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| Registros recuperados: 81 | |
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| Teama,Fatma Edrees Ibrahim; El-Tarabany,Akram A.. |
| ABSTRACT The objective of the present study was to assess the effect of dietary supplementation of Omega-3 plus on some the physiological and biochemical traits in growing Baladi goats under hot summer conditions. Thirty-four growing male goats (4-5 months old) were randomly divided into two equal groups. Animals in group 1 were fed a concentrate feed mixture (CFM), which was the control group. Goats in group 2 (the experimental group) were offered Omega-3 plus (1,000 mg/animal day-1) (30% fish oil, containing 18% eicosapentaenoic acid and 12% docosahexaenoic acid + 100 mg wheat germ oil (0.22% tocopherols)) daily in addition to the basal diet for four months (the experimental period) during the hot summer season. Body weight (BW) changes of both groups... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cholesterol; Heat stress; IgG; Liver enzymes; T3; T4. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000400174 |
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| Oliveira,Will Pereira de; Oliveira,Rita Flávia Miranda de; Donzele,Juarez Lopes; Oliveira Neto,Adhemar Rodrigues de; Gomes,Paulo Cezar; Maia,Ana Paula de Assis; Campos,Paulo Henrique Reis Furtado; Gasparino,Eliane. |
| This study was conducted to verify the effects of dietary crude protein reduction on growth and carcass performance of 22-42-day-old broilers reared under different temperatures. Treatments were set up in a five by two factorial arrangement, with five crude protein levels (220, 210, 200, 190 and 184 g/kg) and two temperatures (21.6 and 32.2 ºC). Diets were isocaloric and essential amino acid-to-lysine ratio was maintained constant in all treatments. There was no interaction between crude protein reduction and environmental temperature for any of the parameters evaluated. Crude protein had no influence on feed intake. Nevertheless, weight gain and feed conversion ratio were linearly influenced by crude protein reduction. Worse performance was also observed... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Breast yield; Heat stress; Temperature; Thermoneutral temperature. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800010 |
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| Silva,Vanessa Karla; Silva,Janaina Della Torre da; Gravena,Rodrigo Antonio; Marques,Rafael Henrique; Hada,Fabricio Hirota; Moraes,Vera Maria Barbosa de. |
| The objective of this research was to evaluate the performance, carcass yield and intestinal morphometry of broiler chickens raised under different temperatures that received feed with or without yeast extract and prebiotic in the pre-initial phase. One thousand four hundred and forty one-day old male chicks were used, raised in different climate chambers. Feed with or without the addition of yeast extract and prebiotic was offered only in the pre-initial phase (1 to 7 days). From the eighth day on, every chick received the same feed, readjusted according to usual recommendations. A randomized complete experimental design was used in a 3 × 2 × 2 factorial arrangement, consisting of three environmental temperatures (hot, comfort and cold) and two levels of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass yield; Heat stress; Intestinal morphometry; Mannanoligosaccharides; Performance; Saccharomyces cervisiae. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100022 |
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| 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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| Erişir,Zeki; Şimşek,Ülkü Gülcihan; Özçelik,Mehtap; Baykalır,Yasin; Mutlu,Seda İflazoğlu; Çiftçi,Mehmet. |
| ABSTRACT The objective of this study was to determine the effects of grape seed (GS) supplementation to basal diet on performance, carcass characteristics, some biochemical parameters, and antioxidant status of tissues of Japanese quail in growth phase with different plumage colors exposed to heat stress (HS). A total of 144 eight-day-old Japanese quail including 72 (36 females, 36 males) grey and 72 (36 females, 36 males) golden were used in this study. The quail were kept under HS (16 h at 34 °C, 8h at 22 °C) and thermo-neutral (24 h at 22°C) conditions between 15 and 43 days of age. All quail were fed a basal diet (control) and basal diet supplemented with GS at both 10 g/kg and 20 g/kg ratios. Each feeding treatment was repeated three times including... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant; Feed additive; Heat stress; Japanese quail. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100201 |
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| Souza,Wander de; Barbosa,Orlando Rus; Marques,Jair de Araújo; Costa,Marco Aurélio Teixeira; Gasparino,Eliane; Limberger,Erni. |
| The aim of this work was to verify if the presence of trees and its height in formed silvipastoral systems with eucalyptus planted in rank can modify the microclimate and improve the environment for bovine raising during the day in summer. It was evaluated the microclimate of the environment in formed silvipastoral systems in rank of eucalyptus with 8 m, 18 m and 28 meters of height, compared to a system no shade in the summer. The experimental design was a split plot with six hour time in sub parcels. The systems are made up of parcels and the months as block in four replications and the interaction hour × system. The air temperature, black globe temperature, relative humidity and wind speed were observed to create the following indexes for thermal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ambient; Heat stress; Index; Shade; Thermal comfort; Trees. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300030 |
