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Adaptive parameters and thermal comfort of postpartum ewes fed on concentrate supplementation in grazing system Animal Sciences
Rocha, Ronne-von Ribeiro da; Universidade Federal do Piauí; Oliveira, Petrônio Batista de; Universidade Federal do Piauí; Nunes, Amaury Guimarães; Universidade Federal do Piauí; Silva, Tairon Pannunzio Dias e; Universidade de São Paulo; Pereira, Alécio Matos; Universidade Federal do Piauí; Torreão, Jacira Neves da Costa; Colégio Técnico de Bom Jesus.
Current analysis evaluated adaptive parameters and thermal comfort of postpartum ewes fed on concentrate supplementation in grazing system. Thirty lactating pluriparous sheep, 16 Santa Inês (SI) and 14 Morada Nova (MN) were used. Physiological parameters such as respiratory rate (RR), heart rate (HR) and rectal temperature (RT) were measured, in that order, with the animals at rest in the morning (6:00-7:00 am) and in the afternoon (1:00-2:00 pm), respectively, every seven days, with 10 samples. A significant effect (p < 0.05) for RR and HR was reported in the strain. Similar behavior was reported for RR between the breeds where MN sheep had high adaptability. Supplementation levels of 0.5 and 1.5% influenced (p < 0.05) RR which was stronger...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental factors; Heat stress; Nutrition; Thermoregulation.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22823
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Additional feeding during late gestation improves initial litter weight of lactating sows exposed to high ambient temperature R. Bras. Zootec.
Choi,Yo Han; Hosseindoust,Abdolreza; Kim,Min Ju; Kim,Kwang Yeol; Lee,Jun Hyung; Kim,Young Hwa; Kim,Jin Soo; Chae,Byung Jo.
ABSTRACT The present study investigated the impacts of additional feeding (AF; containing 16% excess feed than control diet in the last two weeks of gestation) during late gestation period and different backfat thickness (BFT) including low (<20 mm) and high (≥20 mm) backfat on reproductive performance, litter size, blood metabolites, hormonal profiles, colostrum, and milk composition of sows from day 90 of gestation to farrowing, and from farrowing to weaning during summer (average 28.3 °C). Fifty-four crossbred sows (Yorkshire × Landrace) were allotted to one of four treatments according to a 2×2 factorial arrangement. There was no AF×BFT interaction for any of the measured variables. The body weight change of sows was decreased for <20 mm in BFT...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Backfat thickness; Gestating sows; Heat stress; Reproductive traits.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100522
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Artemisia Annua as Phytogenic Feed Additive in the Diet of Broilers (14-35 Days) Reared under Heat Stress (32 ºC) Rev. Bras. Ciênc. Avic.
Saracila,M; Criste,RD; Panaite,TD; Vlaicu,PA; Tabuc,C; Turcu,RP; Olteanu,M.
ABSTRACT The 21 days feeding trial was conducted on 90, Cobb 500 broilers (aged 14 days), assigned to 3 groups (C, E1 and E2) housed in an experimental hall at 32° C constant temperature and 23 h light regimen. During the growth period (14-35 days), the conventional diet (C) had corn and soybean meal as basic ingredients. Unlike the conventional diet formulation (C), the diet formulations for the experimental groups also included 0.005% Artemisia annua oil (E1) and 0.005% Artemisia annua oil plus 1% Artemisia annua powder (E2). Six broilers per group were slaughtered at 35 days of age in order to measure the weight of the carcass and internal organs of broilers, and samples of intestinal and caecal content were collected for bacteriological assessment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemisia annua; Broiler chickens; Growth performance; Gut microbiota; Heat stress.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400825
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Artemisia annua increases resistance to heat and oxidative stresses, but has no effect on lifespan in Caenorhabditis elegans Ciênc. Tecnol. Aliment.
OH,Seung-Il; KIM,Jun-Sung; KIM,Chul-Kyu; YI,Sun Shin; KIM,Sung-Jo; PARK,Sang-Kyu.
