home    about    browse    search    latest    help 
Login | Create Account

Eiweiß-, Fett und Energieansatz von Masthühnern einer langsam wachsenden Herkunft unter ökologischen Fütterungsbedingungen

Carrasco Alarcon, Luz Salomé; Bellof, Gerhard and Schmidt, Eggert (2013) Eiweiß-, Fett und Energieansatz von Masthühnern einer langsam wachsenden Herkunft unter ökologischen Fütterungsbedingungen. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

[thumbnail of 21361_Carrasco.pdf]
Preview
PDF - Accepted Version - German/Deutsch
399kB


Summary

An experiment was carried out to study the protein, fat and energy deposition profiles of male and female slow-growing broilers (ISA J-257) fed with organic diets. Feed mixtures with reduced dietary energy level and essential amino acids (EAAs) were tested. Birds were slaughtered at 0, 14, 28, 42 and 56 d of age. The whole body weight (WBW) was analyzed in each period to calculate the protein, fat and energy deposition. Gompertz growth curves were fitted to the data.
The diets did not affect the studied variables. After 28 d, males had higher WBW growth rates, and at 56 d higher energy and protein deposition rates than females, except for fat. According to the Gompertz curves, males reached higher maximum rates of WBW growth, energy, protein and fat deposition than females. But females reached earlier the maximum rates of WBW growth (11 d), of energy deposition (12 d) and of protein deposition (15 d) than males. Females reached the maximum rate of fat deposition 1 d later. The organic production of slow-growing male and female broilers requires gender different feed programs and different final body weights from 30 d of age to the slaughter age.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Slow-growing broiler; protein, fat and energy deposition; organic production
Subjects: Animal husbandry > Feeding and growth
Animal husbandry > Production systems > Poultry
Research affiliation: Germany > Federal States > Bavaria > State research centre agriculture
International Conferences > 2013: Scientific Conference Organic Agriculture > Animal husbandry
Related Links:http://www.wissenschaftstagung.de/, https://www.verlag-koester.de/index.php?id=114&tx_fbmagento[shop][route]=catalog&tx_fbmagento[shop][controller]=product&tx_fbmagento[shop][action]=view&tx_fbmagento[shop][id]=1137&tx_fbmagento[shop][s]=beitrage-zur-12-wissenschaftstagung-okologischer-land
Deposited By: Carrasco Alarcón, Dr. Salome
ID Code:21361
Deposited On:09 Sep 2013 12:29
Last Modified:22 Nov 2013 13:43
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 12. Wissenschaftstagung erschienen.
Dr. D. Neuhoff, C. Stumm, S. Ziegler u.a. (Hrsg.)
Beiträge zur 12. Wissenschaftstagung Ökologischer Landbau
Ideal und Wirklichkeit: Perspektiven ökologischer Landbewirtschaftung
Erscheinungsjahr: 2013
ISBN-13: 9783895748158
Verlag Dr. Köster, Berlin

Repository Staff Only: item control page