Related Experiment Videos
Summary
Supplemental sodium chloride in broiler breeder diets did not affect egg production but higher levels reduced fertility and hatchability. Current sodium recommendations may exceed requirements, potentially impacting reproductive performance.
Area of Science:
- Animal Science
- Poultry Nutrition
Background:
- Broiler breeders require precise nutrition for optimal reproductive performance.
- Dietary sodium chloride (NaCl) is essential, but excess levels can negatively impact poultry health and productivity.
Purpose of the Study:
- To evaluate the effects of varying supplemental sodium chloride levels on the reproductive performance of Cobb broiler breeders.
- To determine optimal dietary sodium chloride levels for broiler breeder hens.
Main Methods:
- Two experiments using Cobb broiler breeders (32 weeks of age) over 224 days.
- Corn-soybean meal diets supplemented with sodium chloride at levels from 0.12% to 0.48% were fed.
- Evaluated hen-day egg production, feed intake, feed conversion, egg weight, specific gravity, fertility, and hatchability.
Main Results:
- Egg production, feed intake, feed conversion, and egg specific gravity were not significantly affected by supplemental NaCl levels.
- Egg weights were significantly heavier at 0.36% NaCl compared to 0.12% and 0.24%.
- Fertility was significantly depressed at 0.48% NaCl, and overall hatchability was significantly lower at 0.36% and 0.48% NaCl compared to 0.12%.
Conclusions:
- Current National Research Council (1977) sodium recommendations for broiler breeders (200 mg/day) may be higher than necessary.
- Daily sodium intakes between 320-420 mg may reduce fertility in broiler breeders.
- Optimal supplemental sodium chloride levels appear to be lower than those currently recommended, suggesting a need for revised nutritional guidelines.