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Search Results: 1 - 10 of 5401 matches for " Ciniro;Silveira "
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Suplementa??o mineral e mobiliza??o de cálcio nos ossos de eqüinos em pastagem de Brachiaria humidicola
Puoli Filho, José Nicolau Prospero;Arrigoni, Ciniro Costa, Mário de Beni;Silveira, Antonio Carlos;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000500020
Abstract: during 150 days 12 female quarter horse yearlings at one year of age were kept solely on brachiaria humidicola pasture, on a complete randomized design, with three treatments and four replications: level 0 (nrc1989); level 50 (50% above nrc); level 100 (100% above nrc). it was used 270 g of sugar as an intake promoter. biopsis were perfomed on the wing of ileum of each animal, one at the onset and the other at the end of trial, in order to evaluate ca mobilization and ca:p of the bone. forage samples were collected monthly to evaluate oxalate levels and chemical composition. there was a time effect on ca mobilization and ca:p (p< 0.05), regardless the treatments. the average of the three treatments, at the onset and at the end of the trial, for ca and p levels and ca:p was, respectively: 10.05, 5.22, 1.93:1 and 6.24, 4.06, 1.54:1. the levels of oxalate in the grass varied from 1.18 to 2.00%. suplementing ca to young horses at a level 200% greater than the national research council recomendation did not prevent ca mobilization from the bone when the animals were grazing brachiaria humidicola for an extended period of time.
Porcentagens de saponinas e taninos em vinte e oito cultivares de alfafa (Medicago sativa L.) em duas épocas de corte - Botucatu - SP
Vieira, Maria Eunice de Queiroz;Costa, Ciniro;Silveira, Ant?nio Carlos;Arrigoni, Mário De Beni;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000600007
Abstract: the experiment was carried out to evaluate saponins and tannins contents, the proteins solubility (ps) of 28 alfalfa cultivates: crioula, monarca, br 4, alto great, mh 4, sw 9210 a, 5929, br 1, el grande, 5715, mh 15, valley plus, br 2, rio, sw 8210, maricopa, ici 990, 5888, p 30, alfa-200, wl 516, sw 8112 a, br 3, florida 77, araucana, falcon, semit 921 and sutter. the analyzed material came from the 10th and 14th harvests (which occurred on 12/08/97 and 04/16/98, respectively) from an experiment conducted at the college of veterinary medicine and animal science, unesp, botucatu. samples from each cultivate were weighed and oven-dried at 52oc. saponins were extracted with a hydrophilic and lipophilic solvent, and their content was calculated by means of the following equation: y = 0.8121x - 1.4759 (r2 = 1.00). total and condensed tannins were ultrasound-extracted for 12 min. total tannin content was calculated by means of the following equation: y = 44.978 + 0.5644 (r2 = 0.9977); condensed tannin content was determined by multiplying the absorbency by 78.26 and dividing it by the dry matter content. ps was determined through the koh method, using the following formula: ps (%) = (100) (soluble protein) / crude protein. no differences were detected (p>0.05) among cultivates in saponin content, total tannin and condensed content of ps. harvest time effect was observed (p<0.05) in total tannin content only. the low average saponin content (1.0%) and protein solubility (34.11%) do not constitute a limiting factor for the use of the above alfalfa cultivars.
Medidas objetivas das carca?as e composi??o química do lombo de cordeiros alimentados e terminados com três níveis de proteína bruta em creep feeding
Ortiz, Jessé Siqueira;Costa, Ciniro;Garcia, Cledson Augusto;Silveira, Liciana Vaz de Arruda;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000700026
Abstract: the objective of this trial was to evaluate the effects of three concentrate protein levels (15, 20 or 25% cp) on measurements of carcass and longissimus dorsi muscle, weights and yields of cuts, and chemical composition and tenderness of meat of suffolk lambs in creep feeding. fifteen single birth lambs were used in this study. lambs were slaughtered when they reached a final body weight of 28 kg. after slaughter, carcasses were maintained in a refrigerator at 5oc for 24 hours followed by measurements on the left half carcass done after separation of the commercial cuts. the longissimus dorsi area was measured to obtain the loin eye area (lea, cm2). both left and right loins were frozen; the left was used for determination of chemical composition while the right for a tenderness test ("warner bratzler shear force"). different concentrate crude protein levels did not affect carcass measurements as well as measurements on the longissimus dorsi. however, significant differences among treatments were observed for weight and yield of shoulder clod with the highest values found on the 25% crude protein concentrate. chemical analyses of longissimus dorsi showed significant differences across treatments for ether extract, ash, and tenderness. it can be concluded that the diet containing soybean meal must be formulated to yield 25% of crude protein because it reduced the fat content and improved the tenderness of the meat. in addition, it also increased both weight and yield of shoulder clod with no changes on carcass measurements and weight and yields of the remaining cuts.