Abstract It is suggested that oxidative stress induced by cellular reactive oxygen species is one of the major causal factors of aging. The effect of dietary supplementation of anti-oxidants on response to environmental stressors and lifespan has been studied in various model organisms. In the present study, we examine the effect of Artemisia annua extract on resistance to oxidative, heat, and ultraviolet stresses in the nematode Caenorhabditis elegans. Artemisia annua significantly increases survival under oxidative and heat stresses, however has no effects in response to ultraviolet stress. Then, we measured the in vivo changes in expression of stress-responsive genes by Artemisia annua using green fluorescence protein. The expression of hsp-16.2, known...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemisia annua; Oxidative stress; Heat stress; Lifespan; C. elegans.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000200356
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Artificial cooling as an alternative to increase productivity and welfare of steers under heat stress Arq. Bras. Med. Vet. Zootec.
Correa-Calderón,A.; Morales,M.; Avendaño,L.; Leyva,C.; Rivera,F.; Díaz,R.; Soto-Navarro,S..
The effects of a cooling system on productive efficiency and welfare of Holstein steers were evaluated during the summer. Sixty steers in the finishing phase were randomly allotted to one of two treatment-groups. Animals of control group were only provided with shade (non-cooled group) and a group of animals under a cooling system were installed in the shaded area (cooled group), which were operated daily from 09am to 6pm during the 69d of the study. The averages of environmental temperature and relative humidity were 35.4°C and 35.3%, respectively, with a temperature-humidity index average of 81.4 during the study. Individual body weight was recorded every two weeks, while body surface temperature and respiratory frequency were recorded three times per...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Steer; Cooling system; Feedlot; Heat stress; Performance.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000500024
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Ascorbic acid and citric flavonoids for broilers under heat stress: effects on performance and meat quality Rev. Bras. Ciênc. Avic.
Peña,JEM; Vieira,SL; López,J; Reis,RN; Barros,R; Furtado,FVF; Silva,PX.
The aim of this study was to evaluate the effects of increasing doses of ascorbic acid (AA) and citric flavonoids (quercetin and rutin) on the performance and meat quality characteristics of broilers submitted to cyclic heat stress. Four-hundred one-day-old female Ross 308 were housed in 40 battery cages a in temperature controlled room. Treatments consisted of 0, 250, 500, and 1000 g/ton on of AA + citric flavonoids. Birds were fed ad libitum until 32 day of age. Beginning on day 14 post-hatch until the end of the experiment, in order to simulate cyclic heat stress, the temperature inside the room was increased to 32°C for 5 hours, and decreased until reaching the comfort temperature corresponding to the age of the animals. Birds were slaughtered at 33...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascorbic acid; Broiler; Heat stress; Flavonoids.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200008
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Available phosphorus levels in diets supplemented with phytase for male broilers aged 22 to 42 days kept in a high-temperature environment R. Bras. Zootec.
Tizziani,Tarciso; Donzele,Rita Flávia Miranda de Oliveira; Donzele,Juarez Lopes; Balbino,Eric Márcio; Silva,Amanda Dione; Figueiredo,Érika Martins de; Muniz,Jorge Cunha Lima; Jacob,Rodrigo de Freitas.
ABSTRACT This study was conducted to evaluate the effect of reduction of the available phosphorus (avP) in diets supplemented with 500 FTU/kg phytase on performance, carcass characteristics, and bone mineralization of broilers aged 22 to 42 days kept in a high-temperature environment. A total of 336 Cobb broilers with an average initial weight of 0.883±0.005 kg were distributed in a completely randomized design with six treatments - a positive control (0.354 and 0.309% avP without addition of bacterial phytase for the phases of 22 to 33 and 34 to 42 days, respectively), and another five diets with inclusion of phytase (500 FTU) and reduction of the level of avP (0.354, 0.294, 0.233, 0.173, and 0.112%; and 0.309, 0.258, 0.207, 0.156, and 0.106% for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone mineralization; Carcass characteristics; Heat stress; Performance; Thermal environment.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000200048
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Avaliação de parâmetros fisiológicos de caprinos da raça Anglonubiana em Teresina, Piauí. Repositório Alice
BARROS JUNIOR, C. P.; SOUSA JUNIOR, S. C. de; CAMPELO, J. E. G.; AZEVEDO, D. M. M. R.; CARVALHO, G. M. C.; SOUSA, P. H. A. A. de..
