Results 21 to 30 of about 511,992 (306)
Genetic trend for lactation length (LL) by year of birth of Sahiwal cows. [PDF]
, 2022 Genetic trend for lactation length (LL) by year of birth of Sahiwal cows.
Gopal Gowane (11454466) +4 more
core +1 more source
Animal, 2007 The objective of the study was to estimate genetic trends from 1977 to 1998 in the French Large White (LW) breed for stillbirth and associated traits measured at farrowing using frozen semen. Two groups of pigs (G77 and G98) were obtained by inseminating
L. Canario +4 more
doaj +1 more source
Revista Brasileira de Zootecnia, 2023 The objectives of this work were to estimate the genetic parameters for the traits longevity (LG) and accumulated milk yield at 305 days (MY305) using a bitrait animal model and the single-step GBLUP method and estimate the genetic gain for LG through ...
Isabella Silva de Carvalho +6 more
doaj +1 more source
Global amphibian declines, loss of genetic diversity and fitness: a review [PDF]
, 2010 It is well established that a decrease in genetic variation can lead to reduced fitness and lack of adaptability to a changing environment. Amphibians are declining on a global scale, and we present a four-point argument as to why this taxonomic group ...
Allentoft, M.E. +5 more
core +2 more sources
Memory-based immigrants for genetic algorithms in dynamic environments [PDF]
, 2005 Copyright @ 2005 ACMInvestigating and enhancing the performance of genetic algorithms in dynamic environments have attracted a growing interest from the community of genetic algorithms in recent years.
Yang, S +2 more
core +1 more source
Genetic evaluation of clinical mastitis traits in Holstein cattle
Czech Journal of Animal Science, 2018 The results obtained from different models for predicting breeding values for clinical mastitis (CM) in Holstein cattle were compared. CM was recorded in 30 882 lactations of 12 793 cows in 8 herds from 1996 to 2016. CM was considered either as an all-or-
Eva Kašná +2 more
doaj +1 more source
Journal of Dairy Science, 1974 Abstract Five estimators of intraherd genetic trend were compared in 13,615 Holstein first lactations from 220 progeny test herds. The preferred method estimated the trend as minus twice the regression of deviated production on time of freshening within sire-herd subclasses. Estimates of annual intraherd genetic trend from this approach were 82 kg of
R.L. Powell, A.E. Freeman
openaire +1 more source
Genetic erosion in crops: concept, research results and challenges [PDF]
, 2010 The loss of variation in crops clue to the modernization of agriculture has been described as genetic erosion The current paper discusses the different views that exist on the concept of genetic erosion in crops Genetic erosion of cultivated diversity is
Visser, L. +7 more
core +1 more source
Journal of Applied Animal Research, 2018 The aim of this study was to compare alternative models for the genetic evaluation of heifer fertility in Simmental–Simbrah cattle. The analyses were conducted using a database with 37,390 female birth information recorded from 1984 to 2007, and 59,018 ...
J. J. Baeza-Rodríguez +3 more
doaj +1 more source
Czech Journal of Animal Science, 2012 The breeding value (EBV) of Holstein cattle milk performance from the first lactation was evaluated using a regular Animal Model or by Single-Step Prediction of the genomic breeding value (GEBV).
J. Přibyl +12 more
doaj +1 more source