Results 41 to 50 of about 7,051 (197)

Efeitos ambientais que afetam o ganho de peso pré-desmama em animais Angus, Hereford, Nelore e mestiços Angus-Nelore e Hereford-Nelore [PDF]

Revista Brasileira de Zootecnia, 2003
Foram utilizados dados de 66.035 animais das raças Nelore, Hereford, Angus e mestiços Nelore x Angus e Nelore x Hereford, para avaliar a influência da idade da vaca, idade do bezerro e data juliana de nascimento sobre o ganho médio diário dos bezerros no período pré-desmama (GMD).
Teixeira, Rodrigo de Almeida, Albuquerque, Lucia Galvão de   +1 more
openaire   +7 more sources

Functional properties of the three hemoglobin phenotypes of Nelore cattle [PDF]

Genetics and Molecular Biology, 2002
Blood and stripped hemoglobin from Nelore cattle individuals were submitted to oxygen equilibrium experiments in both gasometric and spectrophotometric methods. No difference was detected in oxygen affinity and Bohr effect among Hb A, Hb B and Hb AB in experiments with both blood and stripped hemoglobin, in the presence and absence of the chloride ion.
Di Vito, A., Schwantes, A.R., Schwantes, M.L.B.   +2 more
openaire   +4 more sources

Use of Restricted Nursing and a Bovine Appeasing Substance on the Welfare, Growth Performance, and Response to Vaccination of Beef Calves at Weaning

Animal Research and One Health, EarlyView.
The effects of restricted nursing (RN) and the administration of a bovine appeasing substance (BAS) on days −8 and 0 in relation to weaning were evaluated. Both strategies were effective in improving the growth performance of beef calves. Regarding welfare, BAS ‐especially on day 0‐ was more effective than RN.
Denise E. Mussalafo, Marcelo Vedovatto, Aylpy R. D. Santos, Dalton M. Oliveira, Fabiana A. M. Sterza, Mariana Santos, Helena B. C. R. Batista, Jaíne G. Garcia, Andréa R. D. L. Souza   +8 more
wiley   +1 more source

Colostral immunoglobulins absorption in Canchim and Nelore calves [PDF]

Revista Brasileira de Zootecnia, 2004
The efficiency of absorption of colostral immunoglobulins was evaluated in five Canchim and seven Nelore calves. They received colostrum pools with concentration of 70.20 ± 6.14 mg/mL through esofageal feeder at 2, 12, 24 and 36 hours after birth. The immunoglobulins concentrations of the pools were estimated through specific gravity and measured by ...
Machado Neto, Raul, Packer, Irineu Umberto, Prado, Gladys Villas Boas do, Bessi, Rosana, Pauletti, Patricia   +4 more
openaire   +4 more sources

Characterization of Oligofructose-Induced Acute Rumen Lactic Acidosis and the Appearance of Laminitis in Zebu Cattle

Animals, 2020
The objective of this study was to characterize oligofructose-induced acute rumen lactic acidosis and its consequences in zebu cattle. We used 29 Nellore heifers which were submitted to experimental induction of laminitis by oligofructose excess.
Rejane dos Santos Sousa, Francisco Leonardo Costa de Oliveira, Mailson Rennan Borges Dias, Natalia Sato Minami, Leonardo do Amaral, Juliana Aparecida Alves dos Santos, Raimundo Alves Barrêto Júnior, Antonio Humberto Hamad Minervino, Enrico Lippi Ortolani   +8 more
doaj   +1 more source

Genetic Evaluation Weight, Carcass and Stayability in Nellore Females

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Traits related to growth, carcass quality and stayability are key components in enhancing the profitability and sustainability of Nelore cattle production systems. This study aimed to estimate heritabilities and genetic and environmental correlations for these traits using a Bayesian approach. Data from 94,703 females were analysed for weights
Isabella Silva de Carvalho, Sirlene Fernandes Lázaro, Eula Regina Carrara, Matheus Rodrigues de Souza, Humberto Tonhati   +4 more
wiley   +1 more source

Genomic Evaluation in Nellore Cattle for Reproductive Traits: Multiple Ways to Account for Missing Pedigrees

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Missing pedigrees are a common problem in most populations. Animals with unknown ancestors are usually treated as founders; however, this can underestimate inbreeding, not properly account for different base populations, and bias breeding values.
Larissa Temp, Gabriel Gubiani, Ludmilla Brunes, Claudio Magnabosco, Fernando Bussiman, Jorge Hidalgo, Daniela Lourenco, Fernando Baldi   +7 more
wiley   +1 more source

Digestibilidade in vivo de dietas contendo milho ou triticale e farelo de soja ou levedura em novilhas nelore em confinamento

Acta Scientiarum: Animal Sciences, 2008
Foram utilizadas 48 novilhas nelore com idade aproximada de 18 meses e 235kg de peso vivo para avaliar o efeito de dietas a base de milho ou triticale e farelo de soja ou levedura sobre a digestibilidade aparente da MS, PB, MO, EB, FDN e FDA utilizando a
Sandro Medroni, Ivanor Nunes do Prado, Lúcia Maria Zeoula, Willian Gonçalves do Nascimento   +3 more
doaj   +1 more source

REPRODUCTIVE TRAITS SELECTION IN NELORE BEEF CATTLE [PDF]

Ciência e Agrotecnologia, 2015
Genetic breeding programs of beef cattle in Brazil are including new features, mainly related to reproductive efficiency.Thus, it is necessary to study the effectiveness of selection and quantify genetic gain for these traits in herds. This study estimated genetic and phenotypic parameters and genetic trends for reproductive traits used in breeding ...
Moreira, Heverton Luis, Buzanskas, Marcos Eli, Munari, Danisio Prado, Canova, Érika Breda, Lôbo, Raysildo Barbosa, de Paz, Claudia Cristina Paro   +5 more
openaire   +7 more sources

Genetic Parameters of Resilience Indicators Across Growth in Beef Heifers and Their Associations With Weight, Reproduction, Calf Performance and Pre‐Weaning Survival

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT In tropical extensive beef cattle systems, heifers raised on pasture are exposed to various environmental challenges that affect their growth and reproductive performance during the first breeding. Resilience indicators derived from deviations in longitudinal traits can quantify the magnitude of these challenges and the ability of an animal to
Gustavo R. D. Rodrigues, Júlia P. S. Valente, Vanessa T. Rezende, Luis F. C. Araújo, João B. Silva Neto, Lúcio F. M. Mota, Mário L. Santana, Roberta C. Canesin, Sarah F. M. Bonilha, Lucia G. Albuquerque, Maria E. Z. Mercadante, Joslaine N. S. G. Cyrillo   +11 more
wiley   +1 more source