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Desempenho produtivo e reações fisiológicas de ovinos deslanados em sistema silvipastoril. Infoteca-e
MAGALHAES, J. A.; COSTA, N. de L.; PEREIRA, R. G. de A.; TOWNSEND, C. R.; TAVARES, A. C..
Procurou-se avaliar os parametros fisiologicos, determinar tolerancia ao calor e peformance produtiva de ovinos deslanados mantidos sob seringal cultivado. Conclui-se que: Os ovinos deslanados foram tolerantes as condicoes climaticas do verao do tropico umido e o sombreamento propiciado pela seringueira amenizou acentuadamente os efeitos depressivos de estresse termico; Apesar do sombreamento ter reduzido significativamente a disponibilidade de forragem, os ovinos deslanados apresentaram desempenho produtivo satisfatorios em relacao aqueles a sombra.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Ovino deslanado; Sistema silvipastoril; Rubber tree; Embrapa Rondônia; Porto Velho (RO); Rondônia; Amazônia Ocidental; Western Amazon.; Campo Experimental.; Resistência; Calor; Seringueira; Shearing (defleecing); Silvopastoral systems; Heat tolerance; Animal performance.; Sheep.
Ano: 1996 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/699909
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Dietary vegetable oils inclusion on the performance, hormonal levels and hsp 70 gene expression in broilers under heat stress Animal Sciences
Tari, Ali Rafiei; Sadeghi, Ali Asghar; Mousavi, Seyed Naser.
The aim of the present study was to compare the effects of unsaturated and saturated oils on the performance, hormonal levels and hsp gene expression in broiler chickens exposed to heat stress. 300 one-day male broiler chicks were assigned to 4 treatments (Diets containing palm, corn, linseed or olive oils) with 5 replicates. At day 28 of age, 2 chickens were removed from each replicate, then blood samples and liver tissue samples were collected for analyses. Feeding linseed and olive oil reduced feed conversion ratio compared to corn and palm oils. The lowest level of insulin was for chickens fed linseed oil and corn oil. The highest level of corticosterone was found in chickens fed palm oil and the lowest level was for those received linseed oil....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corticosterone; Insulin; Heat shock protein; Heat tolerance.
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/45517
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Elevated temperature-humidity index induces physiological, blood and milk alterations in Holstein cows in a more pronounced manner than in ½ and ¾ Holstein × Gir. Repositório Alice
STUMPF, M. T.; KOLLING, G. J.; FISCHER, V.; DALTRO, D. dos S.; ALFONZO, E. P. M.; DALCIN, V. C.; DIAS, L. T.; SILVA, M. V. G. B.; PERIPOLLI, V.; MCMANUS, C. M..
Bos taurus taurus and Bos taurus indicus cattle subspecies present different capabilities in coping with situations of elevated temperatures, the latter being more tolerant to heat stress. Thus, some breeding programs crossed these subspecies to produce a high producing yet heat-tolerant breed (Girolando). Nineteen Holstein (H100) and 19 Girolando cows [(½ Holstein × Gir (H50) and ¾ Holstein × Gir (H75)] with similar milk production were used in a six-day experiment to evaluate the consequences of heat stress due to shade deprivation on their physiological, blood and milk traits. Cows were exposed to a non-shaded environment between morning (06:00h; GMT -3:00) and evening milking (14:30h; GMT -3:00) with access to water ad libitum. Procedures were...
Tipo: Artigo de periódico Palavras-chave: Blood alterations; Alteração sanguínea; Tolerância ao calor; Gado Leiteiro; Produção Leiteira; Fisiologia; Dairy cattle; Heat tolerance; Milk yield; Physiology.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136549
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Environmental interaction, additive and non-additive genetic variability is involved in the expression of tissue and whole-plant heat tolerance in upland cotton (Gossypium hirsutum. L) Genet. Mol. Biol.
Hafeez-ur-Rahman,.
