Search Results - "Fernanda Cristina Breda"
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Genetic and environmental factors that affect tick infestation in Nelore x Angus crossbreed cattle
Published in Ciência rural (01-01-2021)“…This study evaluated the effects of seasons and latitude on tick counting and determined the best model to estimate genetic parameters for tick count and hair…”
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Genetic evaluation models for post-weaning weight gain in a multibreed Angus-Nelore population
Published in Pesquisa agropecuaria brasileira (01-01-2019)“…The objective of this work was to identify the most suitable model for the genetic evaluation of post-weaning weight gain in a multibreed Angus-Nelore…”
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3
Strategies to control inbreeding in a pig breeding program: a simulation study
Published in Ciência rural (2019)“…The objective of this study was to evaluate, through data simulation, the impact of restrictions on the maximum number of full- and half-sibs selected for…”
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4
Formation of homogeneous groups of bovine milk production units via multivariate statistical techniques
Published in Ciência rural (01-01-2018)“…Milk supply chain in Brazil exhibits significant production system heterogeneity in all federal units. Thus, the objective of this study was to form…”
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5
Principal component analysis of breeding values for growth, reproductive and visual score traits of Nellore cattle
Published in Livestock science (01-11-2020)“…•PCAs using the correlation matrix of EBVs for seven traits were investigated.•The first two PCs explained over 96% of the additive genetic variance.•PCs…”
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Genetic evaluation models for resistance to ticks in a crossbred Angus-Nellore population
Published in Ciência rural (2021)“…This research identified the animal model that best describes the genetic and residual variations for tick counts in yearlings from a crossbred Angus-Nellore…”
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7
Impact of reproductive and productive rates on levels of inbreeding and genetic gain of pigs through data simulation
Published in Revista brasileira de zootecnia (2019)“…ABSTRACT The objective of this study was to evaluate the impact of farrowing and mortality rates on inbreeding levels and genetic gain through data simulation…”
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8
Milk production and percentages of fat and protein in Holstein breed cows raised in Rio Grande do Sul, Brazil
Published in Ciência rural (01-04-2016)“…The objective of this study was to identify a nonlinear regression model that better describes the milk production and the percentages of fat and protein…”
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9
Genotypic parameters for egg production in pure breed hens by using random regression model
Published in Ciência rural (2017)“…This study aimed to test different genotypic and residual covariance matrix structures in random regression models to model the egg production of Barred…”
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10
COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
Published in Ciência animal brasileira (01-12-2015)“…Abstract The objective of this study was to estimate the heritability, genetic correlation and estimated breeding values for age at first (AFC) and second…”
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11
Random regression models using different functions to estimate genetic parameters for milk production in Holstein Friesians
Published in Ciência rural (01-09-2016)“…The objective of this study was to compare the functions of Wilmink and Ali and Schaeffer with Legendre polynomials in random regression models using…”
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12
Influence of genotype-environment interaction on the classification of Nellore bulls in Southern Brazil
Published in Acta scientiarum. Animal sciences (2015)“…The aim of this study was to assess the occurrence of genotype-environment interaction, as well as its effects on the magnitude of genetic parameters and the…”
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13
Correlações entre contagem de células somáticas e parâmetros físico-químicos e microbiológicos de qualidade do leite
Published in Ciência animal brasileira (01-12-2014)“…Objetivou-se avaliar as correlações entre contagem de células somáticas (CCS) e os constituintes do leite e verificar as associações das condições ambientais…”
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14
Genetic parameters and genetic and phenotypic trends of performance traits of equines from the Brazilian Army
Published in Revista brasileira de zootecnia (01-06-2012)“…The objective of this research was to compare the magnitude of genetic parameters (coefficients of heritability and genetic correlation) as estimated by the…”
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15
Genetic divergence among Nellore breed herds raised in the South Region of Brazil/Divergencia genetica entre rebanhos da raca Nelore criados na regiao Sul do Brasil
Published in Ciência rural (01-05-2013)“…The objective of this study was to evaluate the genetic divergence among Nellore breed animals raised in 45 farms in the Southern Region of Brazil. The…”
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16
Curva de crescimento de diferentes linhagens de frango de corte caipira
Published in Ciência rural (01-10-2015)“…Objetivou-se identificar o modelo de regressão não linear mais adequado para descrever a curva de crescimento de quatro linhagens de frangos caipira e…”
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17
Estudo da curva de crescimento de ovinos Santa Inês
Published in Revista brasileira de zootecnia (2006)“…Utilizaram-se 7.271 registros de pesos do nascimento aos 196 dias de idade de 952 crias de ovinos Santa Inês, controlados de 1983 a 2000, com os objetivos de…”
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18
Parâmetros genéticos para produção de leite no dia do controle de vacas da raça Holandesa utilizando modelos de análises de fatores e componentes principais
Published in Ciência rural (01-06-2015)“…Objetivou-se comparar um modelo multi-característica padrão com modelos de análise de fatores (AF) e de componentes principais (CP) para estimar parâmetros…”
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19
Modelos para ajuste da produção de gases em silagens de girassol e milho
Published in Pesquisa agropecuaria brasileira (01-02-2008)“…O objetivo deste trabalho foi identificar entre os modelos Brody, Von Bertalanffy, Gompertz, France, Logístico, Logístico modificado e Logístico…”
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Impact of different numbers of milk test-day records during lactation on the reliability of estimated breeding values
Published in Tropical animal health and production (01-10-2022)“…The objective of this study was to evaluate the impact of the reduction in the number of test-day records per lactation on genetic parameters of test-day milk…”
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