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In ovo feeding of carbohydrates for broilers-a systematic review
P L Retes1, A H S Clemente2, D G Neves2
1Veterinary Medicine Department, Federal University of Lavras, Lavras, Minas Gerais, Brazil.
Journal of Animal Physiology and Animal Nutrition
|October 26, 2017
Summary
In ovo carbohydrate injections in broiler chickens show mixed results. While hatch weight may improve, hatch rates can decrease, with no clear benefit to post-hatch performance.
Area of Science:
- Animal Science
- Poultry Nutrition
- Embryology
Background:
- In ovo feeding is a novel approach to enhance broiler chicken development.
- Carbohydrates are a primary energy source for rapid growth.
Purpose of the Study:
- To systematically review evidence on the impact of in ovo carbohydrate injections on broiler performance.
- To identify optimal methods for in ovo carbohydrate delivery.
Main Methods:
- Systematic literature search (April 2017) using keywords: broiler, carbohydrate, in ovo, nutrition, poultry.
- Selection of 17 relevant studies based on predefined criteria.
- Quality assessment based on injection methodology, controls, solution type, timing, and statistical design.
Main Results:
- Inconsistent injection methodologies were observed across studies.
- In ovo carbohydrate administration generally decreased hatch rates but improved hatch weight.
- Post-hatch broiler performance was not significantly influenced.
Conclusions:
- In ovo carbohydrate feeding has a complex effect on broiler development, impacting early stages but not long-term performance.
- 75 mg of glucose injected into the albumen showed promising results.
- Further research is required to standardize in ovo injection techniques for commercial application.
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