ArticleTropical animal health and production2025
Energy use and egg production in Rhode Island Red × Naked Neck hens under dry tropical family poultry systems.
Article in Tropical animal health and production, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Genotype-Dependent Variations in Egg Quality and Nutritional Composition of Thermotolerant Chickens Under Hot-Climate Conditions.Food science & nutrition · 2026Article
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Authors and funding
6 authors.
Funding
Abstract
The objective was to evaluate the performance of Rhode Island Red × Naked Neck hybrid hens—partial Naked Neck (PNNH; Na·na) vs. fully feathered (FFH; na·na)—under family poultry conditions in the dry tropics. Sixty hens (30 PNNH and 30 FFH) were included in the analysis. Growth was described with the Gompertz–Laird function, and metabolizable energy (ME) was partitioned into ME for maintenance (MEm), ME for egg production (MEp), and ME requirement (MEreq). Differences in productivity between phenotypes were assessed using mixed models, and linear regression related the temperature–humidity index (THI) to ME components. PNNH reached a higher asymptotic body weight (1,439.8 vs. 1,193.7 g; p < 0.05) and began laying earlier (3 weeks earlier; p < 0.05). PNNH also showed greater egg weight (56.9 vs. 51.7 g; p < 0.05), laying rate (59.9% vs. 39.8%; p < 0.05), and egg mass (34.2 vs. 20.9 g/hen/day; p < 0.05). Likewise, PNNH had higher MEm (176.6 vs. 156.2 kcal/hen/day; p < 0.05), MEp (64.0 vs. 31.3 kcal/hen/day; p < 0.05), and ME intake (552.6 vs. 447.5 kcal/hen/day; p < 0.05). THI reduced ME intake by − 16.1 and − 23.7 kcal/hen/day per THI unit in PNNH and FFHC, respectively. In summary, crossbreeding with Naked Neck hens improves energy efficiency and egg production, offering a sustainable strategy for enhancing family poultry systems in the dry tropics.
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Registered trials
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