Patterns of intramammary infection and clinical mastitis over a 5 year period in a closely monitored herd applying mastitis control measures

1995 ◽  
Vol 62 (1) ◽  
pp. 39-50 ◽  
Author(s):  
J. Eric Hillerton ◽  
A. John Bramley ◽  
R. Tim Staker ◽  
Charles H. McKinnon
Keyword(s):  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Substantial Improvement ◽  
Control Measures ◽  
Bacteriological Study ◽  
Control Plan ◽  
Udder Health ◽  
Total Incidence ◽  
Coagulase Positive Staphylococci ◽  
Mastitis Control

SummaryThe udder health of a research herd of between 160 and 220 Friesian cows run on a commercial basis has been monitored closely, including detailed bacteriological study, over 5 years. The five point mastitis control plan had been in use for several years prior to this study and was continued with minor alterations to the management of the plan, more detailed bacteriological monitoring and increased encouragement to apply it. It has proved possible to make a substantial improvement in the udder health of the herd. The percentage of infected cows fell from 21·9 to 12·0 and the percentage of infected quarters from 7·3 to 3·3. The main benefit has been a drastic reduction in the rate of clinical and subclinical mastitis caused by coagulase-positive staphylococci. However the total incidence of clinical mastitis did not change substantially, averaging around 30 cases/100 cows per year. This was largely because environmental mastitis organisms were responsible for 65 % of all clinical cases. The results showed marked differences in the patterns of infection due to the environmental mastitis pathogens, Gram-negative bacteria and aesculin-hydrolysing streptococci, suggesting different mechanisms of invasion of the gland.

scholarly journals Assessment of udder health in lame cows

2020 ◽  
Vol 89 (2) ◽  
pp. 133-140
Author(s):  
Vladimír Hisira ◽  
Pavel Slovák ◽  
Paulína Marčeková ◽  
Marián Kadaši ◽  
Pavol Mudroň
Keyword(s):  
Dairy Cows ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Coagulase Negative Staphylococci ◽  
Digital Dermatitis ◽  
White Line ◽  
Udder Health ◽  
Milk Samples ◽  
California Mastitis Test ◽  
Sole Ulcers

The objective of this study was to assess the udder health in lame dairy cows. The study was performed on 35 dairy cows which were admitted to the Clinic of Ruminants. The most frequent claw diseases were white line abscess (28.6%) and toe necrosis (28.6%), followed by digital dermatitis (17.1%), toe ulcers (14.3%), and sole ulcers (11.4%). The prevalence of mastitis in lame cows was 74.3% (26); clinical mastitis was detected in 5 (19.2%) and subclinical mastitis in 21 (80.8%) dairy cows. Distribution of mastitis was similar in terms of front (52.54%) and rear quarters (47.46%). For statistical analyses of mastitis grade in lame dairy cows, a six-point Mastitis Score was created based on physical examination of the mammary gland and results of California Mastitis Test. The Mastitis Score tended to be higher in cows with corium inflammation than in those with digital dermatitis (10.0 and 6.5, respectively). Microbiological culture of 24 positive milk samples was performed and intra-mammary pathogens were isolated in 18 (75%) samples. The most prevalent bacteria were coagulase negative staphylococci (50%), followed by Enterococcus spp. (16.7%), Proteus spp. (11.1%), and Aerococcus viridians (11.1%). Of the total bacteria, contagious pathogens were determined in two milk samples (11.1%). In conclusion, high prevalence of mastitis was detected in lame cows suffering from claw diseases without a significant effect of the type of claw diseases on the mastitis grade. Moreover, the dominating isolation of environmental pathogens may be a result of longer lying period of animals affected with lameness.

scholarly journals Prevalence of mastitis in dairy goat farms in Eastern Algeria

2019 ◽  
Vol 12 (10) ◽  
pp. 1563-1572 ◽  
Author(s):  
Zahra Gabli ◽  
Zouhir Djerrou ◽  
Abd Elhafid Gabli ◽  
Mounira Bensalem
Keyword(s):  
Subclinical Mastitis ◽  
Mammary Glands ◽  
Clinical Mastitis ◽  
Control Measures ◽  
Dairy Goat ◽  
Coagulase Negative Staphylococci ◽  
California Mastitis Test ◽  
Eastern Algeria ◽  
And Control ◽  
Positive Half

