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.
01/May/2011
Lucas Teixeira Costa, Fabiano Ferreira da Silva, Cristina Mattos Veloso, Aureliano José Vieira Pires, Aires Lima Rocha Neto, Fabrício Bacelar Lima Mendes, [...]
DOI: 10.1590/S1516-35982011000500030
Sixteen crossbred Holstein × Zebu cows (groups from ½ to ¾ of Holstein × Zebu) at third of fourth lactation were allotted to four 4 × 4 Latin squares to evaluate the economical viability of increasing dietary concentrate level. Cows presented previous milk yield from 2,500 to 3,000 kg, adjusted for 300 days, and grazed pasture during the rainy season, and with 110 days of laction in the beginning of the experimental period. Because of the prices of milk and […]
Keywords: concentrated; costs, milk; price; productive; systems of production
01/Apr/2010
Arione Augusti Boligon, Lucia Galvão de Albuquerque, Maria Eugênia Zerlotti Mercadante, Raysildo Barbosa Lôbo
DOI: 10.1590/S1516-35982010000400007
Data from 23,120 Nellore animals were used to estimate genetic parameters for age at first calving, average gains from weaning to yearling and from yearling to after yearling, weaning weight, yearling weight, after yearling weight and weight at 2 and 5 years of age. Animal models were fitted by Restricted Maximum likelihood Method. Estimate heritability for age at first calving, weaning to yearling weight gain, yearling to after yearling weight gain, weight at weaning, yearling weight, after yearling weight and […]
Keywords: beef cattle; genetic parameters; heritability; productive; reproductive traits