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Variation in Growth Performance and Carcass Yield of Pure and Reciprocal Crossbred Turkeys Cover

Variation in Growth Performance and Carcass Yield of Pure and Reciprocal Crossbred Turkeys

Open Access
|Mar 2015

Abstract

This study compared growth, feed conversion ratio (FCR), mortality rate and results of slaughter analysis of slow-growing Bronze turkeys (SG), fast-growing Big 6 turkeys (FG), and their reciprocal crosses (SF and FS). Until 6 weeks of age the birds were kept indoors and afterwards they were allowed to use free ranges. Toms were reared until 21 and hens until 15 weeks of age. The FS turkeys were characterized by higher (P≤0.05) BW and dressing percentage and by lower FCR compared to the SF crosses of both sexes. The analysis of orthogonal contrasts demonstrated that values of most of the slaughter analysis parameters were due to the additive effect of genes. Only weight of skin with fat and of gizzard could result from heterosis. Study results demonstrate that FS crosses constitute better material for the alternative production of turkeys compared to the other analysed groups (SG, SF, FG).

DOI: https://doi.org/10.2478/aoas-2014-0058 | Journal eISSN: 2300-8733 | Journal ISSN: 1642-3402
Language: English
Page range: 51 - 66
Submitted on: Jan 28, 2014
Accepted on: Jun 18, 2014
Published on: Mar 3, 2015
Published by: National Research Institute of Animal Production
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2015 Krzysztof Damaziak, Monika Michalczuk, Żaneta Zdanowska-Sąsiadek, Jan Niemiec, Dariusz Gozdowski, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.