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Search Results: 1 - 10 of 16584 matches for " animal performance "
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Comparative Study of Imaging Characteristics of I-125 Imaging Using the Siemens Inveon Scanner and Siemens Symbia TruePoint  [PDF]
Young Jun Kim, Ilhan Lim, A Ram Yu, Byung Il Kim, Chang Woon Choi, Sang Moo Lim, Jin Su Kim
Journal of Biomedical Science and Engineering (JBiSE) , 2015, DOI: 10.4236/jbise.2015.810064
Abstract: Objective: Although Iodine-125 (125I) has been widely used for in vitro studies because of its relatively long half-life (60.1 days), 125I imaging is limited because of its low energy (27 - 35 keV), even in an animal-dedicated system. In this study, imaging characteristics of 125I were assessed using a small animal-dedicated imaging system and clinical scanner. Methods: Using the Siemens Inveon and Siemens Symbia TruePoint systems, imaging characteristics such as resolution, sensitivity, and image quality were compared. Mouse high resolution (MHR-0.5), mouse general purpose (MGP-1.0), and mouse high sensitivity (MHS-2.0) collimators were used for the Inveon scanner, and low energy high-resolution (LEHR) and low energy all-purpose (LEAP) collimators were used for the Symbia TruePoint. For animal imaging, 16.8 MBq of 125I was administered to BALB/c mice intravenously, and the planar image and single-photon emission computed tomography (SPECT) were obtained using both scanners. Results: The resolution of 125I for the Inveon scanner was 3.98 mm full width at half maximum (FWHM) at a 30-mm distance with the MHR-0.5 collimator, and the value of Symbia scanner was 8.72 mm FWHM at a 30-mm distance with the LEHR collimator. The sensitivity of 125I for the Inveon scanner was 21.87 cps/MBq, and the value for the clinical scanner was 30.55 cps/MBq. The planar images of mice were successfully obtained at the level of evaluating specific binding in both scanners. Conclusion: 125I small animal imaging can be achieved with a clinical scanner. This result may enhance the utilization of 125I small animal imaging using a clinical scanner.
Synbiotic as Feed Additives Relating to Animal Health and Performance  [PDF]
Hozan Jalil Hamasalim
Advances in Microbiology (AiM) , 2016, DOI: 10.4236/aim.2016.64028
Abstract: According to the increasing of human population in the world, it reached about seven billion people and it continuously increased. In this background, the food source in both animal and plant origin must be increased accordingly. For these we must use and add some feed additives such as antibiotic, probiotic, prebiotic, postbiotic and synbiotic for the animal feed to increase production (meat, egg, milk and fish) and improve health. In early cases, probiotic as mono or mixed beneficial live microorganism was used as feed additive that plays a significant role in several health conditions and performances. In another way, the scientists use some ingredients indigestible with carbohydrates origin, especially oligosaccharides as a source of energy for beneficial microorganisms in the body which were called prebiotic, and it is indigestible fermented food substrates that stimulate the growth, composition and activity of microorganisms in gastrointestinal and improve host. Most of the scientists urged to use all the above in such way that have more benefits in animal health and performance which were therefore called synbiotic, that was a combination between probiotic and prebiotic which beneficially had significant effects on the host by improving the survival and implantation of live microbial dietary supplements in the gastrointestinal tract, and thus improving animal health and performance. So, it was proposed that the synbiotic in this research increased beneficial microorganisms in the gastrointestinal tract and improved intestinal architect, and then promoted intestine environment. Consequently, it can improve blood indices, and especially decrease bad cholesterol (Low-density lipoprotein), decrease harmful microorganisms and toxins. However, it can also improve ingredient product, increase mineral absorption and nutrient. In conclusion, it can improve animal health and performance.
Efeito da enzima fitase nas ra??es de frangos de corte, durante as fases pré-inicial e inicial
Costa, Fernando Guilherme Perazzo;Brand?o, Patrícia Araújo;Brand?o, Jocelyn Santiago;Silva, José Humberto Vilar da;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000300037
Abstract: 1.080 male broilers were used from 1 to 7 and 8 to 21 days of age to evaluate phytase diet supplementation in chicks performance. two experimental rations were used each phase, whereas the first diet recommended by company broiler integrator (c-1) and the second suggested by furnished company enzyme (c-2). treatments consisted in: t1 and t4 - ration without enzyme and t2 and t3 - ration with enzyme. a completely randomized design was used, in a 2 x 2 factorial model (two rations x two levels of enzyme) with nine replicates and 30 birds per unit. the enzyme was used in amount of 100 g/ton of ration. statistically significant difference (p<0.01) was found between treatments to weight gain and feed:gain ratio to pre-starter and initial phases, where best results were obtained with c-1 with enzyme addition, showing the importance of phytase in broiler chicks rations as to birds performance.
