Sex-specific effects of dietary restriction on physiological variables in Japanese quails

Nutritional limitation is a common phenomenon in nature that leads to trade-offs among processes competing for limited resources. These trade-offs are mediated by changes in physiological traits such as growth factors and circulating lipids. However, studies addressing the sex-specific effect of nutritional deficiency on these physiological variables are limited in birds. We used dietary restriction to mimic the depletion of resources to various degrees and investigated sex-specific effects on circulating levels of insulin-like growth factor 1 (IGF-1) and triglycerides in Japanese quails (Coturnix japonica) subjected to ad libitum, 20%, 30% or 40% restriction of their daily requirement, for two weeks. We also explored the association of both physiological variables with body mass and egg production. While dietary restriction showed no effects on circulating IGF-1, this hormone exhibited a marked sexual difference, with females having 64.7% higher IGF-1 levels than males. Dietary restric..., We used dietary restriction to mimic resource depletion and examined its effects on IGF-1 (ng/mL) and triglycerides (mmol/L) in Japanese quails. Quails were subjected to ad libitum feeding or 20%, 30%, and 40% restriction levels for 14 days. We colleced plasma samples and measured IGF-1 and triglycerides levels at the beginning of the experiment (day 0), on days 7 and on day 14 of the restriction period. We measured plasma IGF-1 levels using a competitive IGF-1 Enzyme-linked immunosorbent assay (ELISA) (https://doi.org/10.1007/s00265-020-2821-6). We mesured plasma triglyceride levels using a photometric method with a half-automatic analyser (Lab-Analyse, Orvostechnika Ltd., Budapest, Hungary)., , # Data from: Sex-specific effects of dietary restriction on physiological variables in Japanese quails

[https://doi.org/10.5061/dryad.stqjq2cb0](https://doi.org/10.5061/dryad.stqjq2cb0)

The dataset includes plasma levels of insulin like growth factor 1 (IGF-1) and triglycerides from a dietary restriction experiment in Japanese quails. Quails aged nine weeks were subjected to either ad libitum feeding or 20%, 30%, and 40% restrictions for 14 days. Plasma samples were collected on day zero (initial), day seven (week 1), and day forteen (week 2) of the experiment period. Plasma levels of IGF-1 were measured using a competitive Enzyme-linked immunosorbent assay (ELISA), while triglyceride levels were determined using a photometric method. 

## Description of the data and file structure

# 1. Title: Data from: Sex-specific effects of dietary restriction on physiological variables in Japanese quails

## 2. Author Information

### A. Principal Investigator (Contact Information)

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