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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 was to estimate genetic correlations for persistency, milk yield and somatic cell score (SCS) in Holstein cattle in Brazil. A dataset with 190389 records of test-day milk and of test-day SCS from 21824 cows was used. Two-trait random regression model with a fourth order Legendre...

Author(s)
Padilha, A. H.; Alfonzo, E. P. M.; Daltro, D. S.; Torres, H. A. L.; Braccini Neto, J.; Cobuci, J. A.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2019, 59, 2, pp 207-215
Abstract

The objective of the present work was to evaluate the effect of somatic cell score on the longevity of Holstein cows raised all over Brazil, using a piecewise Weibull proportional-hazard model. The following two longevity traits were defined: true longevity, number of days from first calving to...

Author(s)
Kern, E. L.; Cobuci, J. A.; Braccini Neto, J.; Daltro, D. dos S.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2019, 59, 8, pp 1546-1552
AbstractFull Text

Injuries to bovine hooves are highly painful and lead to serious health problems when left untreated, directly affecting animal productivity and welfare. The prevalence of these diseases is already well established in dairy cattle, but little is known about their occurrence in beef cattle from...

Author(s)
Viana, R. B.; Monteiro, B. M.; Melo, W. de O.; Oliveira, D. R. de; Daher, L. C. C.; Ribeiro Filho, J. D.
Publisher
Pontificia Universidade Católica do Paraná, São José dos Pinhais, Brazil
Citation
Revista Acadêmica: Ciência Animal, 2018, 16, Special edition, pp e163005
Abstract

The aim of this retrospective study was to use RT-PCR and nucleotide sequencing analysis to determine the G (VP7 gene) and P (VP4 gene) genotypes of 155 Brazilian bovine rotavirus A (RVA) wild-type strains detected in diarrheic calves from all Brazilian geographical regions from 2006 to 2015. The...

Author(s)
Medeiros, T. N. da S.; Lorenzetti, E.; Alfieri, A. F.; Alfieri, A. A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Comparative Immunology, Microbiology & Infectious Diseases, 2019, 64, pp 90-98
Abstract

Propolis is a substance produced by bees, especially Apis mellifera, from resins of plant shoots. It possesses numerous biological properties, such as antimicrobial and anti-inlammatory. Activities such as organic dairy farming show high demand for natural products with proprieties like those of...

Author(s)
Klahr, G. T.; Isola, J. V. V.; Giehl, D. Z.; Rosa, C. S. da; Martins, A. A.; Bartmer, M. E.; Segabinazzi, L. R.
Publisher
Centro de Ciências Biológicas - UFSC, Santa Catarina, Brazil
Citation
Biotemas, 2019, 32, 1, pp 1-10
AbstractFull Text

The objective of this work was to identify genetic polymorphisms of leptin, β-lactoglobulin and pituitary transcription factor (PIT1) and to evaluate its effects on the chemical composition and milk somatic cell count of crossbred dairy cows living in a hot climate. A total of 291 crossbred dairy...

Author(s)
Ferreira, J. B.; Guilhermino, M. M.; Leite, J. H. G. M.; Sousa, J. E. R.; Araújo, B. V. S.; Vasconcelos, A. M.; Lara, M. A. C.; Façanha, D. A. E.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2019, 71, 2, pp 715-719
AbstractFull Text

An experiment was conducted to evaluate the feeding behavior of feedlot-finished bulls and cull cows in the Cerrado region of Piauí State, Brazil. Forty Zebu cattle were used, of which 20 steers averaging 283.0±20.82 kg initial body weight and 30 months of age; and 20 cull cows averaging...

Author(s)
Santos, P. B. dos; Santana Júnior, H. A. de; Araújo, M. J. de; Oliveira, A. P. de; Santana, E. O. C.; Mendes, F. B. L.
Publisher
Universidade Estadual de Maringá, Maringá, Brazil
Citation
Acta Scientiarum - Animal Sciences, 2018, 40, pp e35528
Abstract

The objective of the study was to determine the factors related to beef cattle carcass bruises. Handling, transportation and unloading data from cattle purchased by a slaughterhouse in southern Brazil were obtained to assess their associations with carcass bruising (occurrence or not) and the...

Author(s)
Mendonça, F. S.; Vaz, R. Z.; Cardoso, F. F.; Restle, J.; Vaz, F. N.; Pascoal, L. L.; Reimann, F. A.; Boligon, A. A.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2018, 58, 2, pp 385-392

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