Produ o e qualidade do leite de vacas da ra a Holandesa alimentadas com silagens de grama estrela (Cynodon nlemfuensis Vanderyst) = Production and quality of milk from Holstein cows fed stargrass silages (Cynodon nlemfuensis Vanderyst)
Valter Harry Bumbieris Junior,Clóves Cabreira Jobim,Daniele Cristina da Silva,Maximiliane Alavarse Zambom
Acta Scientiarum : Animal Sciences , 2007,
Abstract: Objetivou-se avaliar o desempenho e a qualidade do leite produzido por vacas da ra a Holandesa no ter o final da lacta o, alimentadas com silagens de grama estrela com aplica o de inoculante ou uréia em rela o à silagem de milho. Foram avaliadas silagens de grama estrela com aplica o de aditivo enzimo-bacteriano na dosagem de 80 g deinoculante/tonelada, uréia na dosagem de 7 kg t-1 e silagem de milho. Para avalia o do desempenho produtivo e digestibilidade foram utilizadas seis vacas da ra a Holandesas com peso médio de 480 kg distribuídas em delineamento (duplo) quadrado latino (3 x 3). Asdigestibilidades da MS, PB e FDN foram maiores para a silagem de milho. O fornecimento de silagens de grama estrela com aditivo e com uréia n o interferiu na produ o e qualidade do leite, mostrando-se como alternativa para sistemas de produ o animal com base emvolumosos conservados mediante a análise econ mica da substitui o da silagem de milho. The study aimed to evaluate animal performance and quality of milk from Holstein cows during the final third period of lactation fed stargrass silages supplied with inoculant or urea in relation to corn silage. Stargrass silages with enzymatic-bacterial inoculant (80 g of additive/ton of silage), urea supply (7 kg t-1) and corn silage were evaluated. Six Holstein cows with an average body weight of 480 kg were allocated in a double Latin square design (3 x 3). Corn silagepresented the highest values of DM, CP and NDF digestibility when compared to stargrass silages. Supplying Holstein cows with stargrass silages with additive and urea did not promote any effect on production and milk quality. Thus, it can be an alternative in animalproduction systems based on conserved roughage, depending on economical analysis for the replacement of corn silage.
Effect of Tannin in Green Tea By-Product in Combination with Bio-Char Supplemented into Basal Beef Cattle Diet on Nutrient Digestibility, Methane Production and Animal Performance  [PDF]
M. A. Khoa, N. H. Quang, T. V. Thang, T. V. Phung, T. T. Kien
Open Journal of Animal Sciences (OJAS) , 2018, DOI: 10.4236/ojas.2018.83015
Abstract: The experiment was conducted by using 20 bulls of Lai Sind cattle (a cross breed between Red Sindhi and local Vietnam yellow cattle) from 15 - 16 months of age, weighed approximately 154 - 156 kg, housed individually with provision of adequate feed trough and free access to water to evaluate the effect of tannin sourced from green tea by-product and addition of bio-char on methane production and animal performance. The experimental diets were formulated by replacing elephant grass in basal diet by bio-char and green tea by-product with the replacement of 0.5 - 1 bio-char and 3% - 5% green tea by-products, respectively to make the content of tannin in the diet of 7.3 g and 12.5 g tannin per kg dry matter. Results from this study revealed that bio-char and green tea by-product included into the diet with different levels had significantly affected on the feed intake, as the increasing level of tannin in the diet tended to increase the feed intake. The inclusion of green tea by-product in the diet which resulted in the content of tannin in the diet of 12.5 g/kg DM had significantly reduced methane emission without altering animal performance, thus the inclusion of 0.5% bio-char and 5% of green tea by-product can be applied in order to mitigate methane emission, thus contributed to environment protection.
Zoneamento bioclimático da regi?o sudeste do Brasil para o conforto térmico animal e humano
Oliveira, Lutércia M. F. de;Yanagi Junior, Tadayuki;Ferreira, Elizabeth;Carvalho, Luiz G. de;Silva, Mariano P. da;
Engenharia Agrícola , 2006, DOI: 10.1590/S0100-69162006000300020
Abstract: the main goal of this study was to evaluate the southeastern brazilian climate conditions through temperature-humidity index (thi) and to present a bioclimatic mapping relating to animal and human thermal comfort. the thi values were estimated by air-temperature and relative humidity for a period from 1980 to 2000. four intervals of thi were used to classify human performance (thi < 74: comfort; 74 < thi < 79: warm; 79 < thi < 84: hot and thi > 84: extremely hot) and two intervals to classify animal production (79 < thi < 84: dangerous and thi > 84: emergency). the results showed higher risk of thermal discomfort in the period from october to april, comparing to the period between may and september. the worst period was the one between december and march. although it was observed that thiaverage values among 79 and 83 occurred in less than 3.6% of the time, humans as well as animals could suffer some amount of thermal stress during the hottest period of the day, affecting negatively both animal production and human comfort. thi greater than 84 was not verified on the southern brazilian region.
