Influence of Live Weight at Born on Growth Traits of Synthetic Broiler Rabbit Line

Abstract

The initial live weight of the body is considered a very important factor influencing the growth traits and the final body weight. The differences are expressive especially in species of large litters and short period of fattening. The large litters are the precondition of different live weights of the youngs. Especially the large litters with more than ten alive youngs produces youngs of different live weight. The aim of this study was to evaluate the influence of live weight at born on growth traits of synthetic broiler rabbit line. The 3rd generation of giant sire line with the basis of Belgian Giant White rabbit and local standard broiler population (M91) was tested in this experiment. Animals born in 18 litters were individually marked and weighted at birth day, 35th day, 84th day and at the age of 105 days. All animals were consequently divided in eight groups according to the live weight at born. The average growth rate of each groups was evaluated. The lowest average live weight at weaning (35th day) was 846.25 g in group 1 and the highest live weight was 1093.18 in group 8 with significant differences between groups (P-value = 0,0000 at the 95,0 % confidence level). Similar results were determined also at the age of 84 days, when the lowest weight was obtained in group 2 and the highest weight in group 8 with average weight 2442,50 g; 3173,64 g resp. Significant differences with P-value = 0,0000 at the 95,0 % confidence level. The 105th day is considered as the age of sexual maturity. The lowest body weight reached group 3 and the highest live body weight was in group 8 with average value 2913.50 g and 3701.82 g resp. The significant differences were determined as well with P-value = 0.0000 at the 95.0 % confidence level.

Keywords

• live weight at born
• growth rate