O objetivo da pesquisa foi avalia como respostas fisiológicas de cabras em lactação e cabras nuliparas da raça Anglonubiana na Temperatura retal (TR), frequência respiratória (FR) e frequência cardíaca (FC), como variáveis ambientais, temperatura do ar (TA) e umidade do ar (UA), e ainda, temperatura superficial do corpo dos animais e temperatura da pele (TPELE), que foram correlacionados com o peso corporal (PC) e com o escore corporal (EC), em dois períodos do ano (chuvoso e seco). Foram utilizadas 10 cabras lactantes e 10 não lactantes. Foi utilizado o Delineamento em Blocos Casulizados (DBC), ou teste de dados de médias usados para o teste de Tukey. Houve efeito (P<0,05) das variáveis climáticas nos períodos seco e chuvoso. Para as temperaturas...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Anglonubiana; Estresse térmico; Variáveis climáticas; Heat stress; Climate variables.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1089063
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Avaliacao termica ambiental de diferentes sistemas de acondicionamento em maternidades suinicolas. Repositório Alice
TURCO, S. H. N.; FERREIRA, A. S.; BAETA, F. da C.; AGUIAR, M. A.; CECON, P. R.; ARAUJO, G. G. L. de.
O objetivo deste trabalho foi estudar as condicoes termicas em diferentes sistemas de acondiconamento termico, em maternidades suinicolas, no verao, utilizando-se os seguintes tratamentos: 1) sala con ventilacao forcada com ar externo (VFE); 2) sala sem sistema de ventilacao forcada (SSV); 3) sala com amplas aberturas de janelas e sistemas de cortinas (SAC) e 4) sala com resfriamento evaporativo (RAE). O delineamento experimental foi inteiramente casualizado, em esquema de parcelas subdivididas, com oito horarios nas subparcelas e quatro repeticoes. Foram utilizadas 104 matrizes, distribuidas aleatoriamente por numero de paricao, em quatro lotes de 26 matrizes. Indice de temperatura de globo e umidade (ITGU), carga termica radiante (CTR), indice...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estresse; Ambiencia; Produção animal; Acondicionamento; Calor; Lactação; Suíno; Animal production; Environment; Heat stress; Lactation; Swine.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/133629
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Avaliacao termica ambiental de salas convenciondas e sala com amplas janelas e cortinas em maternidades suinicolas. Repositório Alice
TURCO, S. H. N.; FERREIRA, A. S.; TINOCO, I. F. F.; AGUIAR, M. A.; CECON, P. R.; ARAUJO, G. G. L. de.
O objetivo desta pesquisa foi estudar as condicoes termicas ambientais, com sistemas de acondicionamento termico, em maternidades suinicolas, no inveno, utilizando-se os seguintes tratamentos: 1) sala convencional (SSV) e 2) sala com amplas aberturas de janelas e sistemas de cortinas (SAC). O delineamento experimental utilizado foi o inteiramente casualizado, em esquema de parcelas subdivididas, com dois tratamentos nas parcelas e oito horarios nas subparcelas, com quatro repeticoes. Foram utilizadas 52 porcas, das racas Landrace e Large White, distribuidas aleatoriamente em dois lotes de 26 matrizes. O indice de temperatura de globo e umidade (ITGU), a carga termica radiante (CTR), o indice bioclimatico (IBC) e a umidade relativa do ar (UR) foram...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estresse; Ambiencia; Calor; Frio; Lactação; Suíno; Cold stress; Environment; Heat stress; Lactation; Swine.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/133631
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Behavior of Japanese quail in different air velocities and air temperatures PAB
Santos,Tatiany Carvalho dos; Gates,Richard Stephen; Tinôco,Ilda de Fátima Ferreira; Zolnier,Sérgio; Baêta,Fernando da Costa.
Abstract: The objective of this work was to evaluate the combined effects of air temperature and air velocity on the behavior of Japanese quail (Coturnix coturnix japonica). A total of 216 Japanese quail in their initial laying phase were used. Bird behavior was categorized with an ethogram (eat, drink, stop, open wings/shiver, others). The experimental design was a randomized complete block, in a 4x4 factorial arrangement, with four air velocities (0, 1, 2, and 3 m s-1) and air temperatures (17, 23, 29, and 35°C). The behavior “stop” was greater when the birds were subjected to 17°C. At 35°C, a significant reduction (p<0.05) was observed in the behavior “eat” at 0 m s-1, compared with the other velocities. The behaviors of laying quail are similar in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix japonica; Cold stress; Ethology; Heat stress; Thermal sensation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000500344
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Brain and hepatic Hsp70 protein levels in heat-acclimated broiler chickens during heat stress Rev. Bras. Ciênc. Avic.
