Fecha/hora: 16/06/2024 03:32:30

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 10/05/2018
Fecha de la última actualización: | 29/03/2021
Autoria: | LEMA, O.M.; AGUILAR, I.; DIONELLO, N.J.L.; CARDOSO, F.F.; RAVAGNOLO, O.; GIMENO, D.
Afiliación: | OSCAR MARIO LEMA QUEIJO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Universidade Federal de Pelotas, Brazil.; Universidade Federal de Pelotas, Brazil./Embrapa Pecuaria Sul, Brazil.; OLGA RAVAGNOLO GUMILA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Facultad de Agronomía, Universidad de la República, Uruguay ./ Secretariado Uruguayo de la Lana, Uruguay.
Título: | Additive, heterotic and recombination losses for direct and maternal effects in growth for British, Continental and Zebu crosses.
Año de publicación: | 2018
Fuente/Imprenta: | In: Proceedings of the World Congress on Genetics Applied to Livestock Production, 11., Aotea Centre Auckland, New Zealand: WCGALP, ICAR, 11-16 feb 2018.
Idioma: | Inglés
Contenido: | Summary:   Individual and maternal additive and non-additive effects for weights taken every 3 months from birth to 36 months were estimated for Hereford (H/H), Angus (A/A), Salers (S/S) and Nellore (N/N). For the analysis 45.794 weight records from 4.050 animals (2.036 male and 2.014 females), were used. Data corresponds to 39 different breed combinations, H/H and A/A pure breed and 37 groups whit A/A, S/S and N/N crosses with H/H. Data was grouped into 754 contemporary groups defined by sex, year at birth, calving period, experiment, cow parity and the date of weight. Parameters were estimated through model were genetic crossbreeding effects based on Dickerson full model. British breeds provided improved combinations of additive effects, while Zebu breed provided larger values for heterosis and recombination loss. The benefit of using crossbred females is maintained until 3 years of age for British x British and British x Continental. The benefit is also maintained until 3 years of age for Zebu x British while proportion of British is larger than proportion of Zebu. Additive and non-additive effects relevance are maintained at least until 36 months of age. The best combination for growth until 36 months of age is obtained by F1 N/H females, given the maximum use of maternal heterosis and the use of half of the individual heterosis between these breeds, which compensates the negative additive effects of the Zebu breed.
Palabras-Clave: | BEEF CATTLE; CROSSBREEDING; NON-ADDITIVE EFFECTS.
Thesagro: | GANADO DE CARNE; MEJORAMIENTO ANIMAL.
Categoría del tema: | L10 Genética y mejoramiento animal
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/9539/1/Lema-Additive-heterotic-and-recombination-losses-dir-and-mat-eff-in-growth-for-Bt-Cont-and-Zb-crosses.pdf
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (102440-1) - PXI - PC - DD -  -  -  - DIS