Heat tolerance is measured at tissue level by cellular membrane thermostability (CMT) and at the whole plant level by the heat tolerance index (HTI). Eight upland cotton cultivars and 15 crosses were used to determine the type and extent of genetic variability associated with the expression of these traits between and within environments. Heat stress and non-stress conditions were used as the CMT environments and years for HTI. The wide variation in heterotic expression and combining ability effects observed for CMT and HTI suggest multigenic inheritance of these traits. Significant genetic variability across environments was evident but the traits were not highly heritable because of substantial environmental interaction. The available genetic variability...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cotton; Environmental interaction; Genetic variability; Heat tolerance; Membrane stability.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300022
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Genetics and breeding of sheep in Brazil. Repositório Alice
MCMANUS, C.; PAIVA, S. R.; ARAÚJO, R. O. de.
Tipo: Separatas Palavras-chave: Tolerância ao calor; Breed; Molecular marker; Doença animal; Marcador molecular; Raça; Ovis Aries; Heat tolerance.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/880235
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Genetics and breeding of sheep in Brazil R. Bras. Zootec.
McManus,Concepta; Paiva,Samuel Rezende; Araújo,Ronyere Olegário de.
Studies in genetics and breeding of sheep in Brazil have increased significantly in recent years. These involve research in characterization, breeding and crossing sheep using new technologies available incorporating both classical quantitative and molecular genetics. Improvements in statistical techniques, computational resources as well as analysis of DNA and gaps in present knowledge and opportunities for possible research are pointed out. There is a need for greater interaction between various groups working in the country as well as interactions with other disciplines such as Geographical Information Systems, Statistics, Bioinformatics, as well as biological studies such as physiology and proteomics.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breed; Disease; Heat tolerance; History; Molecular markers; Ovis aries.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300026
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Selection of arabica coffee progenies tolerant to heat stress Ciência Rural
Teixeira,Alexsandro Lara; Souza,Flávio de França; Pereira,Antonio Alves; Oliveira,Antonio Carlos Baião de; Rocha,Rodrigo Barros.
Due to high temperatures, practically all coffee farms in the state of Rondonia are of the C. canephora species. Thus, importing arabica coffee from other states becomes necessary for composition of blends, as well as for the specialty or gourmet coffee market. The purpose of this study was to select arabica coffee genotypes that exhibit satisfactory agronomic performance under high temperature conditions. The experiment was conducted in OuroPreto do Oeste, RO, Brazil, with mean annual temperature of 25.8°C and mean annual rainfall of 2300mm year-1. The experiment was composed of 114 arabica coffee genotypes, with 103 progenies and eleven control cultivars, provided by EPAMIG. A randomized block experimental design was used with three replications, spacing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea Arabica L.; High temperatures; Heat tolerance; Maturation cycle.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701228
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Semi-lethal high temperature and heat tolerance of eight Camellia species Phyton
He,XY; Ye,H; Ma,JL; Zhang,RQ; Chen,GC; Xia,YY.
Annual leaf segments of eight Camellia species were used to study the heat tolerance by an electrical conductivity method, in combination with a Logistic equation to ascertain the semi-lethal high temperature by fitting the cell injury rate curve. Te relationship between the processing temperature and the cell injury rate in Camellia showed a typical "S" shaped curve, following the Logistic model. Te correlation coeficient was above 0.95. Te semi-lethal high temperature LT50 of the eight Camellia species, determined by the infection point on the curve, varied from 50 to 57 LT50 / °C, following the descending order: Camellia oleifera > C. japonica > C. polyodonta > C. semiserrata > C. nitidissima > C. gigantocarpa > C. nanyongensis > C....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Camellia; Logistic equation; Semi-lethal high temperatures; Heat tolerance.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572012000200007
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Study on environmental indices and heat tolerance tests in hair sheep. Repositório Alice
SEIXAS, L.; MELO, C. B. de; MENEZES, A. M.; RAMOS, A. F.; PALUDO, G. R.; PERIPOLLI, V.; TANURE, C. B.; COSTA JUNIOR, J. B. G.; MCMANUS, C..
