scholarly journals The Financial Impact of Decreased Milk Production Due to Subclinical Mastitis in German Dairy Herds

2017 ◽  
pp. 1-1 ◽  
Author(s):  
Martin PFÜTZNER ◽  
László ÓZSVÁRI
Keyword(s):  
Milk Production ◽  
Subclinical Mastitis ◽  
Financial Impact ◽  
Dairy Herds

scholarly journals A Review on Sub Clinical Mastitis in Dairy Cattle

2019 ◽  
Author(s):  
Champak Bhakat
Keyword(s):  
Risk Factors ◽  
Early Detection ◽  
Dairy Cattle ◽  
Milk Production ◽  
Management Practices ◽  
Complex Disease ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Dairy Herds ◽  
Potential Risk Factors

Subclinical mastitis is the most prevalent and economically destructive disease in dairy cattle throughout the country. It is 3–40 times more common than clinical mastitis and causes the greatest overall losses in most dairy herds. It is a multi etiological complex disease which consists infectious and noninfectious agents as potential risk factors. The prevalence of subclinical mastitis in cows increases with increased milk production, unhygienic management practices and with increasing number of lactation. There are no visible changes in the udder or milk but it reduces milk production and adversely affects milk quality. Early detection of sub clinical mastitis can be done by various indirect and direct tests.

scholarly journals Prevalence of methicillin-resistant Staphylococcus aureus and pattern of antimicrobial resistance in mastitis milk of cattle in Chitwan, Nepal

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Asmita Shrestha ◽  
Rebanta Kumar Bhattarai ◽  
Himal Luitel ◽  
Surendra Karki ◽  
Hom Bahadur Basnet
Keyword(s):  
Public Health ◽  
Staphylococcus Aureus ◽  
Antimicrobial Resistance ◽  
Subclinical Mastitis ◽  
World Health ◽  
Dairy Herds ◽  
Microbiological Analysis ◽  
Biochemical Tests ◽  
Methicillin Resistant ◽  
Milk Samples

Abstract Background The threat of methicillin-resistant Staphylococcus aureus (MRSA) exists globally and has been listed as a priority pathogen by the World Health Organization. One of the sources of MRSA emergence is livestock and its products, often raised in poor husbandry conditions. There are limited studies in Nepal to understand the prevalence of MRSA in dairy animals and its antimicrobial resistance (AMR) profile. A cross-sectional study was conducted in Chitwan, one of the major milk-producing districts of Nepal, from February 2018 to September 2019 to estimate the prevalence of MRSA in milk samples and its AMR profile. The collected milk samples (n = 460) were screened using the California Mastitis Test (CMT) and positive samples were subjected to microbiological analysis to isolate and identify S. aureus. Polymerase Chain Reaction (PCR) was used to identify the presence of the mecA gene and screen for MRSA. Results In total, 41.5% (191/460) of milk samples were positive in the CMT test. Out of 191 CMT positive milk samples, the biochemical tests showed that the prevalence of S. aureus was 15.2% (29/191). Among the 29 S. aureus isolates, 6.9% (2/29) were identified as MRSA based on the detection of a mecA gene. This indicates that that 1.05% (2/191) of mastitis milk samples had MRSA. The antibiotic sensitivity test showed that 75.9% (22/29) and 48.3% (14/29) S. aureus isolates were found to be sensitive to Cefazolin and Tetracycline respectively (48.3%), whereas 100% of the isolates were resistant to Ampicillin. In total 96.6% (28/29) of S. aureus isolates were multidrug-resistant (MDR). Conclusions This study revealed a high prevalence of S. aureus-mediated subclinical mastitis in dairy herds in Chitwan, Nepal, with a small proportion of it being MRSA carrying a mecA gene. This S. aureus, CoNS, and MRSA contaminated milk poses a public health risk due to the presence of a phenotype that is resistant to very commonly used antibiotics. It is suggested that dairy herds be screened for subclinical mastitis and treatments for the animals be based on antibiotic susceptibility tests to reduce the prevalence of AMR. Furthermore, future studies should focus on the Staphylococcus spp. to explore the antibiotic resistance genes in addition to the mecA gene to ensure public health.

scholarly journals Characterization of Escherichia coli Strains Derived from Cow Milk of Subclinical and Clinical Cases of Mastitis

2021 ◽  
Vol 11 (2) ◽  
pp. 541
Author(s):  
Katarzyna Grudlewska-Buda ◽  
Krzysztof Skowron ◽  
Ewa Wałecka-Zacharska ◽  
Natalia Wiktorczyk-Kapischke ◽  
Jarosław Bystroń ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Bacterial Species ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Economic Problem ◽  
Cow Milk ◽  
P Value ◽  
Dairy Herds ◽  
E Coli ◽  
Bonferroni Test