Aim: This study aimed to investigate mastitis in dairy goat farms through the California mastitis test (CMT) and bacteriological examinations. Materials and Methods: A total of 845 goats belonging to 18 farms from four regions (Tébessa, Guelma, Souk Ahras, and Skikda) were examined. Results: Clinical examination of the mammary glands showed that 30/845 (3.55%) goats had clinical mastitis and 32 goats had half-teat inflammation. CMT subclinical mastitis (SCM) was detected in 815 goats that were presumed to be healthy. CMT showed 46 (5.64%) CMT-positive goats as well as 47 (2.88%) positive half-udders with a score of ≥2. A total of 79 bacteria were isolated and identified from the 79 bacterial positive samples. Bacteriological analyses showed that Gram-positive staphylococci were largely responsible for clinical and SCM. Coagulase-negative staphylococci, with an isolation frequency of 56.96%, were the most prevalent bacteria from all isolated organisms. The second most prevalent organism was Staphylococcus aureus at 40.50% and streptococci (2.53%) had the smallest percentage of isolation. Conclusion: It is suggested that due to the prevalence of mastitis in this species, farmers should be aware of the problem to plan preventive and control measures to reduce dairy goat losses due to this disease.

Influence of static and dynamic teat characteristics and milking time on udder health in Norwegian Red Cattle

1990 ◽  
Vol 57 (2) ◽  
pp. 171-177 ◽  
Author(s):  
Odd Rønningen ◽  
Arne Dagfinn Reitan
Keyword(s):  
Cell Count ◽  
Field Survey ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Depth Of Penetration ◽  
Udder Health

SummaryA field survey with 70 cows in 15 herds was carried out to find a possible correlation between the depth of teat penetration into the teatcup liner during milking, and udder health. The investigation showed that the depth of penetration into the liner of fore teats was positively correlated with the fore teat end hardness (P < 0·01), and with the frequency of clinical mastitis for the whole udder (P < 0·1). The investigation also showed that the teat end height above the floor was negatively correlated with mean cell count for the previous year (P < 0·001), and with the prevalence of subclinical mastitis in rear quarters (P < 0·05).

scholarly journals The occurrence of mastitis and its effect on the milk malondialdehyde concentrations and blood enzymatic antioxidants in dairy cows

2019 ◽  
Vol 64 (No. 10) ◽  
pp. 423-432
Author(s):  
F Zigo ◽  
J Elecko ◽  
M Vasil ◽  
S Ondrasovicova ◽  
Z Farkasova ◽  
...  
Keyword(s):  
Clinical Status ◽  
Dairy Herd ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Enzymatic Antioxidants ◽  
Coagulase Negative Staphylococci ◽  
Complex Investigation ◽  
Udder Health ◽  
Milk Samples ◽  
California Mastitis Test

Early identification of mastitis is a serious challenge for dairy farmers and veterinarians in ensuring the health of an animal and the hygienic quality of the produced milk. The purpose of this study was to detect the occurrence and aetiology of mastitis in a dairy herd of 15 milked cows localised in a farm in west Slovakia. During the complex investigation, 606 quarter milk samples were examined (6 quarters were discarded) and classified based on the clinical status, the presence of abnormal udder secretions, the result of the California mastitis test (CMT), the somatic cell count (SCC) and the bacteriological identification of the pathogens causing the intramammary infection (IMI). The study was augmented by the detection of malondialdehyde (MDA) in the milk and the measurements of the blood enzymatic activities of glutathione peroxidase (GPx) and superoxide dismutase (SOD) as potential biomarkers for the udder health screening. A positive CMT score was recorded in 19.5% (118) of the examined quarters and 12.5% (76) of the quarters were infected with bacterial pathogens causing latent mastitis (LM; 1.3%), subclinical mastitis (SM; 8.3%), and clinical mastitis (CM; 2.9%). The most commonly isolated bacteria from the infected quarters were coagulase-negative staphylococci (55.2%), Staphylococcus aureus (11.8%) and streptococci (10.5%). The concentration of MDA and SCC were significantly higher from both the SM and CM cases than in the milk samples from the healthy cows, while the blood activities of SOD and GPx were lower in the cows with CM compared to the healthy cows. The higher MDA concentrations in the SM and CM milk observed in this study showed the presence of an oxidative stress in the infected milk, accompanied by a decrease in the antioxidative enzymatic activity in the blood of the cows. Therefore, the measurement of the milk MDA concentration and the activity of the blood SOD and GPx may prove insightful for the better screening of the udder health in the early diagnosis of mastitis.

