Farming Systems
Mostrando 25-36 de 183 artigos, teses e dissertações.
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25. Technical efficiency analysis of marine shrimp farming (Litopenaeus vannamei) in biofloc and conventional systems: A case study in northeastern Brazil
Abstract Shrimp farming has a great ecological, economic, and social importance in northeastern Brazil. Although the conventional farming system is widely used, biofloc technology (BFT) system has been developed to reduce environmental impacts and optimizing the production. Thus,the present study evaluated the technical efficiency of production cycles of Lit
An. Acad. Bras. Ciênc.. Publicado em: 03/09/2018
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26. Development of an indirect ELISA assay to evaluation of the adaptive immune response of pacu (Piaractus mesopotamicus)
ABSTRACT The pacu is one of the most important species for Brazilian fish farming and is considered emerging in the global aquaculture. Despite its importance, no effective tool for evaluation of the adaptive immune response of this species has been developed. Therefore, this study aimed the development and standardization of indirect ELISA for the measureme
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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27. THE TYPOLOGY OF BROILER HOUSE AND THE IMPACT IN THE LOCOMOTION OF BROILERS
ABSTRACT The large majority of broiler houses use two types of systems: dark-house system - DHP, and tunnel with curtain system - ATC. The objective of the present study was to evaluate the association and the prevalence of locomotion issues in the broiler commercial farming systems (DHP and ATC). For assessing the thermal environment and the litter quality,
Eng. Agríc.. Publicado em: 2018-06
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28. Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system
ABSTRACT: Ventilation systems used in swine facilities deserve to be studied because they directly affect productivity in the pig farming sector. Bearing this in mind the uniformity of air distribution and temperature is essential to animal welfare in this breeding environment. Thus, the purpose of this study was to identify whether changes in air entrances
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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29. Adaptability and stability of organic-grown arabica coffee production using the modified centroid method
Abstract This study aimed to identify promising arabica coffee genotypes for organic systems. The experiments were arranged in a randomized block design, with 30 genotypes and three replications. The adaptability and stability analysis was carried out using the modified centroid method, considering the mean yield of two biennia (2005/2006 and 2006/2007, 2007
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-12
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30. Effects of crude protein levels on egg quality traits of brown layers raised in two production systems
ABSTRACT The objective of this study was the evaluation of egg quality of 30 to 45-week-old brown layers, raised in cages or on floor, supplemented with amino acids, using the ideal protein concept with levels of 14, 15, 16, and 18% crude protein. A total of 400 birds (Hy-sex Brown) were used, distributed into two breeding systems (conventional cage or floor
R. Bras. Zootec.. Publicado em: 2017-11
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31. Climatic Variation: Effects on Stress Levels, Feed Intake, and Bodyweight of Broilers
ABSTRACT Chickens tolerate a very narrow range of climatic variation, and therefore, it is essential to determine the most suitable climatic area and weather for broiler production in open-house systems. In this study, 3060 broilers were used as experimental birds to investigate the effects of seasonal differences and climatic variations on the growth perfor
Rev. Bras. Cienc. Avic.. Publicado em: 2017-09
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32. Economic Viability of Tomato Cultivation in Organic Farming System
ABSTRACT The aim of the present study is to evaluate the economic viability of tomato cultivation in a system of organic farming, and to compare it with the conventional farming system. The fixed and variable costs of both cultivation systems were calculated, as well as the costs of disease control with the application of alternative products and pesticides.
Braz. arch. biol. technol.. Publicado em: 17/08/2017
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33. Biological Soil Properties in Integrated Crop-Livestock-Forest Systems
ABSTRACT Currently, agricultural productivity and sustainable development are the desired bases for the creation of production systems. Farming for greater production and the efficient use of soil resources are at the core of modern systems. However, the way in which agricultural management and practices can change soil quality has become increasingly import
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
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34. A STUDY OF THE IMPACT OF LAND USE AND OCCUPATION ON BASIN WATER QUALITY THROUGH MULTIVARIATE STATISTICS
ABSTRACT Without effective actions to improve environmental management, water resources tend to become scarce. Thus, this study aimed to understand the processes influencing the physical, chemical, and biological properties of the water due to land uses and occupation in the Ipê stream basin, in Ilha Solteira - SP (Brazil), regarding the dependence of the a
Eng. Agríc.. Publicado em: 2017-06
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35. Seed quality of common bean accessions under organic and conventional farming systems1
RESUMO Qualidade de sementes de acessos de feijão sob sistemas de cultivo orgânico e convencional A agrobiodiversidade é indispensável para a produção de alimentos de forma sustentável, e o conhecimento das características potenciais das sementes de acessos crioulos pode auxiliar na retomada, por parte dos agricultores, do hábito de conservação de
Pesqui. Agropecu. Trop.. Publicado em: 2017-06
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36. AGRONOMICAL ATTRIBUTES OF SOYBEANS AND SOIL RESISTANCE TO PENETRATION IN NO-TILLAGE AND CHISELED SURFACES
ABSTRACT Farming systems may affect soil properties and crop production of components, decreasing yields. This study aimed to assess penetration resistance (PR) and agronomic traits of soybeans under no-tillage (NT) and chiseling (CP). The experiment was carried out in a randomized block with two treatments (tillage and scarification) with 12 repetitions; ye
Eng. Agríc.. Publicado em: 2017-02