THE ANALYSIS OF THE FACTORS THAT INFLUENCE THE FERTILITY IN THREE COLOUR TYPES OF CHINCHILLA

Abstract

The aim of the work was to analyse the fertility of females in chinchilla. The number of born and raised animals was analysed in standard, beige and black velvet chinchilla. The analysis of variance considered the influence of the colour type, the year and animal age. The analysis proved statistically significant influence of all the factors on the number of born and raised puppies. The highest fertility characterised standard females, then, beige, and the lowest, black velvet. The mean number of born in one litter was 2.10 in standard and less than 1.50 in black velvet. The mean number of raised was the highest in standard, 1.70. Variability coefficient ranged from 34% to 46% in the number of born and from 46% to 61% in the number of raised, depending on colour type and the year. Phenotypic correlations: high and positive correlations were estimated between the number of born and raised (0.641), which proves that the same females were characterised of both higher number of born and raised puppies. These estimators prove that genetic base had low but significant influence on fertility in chinchilla females.

Keywords

• chinchilla
• colour type
• fertility
• variability