Tipo: Separatas Palavras-chave: Adaptability; Iberia index; Temperature-humidity index; Small ruminant; Heat tolerance.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1070646
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Tolerance to abiotic factors of microsclerotia and mycelial pellets from Metarhizium robertsii, and molecular and ultrastructural changes during microsclerotial differentiation. Repositório Alice
PAIXÃO, F. R. S. da; HUARTE BONNET, C.; RIBEIRO-SILVA, C. de S.; MASCARIN, G. M.; FERNANDES, E. K. K.; PEDRINI, N..
Abstract: Metarhizium species fungi are able to produce resistant structures termed microsclerotia, formed by compact and melanized threads of hyphae. These propagules are tolerant to desiccation and produce infective conidia; thus, they are promising candidates to use in biological control programs. In this study, we investigated the tolerance to both ultraviolet B (UV-B) radiation and heat of microsclerotia of Metarhizium robertsii strain ARSEF 2575. We also adapted the liquid medium and culture conditions to obtain mycelial pellets from the same isolate in order to compare these characteristics between both types of propagules. We followed the peroxisome biogenesis and studied the oxidative stress during differentiation from conidia to microsclerotia by...
Tipo: Artigo de periódico Palavras-chave: UV-B radiation; Thermotolerance; Tolerância; Fungo Entomógeno; Fungo Para Controle Biológico; Radiação Solar; Raio Ultravioleta; Controle Biológico; Metarhizium robertsii; Entomopathogenic fungi; Ultraviolet radiation; Heat tolerance; Oxidative stress; Biological control; Gene expression.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1138387
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Tolerância ao calor de caprinos e ovinos sem-lã em Sobral. Repositório Alice
ARRUDA, F. de A. V.; PANT, K. P..
Resumo: Caprinos das raças Canindé, Anglo-Nubiana e Bhuj e avinos sem-la Morada Nova e Santa Inês foram comparados quanta às temperaturas retais e taxa respiratoria, antes e imediatamente apos o exercício e durante o período de uma hora de repouso apos o0 exercicio, para avaliaçao da tolerância ao calor ambiental. Resultados mostraram que a temperatura retal inicial nao foi diferente entre as cinco raças; apos exercicio, elevou de 1,25ºC até 1,95ºC nas diferentes raças; nao houve diferença da elevaçao da temperatura corporal entre espécies. Apos exercício, a recuperaçao foi rapida nos caprinos Bhuj e Canindé. A recuperaçao foi mais lenta na Anglo-Nubiana e nos avinos. A variaçao inicial no ritmo respiratorio apresentou-se elevada na Anglo-Nubiana em...
Tipo: Artigo de periódico Palavras-chave: Temperatura retal; Taxa respiratoria; Brasil; Nordeste; Northeast; Rectal temperature; Respiration rate; Temperature resistance; Caprino; Ovino; Bioclimatologia; Calor; Resistência a temperatura; Aclimatação; Goats; Sheep; Bioclimatology; Heat tolerance; Brazil.
Ano: 1984 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/514205
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Tolerância ao florescimento precoce e características comerciais de progênies F4 de alface do cruzamento Regina 71 x Salinas 88 - DOI: 10.4025/actasciagron.v31i1.6607 Agronomy
Carvalho Filho, José Luiz Sandes de; UFLA; Gomes, Luiz Antonio Augusto; UFLA; Maluf, Wilson Roberto; UFLA.
