The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The objective of this study was to estimate the genetic correlation between semen (semen volume, sperm motility and spermatozoa concentration) and egg production traits (partial and total egg production, and egg weight) from a White Leghorn strain. In order to obtain semen traits, 698 DD1 strain roosters developed at CNPSA/EMBRAPA were used. The semen were collected at 24, 26 and 28 wk of age, and, to obtain the egg traits, full sisters (average of two sisters per male) were used. According to the obtained results, for the selection to increase the total egg production (rg = .44±.09) and egg weight (rg = .67±.04), the concentration of spermatozoa could be used, when measured at 24 and 26 wk of age, respectively.
Genetic parameters for semen traits in a White Leghorn strain: 2. Correlation with egg production traits
Bongalhardo,Denise Calisto and Dionello,Nelson José Laurino and Ledur,Mônica Corrêa and Rutz,Fernando. Genetic parameters for semen traits in a White Leghorn strain: 2. Correlation with egg production traits. R. Bras. Zootec. [online]. 2000, vol.29, 2, [cited 2026-04-24], pp.392-396. Available from: <https://rbz.org.br/article/genetic-parameters-for-semen-traits-in-a-white-leghorn-strain-2-correlation-with-egg-production-traits/>. ISSN 1516-3598. https://doi.org/10.1590/S1516-35982000000200011.
Bongalhardo,Denise Calisto; Dionello,Nelson José Laurino; Ledur,Mônica Corrêa; Rutz,Fernando. Genetic parameters for semen traits in a White Leghorn strain: 2. Correlation with egg production traits. R. Bras. Zootec., v.29, 2, p. 392-396. Apr. 2000. Available from: <https://rbz.org.br/article/genetic-parameters-for-semen-traits-in-a-white-leghorn-strain-2-correlation-with-egg-production-traits/>. acess on 24 Apr. 2026. https://doi.org/10.1590/S1516-35982000000200011.
Bongalhardo,Denise Calisto, & Dionello,Nelson José Laurino, & Ledur,Mônica Corrêa, & Rutz,Fernando. (2000). Genetic parameters for semen traits in a White Leghorn strain: 2. Correlation with egg production traits. R. Bras. Zootec., 29(2) , 392-396. https://doi.org/10.1590/S1516-35982000000200011.
BongalhardoDenise Calisto, DionelloNelson José Laurino, LedurMônica Corrêa, RutzFernando. Genetic parameters for semen traits in a White Leghorn strain: 2. Correlation with egg production traits. R. Bras. Zootec. [Internet]. 2000 Apr [cited 2026 Apr 24]; 29(2): 392-396. Available from: https://rbz.org.br/article/genetic-parameters-for-semen-traits-in-a-white-leghorn-strain-2-correlation-with-egg-production-traits/. https://doi.org/10.1590/S1516-35982000000200011.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
