ArticleTropical animal health and production2020
Quantifying the effect of inbreeding on average daily gain and Kleiber ratio in Mazandaran native chickens.
Article in Tropical animal health and production, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 5 citations in OpenAlex.
- Gut Microbiota-Driven Modulation of Intestinal Barrier Function, Antioxidant Capacity, and Immune Response in Green-Footed Chicken by Dietary Fermented Chinese Herbal Compounds.Probiotics and antimicrobial proteins · 2026Article
- Assessing Genetic Diversity and Estimating the Inbreeding Effect on Economic Traits of Inner Mongolia White Cashmere Goats Through Pedigree Analysis.Frontiers in veterinary science · 2021Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aims of this study was to evaluate inbreeding effects for growth rate (average daily gain from hatch to 8 weeks of age (ADG1-8), average daily gain from hatch to 12 weeks of age (ADG1-12), average daily gain from 8 weeks of age to 12 weeks (ADG8-12), average daily gain from hatch to sex maturity (ADG1-SM), average daily gain from 8 weeks of age to sex maturity (ADG8-SM), average daily gain from 12 weeks to sex maturity (ADG12-SM), and Kleiber ratios (KR1-8, KR1-12, KR8-12) in Mazandaran native chickens. The data set of 82,446 pedigreed individuals over 21 generations was analyzed. All individuals were grouped into three classes based on the inbreeding coefficient: First class contained non-inbred birds (F = 0) and second and third classes contained inbred individuals (0 < F ≤ 5% and F > 5%, respectively). The effects of inbreeding coefficient on the studied traits were estimated by the restricted maximum likelihood method (REML) applying the WOMBAT software and fitting individual increase in inbreeding coefficient (ΔFi) of birds as linear covariates under 6 different animal models. ADG8-SM and ADG12-SM increased non-significantly by 0.003 and 0.005 g, respectively, due to 1% increase in ΔFi, while ADG1-8, ADG1-12, ADG8-12, ADG1-SM, KR1-8, and KR1-12 decreased (P < 0.001), respectively, by 0.012 g, 0.011 g, 0.010 g, 0.014 g, 0.003 g, and 0.002 g. Also, KR8-12 non-significantly decreased by 0.001 g. Estimates of direct heritability of traits based on the most appropriate models ranged from 0.05 (KR8-12) to 0.26 (ADG12-SM). Results showed that it is important to regularly analyze inbreeding level in the herd in an attempt to prevent the reduction of performance.
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