Analysis of the influence of feeding on the change in the mineral composition of blood of the cattle of different physiological groups when intensifying production

Ulivanova, Galina; Fedosova, Olga; Karelina, Olga; Kulakov, V. A.; Sayitkhanov, E

doi:10.1088/1755-1315/979/1/012088

IOP Conf. Ser.: Earth Environ. Sci.

2022

DOI: 10.1088/1755-1315/979/1/012088

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Analysis of the influence of feeding on the change in the mineral composition of blood of the cattle of different physiological groups when intensifying production

Galina Ulivanova

Olga Fedosova

Olga Karelina

et al.

Abstract: The article presents the results of the analysis and substantiation of changes in the mineral composition of the blood serum of cows of different technological groups and physiological state. It was revealed that the level of zinc in the blood of all studied animals was lower than the normative indicator. Cows with relatively high productivity (8,000 kg of milk and above) also had a lack of potassium, and cows of the 3rd lactation and older had a lack of magnesium. In addition, an increased content of phosphor… Show more

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2024

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Review of antibiotic agents active against infectious mastitis pathogens

Lyashchuk,

Ovchinnikov,

Belyakov

et al. 2024

Agrarnaâ nauka

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The effectiveness of animal treatment largely depends on correctly selected veterinary drugs. In recent years, there has been a decrease in the activity of antimicrobial agents against both gram-positive and gram-negative microorganisms. This trend is associated with the natural processes of adaptation of bacteria to living conditions. Once inside the animal’s body, bacterial cells react flexibly to both the immune response and treatment with antimicrobial agents. In cases where medical care was provided with antibiotics with low activity against a specific pathogen, there was a failure to comply with deadlines or deviations from the treatment regimen, some bacterial cells may not only not die, but also acquire drug resistance. Surviving microorganisms can change the type of colonial growth, the shape of the shell (many modern studies are devoted to L-forms of bacteria, which are formed under the influence of unfavorable factors, including antibiotics) or acquire new qualities through mutational changes. It is these processes that drive the emergence of bacterial strains resistant to antimicrobial drugs. As a result, many treatment regimens cease to give the desired result, since they include drugs whose active components do not have the proper bactericidal effect on resistant strains. In order for the treatment of animals to have therapeutic effectiveness, careful monitoring of antimicrobial agents and the compilation of an up-to-date list of them is necessary, based on the active substances and drug resistance of pathogens of infectious diseases. Thus, reviews of effective antibiotic therapy are a current area of veterinary medicine.

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Review of antibiotic agents active against infectious mastitis pathogens

Lyashchuk,

Ovchinnikov,

Belyakov

et al. 2024

Agrarnaâ nauka

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Experience of using the bolus for preventing hypocalcemia of cows in the fresh period

Smirnova,

Platonov,

Korotkiy

2024

Agrarnaâ nauka

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Relevance and methods. Postpartum paresis is one of the serious complications in high-yielding cows after calving affecting the course of the entire lactation, so the focus of attention is on the choice of means of prevention. For these purposes, in the conditions of the breeding farm named after the 50th anniversary of the USSR (Vologda region), the effect of Calci-mix calcium bolus produced by “Agrokon-Vologda” LLC was studied. The cows of the control group were not injected with bolus, the animals of the I experimental group were injected twice — the first time immediately after calving and after 12 hours, the II experimental group — two boluses at once.Results. During the dry period, the main blood counts of all cows were within the normal range, but after calving before the introduction of the bolus, the calcium content decreased (to 32.8%). On the 1st day after bolus administration, the calcium concentration in cows of the experimental group I was 27.9% higher (p ≤ 0.01), II — by 44.2% (p ≤ 0.01). On the 3rd day in the I and II experimental groups, the calcium content was within the normal range — 2.44 mmol/l (p ≤ 0.05) and 2.43 mmol/l. In the control group, throughout the entire experiment, the calcium concentration was below normal, which led to a decrease in the Ca/R value. The introduction of a bolus allowed to increase the level of ionized calcium in the I and II experimental groups (by 13.3% and 21.2%) and to shift the Ca/R ratio upwards. Thus, the use of bolus had a positive effect and contributed to the replenishment of the lack of Ca in cows in the postpartum period. Taking into account the fact that the introduction of a bolus with a time interval often occurs at night, we consider the most appropriate single injection of two boluses to cows immediately after calving.

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Analysis of the influence of feeding on the change in the mineral composition of blood of the cattle of different physiological groups when intensifying production

Cited by 2 publications

References 2 publications

Review of antibiotic agents active against infectious mastitis pathogens

Review of antibiotic agents active against infectious mastitis pathogens

Experience of using the bolus for preventing hypocalcemia of cows in the fresh period

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