevalence of the disorders. Methods: Data for this research had gathered from a herd with 1600 Holstein cattle in E...
متن کاملAnimal Factors Condition Milk Performance and Quality of Grazing Dairy Cows
The base of this review is to consider the relevant role that animal factors (potential milk yield, body weight, body condition score, state of lactation, parity and fertility) play on milk performance (considering the energy balance and the rumen function across the full lactation curve of animals) and milk quality (milk protein content, milk fat content, milk lactose content, vitamins, minera...
متن کاملPerformance of Holstein Calves, Heifers and First-Lactating Cows Fed Starter Diets with Different Protein Levels and Types of Soybean Meal
Holstein calves were fed pelleted starter diets with crude protein (CP) concentrations of 18%, 22% and 24% per dry matter (DM) containing soybean meal (SBM) (SBM18, SBM20 and SBM24), respectively, for 10 weeks from 14 days of age. Another diet with a CP concentration of 18% per DM was tested using commercial xylose-soybean meal (XSB; Yasminomax) instead of SBM. Each diet was fed to 24 calves an...
متن کامل