Passion flower hybrids and their use in the ornamental plant market: perspectives for sustainable development with emphasis on Brazil     

Priscilla Patrocínio Abreu  Margarete Magalhães Souza  Eileen Azevedo Santos  Marcel Viana Pires  Mônica Moura Pires  Alex-Alan Furtado de Almeida 《Euphytica》2009,166(3):307-315

The Passiflora L. (Passifloraceae) genus consists of about 500 species widely distributed throughout tropical and subtropical regions, commonly known as the passion flower. The passion flowers are considered ornamental plants because of the exotic beauty of their flowers and variant foliage. Since their introduction to the Old World, around 1625, seventeenth century, they have been used to decorate European glasshouses and gardens. Interspecific hybridization is used to produce single ornamental plants. However in some countries, such as Brazil, being centre of origin of many species, the potential value of these species has hardly been exploited. The beauty of these wild species and their hybrids is little known in Brazil. Therefore it is here intended to highlight the productive and commercial potential of the passion flowers for the purpose to generate an income in family agriculture, while maintaining the ecological balance and optimizing the use of natural resources.  相似文献   

Extracranial meningioma in a dairy cow     

Pires MA  Saraiva AL  Estevinho J  Oliveira J  Pinto ML  Seixas F 《The Veterinary record》2005,157(1):32

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Energy requirements of Texel crossbred lambs   总被引：8，自引：0，他引：8  

Galvani DB  Pires CC  Kozloski GV  Wommer TP 《Journal of animal science》2008,86(12):3480-3490

Two trials were conducted to determine the energy requirements of feedlot Texel crossbred lambs. In a comparative slaughter trial, thirty 11/16 Texel x 5/16 Ile de France crossbred noncastrated male lambs, weaned at 42 d of age (16.2 +/- 2.1 kg of shrunk BW; SBW), were used. Five lambs were randomly chosen and slaughtered after 10 d of experimental management and diet adaptation (baseline group). Fifteen lambs then were fed for ad libitum intake and slaughtered at 25, 30, or 35 kg of SBW. The remaining 10 lambs were randomly assigned to 2 levels of DMI, either 70 or 55% of the ad libitum intake, and were slaughtered concomitantly with lambs of the 35 kg of SBW group. Total body N, fat, and energy contents were determined. In a digestibility trial, 6 Texel x Ile de France crossbred lambs (30.4 +/- 2.6 kg of SBW) were housed in metabolic cages and used in a replicated 3 x 3 Latin square experiment to evaluate the energetic value of the diet at different feed intake levels. Net and ME requirements for maintenance were 58.6 and 91 kcal/kg(0.75) of SBW, respectively. Consequently, partial efficiency of energy use for maintenance was 0.64. Body fat content varied from 72.7 to 125.9 g/kg of empty BW, respectively, for 13.1 and 28.2 kg of empty BW. Net energy requirements for growth of lambs at 15 and 35 kg of SBW at an ADG of 250 g were 424 and 553 kcal/d, respectively. Partial efficiency of energy use for growth was 0.47. Texel x Ile de France crossbred growing lambs used in this study showed decreased nutritional requirements than those reported by most nutritional systems.  相似文献   

Evaluation of days of total collection and use of internal markers in nutritional trials with small ruminants     

Catarine S. C. da Teixeira  Gleidson G. P. de Carvalho  Isis C. M. Nicory  Aracele V. Santos  Douglas S. dos Pina  José E. F. de Júnior  Maria L. G. M. L. de Araújo  Luana M. A. de Rufino  Luís G. A. Cirne  Aureliano J. V. Pires 《Tropical animal health and production》2018,50(4):815-823

Two experiments were conducted to evaluate the number of days required for total fecal collection and the viability of using the indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF), and indigestible acid detergent fiber (iADF) internal markers to determine the fecal excretion of dry matter (FEDM) and digestibility in nutritional trials with small ruminants. Eight sheep in the first experiment and eight goats in the second experiment were distributed into two 4?×?4 Latin square designs. There were no significant differences between days of total fecal collection for FEDM; digestibility of dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), neutral detergent fiber corrected for ash and protein (NDFap), and non-fibrous carbohydrates corrected for ash and protein (NFCap); and total digestible nutrients (TDN) in both species. The results suggest that only 1 day of total collection is sufficient to obtain the FEDM and the digestibility of the nutritional components in sheep and goats. The markers are efficient in determining fecal production and digestibility in these animal species.  相似文献   

Infectivity of seropositive dogs, showing different clinical forms of leishmaniasis, to Lutzomyia longipalpis phlebotomine sand flies     

Michalsky EM  Rocha MF  da Rocha Lima AC  França-Silva JC  Pires MQ  Oliveira FS  Pacheco RS  dos Santos SL  Barata RA  Romanha AJ  Fortes-Dias CL  Dias ES 《Veterinary parasitology》2007,147(1-2):67-76

Visceral leishmaniasis (VL) is a growing zoonosis with an increasing number of new cases and a rapid geographical spreading of the disease. In the present study, a canine survey was carried out in the city of Montes Claros (320,000 inhabitants), an endemic area of American visceral leishmaniasis in the state of Minas Gerais, Brazil. A total number of 4795 dogs were examined by serology, which showed a rate of seropositivity of 5%. Isoenzymatic analysis confirmed Leishmania infantum chagasi as the local aetiological agent of CVL. Canine tissues were assayed for the presence of Leishmania parasite DNA using different techniques. The infectivity of asymptomatic, oligosymptomatic and symptomatic seropositive dogs was tested by xenodiagnosis using laboratory reared Lutzomyia longipalpis. Rates of infection of 5.4%, 5.1% and 28.4% were found for the phlebotomine sand flies that fed in asymptomatic, oligosymptomatic and symptomatic dogs, respectively. Our results indicate that, under experimental conditions, symptomatic dogs are about four times more infective to VL vectors than oligosymptomatic or asymptomatic animals. The lower infectivity rates of dogs displaying any of the last two clinical forms of leishmaniasis, however, must be taken into account in the epidemiology of CVL.  相似文献   

