Feedlot performance of dorper wether lambs fed Opuntia-based diets with different nitrogen sources

Abstract: 
The performance and carcass characteristics of 45 Dorper wether lambs fed Opuntia-based diets with different nitrogen (N) sources were evaluated in the feedlot. Lambs were weighed weekly to determine the ADG and slaughtered when they reached an average target weight of 35 kg live body weight to determine carcass characteristics. There were marked differences in ADG and FCR (P<0.05) between Opuntia-based diets. However, lack of significant differences in most of the carcass characteristics considered in this study suggest that carcass quality is not affected by inclusion of Opuntia cladodes in diets or by the type of N source used.
La performance et les caractéristiques de la carcasse de 45 agneaux castrés de Dorper de régime alimentaire à base d’ Opuntia avec différentes sources d’azote (N) ont été évaluées dans le parc d’engraissement. Les agneaux ont été pesés chaque semaine afin de déterminer l’ADG et abattus quand ils ont atteint un poids cible moyen de 35 kg, poids réel pour déterminer les caractéristiques de la carcasse. Il y avait des différences marquées dans les ADG et FCR (P <0,05) entre les régimes à base d’ Opuntia. Cependant, l’absence de différences significatives dans la plupart des caractéristiques de la carcasse considérés dans cette étude suggère que la qualité de la carcasse n’est pas affectée par l’inclusion de raquettes d’ Opuntia dans l’alimentation ou par le type de source d’azote N utilisé.
Language: 
Date of publication: 
2010
Country: 
Region Focus: 
Southern Africa
University/affiliation: 
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
Publisher: 
ISSN: 
E_ISSN: 
Edition: 
Extent: 
1157-1160
Notes: 

About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Animal Science"