A alface é uma espécie cujas plantas possuem grande variabilidade no que diz respeito à forma, cor e textura das folhas, caracterizando diferentes tipos comerciais. O grupo folhas lisas ainda se mantém como um dos mais consumidos. A caracterização do tipo de folha é essencial no desenvolvimento de um programa de melhoramento, principalmente, quando a população segregante é oriunda de parentais contrastantes para o caráter. Além disso, a maior parte das cultivares utilizada é sensível ao calor, emitindo a haste floral precocemente. Assim, o objetivo deste trabalho foi avaliar características comercias de progênies F4 de alface e a sua tolerância ao calor, visando obter cultivares com folha lisa tolerantes ao florescimento precoce, resistentes aos nematóides...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Lactuca sativa L.; Tolerância ao calor; Folhas lisas. Lactuta sativa L.; Heat tolerance; Butterhead.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6607
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Tolerância de bovídeos à temperatura e umidade do trópico úmido. Infoteca-e
MAGALHÃES, J. A.; TAKIGAWA, R. M.; TAVARES, A. C.; TOWNSEND, C. R.; COSTA, N. de L.; PEREIRA, R. G. de A..
Avaliação dos efeitos do clima sobre a temperatura retal e frequência respiratória, além de determinar o índice de tolerância ao calor (Índice de Benezra) de bovídeos, durante a estação seca do trópico úmido.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Resistência ao calor; Temperatura retal; Rectal temperature; Frequência respiratória; Trópico Úmido; Embrapa Rondônia; Porto Velho (RO); Rondônia; Western Amazon.; Amazônia Ocidental; Bovídeo; Resistência a Temperatura; Umidade.; Bovidae; Heat tolerance; Respiratory rate.; Humid tropics; Humidity.
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/704099
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Transcriptome responses to heat- and cold-stress in ladybirds (Cryptolaemus montrouzieri Mulasnt) analyzed by deep-sequencing Biol. Res.
Zhang,Yuhong; Wu,Hongsheng; Xie,Jiaqin; Jiang,Ruixin; Deng,Congshuang; Pang,Hong.
BACKGROUND: Changed temperature not only threaten agricultural production, but they also affect individual biological behavior, population and community of many insects, and consequently reduce the stability of our ecosystem. Insect's ability to respond to temperature stress evolved through a complex adaptive process, thus resulting in varied temperature tolerance among different insects. Both high and low extreme temperatures are detrimental to insect development since they constitute an important abiotic stress capable of inducing abnormal biological responses. Many studies on heat or cold tolerance of ladybirds have focused on measurements of physiological and biochemical indexes such as supercooling point, higher/lower lethal temperatures, survival...
Tipo: Journal article Palavras-chave: Coccinellidae; Heat tolerance; Cold tolerance; Digital gene expression.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100066
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Yeld maturation, and beverage quality of arabica coffee progenies under selection in Rondonia state, Brazil. Repositório Alice
TEIXEIRA, A. L.; SOUZA, F. de F.; MEDINA FILHO, H. P.; BORDIGNON, R.; RAMALHO, A. R.; ROCHA, R. B..
In this paper, we studied coffee bean yield, maturation, and other characteristics of special progenies of Arabica coffee (Coffea arabica L.) grown under high temperatures in a low altitude region in the state of Rondonia, Brazil. We evaluated 29 progenies developed by the Instituto Agronômico de Campinas ? IAC, namely, 24 F2BC2 progenies of Obatã (C. arabica with introgressions of C. canephora) x (C. eugenioides 4n x C. arabica), three F3 progenies of Catuaí x Glaucia, and two H419 lines. Seven cultivars were used as controls. A randomized block design was used with three replications, spacing of 3.0 × 1.0 m, and ten plants per plot. All the crop seasons showed a significant difference for the hulled coffee yield trait. In combined analysis, significant...
Tipo: Artigo de periódico Palavras-chave: Coffee arabica; Melhoramento de plantas; Café arábica; Tolerância ao calor; Heat tolerance; Plant breeding.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1006847
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Yield maturation, and beverage quality of arabica coffee progenies under selection in Rondonia state, Brazil. Repositório Alice
TEIXEIRA, A. L.; SOUZA, F. de F.; MEDINA FILHO, H. P.; BORDIGNON, R.; RAMALHO, A. R.; ROCHA, R. B..
