Ciência rural, 2012-12, Vol.42 (12), p.2259
2012
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Details
- Autor(en) / Beteiligte
- Titel
- Quantitative traits in meat-type quail through two-trait analysis/ Caracteristicas quantitativas em matrizes de codorna de corte atraves de analises multicaracteristica
- Ist Teil von
- Ciência rural, 2012-12, Vol.42 (12), p.2259
- Ort / Verlag
- Universidade Federal de Santa Maria
- Erscheinungsjahr
- 2012
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- The aim of this paper to evaluate the productive and reproductive performance of different strains of meat-type quail hens, estimating the genetic parameters measured. Two groups were evaluated genetic and UFV2 UFV1 matrix quail cutting, with 1110 being the first animal and second with 1026. Multivariate analysis were conducted using the methodology of principal components to define the most important variables. Then, two-trait analysis to estimate covariances and genetic correlations of traits. The characteristics of the analysis were: weight of the bird (P0, P7, P14, P21, P28, P35, P42, P77, P112 and P147), average egg weight (POM1, POM2, and POM3 POM4), average weight of the shell (PCM1, pcm2, and PCM3 PCM4), average weight of yolk (PGM1, PGM2, and PGM3 PGM4), weight of albumen (PAM1, PAM2, and PAM3 PAM4), average egg specific gravity (DM1, DM2, DM3 and DM4), average width of the egg (LOM1, LOM2, and LOM3 LOM4), average length of egg (COM1, COM2, COM3 and COM4), eggs (N1, N2, N3 and N4), total egg production (TXT) and age at first egg (IDPO). For the group of genetic UFV1, an increase in weight of birds may result in an early and that IDPO to select for increased body weight of birds does not result in significant losses in egg quality. As for UFV2, a selection made at 35 days can identify the most weight matrices throughout the production cycle, and do not generate large losses in total egg production.