Biological Sampling & Physiological Measurement

Non-invasive quantification of faecal and urine reproductive hormone metabolites in the naked mole-rat (Heterocephalus glaber)

The naked mole-rat (Heterocephalus glaber) occurs in colonies with a distinct dominance hierarchy, including one dominant, breeding female (the queen), 1–3 breeding males, and non-reproductive subordinates of both sexes that are reproductively suppressed while in the colony. To non-invasively evaluate...

Year Published: 2023Topics: Biological Sampling & Physiological MeasurementAnimal Type: Rat, Rodent

Citation: Majelantle, T. L., Ganswindt, A., Ganswindt, S. B. et al. 2023. Non-invasive quantification of faecal and urine reproductive hormone metabolites in the naked mole-rat (Heterocephalus glaber). Animals 13(19), 3039.

Non-invasive assessment of the intraventricular pressure using novel color M-mode echocardiography in animal studies: Current status and future perspectives in veterinary medicine

The assessment of diastolic function has received great interest in order to comprehend its crucial role in the pathophysiology of heart failure and for the early identification of cardiac events. Silent changes in the intraventricular flow (IVF) dynamics occur before...

Year Published: 2023Topics: Biological Sampling & Physiological Measurement, Cannulation, Catheterization, & IntubationAnimal Type: All/General

Citation: Mandour, A. S., Farag, A., Helal, M. A. Y. et al. 2023. Non-invasive assessment of the intraventricular pressure using novel color M-mode echocardiography in animal studies: Current status and future perspectives in veterinary medicine. Animals 13(15), 2452.

Acclimation and blood sampling: Effects on stress markers in C57Bl/6J mice

Blood sampling in rodents is common practice in scientific studies. Some of the refined methods widely used are the puncture of the saphenous vein or tail vein, or even tail docking. The handling needs of these different blood sampling methods...

Year Published: 2023Topics: Biological Sampling & Physiological MeasurementAnimal Type: Mouse, Rodent

Citation: Marin, N., Moragon, A., Gil, D. et al. 2023. Acclimation and blood sampling: Effects on stress markers in C57Bl/6J mice. Animals 13(18), 2816.

Noninvasive sampling of the small intestinal chyme for microbiome, metabolome and antimicrobial resistance genes in dogs, a proof of concept

Background The gastrointestinal microbiome and metabolome vary greatly throughout the different segments of the gastrointestinal tract, however current knowledge of gastrointestinal microbiome and metabolome in health and disease is limited to fecal samples due to ease of sampling. The engineered...

Year Published: 2023Topics: Biological Sampling & Physiological MeasurementAnimal Type: Dog

Citation: Menard, J., Bagheri, S., Menon, S. et al. 2023. Noninvasive sampling of the small intestinal chyme for microbiome, metabolome and antimicrobial resistance genes in dogs, a proof of concept. Animal Microbiome 5(1), 64.

Moving away from soiled bedding sentinels—The (R)evolution in rodent health screening

Traditional health monitoring methods consist of Soiled Bedding Sentinels (SBS), with animals exposed to dirty bedding from colony animals, which require the euthanasia of SBS. Numerous studies have demonstrated that SBS may not accurately represent a colony's health status. During...

Year Published: 2023Topics: Biological Sampling & Physiological MeasurementAnimal Type: Mouse, Rat, Rodent

Citation: Esparza, K. 2023. Moving away from soiled bedding sentinels—The (R)evolution in rodent health screening. Animal Technology and Welfare 22(2), 158–160.

Noninvasive measurement of blood calcium concentration using electrocardiography in peripartum Jersey cows

We previously developed a noninvasive method for measuring blood calcium concentration (Ca) in Holstein cows on site using electrocardiographic (ECG) variables and calving number, based on a high positive correlation between Ca. Jersey cows easily develop peripartum hypocalcemia compared with...

Year Published: 2023Topics: Biological Sampling & Physiological MeasurementAnimal Type: Cattle

Citation: Chiba, Y., Nozaki, I., Itoh, M. et al. 2023. Noninvasive measurement of blood calcium concentration using electrocardiography in peripartum Jersey cows. Frontiers in Veterinary Science 10.

Predicting the rectal temperature of dairy cows using infrared thermography and multimodal machine learning

The paper proposes an approach for estimating the rectal temperature of dairy cows based on the non-invasive real-time monitoring of their respiration rates and the temperature-humidity index (THI) of the environment, combined with the analysis of infrared images. We use...

Year Published: 2023Topics: Biological Sampling & Physiological MeasurementAnimal Type: Cattle

Citation: Brezov, D., Hristov, H., Dimov, D. et al. 2023. Predicting the rectal temperature of dairy cows using infrared thermography and multimodal machine learning. Applied Sciences 13(20), 11416.

Physiologic effects of housing rats in metabolic cages

Currently, metabolic cages (MC) are the only way to achieve serial sampling of urine and feces in rodents. However, the use of this caging creates a dramatic change from an animal's usual microenvironment. Here we sought to examine the effect...

Year Published: 2022Topics: Biological Sampling & Physiological Measurement, HousingAnimal Type: Rat, Rodent

Citation: Giral, M., Armengol, C., Gavaldà, A. 2022. Physiologic effects of housing rats in metabolic cages. Comparative Medicine 72(5), 298–305.

Urinary cytokine measurements do not reflect surgery-induced inflammation in rhesus macaques

Measurement of the health and disease status of free-ranging primates is often limited by a lack of available biomarkers of immune activation and inflammation that can be applied noninvasively via the measurement of urine or fecal samples. Here, we evaluate...

Year Published: 2023Topics: Biological Sampling & Physiological Measurement, Surgery & Post-OpAnimal Type: Macaque, Nonhuman Primate

Citation: Higham, J. P., Cooper, E. B., Whalen, C. et al. 2023. Urinary cytokine measurements do not reflect surgery-induced inflammation in rhesus macaques. American Journal of Primatology 85(8), e23506.

Can the emotional state of calves be noticed by their facial expression and heart rate?

The aim of this study was to identify whether or not dairy calves change their facial expression and heart rate according to their emotional state when subjected to a stroking or umbrella stimulus. Thirty-two mixed-breed Holstein calves of different ages...

Year Published: 2023Topics: Biological Sampling & Physiological Measurement, Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: Cattle

Citation: Machado, M., Freitas Silveira, R. M., Machado Bittar, C. M. et al. 2023. Can the emotional state of calves be noticed by their facial expression and heart rate? Applied Animal Behaviour Science 260, 105874.