Animal Growth Rates
Mostrando 1-12 de 85 artigos, teses e dissertações.
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1. Diagnosis of mycobacteria in bovine milk: an overview
ABSTRACT Tuberculosis remains as the world’s biggest threat. In 2014, human tuberculosis ranked as a major infectious disease by the first time, overcoming HIV death rates. Bovine tuberculosis is a chronic disease of global distribution that affects animals and can be transmitted to humans by the consumption of raw milk, representing a serious public healt
Rev. Inst. Med. trop. S. Paulo. Publicado em: 05/06/2017
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2. Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities
ABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of this study was to evaluate the impact of grazing intensity on
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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3. Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens
ABSTRACT Locomotion problems in broiler chickens can cause economic losses of up to 40% of the total revenues due to carcass condemnation and downgrading at processing. Leg disorders, such as femoral lesions, tibial dyschondroplasia, and spondylolisthesis, substantially impact the welfare of chickens as these disorders can prevent birds from reaching the fee
Rev. Bras. Cienc. Avic.. Publicado em: 2016-12
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4. Energy utilization of light and heavy weaned piglets subjected to different dietary energy levels
ABSTRACT This study was conducted to evaluate the effects of dietary metabolisable energy (ME: 3.25, 3.40, 3.55, or 3.70 Mcal kg−1) and weaning weight (WW: light 4.0±0.7 kg, and heavy: 6.3±0.6 kg) on productive response and energy utilization of weaned piglets. Sixty-four male piglets were housed in 32 metabolic cages (two animals per cage) during the fi
R. Bras. Zootec.. Publicado em: 2016-09
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5. Herbage utilisation efficiency of continuously stocked marandu palisade grass subjected to nitrogen fertilisation
Nitrogen fertiliser accelerates plant growth and increases herbage utilisation efficiency in continuously stocked temperate grass swards, indicating greater herbage production and harvest efficiency. There is no similar evidence, however, for tropical pastures. In this study we evaluated the morphogenetic responses, the patterns of defoliation and the effici
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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6. Body chemical composition, tissue deposition rates and gain composition of young Nellore cattle selected for postweaning weight
Empty body and carcass chemical composition were determined in 67 Nellore bulls from Selection Nellore (NeS) and Control Nellore (NeC) herds of an animal breeding program for growth, slaughtered at 570 days of average age, after 100 days of feedlot. Selection Nellore animals had, respectively, 360 and 430 kg of initial and slaughter body weight, and NeC anim
R. Bras. Zootec.. Publicado em: 2014-04
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7. Dehydration curve, fungi and mycotoxins in Tifton 85 hay dehydrated in the field and in shed
The objective of this study was to estimate the dehydration curve and occurrence of fungi and mycotoxins in Tifton 85 hay. The experimental design was randomized blocks in split plots with four replications and five levels of nitrogen (0, 25, 50, 75 and 100 kg ha-1) in the form of urea, two regrowth ages (28 and 35 days) and drying hay in the sun and in shed
R. Bras. Zootec.. Publicado em: 2013-06
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8. EFEITO DA ASSOCIAÇÃO DO FATOR DE CRESCIMENTO E DIFERENCIAÇÃO 9 (GDF-9) E DO HORMÔNIO FOLÍCULO ESTIMULANTE (FSH) SOBRE O DESENVOLVIMENTO IN VITRO DE FOLÍCULOS PRÉ-ANTRAIS CAPRINOS EM CULTIVO IN SITU DE LONGA DURAÇÃO / EFFECT OF ASSOCIATION AND GROWTH FACTOR DIFFERENTIATION 9 (GDF-9) and hormone FOLLICLE STIMULATING (FSH) DEVELOPMENT OF IN VITRO PREANTRAL FOLLICLES GOATS IN FARMING IN SITU LONG
The aim of this study was to evaluate the effects of growth differentiation factor 9 (GDF-9) and follicle-stimulating hormone (FSH) on the in vitro survival, growth and steroidogenesis of caprine preantral follicles cultured for 16 days. Ovarian fragments were cultured in αMEM+ in the presence or absence of GDF-9 (200 ng/mL) and/or FSH (50 ng/mL) added
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/07/2012
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9. Desenvolvimento de um sistema de recirculação com uso de wetlands construídas para efluentes da piscicultura / Development of a recirculating system using constructed wetlands for aquaculture effluents
Global aquaculture has been growing very fast in recent decades due to several factors, including: population growth, demand for low calorie protein and especially the reduction of natural fish stocks. Brazil has enormous potential to become a world leader in fisheries production in captivity. However, the development of aquaculture in Brazil must be conduct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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10. Uma abordagem neurofisiológica da acetilcolina em plantas de milho hidratadas e sob condições de estresse hídrico / A neurophysiological approach to acetylcholine in maize plants hydrated and under water stress conditions
The occurrence of action potential and neurotransmitters, the major components of animal nervous system, in plants, bacteria and fungi, shows the universality of signaling principles and information transmission in the way of chemical and electrical signals in all organisms. These study topics, along with plant intelligence and vesicular-based auxin transpor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012
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11. Natural and improved pastures on growth and reproductive performance of Hereford heifers
This study evaluated yearling growth and reproductive performance of Hereford heifers at 24-26 months of age grazing on natural pastures at two stocking rates during winter and spring, associated or not to improved natural pastures. Heifers were classified according to three weight groups (Light, Medium and Heavy) and randomly distributed into four feeding m
Revista Brasileira de Zootecnia. Publicado em: 2012-01
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12. Efeito da hepatectomia parcial associada à administração de fatores nutricionais hepatotróficos sobre a morfologia, função e expressão de genes pró-fibróticos na cirrose hepática em ratos Wistar induzida por tiocetamida / Effects of partial hepatectomy associated with administration of nutritional hepatotrophic factors in morphology, function and expression of pro-fibrotic genes in thioacetamide-induced liver cirrhosis in Wistar rats
The current study evaluated the role of parenteral solution of nutritional hepatotrophic factors in animals with cirrhosis undergoing partial hepatectomy. This procedure is fearful in these animals due to the possibility of acute liver failure, since removal of a liver fragment further reduces the functional capacity of an already compromised organ. Moreover
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011