Identification of best temperature humidity index model for assessing impact of heat stress on milk constituent traits in Murrah buffaloes under subtropical climatic conditions of Northern India

Behera, Rajalaxmi; Chakravarty, A. K.; Sahu, A. K.; Kashyap, Neeraj; Rai, Sweta; Mandal, Ajoy

doi:10.18805/ijar.b-3359

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…The concentration of cortisol can be different for each individual because some animals secrete more stress hormones than others. Of all domestic animals, sheep are the most sensitive to the effects of stress (Behera et al, 2018). Based on the results of this study, it can be stated that the increase in the amount of Cu in the blood serum does not have a significant effect on the increase in the amount of cortisol, there is no relationship between serum Cu and plasma cortisol concentrations.…”

Section: Bloodmentioning

confidence: 68%

The Impact of Breed, Testing Time and Metabolic Profile on the Variation of Copper Concentration in Sheep Blood Serum

Autukaitė

Juozaitienė

Antanaitis

et al. 2021

IJAR

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Background: Copper supplementation in ruminants deserves special attention because of the narrow margin between deficiency and toxicity. The aim of the study was to analyse the relationship between the Cu concentration and other blood parameter values having taken into consideration their physiological limits based on the variation of copper concentration in the three different sheep breeds. Methods: Sixty sheep (35±5 kg) kept on the same farm were studied: the Suffolk (n = 20), the Merino (n = 20) and the Lithuanian blackhead (n = 20). The sheep were selected according to the following parameters: 3.5±0.3 years old, not pregnant during the entire investigation period, clinically healthy. All sheep were kept under the same conditions and throughout the year, were fed at the same time the same ration balanced according to their physiological needs. Individual blood samples were collected on the same day, on monthly basis for the period of one year (April 2018 to May 2019). Blood biochemical parameters as well blood haematology and cortisol concentration were analysed.Result: The highest average value of copper concentration was found in the Merino breed. The study has shown that the lowest number of blood samples with the levels of copper meeting the physiological limit values was found in the native Lithuanian blackhead sheep at the end of the grazing period and in the Merino and the Suffolk breeds - during the coldest winter months. The increase in copper concentration could be related to the stress caused due to the changes in dietary conditions, the variations of ambient temperature and different breed response to these factors.

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Section: Bloodmentioning

confidence: 68%

The Impact of Breed, Testing Time and Metabolic Profile on the Variation of Copper Concentration in Sheep Blood Serum

Autukaitė

Juozaitienė

Antanaitis

et al. 2021

IJAR

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“…Критерієм для визначення найбільш відповідної моделі ТВІ був регресійний аналіз (Behera et al, 2017;Scanavez et al, 2018), що враховував максимальне зниження компонентів молока (вихід і вміст жиру) на одиницю зростання ТВІ. Зазвичай (Hill & Wall, 2014), триваліші спостереження (середні показники погоди за тиждень) краще пояснювали зміни молочної продуктивності та вмісту жиру, ніж більш короткі (3-денні, тестовий день, контрольний день).…”

Section: оцінювання функціонального стану організму в умовах гіпертермії: екологічні і біологічні маркериunclassified

