Article
Biology
Idan Tsadok, Mickey Scheinowitz, Sagi Arieh Shpitzer, Itay Ketko, Yoram Epstein, Ran Yanovich
Summary: The study evaluated the use of the Tcore sensor to monitor rectal temperature under exercise-heat stress, finding it to be feasible and suitable for use in field conditions. The sensor showed accuracy in assessing body core temperature, providing potential benefits for athletes, soldiers, and workers performing intense physical activities under extreme hot conditions.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Plant Sciences
Irum Khan, Jiajie Wu, Muhammad Sajjad
Summary: Terminal heat stress in wheat can cause pollen grain sterility and reduce crop production. This study identified 12 heat-tolerant genotypes with high pollen viability under heat stress conditions. The results suggest that pollen viability is an important trait for selecting heat-tolerant cultivars, and the identified genotypes can be used as genetic resources for breeding higher pollen viability in elevated temperature conditions.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Vincent Ezin, Wassiou Worou Ahanchede, Mathieu Anatole Tele Ayenan, Adam Ahanchede
Summary: This study assessed the effects of heat stress on agro-morphological and physiological traits of six rice varieties. The results showed that BRIZ-8B and BRIZ-10B were the most heat-tolerant varieties and could be recommended for cultivation and breeding programs to improve heat tolerance in rice.
Article
Environmental Sciences
Maria Ruggeri, Yingqi Zhang, Galina V. Aglyamova, Carly D. Kenkel
Summary: The ability of corals to adapt to environmental change is determined by the efficiency of selection acting on heritable genetic variation. Different life stages and genetic backgrounds can influence the thermal stress response and adaptation mechanisms of corals.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biology
P. Brandt, B. Bjerg, P. Pedersen, K. B. Sorensen, L. Rong, T. Huang, G. Zhang
Summary: Global warming and increased production have made sows more susceptible to heat stress, leading to the need for an effective temperature equation to predict the impact of air temperature, humidity, and velocity on sows' respiration rate, rectal temperature, and skin temperature. This study aims to elucidate the relationship between thermal parameters and sows' perception of the environment.
JOURNAL OF THERMAL BIOLOGY
(2022)
Article
Physiology
Andreas D. Flouris, Sean R. Notley, Rebecca L. Stearns, Douglas J. Casa, Glen P. Kenny
Summary: The recommended treatment for exertional heat stroke is immediate, whole-body immersion in water of <10°C until the rectal temperature reaches ≤ 38.6°C. Real-time T-re assessment may not always be possible in field settings or emergency situations. This study defines and validates immersion durations for treating exertional heat stroke at water temperatures of 2-26°C.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2023)
Article
Psychiatry
Xiangfei Meng, Michelle Wang, Kieran J. O'Donnell, Jean Caron, Michael J. Meaney, Yue Li
Summary: Major depressive disorder (MDD) is a prevalent mental disorder. A risk prediction tool has been developed to identify MDD patients and discover genetic variants. The tool accurately categorizes the risk of MDD and identifies meaningful genetic associations, shedding light on future research.
TRANSLATIONAL PSYCHIATRY
(2022)
Article
Biology
Geqi Yan, Kaixin Liu, Ze Hao, Zhengxiang Shi, Hao Li
Summary: This study investigated the effects of cow-related factors on the rectal temperature and respiration rate of lactating dairy cows under different heat stress conditions. The results showed that body posture, milk yield, days in milk, and parity had significant impacts on the parameters measured. The study highlighted the importance of considering these factors in heat stress responses and threshold assessments.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Biophysics
Ayodele Stephen Ake, Joseph Olusegun Ayo, Tagang Aluwong, Aliyu Mohammed, Ndazo Salka Minka
Summary: This study aimed to evaluate the effects of melatonin administration on rectal and body surface temperature (RT and BST) responses, as well as their circadian rhythmicity, in donkeys subjected to packing during the hot-dry season. The results showed that melatonin administration resulted in lower RT and BST in the donkeys. Melatonin exerted biphasic effects on the circadian rhythms of RT and BST, reducing body temperatures during the photophase and increasing them during the scotophase. Overall, melatonin may enhance the packing output in donkeys during the hot-dry season.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Rajalaxmi Behera, Atish Kumar Chakravarty, Neeraj Kashyap, Adhikari Sahu
Summary: The present study investigated the impact of temperature humidity index (THI) on the expected breeding value (EBV) for daily milk yield (DMY) and monthly test day fat% (MTDF%) and monthly test day SNF% (MTDSNF%) of Murrah buffaloes. The results showed that climatic factors have a significant influence on milk production and constituent traits, and proper management should be followed during heat stress and critical heat stress periods to improve the production performance of Murrah buffaloes.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Agriculture, Dairy & Animal Science
H. Luo, Luiz F. Brito, X. Li, G. Su, J. Dou, W. Xu, X. Yan, H. Zhang, G. Guo, L. Liu, Y. Wang
Summary: Genetic selection for improved climatic resilience in high-producing dairy cattle is crucial. Physiological indicators of heat stress response, including rectal temperature, respiration rate score, and drooling score, were found to have low heritability. Developing a selection index incorporating these indicators can help improve heat tolerance in dairy cattle.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Katlego P. Ncongwane, Joel O. Botai, Venkataraman Sivakumar, Christina M. Botai, Abiodun M. Adeola
Summary: The study shows that increasing air temperature and high humidity in most parts of South Africa due to ongoing climate change may intensify heat exposure and lead to adverse health effects like heatstroke. Analysis of over two decades of data revealed that 42 stations had high climatological annual median values (>32 degrees C), predominantly in low altitude regions along coastlines.
