Biochemical basis of alphamethrin resistance in different life stages of Anopheles stephensi strains of Bangalore,India          下载免费PDF全文

Thiruvaipati PN Hariprasad  Nadikere J Shetty 《Pest management science》2016,72(9):1689-1701

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Enrichment planting as a silvicultural option in the eastern Amazon: Case study of Fazenda Cauaxi     

K. Keefe  M.D. Schulze  C. Pinheiro  J.C. Zweede  D. Zarin 《Forest Ecology and Management》2009

Liana-dominated forest patches constitute 15–20% of old-growth forests in the Eastern Amazon but are generally excluded from management for timber production. Here we ask if liana-dominated patches may be brought into production by clearing lianas and conducting enrichment planting (EP) of native timber species. We present growth results from 8 years of such EP trials. Rapid growth and low mortality of all species in this study suggest that EP in cleared liana patches can contribute to timber stocks in second and third harvests of managed forests. The most vigorous individuals of Parkiagigantocarpa and Schizolobium amazonicum in each enrichment site grew more than 1 cm diameter per year (rates were initially >2 cm yr⁻¹), and attained dominant canopy positions and diameters equal to those of small canopy trees in the surrounding forest within 8 years of planting (mean dbh ∼18 cm and ∼20 cm, respectively, at year 8). Limited data on Ceiba pentandra plantings indicate a similar trajectory for this species (dbh ∼40 cm in 8 years). The most vigorous Swietenia macrophylla grew at least 1 cm per year in enrichment plots (mean dbh ∼10 cm in 8 years), but take longer to attain dominant positions. Tabebuia serratifolia may take much longer to reach the canopy than other species tested (rates <1 m yr⁻¹). We attribute the excellent performance to light availability; planting in intact soil with minimal compaction and abundant organic material; and low competition rates maintained by periodic thinning of competing vegetation.  相似文献   

Effects of dietary inclusion of yerba mate (Ilex paraguariensis) extract on lamb muscle metabolomics and physicochemical properties in meat     

Richard R Lobo  Banny S B Correia  Yuli A Pea-Bermúdez  Rafaela Vincenzi  Caroline M da Silva  Leticia L Panosso  Caroline Ceribeli  Luiz A Colnago  Daniel R Cardoso  Alexandre Berndt  Rafael S B Pinheiro  Ives C da S Bueno  Antonio P Faciola 《Journal of animal science》2021,99(9)

This study aimed to evaluate the effect of dietary yerba mate (Ilex paraguariensis) extract (YME) on muscle metabolomics and physicochemical properties of lamb meat. Thirty-six uncastrated male lambs (90 d old) were fed experimental diets, which treatments consisted of 0%, 1%, 2%, and 4% inclusion of YME. Animals were fed for 50 d before slaughter. Muscle and meat samples were collected for metabolomics and meat quality analysis, respectively. The experiment was carried out in a randomized block design and analyzed using orthogonal contrasts. There was a quadratic effect of YME inclusion in tenderness (P < 0.05) and a positive linear effect on meat lightness (P < 0.05). No qualitative changes (P > 0.05) on individual metabolites were observed; however, changes in the quantitative metabolic profile were observed, showing that animals fed 1% and 2% of YME have a greater concentration of desirable endogenous muscle antioxidants, with direct impact on metabolic pathways related to beta-alanine metabolism and glutathione metabolism. Therefore, YME dietary supplementation up to 2% of the diet to lambs had little to no effects on the majority of meat quality traits evaluated; moreover, 4% of YME inclusion negatively affected feed intake and meat quality traits.  相似文献   

Renal biochemistry variables and ultrasonographic imaging in healthy Squirrel monkeys (Saimiri collinsi)          下载免费PDF全文

Fernanda Luiza de Miranda Lins e Lins  Pedro Mayor  Ednaldo Silva Filho  Aline Amaral Imbeloni  Wellington Bandeira da Silva  Maria Vivina Barros Monteiro  Diana Célia Sousa Nunes‐Pinheiro  Frederico Ozanan Barros Monteiro 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2017,46(1):126-131

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Comparison of the surface properties of reused brazilwood (Caesalpinia echinata) and imbuia (Ocotea porosa) to peach palm (Bactris gasipaes) plantation-wood     

A. P. P. Pinheiro  M. H. P. Maurício 《Wood material science & engineering》2017,12(5):295-300

This work deals with characterization of the wear behavior of woods obtained from agribusiness waste and from post-consume items. The main goal on this research is to generate data that could contribute to highlight the engineering performance of endangered wood species, and enhance reintroduction of these species to natural environment. Post-consume samples from Brazilwood (Caesalpinia echinata) and imbuia (Ocotea porosa), and also from the pseudo-stem of peach palm (Bactris gasipaes) were tested and their abrasion behavior was characterized both mechanically and morphologically. The results obtained showed that the wear rate of the tested materials was dependent of their density, and that the pseudo-wood obtained from peach palm has a performance similar to that of several commonly used woods.  相似文献   

13,14‐Dihydro‐15‐Keto Prostaglandin F2α Release in Response to Oxytocin Challenge Early Post‐Partum in Anoestrous Nelore Cows Submitted to Temporary Calf Removal and Progesterone Priming     

