Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress

Dmitriy Blagov; Igor Dovlatov; Ilya Komkov

doi:10.21603/1019-8946-2025-5-57

UDC 63

THERMOREGULATORY POTENTIAL OF SODIUM BICARBONATE FOR LACTATING COWS UNDER THERMAL STRESS Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress

АА Аа

Published in Dairy industry · Issue 5 · Pages 60–67 · Rubric: Research Article

DOI: https://doi.org/10.21603/1019-8946-2025-5-57

Received: 17.07.2025 Accepted: 19.09.2025 Published: 21.10.2025 Language of publication: RUS

Authors

Dmitriy Blagov

SPIN

Igor Dovlatov

SPIN

Ilya Komkov

SPIN

Dmitriy Blagov

Academic degree: candidate of sciences in biology

Federal Scientific Agroengineering Center VIM Russian Federation · Moscow

SPIN

Igor Dovlatov

Academic degree: candidate of technical sciences

Federal Scientific Agroengineering Center VIM Russian Federation · Moscow

SPIN

Ilya Komkov

Federal Scientific Agroengineering Center VIM Russian Federation · Moscow

SPIN

ABSTRACT

Heat stress occurs when the temperature exceeds +25°C (THI ≥ 77). It reduces milk yield and worsens the welfare of dairy cattle. This research featured methods that minimize the effects of heat stress in mild climate. As a buffer additive, sodium bicarbonate can stabilize metabolism and increase the resistance of animals to stress factors. The experiment was conducted on 30 lactating Holstein cows under simulated thermal stress (+30°C, humidity 65–70%). Sodium bicarbonate was administered with morning feed in doses of 150 g (group 1) and 200 g (group 2). The microclimate parameters were monitored by Hobo U12-012 sensors. The analysis indicators included milk yield, milk quality (fat, protein, somatic cell count), and hematological parameters (leukocytes, glucose, hemoglobin). The data was processed using variation statistics. The addition of 200 g of sodium bicarbonate could reduce the drop in daily milk yield to 9.1% (vs. 13.5% in the control group), as well as minimized changes in milk fat and protein by 0.20 and 0.17%, respectively. The level of somatic cells increased by only 15% (vs. 30.56% in the control). The hematological analysis showed steady leukocytes (a decrease of 0.93%) and a moderate increase in glucose (by 2.5%), which was used as a stress biomarker. The data obtained were consistent with similar studies conducted in tropical regions; however, the doses were adapted to short-term thermal stress in mild climate. In this research, 200 g sodium bicarbonate per day reduced the negative effects of heat stress on milk yield and the physiological state of cows. The developed functional and structural scheme of response makes it possible to integrate the temperature and humidity index and hematological data into digital microclimate management systems, thus providing a tailored approach to dairy cattle farming. The results may facilitate the technological optimization of dairy cattle diets in conditions of seasonal climatic fluctuations.

KEYWORDS

sodium bicarbonate, milk productivity, hematological dinamyc, heat stress, temperature and humidity index, digital monitoring of microclimate, seasonal heat loads, effectiveness of feed additives

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Blagov D. A., Dovlatov I. M., Komkov I. V. Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress // Dairy industry. 2025. no. 5. pp. 60-67. DOI: https://doi.org/10.21603/1019-8946-2025-5-57. (Date of access 06.10.2026).

MLA

Dmitriy Blagov, Dovlatov I. M., Komkov I. V.. "Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress." Dairy industry.5 (2025): 60-67. DOI: https://doi.org/10.21603/1019-8946-2025-5-57.

APA

Blagov D. A., Dovlatov I. M., Komkov I. V. (2025). Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress. Dairy industry(5), 60-67. https://doi.org/10.21603/1019-8946-2025-5-57

Chicago

Dmitriy Blagov, Dovlatov I. M., Komkov I. V.. "Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress." Dairy industry, no. 5 (2025): 60-67. https://doi.org/10.21603/1019-8946-2025-5-57.

WIKI

{{cite journal | author = Blagov D. A., Dovlatov I. M., Komkov I. V. | title = Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress | journal = Dairy industry | year = 2025 | issue = 5 | pages = 60-67 | doi = 10.21603/1019-8946-2025-5-57 }}

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THERMOREGULATORY POTENTIAL OF SODIUM BICARBONATE FOR LACTATING COWS UNDER THERMAL STRESS Thermoregulatory Potential of Sodium Bicarbonate for Lactating Cows under Thermal Stress

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