Article
Veterinary Sciences
Qiufen Li, Jingxin Ouyang, Chenxi Deng, Hua Zhou, Jinming You, Guanhong Li
Summary: This study found that heat stress can increase rectal temperature, alter hormone levels, suppress humoral immunity, and change cecal microflora composition in broiler chickens. However, dietary supplementation of tryptophan (Trp) can decrease rectal temperature, improve microbiota community and Trp metabolism, and enhance humoral immunity in heat-stressed broilers.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
M. Zhou, T. T. T. Huynh, P. W. G. Groot Koerkamp, I. D. E. van Dixhoorn, T. Amon, A. J. A. Aarnink
Summary: The purpose of this study was to investigate the effects of increasing ambient temperature on heat loss from the skin surface and respiratory system of dairy cows at different relative humidity and air velocity levels. The results showed that skin heat loss decreased with increasing ambient temperature, while skin latent heat loss increased. Relative humidity and air velocity had no significant effect on heat loss. Under long exposure conditions, cows lost more heat compared to short exposure conditions.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Iwona Janczarek, Anna Wisniewska, Ewelina Tkaczyk, Elzbieta Wnuk-Pawlak, Beata Kaczmarek, Marta Liss-Szczepanek, Witold Kedzierski
Summary: This study aimed to investigate the effectiveness of various water cooling methods on horses after medium-intensity exercise. The results showed that cooling the lower body parts with cold water was the most efficient method and can be recommended for practical use.
Article
Developmental Biology
Viju Vijayan Pillai, Tiffany G. Kei, Shailesh Gurung, Moubani Das, Luiz G. B. Siqueira, Soon Hon Cheong, Peter J. Hansen, Vimal Selvaraj
Summary: TGF beta 1 plays a crucial role in the differentiation of trophoblast cells, and inhibition of RhoA/Rock promotes self-renewal and proliferation.
Article
Multidisciplinary Sciences
Thiago F. Amaral, Joao Gabriel Viana de Grazia, Luany Alves Galvao Martinhao, Felipe De Col, Luiz Gustavo B. Siqueira, Joao Henrique M. Viana, Peter J. Hansen
Summary: The study aimed to optimize in vitro embryo production in cattle. The results showed that the proportion of embryos becoming blastocysts in culture was influenced by the type of serum in the medium and the addition of specific embryokines. The sire also had a significant effect on embryonic development and pregnancy rate.
SCIENTIFIC REPORTS
(2022)
Article
Agriculture, Dairy & Animal Science
L. M. Jensen, E. A. Jannaman, J. E. Pryce, A. De Vries, P. J. Hansen
Summary: Heat stress has negative consequences for milk production and reproduction of dairy cattle, and there is genetic variation among cows in their ability to resist these effects. This study evaluated the effectiveness of the Australian breeding value for heat tolerance (ABVHT) in predicting cow differences in the effects of heat stress on body temperature regulation, milk production, and reproductive function.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
F. Sosa, A. T. Carmickle, L. J. Oliveira, M. Sagheer, M. Saleem, F. H. Yu, M. D. Altman, S. Dikmen, A. C. Denicol, T. S. Sonstegard, C. C. Larson, P. J. Hansen
Summary: This study suggests that the SLICK1 mutation does not alter the abundance of sweat glands in the skin, but it does modify the functional properties of the sweat glands.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
M. Sofia Ortega, Derek M. Bickhart, Kelsey N. Lockhart, Daniel J. Null, Jana L. Hutchison, Jennifer C. McClure, John B. Cole
Summary: The study presents a comprehensive framework for identification and validation of recessive alleles that represent genetic risk. Using Holstein haplotype 2 as an example, it demonstrates how the framework can be used to detect and confirm genetic defects that affect conception rate and stillbirths. The study also identifies specific variants associated with Holstein haplotype 2 and validates their function using knockout embryos.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Cell Biology
Froylan Sosa, Peter J. Hansen
Summary: The study found that CSF2 can protect the developmental competence of bovine embryos under heat shock, especially at the zygote and two-cell stages.
