Effect of early nutrition on abdominal fat in broilers

Area of Science:

• Animal Science
• Poultry Nutrition
• Broiler Production

Background:

• Abdominal fat deposition is a critical economic trait in broiler production.
• Early nutrition plays a significant role in long-term broiler development and carcass composition.

Purpose of the Study:

• To investigate the impact of varying protein and fat levels in isocaloric diets during the first week of life on subsequent abdominal fat pad size in male broiler chicks.
• To determine if early dietary interventions influence abdominal fat accumulation later in the growth period.

Main Methods:

• Three experiments were conducted using male broiler chicks fed different isocaloric diets varying in protein and fat content during the first week.
• Subsequent feeding regimens varied, with some chicks receiving standard diets while others continued on specific protein/fat formulations.
• Abdominal fat pad size was measured at different time points (4 and 7 weeks).

Main Results:

• In experiment 1, chicks fed 28% protein/low fat for 7 days followed by 23% protein/high fat resulted in significantly higher abdominal fat.
• In experiment 2, chicks fed 28% protein (low or high fat) diets during the first week showed significantly higher abdominal fat at 7 weeks of age.
• No significant differences in abdominal fat pad size were observed in the third experiment within each diet series when chicks received the same diets from 7 to 49 days.

Conclusions:

• Early nutrition, specifically high protein levels in the first week, can influence abdominal fat deposition in broiler chickens.
• Dietary strategies during the initial growth phase may have lasting effects on carcass fat content.
• Further research is needed to optimize early feeding programs for desired fat deposition outcomes.