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Effect of high fat diets on the performance and food intake of primiparous and multiparous rabbit does

Published online by Cambridge University Press:  02 September 2010

J. J. Pascual ,
C. Cervera ,
E. Blas  and
J. Fernandez-Carmona
J. J. Pascual
Affiliation:
Departamento de Ciencia Animal, Universidad Politécnica de Valencia, PO Box 22012, Valencia 46071, Spain
C. Cervera
Affiliation:
Departamento de Ciencia Animal, Universidad Politécnica de Valencia, PO Box 22012, Valencia 46071, Spain
E. Blas
Affiliation:
Departamento de Ciencia Animal, Universidad Politécnica de Valencia, PO Box 22012, Valencia 46071, Spain
J. Fernandez-Carmona
Affiliation:
Departamento de Ciencia Animal, Universidad Politécnica de Valencia, PO Box 22012, Valencia 46071, Spain
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Abstract

The influence of high fat diets on several production traits of primiparous and multiparous rabbit does was studied in 246 lactations from a total of 61 crossbreed rabbit does (Californian × New Zealand). Starting with a control diet (diet C) with 26 g ether extract (EE) per kg dry matter (DM), two isoenergetic diets were formulated adding fat from vegetable sources up to 99 g EE per kg DM (diet V) or animal sources up to 117 g EE per kg DM (diet A). Digestible energy/digestible protein ratio (DE/DP) was maintained between 82 and 87 kj/g. Food intake decreased with high fat diets compared with the control diet during gestation (P ‘lt; 0·001), which implied a decrease in the DE intake (P < 0·01 and P < 0·05 for primiparous and multiparous does, respectively). Fat addition did not affect food intake of primiparous does during lactation (101·8,106·9 and 103·7 g DM per day per kg live weight (M)0·75 for C, V and A diets, respectively) but increased the DE intake (1121 kj/day per kg M°0·75 for C diet cf. 1325 for V and 1264 for A diets; P < 0·01) and reduced does' weight losses at the end of lactation (F > 0·05). However, multiparous does on C diet showed a greater food intake during the last 2 weeks of lactation (110·6 for C diet v. 101·5 and 98·9 g DM per day per kg M0·75 for V and A diets, respectively; P < 0·001). High fat diets improved significantly the productive parameters at the 21st day of lactation: increasing litter size (P < 0·01 for multiparous does) and weight (P < 0·01 and P < 0·001 for primiparous and multiparous does, respectively) and decreasing the food conversion ratio (P < 0·001). An increase of dietary fat content decreased solid food intake of litters during the last 2 weeks of lactation (P < 0·01 and P < 0·001 for primiparous and multiparous does, respectively) but only affected their solid DE intake slightly. In conclusion, high fat diets seem to improve the productivity of lactating does and their corporal condition during the first lactation.

Keywords

dietary fatenergy intakerabbitsreproduction
Type
Research Article
Information
Animal Science , Volume 66 , Issue 2 , April 1998 , pp. 491 - 499
Copyright
Copyright © British Society of Animal Science 1998

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