Article
Agriculture, Dairy & Animal Science
F. L. Guinan, G. R. Wiggans, H. D. Norman, J. W. Durr, J. B. Cole, C. P. Van Tassell, I. Misztal, D. Lourenco
Summary: Genomic selection accelerates genetic changes in populations by increasing accuracy and decreasing generation interval. The genetic gain and inbreeding levels of US dairy cattle breeds since the implementation of genomic evaluations in 2009 were examined. The Holstein and Jersey breeds have seen the most significant increase in genetic gain since then.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Baris Guner, Melih Erturk, Mehmet Dursun, Buse Ozturk, Gulnaz Yilmazbas-Mecitoglu, Abdulkadir Keskin, Serdal Dikmen, Ahmet Gumen
Summary: The study aimed to determine the oestrous expression rate in Holstein cows and the impact of oestrous expression prior to the progesterone-based Ovsynch protocol on pregnancy rate. The results showed that cows showing oestrus before or after the second GnRH injection had a higher pregnancy rate compared to cows that did not show oestrus.
REPRODUCTION IN DOMESTIC ANIMALS
(2023)
Article
Biochemistry & Molecular Biology
Maria Belen Rabaglino, Dessie Salilew-Wondim, Adriana Zolini, Dawit Tesfaye, Michael Hoelker, Pat Lonergan, Peter J. J. Hansen
Summary: This study developed a gene signature model to predict embryonic competence for survival by integrating transcriptomic data from blastocysts and elongating conceptuses. The potential biomarkers were validated with independent embryonic data sets using machine-learning algorithms. The results showed that the predictions of embryonic development fate based on these biomarkers were highly accurate.
Article
Agriculture, Dairy & Animal Science
Camila J. Cuellar, Muhammad Saleem, L. M. Jensen, P. J. Hansen
Summary: This study investigates the relationship between the ability of cattle to regulate body temperature during heat stress and their milk production capacity, as well as the impact of genetic groups on the seasonal depression in milk yield. The findings suggest that Brown Swiss and crossbred cows have better body temperature regulation during heat stress compared to Holsteins, but they are not more resistant to heat stress in terms of milk yield. Therefore, genetic differences in thermotolerance may exist independently of regulation of body temperature.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Reproductive Biology
Froylan Sosa, Kyungjun Uh, Jessica N. Drum, Katy S. Stoecklein, Kimberly M. Davenport, M. Sofia Ortega, Kiho Lee, Peter J. Hansen
Summary: This study investigates the role of CSF2RA in the development of bovine embryos. The results show that inactivation of CSF2RA leads to lower development rates of embryos to the blastocyst stage and changes in gene expression. The CSF2 signaling pathway enhances the likelihood of blastocyst formation and affects functions such as cell signaling and glycosylation.
REPRODUCTION AND FERTILITY
(2023)
Article
Cell Biology
Quinn A. Hoorn, Maria Belen Rabaglino, Tatiane S. Maia, Masroor Sagheer, Dailin Fuego, Zongliang Jiang, Peter J. Hansen
Summary: The study characterizes the expression of genes encoding cell signaling ligands in bovine endosalpinx and endometrium and analyzes spatial changes in gene expression. It finds that these cell signaling ligands may influence early embryonic development and highlights the distinct expression profiles of the oviduct and endometrium.
PHYSIOLOGICAL GENOMICS
(2023)
Article
Developmental Biology
Daniel L. Stanton, Alexander Graf, Tatiane S. Maia, Helmut Blum, Zongliang Jiang, Peter J. Hansen
Summary: It is not known when a functional circadian clock is established in the developing embryo. Lack of expression of key genes involved in the clock mechanism is indicative that a functional circadian clock mechanism is absent in the mammalian preimplantation embryo through the blastocyst stage of development.
Article
Agriculture, Dairy & Animal Science
Quinn A. Hoorn, Gabriel A. Zayas, Eduardo E. Rodriguez, Laura M. Jensen, Raluca G. Mateescu, Peter J. Hansen
Summary: This study identified QTLs and candidate SNPs associated with pregnancy outcomes in beef heifers, including a large QTL associated with a group of protocadherin genes. Confirmation of these associations with larger populations could lead to the development of genomic predictions of reproductive function in beef cattle. Moreover, additional research is warranted to study the function of candidate genes associated with QTLs.
JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Peter J. Hansen
Summary: Graduate education is crucial for academic scientists as it carries the responsibility of guiding students towards their career and life goals. Being a good mentor involves developing an education framework and adapting it to each student's needs based on experience, advice, and individual personality. Most importantly, mentors should be invested in the success and well-being of their students.
JOURNAL OF ANIMAL SCIENCE
(2023)