Beef System
Mostrando 1-12 de 149 artigos, teses e dissertações.
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1. Financial efficiency in the confinement system for beef cattle
RESUMO O sistema de criação de gado de corte no Brasil vem crescendo cada vez mais no histórico de produção animal, enquadrando-se no cenário mundial como o principal exportador de carne bovina. A fim de aumentar essa eficiência, tem-se como objetivo avaliar fatores que afetam o confinamento de bovinos de corte e influenciam na lucratividade e rentabi
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
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2. 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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3. Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
ABSTRACT Traditional livestock productivity is hard to estimate, since it depends on a gamut of animal production indicators that are difficult to measure for many farms. Thus, we propose an analytical method for estimating productivity and understanding the importance of animal production indicators under different full-cycle cattle production systems in Br
Sci. agric. (Piracicaba, Braz.). Publicado em: 04/11/2019
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4. Análise bioeconômica do farelo de arroz na recria de bezerras de corte em azevém
RESUMO Objetivou-se avaliar a economicidade, o desempenho produtivo e o desenvolvimento das estruturas corporais relacionadas ao trato reprodutivo de bezerras de corte mantidas exclusivamente em pastagem de azevém (Lolium multiflorum Lam.) ou em pastagem de azevém recebendo 0,5 e 1,0% do peso corporal (PC) de farelo de arroz integral (FAI) como suplemento.
Arq. Bras. Med. Vet. Zootec.. Publicado em: 10/10/2019
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5. Citrus pulp-based supplement reduces the detrimental effects of high grazing pressure on the performance of beef cattle under a rotational system of Urochloa brizantha
RESUMO Os objetivos foram avaliar o desempenho de tourinhos em duas estratégias de pastejo e a suplementação energética em um sistema de lotação rotacionadade capim marandu (Urochloa brizantha) e avaliar a composição morfológica e bromatológica da gramínea. Oitenta bezerros não castrados com 8 meses de idade [224 ± 2,4 kg peso vivo (PV)] distrib
Rev. bras. saúde prod. anim.. Publicado em: 15/07/2019
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6. Leaf tissue flows and defoliation patterns of Alexandergrass grazed by heifers receiving energy supplement
ABSTRACT. The study was carried out to evaluate defoliation patterns and to quantify leaf tissue flows in Alexandergrass (Urochloa plantaginea (Link.) Hitch) grazed by beef heifers receiving whole rice bran in three levels of supplementation (0, 0.5 and 1 % of body weight). A rotational stocking grazing method and two area replications were utilized. The exp
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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7. Bioactive peptides from beef products fermented by acid whey – in vitro and in silico study
ABSTRACT: This research investigated the potential of beef products with acid whey to release bioactive peptides and thereby emphasize their health-promoting potential. Peptide sequences were isolated and identified by liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS). Firstly, the antihealth properties (toxicity, allergenicity) of
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-07
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8. Análise bioeconômica de períodos de suplementação proteico-energética na estação seca para novilhas Nelore em pastagem diferida de Urochloa decumbens
RESUMO A suplementação proteico-energética (SPE) é uma estratégia adequada à bovinocultura de corte no período seco do ano, embora sua adoção equivocada possa comprometer seu benefício/custo. O objetivo deste estudo foi avaliar o desempenho de novilhas Nelore em pastagem diferida de Urochloa decumbens sob dois períodos de SPE, e realizar análise
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
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9. Breeding goals and economic values for Nellore cattle in a full-cycle production system
ABSTRACT. The objective of this study was to develop a bio-economic model for the estimation of economic values of economically important traits in a full-cycle beef cattle production system. The bio-economic model calculated economic values by simulating the impact of changes in the profit of the system consisting of a 1% increase in each trait of the breed
Acta Sci., Anim. Sci.. Publicado em: 25/02/2019
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10. População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso
ABSTRACT This study aimed to quantify and identify the profile of the rumen protozoa population of beef steers fed with or without roughage. Nellore crossbred steers raised in extensive system on lignified tropical pastures with mineral supplementation and steers confined for 60 days only receiving pelletized concentrate and whole corn kernels were evaluated
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2017-10
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11. ECONOMIC AND FINANCIAL VIABILITY OF DIGESTER USE IN CATTLE CONFINEMENT FOR BEEF
ABSTRACT This research analyzes the economic and financial feasibility of implementing a biodigester for confinement of beef cattle on a farm located in the State of São Paulo, through the approach of discounted cash flow. The anaerobic digestion technology arouses interest, due to its advantages with the generation of electricity and the pollution reductio
Eng. Agríc.. Publicado em: 2017-04
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12. A proposal for the evaluation of the bioeconomic efficiency of beef cattle production systems
ABSTRACT The objective of this study was to identify types of production system and their main indicators on bioeconomic efficiency, using qualitative and quantitative methods to evaluate beef cattle farms in the western region of the state of Rio Grande do Sul. A survey was carried out with 43 farmers operating in the western region of that state. All farms
R. Bras. Zootec.. Publicado em: 2017-01