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Titolo:
ENVIRONMENTAL AND GENETIC-EFFECTS ON BIRTH-WEIGHT IN GRADED-UP GOAT KIDS
Autore:
SANCHEZ F; MONTALDO H; JUAREZ A;
Indirizzi:
UNIV AUTONOMA METROPOLITANA XOCHIMILCO,DEPT PROD AGR & ANIM,CALZADA HUESO 1100,VILLA QUIETUD 04960 MEXICO CITY DF MEXICO UNIV GUANAJUATO,ESCUELA AGRON & ZOOTECN 36500 IRAPUATO GUANAJUATO MEXICO
Titolo Testata:
Canadian journal of animal science
fascicolo: 3, volume: 74, anno: 1994,
pagine: 397 - 400
SICI:
0008-3984(1994)74:3<397:EAGOBI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWTH; JAMUNAPARI;
Keywords:
GOAT KIDS; BIRTH WEIGHT; ALPINE; GRANADINA; NUBIAN; SAANEN; TOGGENBURG; CROSSBREDS; HERITABILITY; NONGENETIC FACTORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
F. Sanchez et al., "ENVIRONMENTAL AND GENETIC-EFFECTS ON BIRTH-WEIGHT IN GRADED-UP GOAT KIDS", Canadian journal of animal science, 74(3), 1994, pp. 397-400

Abstract

A linear model analysis was carried out to study the effect of sex, litter size, age of dam, year, birth period and genetic group on birth weight in goats. Genetic groups consisted of graded-up goats from backcrosses of local goats with Alpine, Granadina, Nubian, Saanen and Toggenburg sires, classified as low grade (from 1/2 to 3/4 of exotic genes) and high grade (over 3/4 of exotic genes). Heritabilities were also obtained for low- and high-grade kids. The data concern 4623 records from a farm under a stall feeding system in the north of Mexico. All ofthe main fixed effects but only the genetic group x birth period interaction were significant (P < 0.05). Males were heavier than females and singles were heavier than double and multiple-born kids. Birth weight means increased as dam age increased. Birth weight means for high and low grade kids were, respectively, 3.3 and 3.2 kg in Alpine kids, 3.1 and 3.2 in Nubian, 2.7 and 2.9 in Granadina, 3.3 and 3.3 in Saanen and 3.3 and 3.1 in Toggenburg. Heritability estimates were 0.40 +/- 0.14 and 0.44 +/- 0.18 in high and low grade kids, respectively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 15:01:17