Now showing items 1-10 of 1763
Genetic parameters and trends of morphometric traits of GIFT tilapia under selection for weight gain
(Univ Sao Paolo, 2014-07-01)
The main factor considered in breeding programs for fish is growth, which can be assessed in terms of a gain in either weight or body measurements. This study was undertaken to evaluate the morphometric traits of GIFT ...
Genetic variation and gain in progenies of crambe
The objective of this study was to estimate the genetic variability of a Brazilian cultivar of crambe, as well as to estimate the genetic gain, with selection focusing on grain yield in crambe. Eighty two progenies were ...
Use of progeny testing in beef cattle: Prediction of genetic gain in a Nelore Cattle Breeding Program
Genetic gains predicted for selection, based on both individual performance and progeny testing, were compared to provide information to be used in implementation of progeny testing for a Nelore cattle breeding program. ...
Grain yield gains in three recurrent selection cycles in the CNA-IRAT 4 irrigated rice population.
(Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 3, p. 369-373, Sept. 2002., 2002)
Soybean genetic gain in maturity groups III to V in Argentina from 1980 to 2015
(Crop Science Society of America, 2016-11)
Genetic progress is assessed to estimate its contribution to on-farm yield increases and to identify traits that have been improved over some period of time. Although Argentina is a major soybean [Glycine max (L.) Merr.] ...
Optimum genetic contribution applied to the selection of Santa Ines sheep
(Empresa Brasil Pesq Agropec, 2016-06-01)
The objective of this work was to evaluate strategies of simulated selection by optimum contribution for the genetic gain, with restriction on coancestry, for the weight trait of 84-day old Santa Ines sheep. The analyses ...
Genetic parameters for pre-weaning traits in Braunvieh cattle
The objective of this study was to estimate genetic parameters for pre-weaning traits of Braunvieh cattle raised under tropical conditions in Brazil. The weight and weight gain parameters were birth weight (BW, N = 9955), ...
Mate selection allows changing the genetic variability of the progeny while optimizing genetic response and controlling inbreeding
This study aims to compare results obtained by mate selection accounting for different components in the objective function (OF), including functions related to genetic variability of the future progeny, using Nile tilapia ...
Estratégias de seleção dentro de progênies em duas populações de myracrodruon urundeuva Fr. All.
Myracrodruon urundeuva Fr. All. is a tree species threatened by human pressure. For this reason, this research aimed at evaluating the behavior of two populations of M. urundeuva in a heterogeneous plantation as a support ...
Two-Way Selection for Daily Gain and Feed Conversion in a Composite Rabbit Population
We conducted a two-way selection experiment in a composite rabbit population to investigate the responses to selection for postweaning ADG and feed conversion (FC). Two generations of crossing, followed by four generations ...