Related Experiment Videos
Direct and maternal genetic effects for ascites-related traits in broilers
A Pakdel1, J A M Van Arendonk, A L J Vereijken
1Animal Breeding and Genetics Group, Wageningen Institute of Animal Sciences, The Netherlands. abbas.pakdel@alg.vf.wau.nl
Poultry Science
|September 25, 2002
Summary
This study estimated heritabilities for ascites-related traits in broilers, finding both direct and maternal genetic effects are crucial for ascariasis syndrome development. These findings are vital for broiler breeding programs aiming to reduce ascariasis.
Area of Science:
- Animal Genetics
- Avian Pathology
Background:
- Ascariasis syndrome poses a significant challenge in broiler production, impacting bird health and economic viability.
- Understanding the genetic basis of ascariasis is essential for developing effective breeding strategies.
Purpose of the Study:
- To estimate heritabilities for various ascariasis-related traits in broilers.
- To evaluate the influence of maternal genetic effects on these traits.
Main Methods:
- Measurement of ascariasis-related traits in over 4,000 broilers under cold stress conditions.
- Estimation of heritabilities using an animal model incorporating direct and maternal genetic effects.
Main Results:
- Heritability estimates for direct genetic effects ranged from 0.18 (fluid accumulation) to 0.47 (right ventricular weight).
- Maternal effects significantly impacted body weight (BW), total ventricular weight, and total mortality.
- Direct and maternal heritabilities were estimated for BW, total ventricular weight, and total mortality, highlighting the interplay of genetic factors.
Conclusions:
- Both direct and maternal genetic effects play a significant role in the development of ascariasis syndrome in broilers.
- These heritability estimates provide valuable insights for genetic selection programs aimed at improving broiler health and reducing ascariasis incidence.