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Titolo:
Genetic parameters of type appraisal in Saanen and Alpine goats
Autore:
Manfredi, E; Piacere, A; Lahaye, P; Ducrocq, V;
Indirizzi:
INRA, Stn Ameliorat Genet & Anim, F-31326 Castanet Tolosan, France INRA Castanet Tolosan France F-31326 m, F-31326 Castanet Tolosan, France Inst Elevage, F-31326 Castanet Tolosan, France Inst Elevage Castanet Tolosan France F-31326 26 Castanet Tolosan, France Caprigene France, Agropole, F-86550 Mignaloux Beauvoir, France Caprigene France Mignaloux Beauvoir France F-86550 loux Beauvoir, France NRA, Genet Quantitat & Appl Stn, F-78352 Jouy En Josas, France NRA Jouy En Josas France F-78352 Appl Stn, F-78352 Jouy En Josas, France
Titolo Testata:
LIVESTOCK PRODUCTION SCIENCE
fascicolo: 3, volume: 70, anno: 2001,
pagine: 183 - 189
SICI:
0301-6226(200108)70:3<183:GPOTAI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAXIMUM-LIKELIHOOD-ESTIMATION; VARIANCE-COMPONENTS; MILK-PRODUCTION; DAIRY GOATS; TRAITS; MATRICES; BREED; MODEL; UDDER;
Keywords:
dairy goats; genetics; type appraisal; genetic parameters; Alpine; Saanen;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Manfredi, E INRA, Stn Ameliorat Genet & Anim, BP 27, F-31326 Castanet Tolosan, France INRA BP 27 Castanet Tolosan France F-31326 et Tolosan, France
Citazione:
E. Manfredi et al., "Genetic parameters of type appraisal in Saanen and Alpine goats", LIVEST PROD, 70(3), 2001, pp. 183-189

Abstract

Genetic parameters for linear type traits, scored from 1 to 9, were estimated using data corresponding to 7821 Saanen and 11494 Alpine first kidders sired by artificial insemination bucks and classified between 1995 and 1999by the French Breeders' Association "Caprigene". Studied variables included six traits related to body, feet and legs, and 11 traits related to udderand teats. Animal size, measured here as the thorax perimeter, had high heritability (0.41 for Saanen and 0.50 for Alpine). Feet and legs traits had low heritabilities (0.05 to 0.16) but udder traits and teat location traitshad moderate heritabilities of about 0.30 and teat dimension traits had heritabilities over 0.40. Low genetic correlations were found between, on onehand, body, feet and legs traits and, on the other hand, udder and teat traits. These traits can be grouped according to estimated genetic correlations into: suspensory system, teat location and teat dimension. Most correlations between estimated breeding values (EBVs) for type traits and EBVs for milk yield were low, the exception being the antagonistic association foundbetween EBVs for milk yield and suspensory system traits. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/10/20 alle ore 15:37:17