Suitability of dual-purpose cockerels of 3 different genetic origins for fattening under free-range conditions

Poultry Science
Alexandr TorresAnne Valle Zárate

Abstract

The utilization of male chickens for fattening constitutes a potential advantage of the dual-purpose concept. In addition to the use of commercial hybrids, producers could introduce alternative chicken genotypes or further develop local breeds. To gain more information about the genetic effect on growth performance, carcass characteristics, physicochemical meat traits, and sensory attributes, 60 cockerels belonging to Les Bleues (developed from the French breed Bresse Gauloise), Canarian (Spanish local breed), and Dominant Red Barred D459 (DRB D459; commercial dual-purpose hybrid) genotypes were reared under free-range conditions in a warm tropical climate and slaughtered at 15 wk of age. The major findings were as follows: (i) Les Bleues chickens exhibited the best growth rate and the body weight of 2.44 kg reached by this strain at 15 wk would be gained only after 18 to 19 wk with DRB D459 and it would take even 2 wk longer for Canarian breed, according to the growth modeling using the Morgan equation, although the body weights between the latter were statistical similar at 15 wk; (ii) Les Bleues strain had a good capability in terms of meat production performance, presenting carcasses with significantly heavier commercial cu...Continue Reading

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Citations

Nov 1, 2020·Animals : an Open Access Journal From MDPI·Inga TiemannMargit Wittmann
Mar 7, 2021·Animals : an Open Access Journal From MDPI·Alessandro FranzoniAchille Schiavone
Aug 28, 2021·Animals : an Open Access Journal From MDPI·Antonio González ArizaMaría Esperanza Camacho Vallejo

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