Influence of switch level of automatic cluster removers on milking performance and udder health

1993 ◽  
Vol 60 (3) ◽  
pp. 287-297 ◽  
Author(s):  
Morten D. Rasmussen
Keyword(s):  
Milk Yield ◽  
Flow Rate ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Negative Influence ◽  
Udder Health ◽  
Early Removal ◽  
Milk Flow

SummaryThe effect of a switch level of 200 or 400 g/min for automatic cluster removers on milking performance and udder health was measured with 71 first lactation cows in their first 36 weeks of lactation and with 64 older cows in their first 12 weeks of lactation. Early removal of the milking unit decreased machine-on time by 0·5 min, increased average milk flow rate slightly, improved teat condition significantly and reduced the change in teat end thickness during milking of first lactation cows. Early removal of the milking unit did not affect milk yield or composition, and the incidence and prevalence of subclinical mastitis were the same in the two groups. Fewer older cows developed clinical mastitis in the group switched at 400 g/min, but this was not significant. It is concluded that the milking unit can be detached at a milk flow rate of 400 instead of 200 g/min without having a negative influence on milk yield. Machine-on time is shortened and teat condition improved, and udder health does not seem to be affected.

scholarly journals Partial Budgeting of the Application of Teat-dipping to Control Mastitis in Small Farms

2020 ◽  
pp. 24-28
Author(s):  
Dikky Indrawan ◽  
Etih Sudarnika ◽  
Chaerul Basri ◽  
Abdul Zahid Ilyas ◽  
Nyayu Lathifah Tirdasari ◽  
...  
Keyword(s):  
Experimental Data ◽  
Dairy Farms ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Small Farms ◽  
Increase Milk Production ◽  
The Mean ◽  
The Cost ◽  
Mastitis Control ◽  
Teat Dipping

Subclinical mastitis has a higher prevalence than clinical mastitis in many small farmers in Bogor city, and it could reach more than 80 percent. However, the application of teat-dipping could help small farms to control subclinical mastitis prevalence. The objective of this study was to measure the cost of teat-dipping application as subclinical mastitis control in small dairy farms. The partial budget was employed based on the experimental data collected in small dairy farms in Bogor. A number of cows were the basis of simulation for the mean of milk value and the application cost. The findings show an incentive for farmers to apply teat dipping in their farms. The incentive of teat dipping application could be improved to prevent sub-clinical mastitis infection and increase milk production.

scholarly journals Epidemiology and antibiogram of common mastitis-causing bacteria in Beetal goats

2020 ◽  
Vol 13 (12) ◽  
pp. 2596-2607
Author(s):  
Abdul Jabbar ◽  
Muhammad Hassan Saleem ◽  
Muhammad Zahid Iqbal ◽  
Muhammad Qasim ◽  
Muhammad Ashraf ◽  
...  
Keyword(s):  
Risk Factors ◽  
Antimicrobial Agents ◽  
Control Program ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Dairy Goats ◽  
Bacterial Colony ◽  
E Coli ◽  
Udder Health ◽  
Ceftiofur Sodium