Guerreiro,EN; Giachetto,PF; Givisiez,PEN; Ferro,JA; Ferro,MIT; Gabriel,JE; Furlan,RL; Macari,M.
In the present study we have investigated the effects of heat acclimation on brain and hepatic Hsp70 protein levels and body temperature of broiler chickens in response to gradual heat stress. Two groups of broilers were raised up to 47 days of age under distinct temperature conditions: thermoneutral (TN, according to bird age) or hot environmental (HS, 31-33°C). At 46 days of age, the birds reared at high ambient temperature were transferred to thermoneutrality conditions. After 18 h, these birds and the birds reared at thermoneutral temperature were submitted to gradual heat stress in a climatic chamber so that environment temperature was increased from 28 to 40ºC at a rate of 2ºC/h. Colonic temperature was measured using a thermometer sensor probe at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acclimation; Broiler chickens; Heat shock protein; Heat stress.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400002
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Broiler breeder behavior and egg production as function of environmental temperature Rev. Bras. Ciênc. Avic.
Pereira,DF; Nääs,IA; Romanini,CEB; Salgado,DD; Pereira,GOT.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler breeder; Heat stress; Behavioral pattern.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100002
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Can the critical temperature for photochemical damage in common bean plants be changed after a drought event? Bragantia
Ribeiro,Rafael Vasconcelos; Santos,Mauro Guida dos; Pimentel,Carlos; Machado,Eduardo Caruso; Oliveira,Ricardo Ferraz de.
Low water availability and high temperatures occur under field conditions and we hypothesize that the critical temperature for photochemical damage (TC) in common bean (Phaseolus vulgaris L.) plants is increased by the occurrence of previous water deficit in a genotype-dependent manner. Five common bean cultivars A320, A222, Carioca, BAT477 and Ouro Negro were evaluated. Thirty days after seedlings emergence, one group of plants was exposed to water deficit for ten days and rehydrated and another one was maintained well hydrated during the experimental period. The minimum chlorophyll fluorescence (FO) was monitored in leaf discs exposed to temperatures ranging from 25 to 45 oC and the TC values estimated. The previous water deficit did not affect TC, which...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Chlorophyll fluorescence; Hardening; Heat stress; Phaseolus vulgaris; Tolerance.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000400374
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Changes in ruminal fermentation and mineral serum level in animals kept in high temperature environments R. Bras. Zootec.
Salles,Márcia Saladini Vieira; Zanetti,Marcus Antonio; Salles,Fernando André; Titto,Evaldo Antonio Lencioni; Conti,Renata Maria Consentino.
In order to evaluate the effect of environmental temperature on ruminal fermentation and on mineral levels of growing ruminants, it was used 12 male calves (initial average weight 82.9 ± 7.7 kg, 100 days of age), were employed in a randomized block design (by weight) experiment, with repeated weight measurement and two environmental temperatures: thermoneutral (24ºC) and heat-stressed (33ºC), during 38 days. The animals exposed to 33ºC presented lower dry matter ingestion, lower T3 (triiodothyronine) serum level, higher ammoniacal nitrogen (NH3-N) level in the rumen liquid, and higher rectal and body temperatures during all the experimental period when compared to the animals kept in thermoneutral environment (24ºC). The animals kept under heat stress...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammoniacal nitrogen; Dry matter ingestion; Heat stress; Macromineral; Micromineral; Volatile fatty acids.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000400025
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Coffee acclimation to high temperatures involves lipid composition changes of chloroplast membranes and is strenghtened by elevated air CO2 concentration. Repositório Alice
RODRIGUES, W. P.; MARTINS, M. Q.; FORTUNATO, A. S.; MARTINS, L. D.; PAIS, I. P.; COLWELL, F.; LEITÃO, A. E.; RODRIGUES, A. P.; CAMPOSTRINI, E.; GHINI, R..