Welfare of dairy cattle in conditions of global climate change

Mylostyvyi¹,

Sejian²

2019

TAVM

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This review of literature sources is devoted to the problem of the influance of climate change on dairy husbandry, as well as approaches to welfare evaluation of the animals and the search for reliable markers of the functional state of the body in conditions of high temperatures. Global climatic changes connected with rising temperatures and fluctuations in weather conditions have the influence on agrarian production in general and dairy husbandry in particular. Decrease of yield capacity and food value of plants as a natural source of forage for animal husbandry, favorable conditions for the development and spread of pathogenic microorganisms, as well as the direct action of extreme high temperatures on health, productivity and reproductive capacity of animals, cause significant economic losses in hot periods of the year, not only for tropical regions of the world, but also for most European countries. Today, among the immediate environmental tasks, priority in the context of global food security is the use of urgent measures and the search for long-term (perspective) strategies to prevent the possible consequences of climate change. It is known that horned cattle, especially highly productive horned cattles, are better tolerate to lower temperatures than high, because their thermoneutral zone, in most reports, is in the range from +5 to +20-25°С. The animals, are being present in an artificial, limited space of premises, unable to show the whole range of natural behavioral reactions, and therefore the level of their welfare depends entirely on the conditions created by man. Under such circumstances, monitoring of the air environment and its direct influence on the physiological state of dairy cattle is better done by calculating special indices that take into account several environmental parameters (temperature, relative humidity, air velocity), which act on the organism of animals in a dynamic complex. However, such indices have not been sufficiently disseminated among domestic researchers. Although for more than half a century, the most commonly used in the world practice for evaluation the comfort of animals during periods of heat, is a temperature-humidity index. It is convenient in calculation and informative enough. Numerous studies indicate a close relationship between temperature-humidity index and animal body temperature, respiratory rate and heart rate, which are widely used to elevation the clinical conditions during thermal stress. The relatively high correlation between temperaturehumidity index and productivity (milk yield and content of its components) allows using this index in prognostic models of influence of environmental on the dairy cattle. A various biological markers of the functional state of animals deserve attention. The possibility using such markers as predictors of the effects of high temperatures on the welfare of animals is reported in the proposed literary review.

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“…The severity of thermal stress should not be determined only by temperature factor: it is also important to include the humidity value as it has a significant impact on perceptible temperature. To include both factors, the use of the temperature-humidity index (THI) has been mentioned by numerous authors (Behera et al 2018). Sheep have developed a set of mechanisms that protect them from overheating.…”

Section: Introductionmentioning

confidence: 99%

“…W hen the physiological mechanisms fail to alleviate the effect of heat load, the body temperature may increase to a point at which animal well-being can be compromised. The change of environmental temperature has a significant impact on physiological processes (Behera et al 2018). Thermal stress causes the decrease in feed intake, disturbance in the metabolism of water, protein, energy and mineral balance, hormonal secretions and blood metabolites (Shahar et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Thermal Stress on Serum Biochemical Profile in Sheep

Autukait

Poškienė

Juozaitienė

et al. 2021

IJAR

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Background: Climatic factors, such as high temperature, high relative humidity, can induce a thermal stress in animals. The phenomenon of mammalian sensitivity to thermal stress, especially in small ruminants, is widely reported in the literature. The present study aimed to analyze temperature and humidity effects on serum metabolic profile and cortisol concentration in sheep. Methods: The experiment was conducted on 40 adult, non-lactating and non-pregnant Suffolk sheep from December 2018 to December 2019. The subgroups were formed by age (two groups): twenty sheep were about 1.5 years old (Group 1) and other twenty - about 3 years old (Group 2). Based on the value of the temperature-humidity index, the following three subgroups were formed: 1) temperature humidity index ≥20; 2) 20 greater than temperature-humidity index greater than 10 and 3) temperature-humidity index less than 10. Blood cortisol concentration and biochemical parameters were measured once per month on the same day, in identical animals. Result: The analysis of biochemical parameters revealed that Group 2 showed significantly higher values for creatinine, phosphorus, zinc and cortisol. All blood indicators, except iron, phosphorus and total bilirubin, were dependent on THI concentration. The highest positive correlation coefficient of cortisol was calculated with urea and total protein. It is concluded that both cortisol and biochemical parameters play a significant role in thermal stress reactions in the Suffolk sheep.

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Identification of best temperature humidity index model for assessing impact of heat stress on milk constituent traits in Murrah buffaloes under subtropical climatic conditions of Northern India

Cited by 11 publications

References 10 publications

The Impact of Breed, Testing Time and Metabolic Profile on the Variation of Copper Concentration in Sheep Blood Serum

The Impact of Breed, Testing Time and Metabolic Profile on the Variation of Copper Concentration in Sheep Blood Serum

Welfare of dairy cattle in conditions of global climate change

The Influence of Thermal Stress on Serum Biochemical Profile in Sheep

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