Evaluation of heat stress threshold and impacts on milk yield in dairy cattle crossbreds in a hot and humid climate

Michael, Predith; Cruz, Clement R. de; Nor, Norhariani Mohd; Jamli, Saadiah; Goh, Yong Meng

doi:10.1007/s00704-023-04549-3

Cited by 3 publications

(3 citation statements)

References 35 publications

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Section: Food Security Under Heat Stressmentioning

confidence: 99%

“…Heat stress impacts food security as it affects wild plant, fish, and animal production, as well as crop, aquiculture, and farm animal production. Studies have documented the negative impacts of heat stress on rice [132], fish [133], and farm animal [20] productivity, respectively. Other examples include "No farmer no food" [134], the interaction between food production and climate change [135], decreased cucurbits production in North Africa due to heat stress [136], decreased salmon production under future climate change [137], food and water insecurity [138], and global agri-food trade under climate change [139].…”

Section: Food Security Under Heat Stressmentioning

confidence: 99%

“…The ideal temperature range for most crops and other organisms is between 20 to 30 • C [18]. Heat stress can damage crops, cattle, poultry, and aquaculture production [19,20]. Heat stress also negatively affects biodiversity [21], life quality in cities [22], and workers' health and productivity [23].…”

Section: Introductionmentioning

confidence: 99%

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Nano-Food Farming Approaches to Mitigate Heat Stress under Ongoing Climate Change: A Review

El-Ramady,

Prokisch,

El-Mahrouk

et al. 2024

Agriculture

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Increased heat stress is a common feature of global climate change and can cause adverse impacts on crops from germination through maturation and harvest. This review focuses on the impacts of extreme heat (>35 °C) on plants and their physiology and how they affect food and water security. The emphasis is on what can be done to minimize the negative effects of heat stress, which includes the application of various materials and approaches. Nano-farming is highlighted as one promising approach. Heat is often combined with drought, salinity, and other stresses, which together affect the whole agroecosystem, including soil, plants, water, and farm animals, leading to serious implications for food and water resources. Indeed, there is no single remedy or approach that can overcome such grand issues. However, nano-farming can be part of an adaptation strategy. More studies are needed to verify the potential benefits of nanomaterials but also to investigate any negative side-effects, particularly under the intensive application of nanomaterials, and what problems this might create, including potential nanotoxicity.

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Section: Food Security Under Heat Stressmentioning

confidence: 99%

Section: Food Security Under Heat Stressmentioning

confidence: 99%

See 1 more Smart Citation

Nano-Food Farming Approaches to Mitigate Heat Stress under Ongoing Climate Change: A Review

El-Ramady,

Prokisch,

El-Mahrouk

et al. 2024

Agriculture

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Analysis of rainfall variability and impact on the start and end dates of rainy seasons in the urban humid tropical zone: a case of the Yaoundé Town, Cameroon (Central Africa)

Nsangou,

Mfonka,

Kpoumié

et al. 2024

Arab J Geosci

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Impact of Heat Stress on Milk Yield, Milk Fat-to-Protein Ratio, and Conception Rate in Thai–Holstein Dairy Cattle: A Phenotypic and Genetic Perspective

Boonkum,

Teawyoneyong,

Chankitisakul

et al. 2024

Animals

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Heat stress severely affects dairy cattle production and reproduction performances in tropical regions. Genetic selection to maintain adequate yield and reproductive performance while enhancing their ability to withstand heat is essential for improving the genetics of dairy cows. Therefore, in this study, we aimed to estimate genetic parameters affecting production and reproduction performances under heat stress conditions in dairy cattle and to investigate the threshold point of heat stress for milk yield (MY), milk fat-to-protein ratio (FPR), and conception rate (CR) in Thai–Holstein dairy cattle. The data included 168,124 records related to MY and milk FPR and 21,278 records of CR in Thai–Holstein dairy cattle, covering the period from 1990 to 2007. A multiple-trait threshold-linear random regression model based on a Bayesian approach via Gibbs sampling was used to estimate variance components, genetic parameters (heritability values, and genetic correlations), and decline rates for each studied trait. The threshold point of heat stress was identified as a temperature and humidity index (THI) of 76. At THI76, a decline was observed in the MY, milk FPR, and CR of Thai dairy cattle. The heritability estimates for MY, milk FPR and CR were 0.347 ± 0.032, 0.293 ± 0.021, and 0.032 ± 0.001, respectively. The genetic correlation between MY and milk FPR and MY and CR were −0.24 and −0.53, respectively, whereas those between milk FPR and heat tolerance as well as between CR and heat tolerance were −0.48 and −0.49, respectively. In addition, the decline rates in MY, milk FPR, and CR were found to be associated with a high percentage of Holstein genetics. In conclusion, the results obtained in this study reveal that the simultaneous consideration of the MY, milk FPR, CR, and heat tolerance traits of Thai–Holstein dairy cattle is possible. In addition, developing a genetic model that incorporates THI is essential for sustainably addressing heat stress problems.

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Evaluation of heat stress threshold and impacts on milk yield in dairy cattle crossbreds in a hot and humid climate

Cited by 3 publications

References 35 publications

Nano-Food Farming Approaches to Mitigate Heat Stress under Ongoing Climate Change: A Review

Nano-Food Farming Approaches to Mitigate Heat Stress under Ongoing Climate Change: A Review

Analysis of rainfall variability and impact on the start and end dates of rainy seasons in the urban humid tropical zone: a case of the Yaoundé Town, Cameroon (Central Africa)

Impact of Heat Stress on Milk Yield, Milk Fat-to-Protein Ratio, and Conception Rate in Thai–Holstein Dairy Cattle: A Phenotypic and Genetic Perspective

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