In this paper, we studied coffee bean yield, maturation, and other characteristics of special progenies of Arabica coffee (Coffea arabica L.) grown under high temperatures in a low altitude region in the state of Rondonia, Brazil. We evaluated 29 progenies developed by the Instituto Agronômico de Campinas ? IAC, namely, 24 F2BC2 progenies of Obatã (C. arabica with introgressions of C. canephora) x (C. eugenioides 4n x C. arabica), three F3 progenies of Catuaí x Glaucia, and two H419 lines. Seven cultivars were used as controls. A randomized block design was used with three replications, spacing of 3.0 × 1.0 m, and ten plants per plot. All the crop seasons showed a significant difference for the hulled coffee yield trait. In combined analysis, significant...
Tipo: Artigo de periódico Palavras-chave: Coffee arabica; Melhoramento de plantas; Café arábica; Tolerância ao calor; Café; Heat tolerance; Plant breeding.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1090698
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การคัดเลือกสายพันธุ์ข้าวกลายพันธุ์หอมนิลจากโครงการ TILLING ให้ทนทานต่อสภาพอุณหภูมิสูงในระยะเจริญพันธุ์ ภายใต้อุโมงค์จำลองสภาวะโลกร้อน Thai Agricultural
Nat Panichawong; Sulaiman Je-arbu; Boonthong Wasuri; Thiwa Phakoktoom; Phoonphipob Kasemsub; Apichart Vanavichit; Chanate Malumpong.
High temperatures during reproductive stages causes male sterility and fertilization failures resulting in yield decreasing dramatically. The purpose of this study was selecting rice mutant lines that tolerant to high temperatures during reproductive stages. The simulation tunnel for global warming condition was controlled gradually increasing temperature from the real environment temperature (25-30 degrees Celsius) in the morning to 40 to 45 degrees Celsius at 10 am and remain this condition for 6 hours and then the system in the tunnel was decreased the temperature to equal outside temperature at night time. For the fast screening of Hom nin mutant1,500 lines found that the mutants lines showed both tolerance and non-tolerance for high temperature...
Tipo: Collection Palavras-chave: Rice; Selection; High temperature; Heat tolerance; ข้าว; การคัดเลือก; อุณหภูมิสูง; การทนต่อร้อน; พันธุ์กลาย; พันธุ์หอมนิล.
Ano: 2012 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5375
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การประมาณค่าพารามิเตอร์ทางพันธุกรรมเพื่อคัดเลือกโคนมที่มีพันธุกรรมของการทนร้อนโดยใช้โมเดลวันทดสอบรีเกรชชั่นสุ่มร่วมกับอิทธิพลแบบข่มของยีน: รายงานการวิจัยฉบับสมบูรณ์ Thai Agricultural
Wuttigrai Boonkum; Monchai Duangjinda.
Tipo: PhysicalObject Palavras-chave: Dairy cattle; Heat tolerance; Genetic parameters; Dominance gene effect; Random regression test day model; โคนม; การทนทานต่อความร้อน; การคัดเลือกพันธุ์; โมเดลวันทดสอบรีเกรชชั่นสุ่ม; อิทธิพลแบบข่มของยีน.
Ano: 2008 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5407
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การหาเครื่องหมายพันธุกรรมที่เกี่ยวข้องกับความสมบูรณ์พันธุ์ในโคนมภายใต้สภาพร้อนชื้น: รายงานการวิจัยฉบับสมบูรณ์ Thai Agricultural
Monchai Duangjinda; Suporn Katawatin; Yupin Phasuk; Tawin Wongpalub.
Tipo: PhysicalObject Palavras-chave: Dairy cattle; Hot stress; Humid condition; Genetic marker; Animal breeding; Dna; Microsatellites; Allele; Heat tolerance; Fertility; โคนม; ภูมิอากาศ; ความร้อน; ความชื้น; ความเครียด; การทนความร้อน; การปรับปรุงพันธุ์สัตว์; เครื่องหมายพันธุกรรม; ดีเอ็นเอ; ความทนทานต่อความเครียด; ไมโครแซทเทิลไลท์; อัลลีล; ความสมบูรณ์พันธุ์; การผลิตน้ำนม.
Ano: 2009 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5717
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