Mastitis is a major economic problem in dairy herds, as it might decrease fertility, and negatively affect milk quality and milk yield. Out of over 150 bacterial species responsible for the udder inflammation, Escherichia coli is one of the most notable. This study aimed to assess antimicrobial susceptibility, resistance to dipping agents and biofilm formation of 150 E. coli strains isolated from milk of cows with subclinical and clinical mastitis. The strains came from three dairy herds located in Northern and Central Poland. The statistical analyses were performed with post-hoc Bonferroni test and chi-square test (including Yates correction). The data with a p value of <0.05 were considered significant. We found that the tested strains were mostly sensitive to antimicrobials and dipping agents. It was shown that 37.33% and 4.67% of strains were resistant and moderately resistant to at least one antimicrobial agent, respectively. No extended-spectrum beta-lactamases (ESBL)-producing E. coli were detected. The majority of strains did not possess the ability to form biofilm or formed a weak biofilm. The strong biofilm formers were found only among strains derived from cows with subclinical mastitis. The lowest bacteria number was noted for subclinical mastitis cows’ strains, after stabilization with iodine (3.77 log CFU × cm−2) and chlorhexidine (3.96 log CFU × cm−2) treatment. In the present study, no statistically significant differences in susceptibility to antibiotics and the ability to form biofilm were found among the strains isolated from cows with subclinical and clinical mastitis. Despite this, infections in dairy herds should be monitored. Limiting the spread of bacteria and characterizing the most common etiological factors would allow proper treatment.

Relationships between Milk Production, Ovarian Function and Fertility in High-producing Dairy Herds in North-eastern Spain

2008 ◽  
Vol 43 ◽  
pp. 38-43 ◽  
Author(s):  
J Yániz ◽  
F López-Gatius ◽  
G Bech-Sàbat ◽  
I García-Ispierto ◽  
B Serrano ◽  
...  
Keyword(s):  
Milk Production ◽  
Ovarian Function ◽  
Dairy Herds ◽  
North Eastern

scholarly journals Aetiology and prevalence of subclinical mastitis in dairy herds in peri-urban areas of Kigali in Rwanda

2019 ◽  
Vol 51 (7) ◽  
pp. 2037-2044 ◽  
Author(s):  
Jean Baptiste Ndahetuye ◽  
Ylva Persson ◽  
Ann-Kristin Nyman ◽  
Michael Tukei ◽  
Martin Patrick Ongol ◽  
...  
Keyword(s):  
Urban Areas ◽  
Subclinical Mastitis ◽  
Dairy Herds

scholarly journals Effect on Milk Production and Income Over Feed Cost from Following Less than Optimum Management Strategies Related to Dairy Cow Replacement

1973 ◽  
Vol 5 (2) ◽  
pp. 139-145
Author(s):  
Richard W. Rundell
Keyword(s):  
Milk Production ◽  
Management Strategies ◽  
Dairy Herds ◽  
Dairy Farmers ◽  
Feed Cost ◽  
High Production ◽  
Costs Of Production ◽  
Feed Costs ◽  
Optimum Management

Dairy farmers, as profit maximizers, are constantly striving to expand the income producing ability of their dairy herds. As managers of their business, their direct concern is to attain high production per cow and enhance the average quality of their herd by removal of the unprofitable producers. They are also striving to earn a large income above feed costs, since feed costs comprise 50 percent or more of the costs of production. This value must be high enough to pay for the other costs of production, including a return to capital and operators labor, to return a profit. Proper culling or the identification and subsequent removal of the lower producing cows from a herd is important because of the increased average milk production and the resulting increased income above feed costs.

scholarly journals Identification of subclinical mastitis caused by Mycoplasma spp. from screenings of bulk tanks

2018 ◽  
Vol 70 (6) ◽  
pp. 1793-1797
Author(s):  
S.F. Joaquim ◽  
F.F. Guimarães ◽  
A. Salina ◽  
N.B. Junqueira ◽  
E.N. Gomes ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Subclinical Mastitis ◽  
Mammary Glands ◽  
Dairy Herds ◽  
Mycoplasma Bovis ◽  
Chain Reaction ◽  
Milk Samples ◽  
Polymerase Chain ◽  
Bulk Tank ◽  
Mycoplasma Spp

ABSTRACT Mastitis caused by Mycoplasma spp., regardless of species, are considered highly contagious pathogens and, usually was not responsive to antimicrobial therapy. Five dairy herds, comprising 489 animals and 1,956 mammary glands, were used in this study. Milk samples were obtained from bulk tanks and subjected to polymerase chain reaction (PCR) for the identification of Mollicutes, Mycoplasma spp., and Mycoplasma bovis. Moreover, individual samples from cases of clinical and subclinical mastitis in quarters of the dairy herds’ animals that yielded a positive PCR upon bulk tank analysis were subjected to molecular analysis. Only one bulk tank was positive for class Mollicutes by PCR. All positive samples classified as mastitis teats had their DNA extracted and tested by PCR for both class Mollicutes and M. bovis. Of these, two (2.08%) were positive for Mycoplasma genus, although none was positive for M. bovis. This result suggests that the PCR of bulk tanks is a viable tool in monitoring and preventing mastitis infections caused by Mycoplasma spp.

scholarly journals The Impact of Paratuberculosis on Milk Production, Fertility, and Culling in Large Commercial Hungarian Dairy Herds

2020 ◽  
Vol 7 ◽  
Author(s):  
Laszlo Ozsvari ◽  
Andrea Harnos ◽  
Zsolt Lang ◽  
Attila Monostori ◽  
Sam Strain ◽  
...  
Keyword(s):  
Milk Production ◽  
Dairy Herds ◽  
The Impact
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