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| Yoo,Jaehong; Yi,Young Joo; Koo,Bonjin; Jung,Samooel; Yoon,Joung Ung; Kang,Hyun Bae; Lee,Do Hun; Heo,Jung Min. |
| ABSTRACT This study was conducted to examine the effect of alpha-lipoic acid with vitamin C and E on growth performance, intestinal morphology, and meat quality in broiler chickens under tropical conditions. A total of 288 one-day-old male ROSS 308 chicks (40±0.1 g) were used in a completely randomized design and allotted to one of six dietary treatments to form sixe replicates per treatment (eight birds per cage). The six dietary treatments were: a corn-soybean meal-based diet (NC; no antimicrobial compounds added) with 8 ppm alpha-lipoic acid (ALA); 150 ppm vitamin C and 75 ppm vitamin E (E-75); E-75 plus ALA (E-75-ALA); 150 ppm vitamin C and 50 ppm vitamin E (E-50) plus ALA (E-50-ALA); and 150 ppm vitamin C and 25 ppm vitamin E (E-25) plus ALA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Heat stress; Vitamin E; Tropical condition. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000300113 |
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| 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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| Campos,Paulo Henrique Reis Furtado; Le Floc'h,Nathalie; Noblet,Jean; Renaudeau,David. |
| ABSTRACT Global warming is one of the major environmental threats facing the world in the 21st century. This fact will have a significant impact on pig production due to its direct effects on welfare, health, and performance of pigs. Besides, the effects of high temperatures will presumably become more important over the next decades due to the development of pig production in developing countries mainly located in tropical and subtropical areas, where animals are often exposed to ambient temperatures above their thermal comfort zone. Furthermore, pigs reared in tropical areas are often confronted to sanitary challenges including poor hygiene conditions, lack of respect for sanitary rules, and pathogens. This results in the stimulation of the immune system... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal biometereology; Heat stress; Metabolism; Physiology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600537 |
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| Beux,Simone; Cassandro,Martino; Nogueira,Alessandro; Waszczynskyj,Nina. |
| ABSTRACT The objective of this study was to evaluate the effect of temperature-humidity index (THI) on the milk coagulation properties of Holstein-Friesian dairy cattle from northeast part of Italy. A total of 592 individual milk samples from six dairy herds were evaluated. The milk coagulation properties traits analysed were milk rennet coagulation time and curd firmness, as well as the fat, protein, and casein contents, pH, milk aptitude to coagulate (IAC), and the somatic cell count. The THI was determined during the periods of sample collection. The THI results showed that values of up to 75 did not significantly change the IAC values; however, when the THI values were above 75, the IAC decreased significantly. The control of THI can be used to... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Clotting; Curd firmness; Dairy cow; Heat stress. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000500429 |
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| 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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| Silva,Daiana Alves da; Pinto-Maglio,Cecília Alzira Ferreira; Oliveira,Érica Cristina de; Reis,Raquel Luiza de Moura dos; Carbonell,Sérgio Augusto Morais; Chiorato,Alisson Fernando. |
| ABSTRACT: The aim of this study was to investigate the effect of heat stress on 12 bean genotypes through the analysis of their reproductive biology in terms of flowering, pollen viability, meiotic behavior, and production. Plants were grown in a climate chamber at 25-20 °C (day and night) and at a high temperature treatment 37-26 °C (day and night) from the vegetative (V4) development stage to physiological maturity. The experimental design was 2 × 12 factorial arrangement with six replications and the factors consisted of heat treatments and genotypes. In three replications, the number of newly opened flowers was checked daily. At physiological maturity, the following traits were evaluated: percentage of pod set, number of pods, number of viable seeds,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Common bean; Heat stress; Pollen viability; Meiosis; Seed yield. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000301100 |
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| Perondi,Dani; Kipper,Marcos; Andretta,Ines; Hauschild,Luciano; Lunedo,Raquel; Franceschina,Carolina Schell; Remus,Aline. |
| ABSTRACT Several empirical models were proposed to predict feed intake (FI) of growingfinishing pigs reared under high environmental temperatures. However, these models have not been evaluated under conditions different from those in which they were developed. Twelve empirical models were evaluated using a database built after systematic literature review (observed data: 28 studies in which the FI was evaluated in pigs under high environmental temperatures). Model accuracy was assessed using the mean squared of prediction error (MSPE). Analyses were performed considering two scenarios: (1) general population, where all observed data were used in the simulation; (2) reference population, where data were filtered in order to simulate only scenarios with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Consumption; Heat stress; Modelling; Precision feeding; Swine. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000400296 |
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| Santos,Carolina de Castro; Delgado,Eduardo Francisquine; Menten,José Fernando Machado; Pedreira,Aparecida Carla de Moura; Castillo,Carmen Josefina Contreras; Mourão,Gérson Barreto; Brossi,Camila; Silva,Iran José Oliveira da. |