Assessment of clogging effects on lateral hydraulics: proposing a monitoring and detection protocol     

Antonio Pires de Camargo  Bruno Molle  Séverine Tomas  José Antônio Frizzone 《Irrigation Science》2014,32(3):181-191

Ageing of drip irrigation systems due to clogging of emitters is considered the largest maintenance problem in microirrigation and this problem is enhanced in subsurface irrigation systems. Whatever the source of the clogging problem, a methodology for early detection of clogging in the field can be useful in decision-making about deploying cleaning processes (flushing or injection of chemicals) and avoiding replacement of laterals. This work presents a methodology for simulating clogging conditions able to reproduce the effects of clogging on pressure profiles, head loss, and emitters flow rate distribution along a single levelled lateral with constant inlet pressure. This methodology was validated by several experiments conducted under controlled conditions of clogging induced by changes in the flow rate of emitters. The effects of clogging intensity and position on hydraulic parameters of a single lateral were analysed in detail and aspects relating to pressure, head loss, and flow rate measurements were discussed. For a given lateral set-up, it is possible to draw a chart relating flow rate and head loss for various levels and positions of clogging. Assuming that measurements of head loss and flow rate are available, this diagram enables immediate estimation of the level and location of clogging, which is useful for deploying maintenance routines. Finally, a protocol was proposed to detect the level of clogging and estimate its position along a levelled lateral under constant inlet pressure. Although constant lateral inlet pressure is atypical in large agricultural settings, it may occur in greenhouse or experimental settings.  相似文献   

Effects of fluazuron (2.5 mg/kg) and a combination of fluazuron (3.0 mg/kg) + abamectin (0.5 mg/kg) on the reproductive parameters of a field population of Rhipicephalus (Boophilus) microplus on experimentally infested cattle     

Breno Cayeiro Cruz  Weslen Fabricio Pires TeixeiraWillian Giquelin Maciel  Gustavo FelippelliFlávia Carolina Fávero  André Cayeiro CruzCarolina Buzzulini  Vando Edésio SoaresLucas Vinicius Costa Gomes  Welber Daniel Zanetti LopesGilson Pereira de Oliveira  Alvimar José da Costa 《Research in veterinary science》2014

The current study assessed the deleterious effects of two formulations of fluazuron (2.5 mg/kg fluazuron and a combination of 3.0 mg/kg fluazuron + 0.5 mg/kg abamectin) on the reproductive parameters of engorged Rhipicephalus (Boophilus) microplus females that naturally detached from experimentally infested cattle in two experiments. Based on the obtained results, it can be concluded that fluazuron (2.5 mg/kg) showed deleterious effects only on the hatchability percentage in the period of 2–7 post-treatment days of this ectoparasite's engorged females. On the other hand, the fluazuron (3.0 mg/kg) + abamectin (0.5 mg/kg) combination presented harmful effects over reproductive parameters of this tick species. Further studies should be performed with a known tick population (reference susceptible strain) to determine the effect of these formulations on the reproductive parameters and to elucidate if this field population is fluazuron resistant.  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   

Effect of reproductive methods and GnRH administration on long-term protocol in Santa Ines ewes     

Biehl  Marcos V  Ferraz Junior  Marcos V C  Ferreira  Evandro M  Polizel  Daniel M  Miszura  Alexandre A  Barroso  José P R  Oliveira  Gabriela B  Bertoloni  Analisa V  Pires  Alexandre V 《Tropical animal health and production》2017,49(6):1303-1308

This study aimed to determine whether reproductive performance of ewes submitted to laparoscopic timed artificial insemination (TAI) would be similar to ante meridiem (AM)/post meridiem (PM) rule and assisted natural mating (NM), and whether GnRH may enhance the pregnancy rate in TAI. In experiment I, 191 non-lactating ewes were synchronized, then TAI was performed either 48 h after progesterone (P4) removal (TAI-48 h) or 12 h after estrus detection (AM/PM); moreover, some ewes were submitted to NM (NM) as control treatment. In experiment II, 247 non-lactating ewes were allocated in five treatments, a control (no-GnRH on protocol) and four treatments arranged in a factorial design 2 × 2. The factors were time and dose of GnRH: ewes that received either 10 μg (TAI-10 μg-36 h) or 25 μg of GnRH (TAI-25 μg-36 h) 36 h after P4 removal and ewes that received either 10 μg (TAI-10 μg-48 h) or 25 μg of GnRH (TAI-25 μg-48 h) at time of insemination, 48 h after P4 removal. In experiment I, pregnancy rate in TAI-48 h was lower (P = 0.03) than AM/PM and NM. Moreover, the probability of pregnancy in TAI-48 h was higher (P = 0.06) in ewes detected in estrus early. In experiment II, the use of GnRH in TAI protocols increased (P < 0.01) pregnancy rate at synchronization, and TAI-25 μ-48 h and TAI-10 μg-36 h treatments increased (P = 0.02) pregnancy rate compered to TAI-10 μg-48 h. We conclude that TAI decreased pregnancy rate compered to NM and AM/PM, which may be improved by GnRH use in TAI to synchronize ovulation.

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