Corpus ID: 54210315

Mastitis causative agents and SCC relationship with milk yield and composition in dairy cows

@inproceedings{Frana2017MastitisCA,
  title={Mastitis causative agents and SCC relationship with milk yield and composition in dairy cows},
  author={M. França and D. Valle and L. P. Veronese},
  year={2017}
}
This study aimed to evaluate the effect of mastitis pathogens prevalence and somatic cells count (SCC) on dairy cow milk yield (MY) and composition. Milk samples of Holstein cows (n=1163) with 30.97±10.22 kg·d-1 of milk yield were collected and evaluated. Staphylococcus spp. was the most prevalent pathogen. In general, increased SCC decreased MY and lactose concentration and increased milk crude protein content. Coliforms had different SCC and milk crude protein concentrations relation. SCC and… Expand

Figures and Tables from this paper

Chronic subclinical mastitis reduces milk and components yield at the cow level
TLDR
Evaluating the effects of chronic subclinical mastitis caused by different types of pathogens on milk yield and milk components at the cow level and by pathogen using a linear mixed effects model found healthy cows produced more milk than each of the other groups and produced higher milk component yields than the chronicPC cows. Expand
Evaluation of hygiene indicators in raw milk commercialized in Caruaru , Brazil
This study aimed to evaluate the raw milk commercialized in Caruaru, located in the Northeast of Brazil, by physical, chemical and bacteriological assays. Physical and chemical tests were based andExpand
Productivity and physiological response of lactating Holstein cows to sugarcane supplementation and evaporative cooling under heat-stress
TLDR
Higher fat content and total solids of milk were observed with the RM-based diet, while crude protein and lactose were higher with MS, and the use of the cooling system led to higher DMI and feed N efficiency use. Expand
Impact of farm size on milk quality in the Brazilian dairy industry according to the seasons of the year
TLDR
Evaluated the relationship between production scale on dairy farms and milk quality, how it behaviors throughout the year and set goals to improve quality according to each strata showed that dairy farming is predominantly carried out on small-scale production properties. Expand

References

SHOWING 1-10 OF 24 REFERENCES
Pathogen-specific effects on milk yield in repeated clinical mastitis episodes in Holstein dairy cows.
TLDR
Estimation of the effects of clinical mastitis cases due to different pathogens on milk yield in Holstein cows found Mastitic cows were generally higher producers before the CM episode than their nonmastitic herdmates and milk loss varied with pathogen and case number. Expand
Bovine mastitis pathogens in New York and Pennsylvania: prevalence and effects on somatic cell count and milk production.
Milk samples were collected from 108,312 dairy cows during 1601 farm visits made between January 1991 and June 1995. The herd visits were made by personnel from the Central Laboratory of the QualityExpand
Udder infection and milk somatic cell count , NAGase activity and milk composition — fat , protein and lactose — in Israeli-Assaf and Awassi sheep
The present study aimed to identify the pathogens that cause subclinical udder infections in Israeli dairy sheep and evaluate their influence on milk yield and composition. Eight hundred and fifteenExpand
Bovine subclinical intramammary infection caused by coagulase-negative staphylococci increases somatic cell count but has no effect on milk yield or composition.
TLDR
In conclusion, subclinical mastitis caused by CNS increased the SCC but had no effect on milk yield and composition of dairy cows. Expand
Changes in milk composition as affected by subclinical mastitis in sheep.
The mechanism of the effects of glandular-level subclinical mastitis in dairy sheep on milk yield and on its composition as expressed in curd yield was studied. Thirty-six Israeli-Assaf dairy sheepExpand
The effect of pathogen-specific clinical mastitis on the lactation curve for somatic cell count.
TLDR
Data from 274 Dutch herds recording clinical mastitis over an 18-mo period were used to investigate the effect of pathogen-specific CM on the lactation curve for somatic cell count (SCC), finding effects of CM differed among the pathogens isolated. Expand
Quantification of milk yield and composition changes as affected by subclinical mastitis during the current lactation in sheep.
TLDR
The aim of this work was to quantify, on a half-udder basis, the changes in ewe milk yield and composition caused by unilateral subclinical mastitis within the current lactation, and to test the effect of intramammary infection in the 7 wk following the onset of infection. Expand
Risk factors associated with clinical mastitis in low somatic cell count British dairy herds.
TLDR
The study has identified areas of the environment in which efforts to improve hygiene should be focused in dairy farms with low bulk milk somatic cell counts and quantify risk factors associated with the incidence rate of clinical mastitis. Expand
Antimicrobial susceptibility of Streptococcus species isolated from clinical mastitis in dairy cows.
TLDR
The antimicrobial susceptibility was determined for 50 Streptococcus uberis, 42 S. dysgalactiae and S. agalactiae strains isolated from cow mastitis, finding resistance to tetracycline was most frequent, then macrolide and/or lincomycin resistance, and all strains were susceptible to chloramphenicol and rifampicin. Expand
Bovine mastitis: an evolving disease.
TLDR
The changes in incidence and pattern of mastitis in the UK over the last four decades are reviewed and apparent changes in the behaviour of E. coli and its ability to cause persistent intramammary infection are discussed. Expand
...
1
2
3
...