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AbstractFull Text

This study aimed to identify the frequency of occurrence of Eimeria species in Holstein (taurine dairy cattle) and Nelore (zebu beef cattle) on 12 farms in the state of Goiás, Brazil. A total of 2,601 animals were evaluated, and the cattle were divided into the following age-group categories: up to ...

Author(s)
Cruvinel, L. B.; Nicaretta, J. E.; Bastos, T. de S. A.; Couto, L. F. M.; Santos, J. B. dos; Zapa, D. M. B.; Cavalcante, A. S. de A.; Cruz, B. C.; Borges, D. G. L.; Borges, F. de A.; Soares, V. E.; Lopes, W. D. Z.
Publisher
Colégio Brasileiro de Parasitologia Veterinária, São Paulo, Brazil
Citation
Brazilian Journal of Veterinary Parasitology, 2018, 27, 2, pp 169-176
Abstract

Water is the most important nutrient in animal nutrition; however, water intake is rarely measured. The objective of this study was to determine whether previously published water intake (WI) equations for beef cattle would accurately predict WI from four experiments conducted under tropical...

Author(s)
Zanetti, D.; Prados, L. F.; Menezes, A. C. B.; Silva, B. C.; Pacheco, M. V. C.; Silva, F. A. S.; Costa e Silva, L. F.; Detmann, E.; Engle, T. E.; Valadares Filho, S. C.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2019, 97, 3, pp 1364-1374
AbstractFull Text

The aim of this study was to quantify the effects of the genetic group, heat stress and somatic cell count (SCS) on the milk production and composition of Holstein, Jersey and Girolando genotypes cows in subtropical climates. Were used 14181 milk test-day records from a seven years period in a...

Author(s)
Ludovico, A.; Trentin, M.; Rêgo, F. C. A.
Publisher
Instituto de Zootecnia, Facultad de Veterinaria, Córdoba, Spain
Citation
Archivos de Zootecnia, 2019, 68, 262, pp 236-243
Abstract

We compared different Bayesian models to handle censored data for genetic parameters estimation of age at first calving (AFC) in Brazilian Brahman cattle. Data from females with AFC above 1825 days of age were assumed to have failed to calve and were considered as censored records. Data including...

Author(s)
Fernandes Lázaro, S.; Varona, L.; Fonseca e Silva, F.; Ventura, H. T.; Veroneze, R.; Brito, L. C.; Costa, E. V.; Sávio Lopes, P.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2019, 221, pp 177-180
Abstract

The objective of this study was to investigate the population genetic structure and the effects of inbreeding on growth traits of Nellore breed animals from the Amazon biome. The database used for the analyzes contained records of 1,402,287 animals born between the years of 1950 and 2012 and weight ...

Author(s)
Dotta, J. C.; Falcão, A. J. da S.; Carneiro, P. L. S.; Conti, A. C. M.; Rezende, M. P. G. de
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2019, 31, 2, pp Article 17
AbstractFull Text

The objective of this study was to evaluate the SNPs rs471462296, rs456245081 and rs438495570 of the DGAT1 gene in 109 Nellore cattle in Brazil. Genomic DNA extraction was performed from the blood of the animals using the Illustrated Blood Genomic Prep Mini Spin kit (GE Healthcare, UK). The...

Author(s)
Freire, K. M. B.; Silva, C. C.; Duarte, S. S. M.; Teodoro, L. S.; Costa, E. O. A.; Silva, D. C.; Godoy, F. R.; Cruz, A. D. da; Cruz, A. S. da
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2019, 71, 2, pp 720-721
Abstract

The objective of the present study was to identify genetic variation in heifer pregnancy due to heat stress in Nelore cattle during the breeding season. The Nelore heifers were born between 2003 and 2013 on six farms located in three Brazilian States. Heifer pregnancy (HP) was analyzed as a binary...

Author(s)
Santana Júnior, M. L.; Eler, J. P.; Oliveira Júnior, G. A.; Bignardi, A. B.; Pereira, R. J.; Ferraz, J. B. S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2018, 218, pp 101-107
AbstractFull Text

The intensification of beef cattle production systems, aiming to increase production rates, requires the use of technologies that favor the rational exploitation of livestock. Among the animal indicators, reproductive efficiency stands out because it is closely associated with the conditions of...

Author(s)
Sousa, R. T. de; Gonçalves, J. de L.; Santos, S. F. dos; Fernandes, A. M. F.; Ricci, G. dela
Publisher
Pubvet, Maringá, Brazil
Citation
PUBVET, 2018, 12, 5, pp RF2082
Abstract

This work describes the selection criteria for sexual maturity, the different factors that affect it and the impacts of its application on Nelore beef cattle production in Brazil.

Author(s)
Brunes, L. C.; Magnabosco, C. U.; Baldi, F. S.; Oliveira e Costa, M. F.; Castro, L. M. de; Santos, M. F. dos; Queiroz, L. C. R. de; Guimarães, N. C.
Publisher
Embrapa Cerrados, Planaltina, Brazil
Citation
Documentos - Embrapa Cerrados, 2018, No.346, pp 38 pp.
Abstract

In tropical production systems, beef cattle are raised in highly heterogeneous environments. Heterogeneity is, therefore, expected to exist in the (co)variance components for traits of economic interest in different production environments. The main objective of the present study was to estimate...

Author(s)
Santana Júnior, M. L.; Eler, J. P.; Bignardi, A. B.; Boligon, A. A.; Ferraz, J. B. S.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2018, 58, 7, pp 1201-1209

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