Báo cáo sinh học: "Estimation of genetic parameters of egg production traits of laying hens by restricted maximum likelihood applied to a multiple-trait reduced animal model" pps

... birds.

Ngày tải lên: 14/08/2014, 20:20

... 5. Dept Anim Sci, Texas A & M Univ, TX Quaas RL, Elzo MA, Pollak EJ (1985) Analysis of Simmental data: Estimation of direct and maternal (co)variances. J Anim Sci ... realistic model, the maternal animal model, some effects were always assumed to be absent due to computational limitation. For instance, a covariance between maternal...

Ngày tải lên: 14/08/2014, 19:22

... article Estimation of genetic parameters for body weight traits in squab pigeons SE Aggrey, KM Cheng University of British Columbia, Department of Animal Science, Avian Genetics Laboratory, ... the genetic or phenotypic covariance between traits x and y, and var(x) and var(y) are the estimated genetic or phenotypic variances of traits x a...

Ngày tải lên: 14/08/2014, 20:20

... Génétique Animale, Inra, Castanet- Tolosan, CD-ROM communication No. 28–13. [10] Bordas A. , Mérat P., Effect of the naked neck gene on traits associated with egg laying in a dwarf stock at two temperatures, ... (A) an animal model, (B) an animal model with a fixed effect for the genotype at the NA locus, (C) an animal model with a random permanent maternal environmental e...

Ngày tải lên: 14/08/2014, 13:22

... would lead to some changes in estimates of crossbreeding parameters, as shown in table VIII. The main changes concern grand-maternal and, to a lesser extent, maternal breed ... birth (for ANW and AWB) or at weaning (for AW21) and exact age at measurement, were added to the model when appropriate. Preliminary analyses indicated that regres...

Ngày tải lên: 14/08/2014, 19:22

... of age according to its genetic variation at that age. There were considerable non-additive genetic variations and maternal genetic variation for egg production traits. Additivity ... and to discuss the genetic parameters of some growth and laying traits of Brown Tsaiya in Taiwan. MATERIALS AND METHODS Ducks Two hundred Tsaiya ducks a...

Ngày tải lên: 14/08/2014, 20:20

... reproductive traits. MATERIALS AND METHODS A. Animals and experimental design The experiment was carried out at the INRA Experimental Station &dquo;Le Magneraud&dquo; (Surg6res, ... relationships between animals are not taken into account. Estimates of fixed effects remain unbiased, but are not actually best linear unbiased estimates. Surviva...

Ngày tải lên: 14/08/2014, 20:20

... parity. Average daily gains were computed from birth to 21 days of age (ADG 0-21), 21 to 73 days of age (ADG 21-73) and 73 to 154 days of age (ADG 73-154). The genetic ... hierarchy of genetic types with respect to adult weight (estimated as the average value of 4th and 5th parities) remained almost the same as during Sow wei...

Ngày tải lên: 14/08/2014, 20:20

... J, Capy P, Defaye D, Pla E, Sandrin J, Csink A, David JR (1989) Short range genetic structure of Drosophila melanogaster populations in an Afrotropical urban area, and ... each family) is equal to or below the parameters defined prior to starting to sample (see Capy and Rouault, 1987, for more details). Résumé — Estimation de...

Ngày tải lên: 14/08/2014, 20:20

... Drosophila. Genetic investigation of quantitative behavioral traits Neuropsychiatric geneticists are now focusing considerable attention on the investigation of quantitative human behavioral traits, ... for a target trait (such as aggressive behavior) and for genetic modification of candidate genes. In addition, it offers diverse complex behavioral and neuroanatomical ph...

Ngày tải lên: 06/08/2014, 19:21