Efeito de diferentes níveis de proteína bruta na ra??o sobre o desempenho e as características de carca?a de cordeiros terminados em creep feeding
Ortiz, Jessé Siqueira;Costa, Ciniro;Garcia, Cledson Augusto;Silveira, Liciana Vaz de Arruda;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000700027
Abstract: this trial was carried out to evaluate the effects of different concentrate crude protein levels (15, 20 or 25%) on production and carcass traits of suffolk lambs in creep feeding. an economical analysis of the production system was also performed. fifteen single birth lambs fed ad libitum twice a day were used in this study. the average daily intake was measured by subtracting the orts from the amount of feed offered to the animals. lambs were weighed every fourteen days to determine body weight gain. to measure slaughter body weight (sw) animals were fasted for 16 h and then weighted. after evisceration both hot carcass weight and yield were obtained. to determine cold carcass yield and cooling losses, carcasses were placed in a refrigerator at 5oc for 24 hours and weighted again. the different concentrate crude protein levels affected the daily weight gain only when the slaughter age was used as the covariable. conversely, crude protein levels did not significantly change carcass traits in the present trial. it can be concluded that the concentrate with 25% of crude protein is recommended to suffolk lambs in creep feeding because of the higher daily weight gain and maintenance of carcass traits.
Influência do método de fena??o e tempo de armazenamento sobre a composi??o bromatológica e ocorrência de fungos no feno de alfafa (Medicago sativa, L. cv. Flórida 77)
Nascimento, Jussimara Manoela;Costa, Ciniro;Silveira, Ant?nio Carlos;Arrigoni, Mário De Beni;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000300005
Abstract: the objective of this experiment was to study the influence of six haying and four storage periods on the chemical composition and mold growth of alfafa hay. a 6x4 factorial arrangement was used in a completely randomized design, with five replicates for chemical analyses and four replicates for mold determinations. the haying methods were: t1- (shade, s) shade-drying; the forage was carried to a barn immediately after cutting and spreaded (s); t2 and t3: the material was sun-dried until a 50% weight loss and was shade-dried thereafter; t2 was spreaded (sun 50%, s) and t3 was piled up (sun 50%, p). treatments t4 and t5 consisted of sun-drying and revolving the forage until a 60% weight loss and then completing the drying process under shade, with the material either spreaded (t4, sun 60%, s) or piled up (t5, sun 60%, p). t6 consisted of sun-drying until an 80% loss and then piling up under shade (sun 80%, p). the four storage periods were: 0, 15, 30 and 60 days. it was observed that the hays originating from the longest sun-drying periods showed the worst quality in terms of cp, ndf and adf. mold occurrence was highest in the shade-dried hay (t1) and also in the piled-up material, due to lack of ventilation necessary for moisture removal. the most adequate method for alfalfa conservation consisted of sun-drying the forage until a 50% weight loss, followed by shade-drying of the spreaded material.
