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.
A deterministic approach was used to predict genetic gain and net present value for a breeding program in a dual-purpose zebu cattle population. The considered criterias were body weights, dairy and reproductive traits. High genetic gains and profit were obtained. More than 70% of genetic profit was net present value, justifying selection costs. The small proportion of recorded animals in relationship to the beneficial population of the improvement and the high economic values of traits could explain this profit.
Breeding program evaluation for dual purpose zebu cattle
Lôbo,Raimundo Nonato Braga and Penna,Vânia Maldini and Madalena,Fernando Enrique. Breeding program evaluation for dual purpose zebu cattle. R. Bras. Zootec. [online]. 2000, vol.29, 5, [cited 2026-06-23], pp.1349-1360. Available from: <https://rbz.org.br/article/breeding-program-evaluation-for-dual-purpose-zebu-cattle/>. ISSN 1516-3598. https://doi.org/10.1590/S1516-35982000000500013.
Lôbo,Raimundo Nonato Braga; Penna,Vânia Maldini; Madalena,Fernando Enrique. Breeding program evaluation for dual purpose zebu cattle. R. Bras. Zootec., v.29, 5, p. 1349-1360. Oct. 2000. Available from: <https://rbz.org.br/article/breeding-program-evaluation-for-dual-purpose-zebu-cattle/>. acess on 23 Jun. 2026. https://doi.org/10.1590/S1516-35982000000500013.
Lôbo,Raimundo Nonato Braga, & Penna,Vânia Maldini, & Madalena,Fernando Enrique. (2000). Breeding program evaluation for dual purpose zebu cattle. R. Bras. Zootec., 29(5) , 1349-1360. https://doi.org/10.1590/S1516-35982000000500013.
LôboRaimundo Nonato Braga, PennaVânia Maldini, MadalenaFernando Enrique. Breeding program evaluation for dual purpose zebu cattle. R. Bras. Zootec. [Internet]. 2000 Oct [cited 2026 Jun 23]; 29(5): 1349-1360. Available from: https://rbz.org.br/article/breeding-program-evaluation-for-dual-purpose-zebu-cattle/. https://doi.org/10.1590/S1516-35982000000500013.
Figure 3
Phosphorus (P) concentration (as received) determined by absorbance at 725 nm in spectrophotometer as a linear function of P determined by mean red channel in smartphone images (β0 and β1 are intercept and slope, respectively; n = 24).
