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.
29/Aug/2025
Lorena Carla Gomes Vernaschi
, Altair Antonio Valloto
, Lenira El Faro Zadra
, Rodrigo de Almeida Teixeira
, Laila Talarico Dias
ABSTRACT The objective of this study was to identify how linear-type traits impact the culling risk and which traits are most associated to productive life of Holstein cows. Linear classification and test-day milk yield data of 34,653 primiparous cows obtained from the database of Associação Paranaense de Criadores de Bovinos da Raça Holandesa were used. Survival analysis was performed by PHREG procedure of SAS/STAT 9.4 using a Cox regression model. The model considered herd and year of the linear classification […]
Keywords: linear classification; longevity; survival analysis
01/Oct/2007
Sandra Aidar de Queiroz, Gustavo Figueiredo, Josineudson Augusto II de Vasconcelos Silva, Ana Carolina Espasandin, Sarah Laguna Meirelles, João Ademir de Oliveira
DOI: 10.1590/S1516-35982007000600013
The aim of this study was to estimate the heritability of stayability (HP) in Caracu cattle in order to evaluate its usage as a selection criterion for longevity. Stayability was defined as the probability of a cow to be producing in the herd at the ages of 48 (HP48), 60 (HP60) and 72 (HP72) months. Binary observations indicating failure (zero) or success (one) were assigned to records on 5487, 4947 and 4308 cows with at least two lactations at the […]
Keywords: dual-purpose cattle; longevity; threshold trait