Depending on the greenhouse gas emission scenarios, air [CO2] could rise to between 421 and 936 ?L L-1, accompanied by a global surface warming between 0.3 and 4.8?C along the 2nd half of the present century. It is well known that supra-optimal air temperatures may cause significant disturbances in metabolism and plant growth, since biochemical reactions are accelerated, the chemical bonds are weakened and the lipid matrix of membranes becomes more fluid. Thylakoid membranes are particularly sensitive to supra-optimal temperatures, so that impairments at the photochemical steps of photosynthesis are among the first indicators of sensitivity to heat stress. Plants acclimate to thermal stress by means of a myriad of mechanisms, such as, increased expression...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Fatty acids; Chloroplasts; Climate change; Heat stress; Lipids; Pollution control.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1068039
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Comportamiento de ganado bovino de doble propósito pastando sitios con cobertura arbórea. Colegio de Postgraduados
Pérez Hernández, Víctor Manuel.
El objetivo fue evaluar el comportamiento y fisiología de ganado bovino de doble propósito pastando sitios con cobertura arbórea alta (CAA), baja (CAB) y sin cobertura (SCA), en las épocas de lluvia y sequía. Se observaron vacas adultas durante 24 días en cada época, registrando la temperatura corporal y los tiempos que dedicaron a las distintas actividades durante el día. Las vacas dedicaron el mismo tiempo al consumo en las lluvias (P > 0.05), sin embargo, hubo mayor tiempo en CAB durante la sequía (P < 0.0001). Durante las lluvias, las vacas en pastoreo bajo CAA mostraron menor motivación de irse al descanso o iniciar la rumia (P<0.001), y mayor hacia la exploración que en otros tratamientos (P<0.001); durante la sequía, aquellas pastando en...
Palavras-chave: Comportamiento; Cobertura arbórea; Ganado bovino; Estrés calórico; Behavior; Tree cover; Cattle; Heat stress; Agroecosistemas tropicales; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/1702
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Conception rate of artificially inseminated holstein cows affected by cloudy vaginal mucus, under intense heat conditions. Repositório Alice
MELLADO, M.; LARA, L. M.; VELIZ, F. G.; SANTIAGO, M. A. de; AVENDAÑO-REYES, L.; MEZA-HERRERA, C.; GARCIA, J. E..
The objective of this work was to obtain prevalence estimates of cloudy vaginal mucus in artificially inseminated Holstein cows raised under intense heat, in order to assess the effect of meteorological conditions on its occurrence during estrus and to determine its effect on conception rate. In a first study, an association was established between the occurrence of cloudy vaginal mucus during estrus and the conception rate of inseminated cows (18,620 services), raised under intense heat (mean annual temperature of 22°C), at highly technified farms, in the arid region of northern Mexico. In a second study, data from these large dairy operations were used to assess the effect of meteorological conditions throughout the year on the occurrence of cloudy...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Subclinical endometritis; Uterine infection; Infecção uterina; Gado leiteiro; Desempenho reprodutivo; Dairy cattle; Heat stress; Reproductive efficiency; Seasonal variation.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1020231
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Conception rate of artificially inseminated Holstein cows affected by cloudy vaginal mucus, under intense heat conditions PAB
Mellado,Miguel; Lara,Laura Maricela; Veliz,Francisco Gerardo; Santiago,María Ángeles de; Avendaño-Reyes,Leonel; Meza-Herrera,Cesar; Garcia,José Eduardo.
The objective of this work was to obtain prevalence estimates of cloudy vaginal mucus in artificially inseminated Holstein cows raised under intense heat, in order to assess the effect of meteorological conditions on its occurrence during estrus and to determine its effect on conception rate. In a first study, an association was established between the occurrence of cloudy vaginal mucus during estrus and the conception rate of inseminated cows (18,620 services), raised under intense heat (mean annual temperature of 22°C), at highly technified farms, in the arid region of northern Mexico. In a second study, data from these large dairy operations were used to assess the effect of meteorological conditions throughout the year on the occurrence of cloudy...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dairy cattle; Heat stress; Reproductive efficiency; Seasonal pattern; Subclinical endometritis; Uterine infection..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000600492
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Correlation between thermal comfort indices and physiological parameters of crossbred dairy heifers. Repositório Alice
CARVALHO, G. A. de; SALMAN, A. K.; CRUZ, P . G. da; SILVA, F. R. F. da; SOUZA, E. C. de; SCHMITT, E..
The effect of environmental climate on physiological responses of dairy cattle has been studied due to its impact on performance herd. This word studied the relationship of three environmental thermal indices with internal temperature (IT) and respiratory frequency (RF) of dairy heifers in Porto Velho, Rondônia.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Heat stress; Animal welfare.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101804
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