Produ??o animal e valor nutritivo da forragem de pastagem de coastcross consorciada com amendoim forrageiro
Barbero, L.M.;Cecato, U.;Lug?o, S.M.B.;Gomes, J.A.N.;Lim?o, V.A.;Abrah?o, J.J.S.;Roma, C.F.C.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2010, DOI: 10.1590/S0102-09352010000300021
Abstract: in this study, the following treatments were used: coastcross + forage peanut + 200kg/ha of n; coastcross + forage peanut + 100kg/ha of n; coastcross + 200kg/ha of n and coastcross + forage peanut (plots) in the winter, spring, summer, and autumn (subplots), designed in randomized blocks. heifers were managed under continuous stocking and variable stocking rate on pasture maintained at 17cm height. samples were collected every 28 days determining the nutritional value of forage. average daily gain (adg), weight gain (wg), stocking rate (sr), and number of animals/day (nad) were evaluated. as for forage nutritional value, the worst results were found in pasture without fertilization, 16.9% and 6.0% cp of leaf and stem, respectively, and 70.1% ndf in leaves. in the spring and summer, animals had a higher adg, 0.518 and 0.515kg/animal, than 0.396 and 0.293kg/animal in the winter and autumn, respectively. sr was higher in pastures that received higher nitrogen doses, 5.38au/ha in average; and in the summer, 6.81au/ha. lwg was higher in fertilized areas, 1,341kg lw/ha, than in not fertilized pastures, 735kg/ha.
Avalia??o do desempenho atlético de eqüinos Puro-Sangue Inglês após cirurgia via artroscópica para tratamento de fraturas do osso carpo-radial
SALLES GOMES, Thiago Luiz;ALVARENGA, José;
Brazilian Journal of Veterinary Research and Animal Science , 1998, DOI: 10.1590/S1413-95961998000200008
Abstract: we used twelve horses, psi, nine males, from the jockey club of s?o paulo. the surgical treatment was very efficient in all horses in this study, and we found better results than those found in the literature.
Suplementa??o protéica energética no desempenho de novilhas em pastejo durante a fase de termina??o
Moretti, Matheus Henrique;Reis, Ricardo Andrade;Casagrande, Daniel Rume;Ruggieri, Ana Claudia;Oliveira, Rodrigo Vidal;Berchielli, Telma Teresinha;
Ciência e Agrotecnologia , 2011, DOI: 10.1590/S1413-70542011000300024
Abstract: this study was conducted to evaluate the effect of the diet supplementation on the heifers performance in finishing phase, maintained in a marandu grass pasture managed in intermittent grazing system during the rainy season. twenty crossbreed (? nelore, ? santa gertrudes, ? braunvieh) heifers with average initial body weight of 300 kg and 22 months old were used. the treatments consisted of two types of supplements: mineral (sm) ad libtum and energy protein supplementation (pes) provided 0.3% of the body weight daily. the evaluated variables were: animal performance and carcass traits measured by ultrasound each 28 days. supplementation affected daily weight gain (p=0.057), 0.700 kg/day for supplemented animals against 0.587 kg/day for animals receiving salt-mineral. there were no supplementation effect on the loin eye area and depth of the gluteus medius muscle. the other characteristics examined by the ultrasound technique did not differ according to the treatments. protein and energy supplementation of the diet allows additional gains that reflected in increased deposition of muscle of heifers grazing marandu grass during the wet season.
Desempenho de novilhas leiteiras em pastagens anuais de inverno sob sistema de integra??o lavoura-pecuária
Silva, Hernani Alves da;Moraes, Aníbal de;Carvalho, Paulo César de Faccio;Pontes, Laíse da Silveira;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011001000034
Abstract: the objective of this work was to assess the rearing viability of dairy heifers grazing single or intercropped winter pastures, under crop-livestock integration system. the experiment was carried out in castro, paraná state, brazil. a complete block design was used, in a factorial arrangement, with two animal categories - light-weight, with 192±40.9 kg, and heavy-weight animals, with 278±41.2 kg -, and two pasture types: annual ryegrass (lolium multiflorum) intercropped with black oat (avena strigosa), white clover (trifolium repens) and red clover (trifolium pratense); and single annual ryegrass pasture. a continuous grazing method with variable stocking was used, with 20-cm sward management height. single annual ryegrass pasture provided an average daily gain (0.93±0.032 kg per day per animal) significantly higher than intercropped pastures (0.79±0.032 kg per day). light animals had higher weight gain per hectare (3.54±0.163 kg ha-1 per day) than heavy animals (2.99±0.163 kg ha-1 per day), which was influenced by pasture type: light animals had best performance on single pasture, and heavy animals on intercropped pastures. rearing dairy heifers is viable in the pasture phase of integrated crop-livestock systems.
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