Padua Research Archive, l’archivio istituzionale della produzione scientifica dell’Università degli Studi di Padova, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ateneo. Padua Research Archive utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishPadovana female chickens of two plumage varieties, chamois (PC) and silver (PS) and their cross (PC male x PS female) were reared from 1 d until 200 d of age, when they were slaughtered. PC has light brown feathers with white edge (chamois), PS has white feathers with black edge (silver); PCxPS has silver plumage (cross-S) or completely white plumage (cross-W) at a ratio, at hatching, of 1:2 as cross-S:cross-W. The chickens were kept in a breeder house from May until December. In a population of Padovana chickens it seems to be a relationship between the colour plumage and body weight until the sexual maturity: from 2 weeks until 6 weeks of age the PC females exhibited a higher daily growth (p < .001) than PS, as well as body weight (p < .01) at 28 weeks. At 200 d, PC showed higher carcass (p < .05) and thigh (p < .05) weight than PS, but similar ready-to-cook carcass conformation, and pH, colour, water losses and shear force of breast muscle; no difference was checked between the other groups. Under the environmental conditions of the trial, heterosis had a positive effect (p < .05) on the daily growth until 70 d of age for cross-S. The results shows a sexual dimorphism for body dimensions increasing until the pubertal age for all the groups; therefore the females should be slaughtered about 8 weeks later than the males for achieving similar body weight and slaughtering performance and carcass quality.
| Titolo: | Plumage colour in Padovana chicken breed: growth performance and carcass quality |
| Autori: | DE FASSI NEGRELLI RIZZI, CHIARA (Corresponding) |
| Data di pubblicazione: | 2018 |
| Rivista: | |
| Abstract: | Padovana female chickens of two plumage varieties, chamois (PC) and silver (PS) and their cross (PC male x PS female) were reared from 1 d until 200 d of age, when they were slaughtered. PC has light brown feathers with white edge (chamois), PS has white feathers with black edge (silver); PCxPS has silver plumage (cross-S) or completely white plumage (cross-W) at a ratio, at hatching, of 1:2 as cross-S:cross-W. The chickens were kept in a breeder house from May until December. In a population of Padovana chickens it seems to be a relationship between the colour plumage and body weight until the sexual maturity: from 2 weeks until 6 weeks of age the PC females exhibited a higher daily growth (p < .001) than PS, as well as body weight (p < .01) at 28 weeks. At 200 d, PC showed higher carcass (p < .05) and thigh (p < .05) weight than PS, but similar ready-to-cook carcass conformation, and pH, colour, water losses and shear force of breast muscle; no difference was checked between the other groups. Under the environmental conditions of the trial, heterosis had a positive effect (p < .05) on the daily growth until 70 d of age for cross-S. The results shows a sexual dimorphism for body dimensions increasing until the pubertal age for all the groups; therefore the females should be slaughtered about 8 weeks later than the males for achieving similar body weight and slaughtering performance and carcass quality. |
| Handle: | http://hdl.handle.net/11577/3253511 |
| Appare nelle tipologie: | 01.01 - Articolo in rivista |
File in questo prodotto:
Copyright © 2021