The phrase "at cage level" is correct and usable in written English.
It can be used in contexts related to animal care, research, or environments where cages are involved, indicating a specific height or area within a cage.
Example: "The temperature should be monitored at cage level to ensure the animals are comfortable."
Alternatives: "at the level of the cage" or "within the cage area".
Differentiation between faeces and uneaten feed estimates at cage level are of great value to both economize the feeding process and reduce waste.
Timed-pregnant Per1-luc rats were housed individually in cages on a 12-hour:12-hour light-dark (LD) cycle (lights on at 08 00h and lights off at 20 00h; 200 lux at cage level during light period).
Body weight (individually) and food intake (at cage level) were monitored over time and blood samples were taken by tail incision after 4 h of fasting (9 a.m. – 1 p.m). at T = 0 and on day 24, 52, 80 and 108, i.e. always at the end of a 3-days HC feeding period in the ALT group.
In this study, mice were placed in cages with running wheels on shelves in a general animal housing room that provided lighting from overhead fluorescent fixtures producing an LD12∶12 photoperiod and yielding about 20 µW/cm2 irradiance at cage level.
All mice had access to food and water ad libitum and were housed in a light dark cycle of 12 : 12 h with 60 lux at cage level.
Average light intensity at cage levels was 60 150 lux, depending on the position in the rack.
Some mice in DD were exposed to a brief light treatment (white light, 100 lux at the cage level, 10 min) at circadian time (CT) 16, where CT 12 was defined by the locomotor activity onset.
The control group (n=10) and 3-NP group (n=10) were exposed to a 12 12 LD (light intensity, 300 lux at the cage level) for 10 days.
A secondary hypothesis was that directly measuring food and water would provide an earlier predictor of disease onset at the cage level compared with mean body weight.
Many features of the mouse and its environment cluster at the cage level (e.g. rack position, date of surgery, or testing order), and can have a strong effect on behavioural measures.
At the cage level, proportional decrease in food consumption (week 3 compared with week 1) predicted mean tumour burden in the lymph nodes (R=0.89, F 1,3)=23.2, P=0.017) and spleen (R=0.90, F 1,3)=27.1, P=0.014) but not in the thymus.