Porcentagens de saponinas e taninos em vinte e oito cultivares de alfafa (Medicago sativa L.) em duas épocas de corte - Botucatu - SP
Vieira Maria Eunice de Queiroz,Costa Ciniro,Silveira Ant?nio Carlos,Arrigoni Mário De Beni
Revista Brasileira de Zootecnia , 2001,
Abstract: O objetivo do estudo foi determinar os conteúdos de saponinas, taninos e a solubilidade da proteína (SP) de 28 cultivares de alfafa: Crioula, Monarca, BR 4, Alto Great, MH 4, SW 9210 A, 5929, BR 1, EL Grande, 5715, MH 15, Valley Plus, BR 2, Rio, SW 8210, Maricopa, ICI 990, 5888, P 30, Alfa-200, WL 516, SW 8112 A, BR 3, Florida 77, Araucana, Falcon, Semit 921 e Sutter. O material analisado foi obtido do 10o e 14o corte, respectivamente; em 08/12/97 e 16/04/98, de um experimento desenvolvido na Faculdade de Medicina Veterinária e Zootecnia, UNESP, Botucatu. Amostras de cada cultivar foram colhidas, pesadas e secas em estufa a 52oC. As saponinas foram extraídas com solvente hidrofílico e lipofílico e o conteúdo foi calculado pela equa o y=0,8121x-1,4759, R2 = 1,00. A extra o dos taninos totais e condensados foi efetuada por meio de ultra-som (12 min), sendo os taninos totais determinados pela equa o: y=44,978 + 0,5644 com R2=0,9977 e os condensados, multiplicando-se a absorbancia por 78,26 dividido pelo teor de matéria seca. A SP foi determinada pelo método de KOH, de acordo com a seguinte fórmula: SP (%) = proteína solúvel x 100/proteína bruta da amostra. Os teores de saponinas, taninos totais e condensados e a solubilidade da proteína n o diferiram (P>0,05) entre as cultivares. Houve efeito (P<0,05) da época de corte apenas sobre o teor de taninos totais. Os teores médios de saponinas de 1,00% aliados à baixa solubilidade média da proteína bruta (34,11%) n o se constituem em fatores limitantes para uso dos cultivares de alfafa estudadas.
Influência do método de fena o e tempo de armazenamento sobre a composi o bromatológica e ocorrência de fungos no feno de alfafa (Medicago sativa, L. cv. Flórida 77)
Nascimento Jussimara Manoela,Costa Ciniro,Silveira Ant?nio Carlos,Arrigoni Mário De Beni
Revista Brasileira de Zootecnia , 2000,
Abstract: O experimento objetivou estudar a influência de 24 tratamentos resultantes do arranjo fatorial 6 x 4, referente a seis métodos de fena o e quatro tempos de armazenamento em delineamento inteiramente casualizado, com cinco repeti es para análise bromatológica e quatro para determina o de fungos. Os métodos de fena o consistiram em: T1 - (sombra, E) secagem à sombra, a forrageira foi levada para o galp o imediatamente após o corte e mantida espalhada (E); T2 e T3 - o material permaneceu ao sol até perder 50% do peso e posteriormente foi seco à sombra, sendo o T2 espalhado (sol 50%, E) e o T3 amontoado - A (sol 50%, A); T4 e T5, consistiram do recolhimento da forragem para completar sua secagem à sombra, após viragem e perda de 60% de peso sob exposi o ao sol, T4 espalhada (sol 60%, E), T5 amontoada (sol 60%, A) e o T6 perda de 80% do peso sob exposi o ao sol e posteriormente amontoado à sombra (sol 80%, A). Os quatro tempos de armazenamento foram: 0, 15, 30 e 60 dias. Verificou-se que os fenos nos quais o material ficou mais tempo exposto ao sol apresentaram pior qualidade em termos de PB, FDN e FDA. A ocorrência de fungos foi maior no feno seco à sombra (T1) e naqueles em que a forragem foi amontoada, devido à ausência de aera o para retirada de umidade. O método mais adequado para a conserva o da alfafa consistiu na exposi o da forragem ao sol até a perda de 50% do peso da forragem original, com posterior secagem do material espalhado à sombra.
