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The effect of the quality of dietary lignocellulose on digestion, zootechnical performance and health of the growing rabbit

Published online by Cambridge University Press:  18 August 2016

T. Gidenne ,
P. Arveux  and
O. Madec
T. Gidenne*
Affiliation:
Station de Recherches Cunicoles, INRA, Centre de Recherche de Toulouse, BP 27, 31326 Castanet-Tolosan, France
P. Arveux
Affiliation:
UNCA-DNS (UCAAB), BP 19, Chierry 024020 Château Thierry, France
O. Madec
Affiliation:
Station de Recherches Cunicoles, INRA, Centre de Recherche de Toulouse, BP 27, 31326 Castanet-Tolosan, France
*
† E-mail [email protected]
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Abstract

The aim of this study was to evaluate the performance and digestive response of the growing rabbit according to a change in the nature of the lignocellulose (ADF), without a change in the ADF level. Three diets with a linearly decreasing lignin/cellulose ratio (ADL/cellulose = 0·8; 0·4; 0·2; respectively LC8, LC4, LC2) were given to a total of 162 rabbits per diet, from weaning till slaughter weight. A reduction of the ADL/cellulose ratio led to a lower food intake (LC8 v LC2: -11%), associated with a lower daily weight gain (-6% for LC2). Mortality and morbidity rate was significantly greater (+50%) for LC2 and LC4 diets compared with the LC8. Thus, the health risk index (morbidity + mortality) increased by 20 units for LC4 and LC2 compared with LC8 diet. In parallel, rate of passage was slower (mean retention time 4·5 h greater, P = 0045) with LC4 and LC2 diets. Dry-matter digestibility was slightly affected, whereas protein digestion was favoured with low ADL/cellulose ratio. It is recommended that a minimum lignin supply (about 6 g/day) is adopted as well as a minimum dietary lignocellulose to ensure growth performance and health of the growing rabbit.

Keywords

diarrhoeadigestionfibrerabbits.
Type
Non-ruminant, nutrition, behaviour and production
Information
Animal Science , Volume 73 , Issue 1 , August 2001 , pp. 97 - 104
Copyright
Copyright © British Society of Animal Science 2001

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