Effect of energy restriction in interaction with genotype on the performance of growing rabbits I

Productive traits

Z. Szendrő, Sz Metzger, H. Fébel, I. Hullár, L. Maertens, M. Bianchi, C. Cavani, M. Petracci, E. Biró-Németh, I. Radnai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The aim of this experiment was to study the effect of genotypes (rabbits selected for high or low body fat content) and level of DE intake (high, medium or low) at constant CP, CF, and EE intake on the performance of growing rabbits, separately and their interactions. Pannon White rabbits selected for high (HFAT) or low (LFAT) total body fat content were weaned at 4 weeks of age and fed one of three isocaloric diets (11.72, 11.60 and 11.66 MJ DE/kg diet, respectively). Diet one was fed ad libitum (treatment H), while diets 2 (treatment M) and 3 (treatment L) were fed at 90% and 80%, respectively of the ad libitum intake. Proportional to the reduction of feed intake the nutrient density of diets was increased (e.g. crude protein: 17.5, 19.8 and 21.9%; crude fibre: 12.9, 13.4 and 14.7%, respectively for the 3 diets). Genotype had a significant effect on feed conversion (3.26 and 3.02 g/g; P <0.001; in groups HFAT and LFAT, respectively). With the reduction of the DE intake the daily weight gain and the body weight at 12 weeks of age decreased significantly (40.7, 38.5 and 33.7g/day, P <0.001 and 2917, 2799 and 2527 g, P <0.001; in groups H, M and L, respectively). On the contrary, the energy reduction had a positive effect on the feed conversion and on the mortality rate (3.29, 3.17 and 3.11 g/g, P <0.05, and 29.5, 28.1 and 4.8%, P <0.05; respectively). It is concluded that the genotype influenced mainly the feed conversion with higher nutrient demand for building fat than for muscle. The performance (weight gain, body weight and feed conversion) was determined by the digestible energy intake, independently of nutrient intake. The effect of reductions of DE intake was independent of the genotype (rabbits with higher or lower body fat content).

Original languageEnglish
Pages (from-to)123-131
Number of pages9
JournalLivestock Science
Volume118
Issue number1-2
DOIs
Publication statusPublished - Oct 2008

Fingerprint

rabbits
Genotype
Diet
Rabbits
genotype
energy
feed conversion
diet
body fat
Adipose Tissue
lipid content
Food
Weight Gain
weight gain
Body Weight
nutrient density
body weight
digestible energy
crude fiber
Energy Intake

Keywords

  • Body fat content
  • DE intake
  • Growing rabbits
  • Production

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Effect of energy restriction in interaction with genotype on the performance of growing rabbits I : Productive traits. / Szendrő, Z.; Metzger, Sz; Fébel, H.; Hullár, I.; Maertens, L.; Bianchi, M.; Cavani, C.; Petracci, M.; Biró-Németh, E.; Radnai, I.

In: Livestock Science, Vol. 118, No. 1-2, 10.2008, p. 123-131.

Research output: Contribution to journalArticle

Szendrő, Z, Metzger, S, Fébel, H, Hullár, I, Maertens, L, Bianchi, M, Cavani, C, Petracci, M, Biró-Németh, E & Radnai, I 2008, 'Effect of energy restriction in interaction with genotype on the performance of growing rabbits I: Productive traits', Livestock Science, vol. 118, no. 1-2, pp. 123-131. https://doi.org/10.1016/j.livsci.2008.01.003
Szendrő, Z. ; Metzger, Sz ; Fébel, H. ; Hullár, I. ; Maertens, L. ; Bianchi, M. ; Cavani, C. ; Petracci, M. ; Biró-Németh, E. ; Radnai, I. / Effect of energy restriction in interaction with genotype on the performance of growing rabbits I : Productive traits. In: Livestock Science. 2008 ; Vol. 118, No. 1-2. pp. 123-131.
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abstract = "The aim of this experiment was to study the effect of genotypes (rabbits selected for high or low body fat content) and level of DE intake (high, medium or low) at constant CP, CF, and EE intake on the performance of growing rabbits, separately and their interactions. Pannon White rabbits selected for high (HFAT) or low (LFAT) total body fat content were weaned at 4 weeks of age and fed one of three isocaloric diets (11.72, 11.60 and 11.66 MJ DE/kg diet, respectively). Diet one was fed ad libitum (treatment H), while diets 2 (treatment M) and 3 (treatment L) were fed at 90{\%} and 80{\%}, respectively of the ad libitum intake. Proportional to the reduction of feed intake the nutrient density of diets was increased (e.g. crude protein: 17.5, 19.8 and 21.9{\%}; crude fibre: 12.9, 13.4 and 14.7{\%}, respectively for the 3 diets). Genotype had a significant effect on feed conversion (3.26 and 3.02 g/g; P <0.001; in groups HFAT and LFAT, respectively). With the reduction of the DE intake the daily weight gain and the body weight at 12 weeks of age decreased significantly (40.7, 38.5 and 33.7g/day, P <0.001 and 2917, 2799 and 2527 g, P <0.001; in groups H, M and L, respectively). On the contrary, the energy reduction had a positive effect on the feed conversion and on the mortality rate (3.29, 3.17 and 3.11 g/g, P <0.05, and 29.5, 28.1 and 4.8{\%}, P <0.05; respectively). It is concluded that the genotype influenced mainly the feed conversion with higher nutrient demand for building fat than for muscle. The performance (weight gain, body weight and feed conversion) was determined by the digestible energy intake, independently of nutrient intake. The effect of reductions of DE intake was independent of the genotype (rabbits with higher or lower body fat content).",
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