Background and Aim: Mastitis has been identified as the most prevalent and economically imperative disease among dairy animals. Thus, understanding its common bacterial pathogens and risk factors is necessary to improve udder health at herd, region, or country level. However, scientific research on caprine mastitis, especially on Beetal breed, has remained to be insufficient in Pakistan. Therefore, this study aimed to evaluate the epidemiology and antibiogram assay of common mastitis-causing bacterial agents, that is, Staphylococcus, Streptococcus, and Escherichia coli, in dairy goats. Materials and Methods: In total, 500 Beetal goats, irrespective of age and those that were not treated with any kind of antimicrobial agents during the past 120 h, were screened using California Mastitis Test in Pattoki, Kasur District, whereas epidemiological factors were recorded. The milk samples of mastitic goats were then collected and processed using standard methods. Each sample was primarily cultured on nutrient agar. Using a specific medium, each bacterial colony was separated using several streak methods. Six antibiotic disks belonging to different antibiotic groups were used for antibiogram profiling of bacterial isolates. Chi-square test was used to assess the association of baseline characteristics and mastitis occurrence. Meanwhile, multivariable logistic regression (p<0.001) was utilized to determine the risk factors associated with positive and negative dichotomous outcome of mastitis. Results: The results revealed that the overall prevalence of goat mastitis was 309 (61.8%), in which 260 (52%) and 49 (9.8%) cases were positive for subclinical mastitis (SCM) and clinical mastitis (CM), respectively. Streptococcus and E. coli were found to be the predominant isolates causing SCM and CM, respectively (p<0.001). It was observed that amoxicillin+clavulanic acid was highly sensitive to isolates of Staphylococcus and Streptococcus and ceftiofur sodium to isolates of Streptococcus and E. coli, while enrofloxacin was found to be sensitive to isolates of Streptococcus and E. coli. Risk factors such as herd structure, deworming, vaccination, presence of ticks, use of teat dip and mineral supplements, feeding type, age, parity, housing, blood in the milk, milk leakage, milk taste, and milk yield were found to have the strongest association with mastitis occurrence, while ease of milking has moderate association. Conclusion: In the area examined, cases of SCM were found to be higher compared with that of CM, and ceftiofur sodium has been identified as the preferred treatment in both clinical and subclinical forms of caprine mastitis in Beetal goats. Risk factors for mastitis that was identified in this study can form the basis for the creation of an udder health control program specific for dairy goats. We hope our findings could raise awareness of the risk factors and treatment approaches for common mastitis-causing bacterial agents.

scholarly journals Effects of environmental modification on mastitis occurrence and hormonal changes in Holstein cows

2013 ◽  
Vol 33 (6) ◽  
pp. 826-830 ◽  
Author(s):  
Juliana R.P. Arcaro ◽  
Soraia V. Matarazzo ◽  
Claudia R. Pozzi ◽  
Irineu Arcaro Junior ◽  
Luciandra M. de Toledo ◽  
...  
Keyword(s):  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Hormonal Changes ◽  
Treatment Groups ◽  
Milk Samples ◽  
California Mastitis Test ◽  
Microbial Isolation ◽  
Etiological Agents ◽  
And Control ◽  
Coagulase Positive Staphylococci

The purpose of this research was to evaluate the effects of evaporative cooling in freestall on mastitis occurrence, milk production, and composition, as well as cortisol, T3 (triiodothyronine), and T4 (thyroxin) levels in lactating dairy cows. Twenty-eight multiparous cows averaging 70 ± 10 day postpartum were used in four treatments from January to March 2003. The treatments were: Day (cooling from 7:00 a.m. to 7:00 p.m.); Night (cooling from 7:00 p.m. to 7:00 a.m.); 24-hour (cooling 24-hour); and Control (no cooling). Wired cup test was used for clinical mastitis diagnosis, and the California Mastitis Test (CMT) was used to identify subclinical mastitis. Blood and milk samples were taken weekly for microbiological and hormonal analyses. The cortisol levels were higher than normal values in all treatment groups, suggesting stress conditions, but T3 and T4 levels remained normal in all groups. The occurrence of subclinical mastitis was lower in Day and Night groups than in Control and 24-hour groups. Regarding the microbiological analyses, in all groups the isolation of Corynebacterium sp. from milk samples increased while negative coagulase staphylococci (CNS) declined as etiological agents of subclinical mastitis. However, in Day and 24-hour groups, coagulase positive staphylococci (CPS) increased mainly Staphylococcus aureus (49.8% and 47.7% respectively). The Night group showed a decrease in subclinical mastitis occurrences. Our data indicate that all animals subjected to treatments presented high levels of cortisol, indicating a stress condition. The Night treatment presented a reduction in microbial isolation, suggesting a reduced susceptibility to mastitis.

