Four composite and 22 individual linear type traits, measured between 1997 and 2012 on 33,206 Aosta Red Pied (ARP) and 19,551 Aosta Black Pied and Aosta Chestnut (ABP-CN) strains of Valdostana cattle, were used to investigate the non-genetic factors affecting morphological evaluation. Average values for type traits ranged from 2.81 (teat placement rear view and foot angle) to 3.34 (thinness) for ARP, and from 2.48 (teat placement side view) to 3.67 (udder depth) for ABP-CN. Results from the ANOVA showed significant effect of herd-year-classifier on type traits of both ARP and ABP-CN, and of days in milk and age at calving for almost all traits, with few exceptions. The model used in this study is a useful starting point to calculate genetic parameters for Valdostana cattle

Factors affecting linear type traits of Valdostana cattle

MAZZA, SERENA;SARTORI, CRISTINA;MANTOVANI, ROBERTO
2013

Abstract

Four composite and 22 individual linear type traits, measured between 1997 and 2012 on 33,206 Aosta Red Pied (ARP) and 19,551 Aosta Black Pied and Aosta Chestnut (ABP-CN) strains of Valdostana cattle, were used to investigate the non-genetic factors affecting morphological evaluation. Average values for type traits ranged from 2.81 (teat placement rear view and foot angle) to 3.34 (thinness) for ARP, and from 2.48 (teat placement side view) to 3.67 (udder depth) for ABP-CN. Results from the ANOVA showed significant effect of herd-year-classifier on type traits of both ARP and ABP-CN, and of days in milk and age at calving for almost all traits, with few exceptions. The model used in this study is a useful starting point to calculate genetic parameters for Valdostana cattle
2013
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2711879
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? ND
  • OpenAlex ND
social impact