Rodent

A real-time health notification system aimed at enhancing the interaction between animal care staff and researchers promotes animal welfare

Regardless of the microbiological status of an animal facility, research animals may experience health problems, leading to pain, suffering and distress. Simple and efficient tools are needed to collect data systematically, allowing researchers to react and resolve animals' health issues....

Year Published: 2021Topics: Welfare AssessmentAnimal Type: All/General, Chinchilla, Gerbil, Guinea Pig, Hamster, Mouse, Other Rodent, Rat, Rodent

Citation: Yatkin, E., Kulmala, N., Saukkonen, A. et al. 2021. A real-time health notification system aimed at enhancing the interaction between animal care staff and researchers promotes animal welfare. Laboratory Animals 55(3), 281-289.

Comparison of the effects of osmotic pump implantation with subcutaneous injection for administration of drugs after total body irradiation in mice

The increasing potential for radiation exposure from nuclear accidents or terrorist activities has intensified the need to develop pharmacologic countermeasures against injury from total body irradiation (TBI). Many initial experiments to develop and test these countermeasures utilize murine irradiation models....

Year Published: 2021Topics: Cannulation, Catheterization, & Intubation, Disease/Experimental Model, Drug/Substance AdministrationAnimal Type: Mouse, Rodent

Citation: Koch, A. L., Rusnak, M., Peachee, K. et al. 2021. Comparison of the effects of osmotic pump implantation with subcutaneous injection for administration of drugs after total body irradiation in mice. Laboratory Animals 55(2), 142-149.

When to wean? A visual guide to Black, White, and Agouti mouse pup growth P14 – P28

Laboratory mouse pups are commonly weaned between postnatal day 21–28. Utilization of an exact wean date postpartum is a concrete metric for mouse colony management, but variation can result such as: developmental differences among genetically modified strains, personnel differences in...

Year Published: 2021Topics: Rearing & WeaningAnimal Type: Mouse, Rodent

Citation: Brogan, E., Kirchain, S. 2021. When to wean? A visual guide to Black, White, and Agouti mouse pup growth P14 – P28. Laboratory Animal Science Professional 9(3) (May/June), 46-48.

Effects of cling film draping material on body temperature of mice during surgery

General anesthesia induces many systemic effects, including thermoregulatory impairment and subsequent perioperative hypothermia. Due to the animals' small size, monitoring and maintaining body temperatures in laboratory rodents during anesthesia is important for successful surgical outcomes and prompt anesthetic recovery. Draping...

Year Published: 2021Topics: Surgery & Post-OpAnimal Type: Mouse, Rodent

Citation: Celeste, N. A., Emmer, K. M., Bidot, W. A. et al. 2021. Effects of cling film draping material on body temperature of mice during surgery. JAALAS 60(2), 195-200.

A validated smartphone-based electrocardiogram reveals severe bradyarrhythmias during immobilizing restraint in mice of both sexes and four strains

Mouse handling and restraint affect behavior, physiology, and animal welfare, yet little information is available on how various mouse restraint methods affect cardiovascular parameters. We validated the use of a smartphone-based ECG sys- tem in mice by performing simultaneous smartphone...

Year Published: 2021Topics: RestraintAnimal Type: Mouse, Rodent

Citation: Labitt, R. N., Oxford, E. M., Davis, A. K. et al. 2021. A validated smartphone-based electrocardiogram reveals severe bradyarrhythmias during immobilizing restraint in mice of both sexes and four strains. JAALAS 60(2), 201-212.

Comparison of two hair removal methods in Sprague–Dawley rats (Rattus norvegicus)

Rats commonly undergo surgery for research purposes. However, the effects of different methods of hair removal on wound healing and surgical site infections (SSI) in rats has not been evaluated. The current study evaluated 2 hair removal methods, clipping with...

Year Published: 2021Topics: Surgery & Post-OpAnimal Type: Rat, Rodent

Citation: Rowley, N. L., Ramos-Rivera, E., Raiciulescu, S. et al. 2021. Comparison of two hair removal methods in Sprague–Dawley rats (Rattus norvegicus). JAALAS 60(2), 213-220.

Effects of daytime blue-enriched LED light on physiologic parameters of three common mouse strains maintained on an IVC system

Light has been a crucial part of everyday life since the beginning of time. Most recently, light-emitting diode (LED) light enriched in the blue-appearing portion of the visible spectrum (465 to 485 nm), which is more efficient in energy use,...

Year Published: 2021Topics: Husbandry & ManagementAnimal Type: Mouse, Rodent

Citation: Voros, G. B., Dauchy, R. T., Myers, L. et al. 2021. Effects of daytime blue-enriched LED light on physiologic parameters of three common mouse strains maintained on an IVC system. JAALAS 60(3), 259-271.

Effects of oxygen supplementation on injectable and inhalant anesthesia in C57BL/6 mice

Oxygen supplementation is rarely considered when anesthetizing laboratory mice, despite reports that mice become profoundly hypoxic under anesthesia. Little is known about the effects of hypoxia on anesthetic performance. This article focuses on the effects of oxygen supplementation on physiologic...

Year Published: 2021Topics: Anesthesia & SedationAnimal Type: Mouse, Rodent

Citation: Blevins, C. E., Celeste, N. A., Marx, J. O. 2021. Effects of oxygen supplementation on injectable and inhalant anesthesia in C57BL/6 mice. JAALAS 60(3), 289-297.

Effects of analgesics on tumor growth in mouse models of prostate cancer bone metastasis

Murine models of tumor development often require invasive procedures for tumor implantation, potentially causing pain or distress. However, analgesics are often withheld during implantation because of concerns that they may adversely affect tumor development. Previous studies examining the effects of...

Year Published: 2021Topics: Disease/Experimental ModelAnimal Type: Mouse, Rodent

Citation: Xu, J. J., Thurston, S. E., Robinson, T. J. et al. 2021. Effects of analgesics on tumor growth in mouse models of prostate cancer bone metastasis. JAALAS 60(3), 341-348.

Effects of pair housing on patency of jugular catheters in rats (Rattus norvegicus)

Chronic vascular access devices are widely used in a variety of species for repeated blood sampling or substance administration. Jugular catheters are commonly used for studying addiction-related behaviors in rats. Rats with catheters have historically been individually housed for the...

Year Published: 2021Topics: Cannulation, Catheterization, & Intubation, External Bodily Equipment, Social Housing & CompanionshipAnimal Type: Rat, Rodent

Citation: Krueger, L. D., Chang, S. E., Motoc, M. et al. 2021. Effects of pair housing on patency of jugular catheters in rats (Rattus norvegicus). JAALAS 60(3), 357-364.