scholarly journals Prevalence of bovine mastitis in smallholder lactating dairy farms in Hawassa, SNNPR, Ethiopia

2020 ◽  
Vol 5 (6) ◽  
pp. 218-224
Author(s):  
Mulugeta Sosango ◽  
◽  
Amanuel Ashebo ◽  
Demelash Kalo ◽  
◽  
...  
Keyword(s):  
Risk Factors ◽  
Dairy Cows ◽  
Bovine Mastitis ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Control Measures ◽  
Economic Losses ◽  
High Grade ◽  
Paper Test ◽  
Lactating Dairy Cows

A cross sectional study was conducted between November 2015 and February 2016 in Hawassa town, SNNPR, Ethiopia to determine the overall mastitis prevalence and identify the role of some selected risk factors in 183 randomly selected small holder lactating dairy cows of 53 high grade Holstein Friesian, 113 Holstein indigenous zebu cross and 17 indigenous zebu breeds. The prevalence of clinical mastitis was determined through examination of abnormalities of milk, udder or cow. The prevalence of subclinical mastitis determined by using indicator paper test. From total 183 lactating dairy cows examined for bovine mastitis 9(4.9%) had clinical mastitis, while 56(30.6%) subclinical mastitis. Out of 9(4.9%) clinical mastitis, 9.43 and 3.53% occurred in high grade Holstein and Holstein indigenous zebu, respectively, but indigenous zebu breed was found not affected. Subclinical mastitis at cow level based on indicator paper test was significantly high (32.07%) in Holstein, (30.9%) in cross breed and (23.5%) in indigenous zebu (p<0.05). Quarter level subclinical mastitis prevalence based on indicator paper test was 32.07, 30.2% and 23.5% in Holstein, cross breed and indigenous zebu, respectively. From the potential risk factors considered, breed (X2=17.3, p<0.05), presence of teat lesion and tick infestation (X2=7.73, p<0.05), stage of lactation (X2=13.8, p<0.05), and parity number (X2=19.4, p<0.05) had significant effect on the prevalence of subclinical mastitis. Considering the possible significant economic losses that could be incurred by both clinical and subclinical mastitis, attention should be paid for further detailed investigation and control measures.

scholarly journals Staphylococcal toxin genes in strains isolated from cows with subclinical mastitis

2008 ◽  
Vol 28 (12) ◽  
pp. 617-621 ◽  
Author(s):  
Manuela F.L. de Freitas ◽  
Isabelle da S. Luz ◽  
Vladimir da M. Silveira-Filho ◽  
José W.P. Júnior ◽  
Tânia L.M. Stamford ◽  
...  
Keyword(s):  
Potential Problem ◽  
Bovine Milk ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Dairy Herds ◽  
Coagulase Negative Staphylococci ◽  
Toxin Genes ◽  
Main Gene ◽  
Staphylococcus Spp ◽  
Coagulase Positive Staphylococci

The present study was carried out in 11 dairy herds in four municipal districts of the rural area of the State of Pernambuco, Brazil. Out of 984 quarter milk (246 cows), 10 (1.0%) were positive for clinical mastitis, 562 (57.1%) for subclinical mastitis and 412 (41.9%) were negative. A total of 81 Staphylococcus spp. isolates were obtained from milk samples from the cows diagnosed with subclinical mastitis. From these, 53 (65.0%) were S. aureus, 16 (20.0%) coagulase-positive staphylococci (CPS) and 12 (15.0%) coagulase-negative staphylococci (CNS). The isolates were further investigated for the presence of toxin genes by multiplex and uniplex PCR. The main gene observed was seg followed by seh, sei and sej. The distribution of these observed genes among the isolates obtained from different areas showed a regional pattern for the SEs. The presence of toxin genes in the strains isolated from bovine milk demonstrates a potential problem for public health.

Sign in / Sign up

Export Citation Format

Share Document