Infectious Factor in the Etiology of Mastitis in Highly Productive Lactating Cows

Filatova, A.V.; Tshivale, B. M.; Fedotov, S.V.; Avdeenko, Vladimir S.; Klimov, N. T.

doi:10.52368/2078-0109-2022-58-4-86-91

Cited by 2 publications

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“…В результате проведенных исследований установлено, что при маститах у коров в молоке обнаруживаются следующие микроорганизмы: Staphylococcus haemolyticus, Staphylococcus epidermidis, Staphylococcus saprophyticus, Streptococcus agalactiae и Escherichia coli, что согласуется с данными других исследователей [12][13][14][15][16].…”

Section: Conflict Of Interestunclassified

Metabolism features and milk microbiota of cows with mastitis in the Amur Oblast

Ostyakova,

Shulga,

Irkhina

et al. 2023

Veterinary Science Today

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The effective management practices of dairy farming are inextricably linked with the production of high quality milk, while the mastitis is one of the causes of reductions in milk yields and quality. The aim of the work was to study the microbiological profile of milk, the sensitivity of isolated microorganisms to antibiotics and metabolism features of cows with mastitis in the Amur Oblast. The following microorganisms were identified in the milk samples from cows with mastitis: Staphylococcus epidermidis (34.69%); microbial associations: Streptococcus agalactiae + Escherichia coli (32.65%) and Staphylococcus saprophyticus + Streptococcus agalactiae + Escherichia coli (30.61%); Staphylococcus haemolyticus (2.05%). Microorganisms isolated from the milk of mastitis-affected cows were susceptible to the following antimicrobials: Escherichia coli to cefotaxime (28.00 ± 2.00 mm) and ceftriaxone (27.50 ± 0.35 mm); Staphylococcus epidermidis, Staphylococcus haemolyticus, Staphylococcus saprophyticus to cefotaxime (35.50 ± 0.18 mm) and amoxicillin (35.10 ± 0.35 mm); Streptococcus agalactiae to tetracycline (27.60 ± 1.17 mm) and gentamicin (26.40 ± 0.99 mm). Metabolic disorders were observed in cows with mastitis. The albumin-globulin ratio was reduced (0.41), which is typical for various inflammatory processes; and a low albumin levels (29.00 ± 0.89%) suggested a decreased protein synthesis in hepatocytes. A moderate increase in gamma globulins (47.60 ± 1.05%) was associated with stimulation of the phagocytic mononuclear system. Water and mineral metabolism disorders were confirmed by low levels of calcium (1.80 ± 0.03 mmol/L) and magnesium (0.70 ± 0.02 mmol/L), which is a sign of many pathological conditions, and is associated with heavy lactation. Calcium-phosphorus ratio was reduced (0.82). Hematological indicators suggested hypochromic anemia (hemoglobin level – 100.60 ± 1.28 g/L, globular value – 0.60 ± 0.01). The leukogram was indicative of lymphocytopenia (36.90 ± 2.60%) and neutrophilia (rod-shaped neutrophils – 1.80 ± 0.13%, segmented neutrophils – 51.80 ± 2.51%).

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Section: Conflict Of Interestunclassified

Metabolism features and milk microbiota of cows with mastitis in the Amur Oblast

Ostyakova,

Shulga,

Irkhina

et al. 2023

Veterinary Science Today

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“…Зачастую развитие воспалительного процесса в вымени начинается при попадании патогена из окружающей среды в организм животного через сосковый канал. Почти любой микроб-оппортунист при проникновении в молочную железу может привести к появлению мастита как в клинической форме его проявления, так и в субклинической [8,9] [25,26,27]. Анализируя научные работы отечественных и зарубежных авторов, можно заключить, что разнообразие микроорганизмов, способных вызвать мастит, очень велико, кроме того, в публикациях прослеживается определенная статистика по превалирующим возбудителям в разных странах мира [28,29].…”

Section: Introductionunclassified

Etiology and epizootology of bovine mastitis (analytical review)

Andreeva,

Evgrafova,

Voronina

et al. 2024

Veterinariâ segodnâ

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Mastitis is one of the most common global diseases of dairy cattle, it is detected in 5–36% animals in a herd undergoing a single examination, and the incidence reaches 68% within a year, given that some cows get reinfected more than once. The disease causes significant economic losses to dairy industry both in the Russian Federation and globally. Mastitis is an inflammation of the mammary gland that develops in response to the effects of various factors of the external and internal environment, which are classified as mechanical, physical, biological, etc. Based on the clinical symptoms, the disease has two forms: clinical and subclinical. Both the animal and its milk shall be subjected to a thorough examination for the diagnosis establishment. The final stage of the mastitis diagnosis in cows is laboratory testing. In this case, the most informative is the bacteriological method, which helps to isolate a pathogen’s pure culture, identify it and determine sensitivity to antimicrobial drugs. The latter plays a specific role in indicating the direction of further therapeutic measures, since the obtained data facilitate selection of effective antibiotics against certain pathogens. Incorrect treatment, incompliances with the prescribed therapy, as well as unnecessary use of antimicrobials can lead to the generation of multi-resistant bacteria. Due to the widespread spread of antibiotic-resistant microorganism strains, despite the large number of drugs currently used, their effectiveness is constantly decreasing. The prospects for the further use of antibiotics as therapeutics are questioned by many researchers and international organizations due to antibiotic resistance rapidly developing in many agents. Vaccination plays a significant role in infectious disease control. The use of vaccines not only reduces mastitis occurrence in cows, but also significantly improves the quality of dairy products.

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Infectious Factor in the Etiology of Mastitis in Highly Productive Lactating Cows

Cited by 2 publications

References 0 publications

Metabolism features and milk microbiota of cows with mastitis in the Amur Oblast

Metabolism features and milk microbiota of cows with mastitis in the Amur Oblast

Etiology and epizootology of bovine mastitis (analytical review)

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