Efeito da somatotropina na hipertrofia das fibras musculares esqueléticas e precocidade reprodutiva de novilhas Nelore
MOREIRA PAULO SéRGIO ANDRADE,SILVEIRA ANTONIO CARLOS,ARRIGONI MáRIO DE BENI,COSTA CINIRO
Pesquisa Agropecuária Brasileira , 2000,
Abstract: O trabalho objetivou avaliar o desempenho produtivo, precocidade sexual e hipertrofia das fibras musculares esqueléticas em resposta à aplica o de somatotropina bovina recombinante (rbST). Foram utilizadas 58 novilhas Nelore de sete meses de idade com peso vivo médio de 193 kg. O delineamento experimental foi inteiramente casualizado, em um esquema fatorial incompleto e dividido em duas fases experimentais. Na primeira fase, com dura o de 150 dias, os animais foram divididos em dois grupos, de acordo com os níveis de rbST, 0 mg (controle) e 500 mg, a cada 28 dias. Na Fase II, os animais do grupo controle da Fase I foram divididos em 15 e 14 novilhas, que receberam 0 mg e 500 mg de rbST, respectivamente; os animais tratados com 500 mg na Fase I foram divididos em 15 e 14 novilhas e receberam 500 mg e 1.000 mg de rbST, respectivamente, com intervalos de 28 dias, e dieta em regime de pastejo, durante 180 dias. Foram retirados fragmentos do músculo semitendinosus para análise das fibras, no início e final da Fase I. Os animais foram pesados a cada 28 dias. Os resultados mostraram que n o houve diferen a significativa (p>0,05) entre os tratamentos quanto ao ganho de peso e quanto à precocidade sexual. Quanto ao diametro das fibras, os animais que receberam rbST tiveram um aumento significativo (p<0,01) tanto nas fibras de contra o lenta quanto nas fibras de contra o rápida em rela o aos animais-controle.
Idade à desmama e manejo alimentar na produ??o de cordeiros superprecoces
Villas B?as, Antonio Sérgio;Arrigoni, Mario De Beni;Silveira, Antonio Carlos;Costa, Ciniro;Chardulo, Luiz Artur Loyola;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000800022
Abstract: the objective of this experiment was to verify the effect of weaning age and ewe supplementation on the production of super-young lambs and on the reproductive cycle of dams. sixty-six hampshire down ewes, ranging between 3 and 4 years of age, were kept with their lambs on grass pasture. all lambs were creep fed. the ewes were either supplemented (n=34) or not (n=32) during lactation. the lambs were randomly allocated to four treatments: t1 - weaned from supplemented dams at 34 days of age (n=16); t2 - weaned from supplemented dams at 62 days (n=18); t3 - weaned from not supplemented dams at 34 days (n=16); t4 - weaned from not supplemented dams at 62 days (n=16). a 2 x 2 factorial arrangement was used in a randomized block design. lambs from t2 and t4 showed higher weight gains than those weaned at days 34 (t1 and t3). weight at day 62 was higher and slaughter age lower in lambs weaned from not supplemented mothers. carcass yield and compactness index were higher in the lambs weaned at day 62. dam supplementation increased meat tenderness. no difference was observed in backfat thickness. no difference was observed in weight dams at weaning, but difference between body weight of dam at parturition and at weaning weight was observed. neither dam supplementation nor lamb weaning age showed any effect on dam reproductive efficiency.
Fermentation and nutritive value of silage and hay made from the aerial part of cassava (Manihot esculenta Crantz)
Pinho, Eduardo Zambello de;Costa, Ciniro;Arrigoni, Mario De Beni;Silveira, Antonio Carlos;Padovani, Carlos Roberto;Pinho, Sheila Zambello de;
Scientia Agricola , 2004, DOI: 10.1590/S0103-90162004000400003
Abstract: cassava (manihot esculenta crantz), although native to brazil, is still underutilized, especially when it comes to using its aerial part. in order to study the potential of the cassava plant for use as animal feed, the present work evaluated the characteristics of the aerial part of cassava when submitted to the processes of ensiling and haymaking. treatments consisted of: aerial part of the plant ensiled without wilting (pas); aerial part ensiled after wilting (pae), and aerial part made into hay (paf). chemical analyses were run in order to evaluate the traits that determine the nutritional value of silage and hay. wilting increased dry matter concentration from 25% to 27.7%, without changing the concentration of soluble carbohydrates (33.3 and 35.5% in the pas and pae, respectively), as well as buffer capacity (204 mmol kg-1 dm in pas and 195 mmol kg-1 dm in pae). neither ph (3.57 in fresh silage and 3.60 in pae) nor the adin concentration (11.32% of total nitrogen in pas and 9.99% of total nitrogen in pae) differed between the silages, but adin concentration was higher in hay (15.39%). wilting caused an increase in the concentration of ammonia (from 6.5% of total nitrogen in pas to 13.0 of total nitrogen in pae). the levels of volatile fatty acids did not change with wilting. the ensiling process reduced the concentrations of free hydrocyanide (hcn), without, however, affecting cyanohydrin.
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