| Acute heat stress (AHS) modifies the structure of myofibrils affecting functional properties of meat, mainly the water holding capacity. This experiment aimed to identify changes in proteolysis and migration between the myofibrillar and sarcoplasmatic fractions due to pre-slaughter AHS. Myofibrillar fragmentation index (MFI), SDS-PAGE, western blot of vinculin (WB) and shear force (SF) were determined. Six hundred broilers (Gallus gallus) were slaughtered in three different days (ST). In each ST, groups of ten animals were placed in transport crates and submitted to AHS (35ºC, 75 - 85% RH) for 2 hours. Simultaneously, the non-stressed broilers (NS) were kept in thermoneutral environment (22ºC, 83 ± 6.6% RH) within the crates in the same density. After... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler; Heat stress; Lightness; Fragmentation index; Shear force. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500002 |
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| Miragliotta,Miwa Yamamoto; Nääs,Irenilza de Alencar; Manzione,Rodrigo Lilla; Nascimento,Fernando Ferraz do. |
| Broiler building typology associated with the local characteristics (climate, topography and surrounding vegetation) and handling systems (stocking density, curtains, equipment and nutrition) influence the inside environment. A spatial distribution analysis of these conditions may indicate stress zones in the house. The aim of this research was to apply spatial analysis of thermal, aerial and acoustic environmental conditions inside a tunnel ventilated broiler housing, with a stocking density of 18 birds m-2. This study was carried out in Rio Claro, SP, Brazil, in a 12 m × 115 m house divided into three equal sections (East, center and West), East-West oriented, and virtually divided on 132 cells, each one measuring 3.0 m × 3.5 m. At the geometric center... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler production; Environment; Geostatistics; Heat stress; Spatial distribution. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000500002 |
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| Tatsaporn Siripug; Suporn Katawatin. |
| HSP70-2 is well accepted as an indicator of heat stress. The purpose of this study was to investigate the physiological responses to heat stress of differential genotypes of HSP70-2 in dairy cattle. Thirty two female Holstein Friesian (HF) crossbred heifers, 2-3 years of age, 266 ± 5.6 kg body weight were placed outdoor with partial roof. Blood samples were collected to do genotyping of HSP70-2 using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Ambient temperature, relative humidity and physiological responses, including rectal temperature, respiration rate, sweating rate, pulse rate, skin temperature, and N/L ratio were examined at 06.00, 14.00, 18.00 and 22.00. Genotyping revealed that there were 14 and 18... |
| Tipo: PhysicalObject |
Palavras-chave: Dairy cattle; Genotypes; Genetic variation; Hsp70-2; Heat stress; Heat tolerant; Genetic improvement; โคนม; รูปแบบจีโนไทป์; พันธุกรรม; การแสดงออกของยีน; ความแตกต่างทางพันธุกรรม; การตอบสนองทางสรีรวิทยา; ความเครียด; อากาศร้อน; การทนร้อน; การรักษาสมดุลความร้อน; การปรับปรุงพันธุ์. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5750 |
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| CARVALHO,Giovanna Araújo de; SALMAN,Ana Karina Dias; CRUZ,Pedro Gomes da; SILVA,Francyelle Ruana Faria da; HALFEN,Jéssica; SCHMITT,Eduardo. |
| ABSTRACT The relationship between the indices of thermal comfort and internal temperature in lactating cows was evaluated inRondônia, western Amazonia in a 2 × 2 crossover trial carried out with eight Girolando cows, ½ Holstein × ½ Gyr (n=4) and – Holstein × ¼ Gyr (n=4), grazing palisade grass supplemented with or without soybean oil concentrates. Data logger thermometers adapted to intravaginal devices (hormone free) were used to measure internal temperatures (IT) every 10 min over 48 h. Concomitantly, environmental parameters (air temperature, relative humidity, wind speed, and solar radiation) were collected for the estimation of the temperature-humidity index (THI), equivalent temperature index (ETI), and predicted respiratory rate (PRR).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heat stress; Holstein × Zebu; Dairy cattle; Environmental stress index. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300191 |
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| 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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| Saki, Ali Asghar; Maleckey, Mostafa; Johari, Rahele; Mirzaie Goudarzi, Sara; Abdolmaleki, Mansoureh. |
| The effect of crude protein (CP), amino acid (AA), and dietary electrolyte balance (DEB) were evaluated on blood parameters, carcass traits, and broiler performance under heat stress (29-34°C). A total of 540 male chickens (Ross 308) were allocated to 12 diets with factorial arrangement 2 × 2 × 3, using a completely randomized design with three replicates of 15 chickens in grower (13 to 26 days) and finisher (27 to 42 days) periods. and 120, 220, and 320 mEq kg-1 DEB. The level of 21% CP increased body weight gain (BWG) and decreased feed conversion ratio (FCR) at grower period (p < 0.05). In contrast, 20% CP level decreased BWG and increased FCR at finisher period (p < 0.05). Further, 20% CP level reduced blood sodium and blood electrolyte balance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Standard and additional of digestible amino acid; Heat stress; Carcass traits. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/30747 |
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| Registros recuperados: 81 | |
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