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 aim of this study was to describe the population structure of the registered Polled Gir cattle in Brazil. Descriptive statistics of the distribution of the number of progeny, the generation interval and the effective population size were estimated using pedigree records of animals registered from 1976 to 1998. The observed generation interval in each of four periods (1979-1983, 1984-1988, 1989-1993 and 1994-1998) was, respectively, 4.5, 6.05, 7.17 and 9.14 yr. The effective population size for the periods were, respectively, 3, 22, 63 and 70.
Population Parameters of the Registered Polled Gir in Brazil
Faria,Fábio José Carvalho and Filho,Anibal Eugênio Vercesi and Madalena,Fernando Enrique and Josahkian,Luiz Antônio. Population Parameters of the Registered Polled Gir in Brazil. R. Bras. Zootec. [online]. 2001, vol.30, 6 suppl., [cited 2026-03-08], pp.1984-1988. Available from: <https://rbz.org.br/article/population-parameters-of-the-registered-polled-gir-in-brazil/>. ISSN 1516-3598. http://doi.org/10.1590/S1516-35982001000800004.
Faria,Fábio José Carvalho; Filho,Anibal Eugênio Vercesi; Madalena,Fernando Enrique; Josahkian,Luiz Antônio. Population Parameters of the Registered Polled Gir in Brazil. R. Bras. Zootec., v.30, 6 suppl., p. 1984-1988. Dec. 2001. Available from: <https://rbz.org.br/article/population-parameters-of-the-registered-polled-gir-in-brazil/>. acess on 08 Mar. 2026. http://doi.org/10.1590/S1516-35982001000800004.
Faria,Fábio José Carvalho, & Filho,Anibal Eugênio Vercesi, & Madalena,Fernando Enrique, & Josahkian,Luiz Antônio. (2001). Population Parameters of the Registered Polled Gir in Brazil. R. Bras. Zootec., 30(6 suppl.) , 1984-1988. http://doi.org/10.1590/S1516-35982001000800004.
FariaFábio José Carvalho, FilhoAnibal Eugênio Vercesi, MadalenaFernando Enrique, JosahkianLuiz Antônio. Population Parameters of the Registered Polled Gir in Brazil. R. Bras. Zootec. [Internet]. 2001 Dec [cited 2026 Mar 08]; 30(6 suppl.): 1984-1988. Available from: https://rbz.org.br/article/population-parameters-of-the-registered-polled-gir-in-brazil/. http://doi.org/10.1590/S1516-35982001000800004.
Figure 3
Ruminal disappearance of ash-free neutral detergent fiber (aNDFom) at 30 h of in situ incubation in corn husks (fresh and ensiled) treated with calcium oxide (CaO) and a mixture of corn heavy steep water and sugarcane molasses (HM).
