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Related Experiment Videos

Energy utilization in newly hatched chicks.

Y Noy1, D Sklan

  • 1Faculty of Agriculture, Hebrew University, Rehovot, Israel.

Poultry Science
|January 8, 2000
PubMed
Summary
This summary is machine-generated.

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Newly hatched chicks can absorb nutrients, but optimal absorption of carbohydrates and amino acids depends on digestive enzyme development and adequate sodium for nutrient transporters. Fatty acid absorption is high at hatch.

Area of Science:

  • Animal Science
  • Poultry Nutrition
  • Gastrointestinal Physiology

Background:

  • Posthatch feeding strategies significantly impact broiler chick development and nutrient utilization.
  • Early life nutrition is critical for establishing efficient intestinal function and growth.
  • Understanding nutrient absorption capacity at hatch is key to optimizing broiler performance.

Purpose of the Study:

  • To investigate the impact of early feed access on broiler body composition and intestinal development.
  • To determine the intestinal absorption efficiency of key nutrients (glucose, methionine, oleic acid) from hatch to 4 days posthatch.
  • To elucidate the factors influencing nutrient uptake in the early posthatch period.

Main Methods:

  • Comparative analysis of body weight, composition, and intestinal changes in fed versus feed-deprived broiler chicks.

Related Experiment Videos

  • In vivo intestinal absorption studies using radiolabeled nutrients and a non-absorbed reference substance.
  • In situ duodenal uptake experiments to assess nutrient absorption from different solutions.

    • Main Results:

    • Feed-deprived chicks experienced body weight loss but showed significant increases in intestinal weight and protein.
    • Fed chicks exhibited growth and substantial intestinal development, with higher nutrient utilization.
    • Fatty acid absorption was high (>80%) at hatch, while glucose and methionine absorption were lower, improving significantly by day 4.
    • Duodenal uptake revealed higher oleic acid absorption from yolk compared to glucose and methionine.

    Conclusions:

    • The broiler small intestine possesses the inherent capacity for nutrient absorption at hatch.
    • Efficient absorption of carbohydrates and amino acids is contingent upon the maturation of digestive enzymes and nutrient transporters.
    • Early nutritional management is crucial for supporting intestinal development and maximizing nutrient assimilation in broiler chickens.