2 Bos Indicus
Mostrando 1-12 de 209 artigos, teses e dissertações.
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1. Antral follicle count, productive and reproductive parameters in Bos indicus and Bos indicus-taurus prepubertal heifers with early puberty induction
RESUMO Novilhas pré-púberes Nelore (G-N=15) e mestiças Nelore x Aberdeen Angus (G-NA=15) foram utilizadas neste estudo. CFA, peso vivo, escore de condição corporal (ECC), diâmetros do ovário e folículo dominante (FD) foram determinados em cada animal. A indução da puberdade foi realizada pela inserção de um dispositivo de progesterona de quarto u
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
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2. Relationships between antral follicle counts and ovarian morphology of Bos indicus of different ages
RESUMO O presente estudo teve como objetivo avaliar a relação entre a contagem de folículos antrais (CFA) e a morfologia ovariana de Bos indicus em diferentes faixas etárias: 12-23 meses (G1), 24-35 meses (G2), 36-47 meses (G3), 48-59 meses (G4) e >60 meses (G5). Os ovários foram coletados individualmente e enviados ao laboratório, onde suas caracterí
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
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3. FUZZY LOGIC MODELING OF THE OCULAR TEMPERATURE OF CATTLE IN THERMAL STRESS CONDITIONS
ABSTRACT This study proposes a fuzzy logic model capable of predicting the ocular temperature (OT) of beef cattle by means of infrared thermography. The goal of this study is to establish a methodology for making decisions related to animal welfare. The experiment was carried out at a commercial beef production farm, located in the south of Minas Gerais stat
Eng. Agríc.. Publicado em: 2021-08
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4. Validation of reference genes for gene expression studies in bovine oocytes and cumulus cells derived from in vitro maturation
Abstract Quantitative real-time PCR (qPCR) is a valuable tool for gene expression studies and it is necessary to choose an ideal endogenous reference gene for data normalization. This work studied a set of reference genes in oocytes and cumulus cells of COCs (Cumulus-Oocyte Complexes) that are suitable for relative gene expression analyses after in vitro mat
Anim. Reprod.. Publicado em: 25/11/2019
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5. Feedlot performance and carcass yield of Hararghe Highland (Bos indicus) bulls using different concentrate feeds
ABSTRACT. A study was conducted to evaluate the feedlot performance and carcass yield of Hararghe Highland bull using different types of concentrate feeds fed grass hay as a basal diet in eastern Ethiopia. Thirty Hararghe Highland bulls were blocked by weight and randomly allocated to one of the following six treatments. T1 = Hay ad libitum + 4kg dried cafet
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
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6. Candidate mutations used to aid the prediction of genetic merit for female reproductive traits in tropical beef cattle
ABSTRACT In this study, we aimed to provide a wet laboratory validation for a set of single nucleotide polymorphisms (SNP), which had been identified as candidate functional variants in silico. Genotyping for candidate SNP was performed in Brahman and Tropical Composite cattle. After quality control, 29 SNP were first investigated individually for their asso
R. Bras. Zootec.. Publicado em: 29/11/2018
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7. Effect of high energy intake on carcass composition and hypothalamic gene expression in Bos indicus heifers
ABSTRACT The objective of this study was to evaluate the effect of high or low energy intake on carcass composition and expression of hypothalamic genes related to the onset of puberty. Twenty-four prepubertal Nellore heifers, 18-20- months-old, with 275.3±18.0 kg body weight (BW), and 4.9±0.2 (1-9 scale) body condition score (BCS) were randomly assigned t
R. Bras. Zootec.. Publicado em: 2017-08
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8. Comportamento reprodutivo de vacas leiteiras mestiças pastando um sistema silvipastoril intensivo em condições de floresta tropical seca
RESUMO É amplamente aceito que a seleção para alta produção de leite em vacas leiteiras tem interferido no seu desempenho reprodutivo. Depois do parto, um extraordinário desafio nutritivo é experimentado pelas vacas leiteiras, devido a uma assincronia entre a ocorrência do pico de lactação e a do pico de consumo de matéria seca. Este estudo foi re
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2017-02
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9. Behavior affected by routine oxytocin injection in crossbred cows in the tropics
ABSTRACT The objective of the study was to determine the effect of routine intramuscular injection of oxytocin to induce milk ejection on behavior assessed in terms of stress and rectal temperature in crossbred cows (Bos indicus × Bos taurus) in the tropics of Veracruz, México. Immediately after calving, cows were milked twice a day (n = 210) and randomly
R. Bras. Zootec.. Publicado em: 2016-08
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10. Taxa de fertilidade de novilhas de diferentes grupos genéticos com primeiro serviço aos 14 meses de idade
Foram avaliadas as taxas de reconcepção de 98 novilhas primíparas (34 Guzerá - G, 32, 1/2 Guzerá x 1/2 Nelore - GN e 32,1/2 Red Angus x 1/2 Nelore - AN) com 14 meses de idade e peso médio de aproximadamente 249,65kg, criadas em pastos de Brachiaria brizantha cv Marandu. Na segunda estação de monta (EM), foram utilizadas apenas as 36 primíparas gesta
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2016-04
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11. Oocyte production in Nellore cows supplemented with long-chain fatty acid soaps
ABSTRACT This study was conducted to evaluate the effects of long-chain fatty acid soaps (LCFAS) of soybean oil on the production and quality of aspirated cumulus-oocyte complexes (COC) of lactating Nellore (Bos taurus indicus) cows. The effects of LCFAS on the plasma concentration of lipoproteins, total cholesterol, triacylglycerol, urea N, and insulin were
R. Bras. Zootec.. Publicado em: 2016-03
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12. Frequências de genes candidatos e associações com características de carcaça e da carne em bovinos da raça Nelore e cruzados
Resumo: O objetivo deste trabalho foi estimar as frequências alélicas dos polimorfismos IGF2/MboII (G > T) do gene "insulin-like growth fator 2" (IGF2), DQ499531.1:g.134 A> T do gene "pro-melanin-concentrating hormone" (PMCH) e DQ667048.1:g.3290G> T do gene "RAR-related orphan receptor C" (RORC) em bovinos de corte de diferentes grupos genéticos, e avalia
Pesq. agropec. bras.. Publicado em: 2016-02