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Genetic evaluation of lactation persistency in the Gyr breed by using a two-Trait random regression model
(2022-01-01)
Context: Lactation persistency (LP) is an economically important characteristic to include in the selection objectives of the Gyr breed. Two persistency measures were tested to establish their contribution to the genetic ...
CHEMICAL AND SENSORY CHARACTERISTICS IN THE SELECTION OF BOURBON GENOTYPES
(2021-01-12)
The evaluation of coffee quality in Brazil for commercialization is conducted mainly through sensory analysis, also known as the cup test, in which professional tasters evaluate and score various attributes. The adoption ...
Genetic parameters for milk yield of Bubalus bubalis using unadjusted and adjusted milk production for days in milk.
(Pagepress Publ, 2007-01-01)
The objectives of this study were to estimate genetic parameters for unadjusted and adjusted milk production for 270 and 305 days of lactation and, subsequently, to verify the coincidence of rank of 2%, 5%, 20% and 40% ...
Genetic parameters for milk yield of Bubalus bubalis using unadjusted and adjusted milk production for days in milk
(2007-12-01)
The objectives of this study were to estimate genetic parameters for unadjusted and adjusted milk production for 270 and 305 days of lactation and, subsequently, to verify the coincidence of rank of 2%, 5%, 20% and 40% ...
Genetic associations between accumulated productivity, and reproductive and growth traits in Nelore cattle
(Elsevier B.V., 2008-09-01)
The total meat yield in a beef cattle production cycle is economically very important and depends on the number of calves born per year or birth season, being directly related to reproductive potential. Accumulated ...
Estimates of genetic parameters for scrotal circumference using random regression models in Nelore cattle
(Elsevier B.V., 2011-05-01)
A total of 15,901 scrotal circumference (SC) records from 5300 Nelore bulls, ranging from 229 to 560 days of age, were used with the objective of estimating (co)variance functions for SC, using random regression models. ...
Genetic association between body composition measured by ultrasound and visual scores in Brazilian Nelore cattle
(Amer Soc Animal Science, 2012-12-01)
The objective of this study was to evaluate the genetic variability of body composition traits measured by ultrasound, growth traits, and visual scores as well as their genetic associations in Nelore cattle. A total of ...
Genetic parameters, genetic trends, and principal component analysis for productive and reproductive traits of Guzera beef cattle
(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2019-01-01)
The objectives of this study were to estimate genetic parameters and genetic trends and perform principal component analysis for the following traits: body weight adjusted at 210 days of age (W210), one year (W365), and ...
Análise genético-quantitativa de pesos aos 8, 12, 18 e 24 meses de idade em um rebanho da raça Guzerá
(Sociedade Brasileira de Zootecnia, 2003-12-01)
O objetivo deste trabalho foi obter estimativas de herdabilidades, correlações genéticas, tendências genéticas e correlações de rank dos touros, para os pesos aos 8, 12, 18 e 24 meses de idade, no rebanho Guzerá do Campus ...
Additive genetic relationships between scrotal circumference, heifer pregnancy, and stayability in Nellore cattle
(AMER SOC ANIMAL SCIENCE, 2010)
Scrotal circumference data from 47,605 Nellore young bulls, measured at around 18 mo of age (SC18), were analyzed simultaneously with 27,924 heifer pregnancy (HP) and 80,831 stayability (STAY) records to estimate their ...