Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Effect of herd, season and sex on the age of reaching fur maturity in chinchilla

100%

Bieniek J., Brach R., Maj D., Bonczar Z., Peczkis K.

Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego

2011

tom 07

nr 1

The aim of this study was to determine the effect of herd, birth season, slaughter season, and sex on the age of reaching a full maturity of fur in chinchilla. The data on 566 chinchillas (104 females and 462 males) slaughtered for pelt in the years 1997 to 2002 were collected from 4 farms. The linear model of fur maturity age in the analysis of variance included birth month, herd (farm), and sex as factors. The results showed that the age of animals at fur maturity (assumed to be the age at slaughter) averaged 284 days. Significant differences between the herds indicate that the conditions of housing and the system of breeding influenced this trait. The differences between males and females were not significant. The month of birth had a significant effect on the age of fur maturity: chinchillas born in October were the first to reach fur maturity (253 days), followed by chinchillas born from May to August and in November (275-279 days), while those born from January to April as well as in September and December were the latest (295-302 days). Chinchillas born in March were an exception to the general pattern: 51% of the animals reached fur maturity in the period from December to March (64.4% from December to April).

Ograniczanie wyników

1 Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego

1 Bieniek J.

1 Bonczar Z.

1 Brach R.

1 Maj D.

1 Peczkis K.

1 2011

Wyniki wyszukiwania

Effect of herd, season and sex on the age of reaching fur maturity in chinchilla