[Weight increase in chickens subjected to hypoalimentation]

Area of Science:

• Animal Science
• Physiology
• Nutritional Science

Context:

• Investigating the long-term effects of nutritional restriction on chicken growth and recovery.
• Examining the physiological adaptations of young chickens to reduced food intake.
• Comparing compensatory growth patterns following different feeding regimens.

Purpose:

• To analyze the impact of a 26-day period of hypo-nourishment on chicken growth.
• To compare the compensatory growth and recovery speed in hypo-nourished chickens versus those subjected to intermittent fasting.
• To explore the underlying reasons for differences in recovery speed between the two groups.

Summary:

• Fourteen-day-old chickens were subjected to a 26-day period of reduced nutrition, resulting in stunted growth (25.2% of normal weight). Upon refeeding, these chickens exhibited hyperphagia and accelerated growth rates exceeding controls of the same age or weight.
• While hypo-nourished chickens achieved approximately 80% weight recovery, their recovery speed was significantly lower than that of chickens that experienced repeated periods of fasting.
• The study discusses the physiological factors contributing to the diminished recovery speed in chickens that underwent prolonged hypo-nourishment.

Impact:

• Provides insights into the metabolic and physiological consequences of severe growth restriction in poultry.
• Highlights the differential recovery dynamics between continuous undernutrition and intermittent fasting.
• Informs strategies for optimizing animal welfare and growth performance in livestock production systems.