RA Satrapa  VG Pinheiro  RL Ereno  CMB Membrive  M Piagentini  M Binelli  CM Barros 《Reproduction in domestic animals》2010,45(5):881-887

The study evaluated, in early post‐partum anoestrous Nelore cows, if the increase in plasma oestradiol (E2) concentrations in the pre‐ovulatory period and/or progesterone priming (P4 priming) preceding ovulation, induced by hormonal treatment, reduces the endogenous release of prostaglandin PGF₂αand prevents premature lysis of the corpus luteum (CL). Nelore cows were subjected to temporary calf removal for 48 h and divided into two groups: GPE/eCG group (n = 10) and GPG/eCG group (n = 10). Animals of the GPE/eCG group were treated with a GnRH agonist. Seven days later, they received 400 IU of eCG, immediately after PGF₂α treatment, and on day 0, 1.0 mg of oestradiol benzoate (EB). Cows of the GPG/eCG group were similarly treated as those of the GPE/eCG group, except that EB was replaced with a second dose of GnRH. All animals were challenged with oxytocin (OT) 9, 12, 15 and 18 days after EB or GnRH administration and blood samples were collected before and 30 min after OT. Irrespective of the treatments, a decline in P4 concentration on day 18 was observed for cows without P4 priming. However, animals exposed to P4 priming, treated with EB maintained high P4 concentrations (8.8 ± 1.2 ng/ml), whereas there was a decline in P4 on day 18 (2.1 ± 1.0 ng/ml) for cows that received GnRH to induce ovulation (p < 0.01). Production of 13,14‐dihydro‐15‐keto prostaglandin F₂α (PGFM) in response to OT increased between days 9 and 18 (p < 0.01), and this increase tended to be more evident in animals not exposed to P4 priming (p < 0.06). In conclusion, the increase in E2 during the pre‐ovulatory period was not effective in inhibiting PGFM release, which was lower in P4‐primed than in non‐primed animals. Treatment with EB promoted the maintenance of elevated P4 concentrations 18 days after ovulation in P4‐primed animals, indicating a possible beneficial effect of hormone protocols containing EB in animals with P4 priming.  相似文献   

Agalactica, reproductive problems and neonatal mortality in horses associated with the ingestion of Claviceps purpurea   总被引：1，自引：0，他引：1  

F. RIET-CORREA  MC MENDEZ  AL SCHILD  PN BERGAMO  W. N. FLORES 《Australian veterinary journal》1988,65(6):192-193

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Genetic diversity and path analysis for nitrogen use efficiency in popcorn inbred lines     

Gabriel Borges Mundim  José Marcelo Soriano Viana  Ciro Maia  Geísa Pinheiro Paes  Rodrigo Oliveira DeLima 《Euphytica》2013,191(2):291-299

Popcorn inbred lines with more efficient nitrogen use are better able to uptake nitrogen from the soil and convert it into higher grain yield, resulting in lower environmental and economic impacts caused by nitrogen fertilization. The objectives of this study were to (i) identify inbred lines superior in nitrogen use (ii) assess the genetic diversity between popcorn inbred lines under high and low N conditions and (iii) investigate the causal effects of several traits in nitrogen use efficiency (NUE). We evaluated 25 popcorn inbred lines under high and low N, and several traits related to NUE and its components were measured. Efficient and inefficient inbred lines under both N levels were identified and can be useful for generating a segregating population for quantitative trait loci mapping. The genetic diversity assessment based on phenotypic traits grouped the inbred lines into four clusters under both N levels, and the efficient inbred lines were grouped together, as were the inefficient lines. The most divergent inbred lines under high N were classified as efficient and intermediate and can be useful to generate a divergent breeding population with a high frequency of favorable genes for NUE. Nitrogen uptake efficiency (NUpE) was considered the most important trait for NUE. To improve the accuracy of selection for NUE, a selection index involving the total root length (TRL), daily growth and NUpE traits under both N levels is recommended, as these traits had high correlations with and direct effects on NUE.  相似文献   

Dynamics of degradation of high-quality tropical forage according to levels of nitrogen supplementation     

Pinheiro  Jessyca Karen  Ferreira  Raimundo Ribeiro  Gonzaga Neto  Severino  Signoretti  Ricardo Dias  Henriques  Lara Toledo  de Oliveira  Juliana Silva 《Tropical animal health and production》2020,52(3):1309-1314

Tropical Animal Health and Production - The present study aimed to evaluate the degradation dynamics of high-quality tropical forage according to the levels of nitrogen supplementation. In this...  相似文献   

Genetic diversity in accessions of lima bean (Phaseolus lunatus L.) determined from agro-morphological descriptors and SSR markers for use in breeding programs in Brazil     

de Jesús Pires  Carolline  Costa  Marcones Ferreira  Zucchi  Maria Imaculada  Ferreira-Gomes  Regina Lucia  Pinheiro  José Baldin  Viana  João Paulo Gomes  Bajay  Miklos Maximiliano  Assunção-Filho  José Ribamar  de Almeida Lopes  Ângela Celis 《Genetic Resources and Crop Evolution》2022,69(3):973-986

Genetic Resources and Crop Evolution - Lima bean (Phaseolus lunatus L.) have high genetic diversity, especially in Brazil, which has been maintained both on farms and in germplasm banks. Knowledge...  相似文献