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Decreased levels of vitamin D3 and supplementation with 1,25-dihydroxyvitamin D3-glycoside on performance, carcass yield and bone quality in broilers Ciência Rural
Alves,Osvanira dos Santos; Calixto,Ligia Fatima Lima; Araujo,Alexandre Herculano Borges; Torres-Cordido,Karoll Andrea Alfonso; Reis,Túlio Leite; Calderano,Arele Arlindo.
ABSTRACT: An experiment was performed to evaluate the effect of decreased levels of vitamin D3 in the premix and 1,25-dyhydroxyvitamin D3-glycoside (1,25(OH)2D3-glycoside) supplementation on performance, carcass yield and bone quality in 42d old broilers. Seven-d-old male chickens Cobb500® were distributed in a randomized design with six treatments: a control diet with inclusion of vitamin D3 in the premix, without supplementation of 1,25(OH)2D3-glycoside, and five diets with decreased levels of vitamin D3 (100%, 75%, 50%, 25% and 0% about the control) plus the addition of 1,25(OH)2D3-glycoside, 50g ton-1 of diet. The main results were to reduce the tenor of Vitamin D3 in the premix when the addition of 1,25(OH)2D3-glycoside did not affect (P>0.05) the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone growth; Bone strength; Calcitriol; Poultry; Solanum glaucophylum..
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800651
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Efeito de linhagem e sexo nas características geométricas e biomecânicas de tíbias de frangos de corte - doi: 10.4025/actascianimsci.v33i1.8090 Animal Sciences
Reis, Denise Torres da Cruz; Universidade Fedral de Viçosa; Torres, Robledo de Almeida; Universidade Federal de Viçosa; Barbosa, Anderson de Almeida; Universidade Federal de Viçosa; Rodrigues, Conrado de Souza; Centro Federal de Educação Tecnológica de Minas Gerais; Moraes, George Henrique Kling de; Universidade Fedral de Viçosa.
A criação intensiva de frangos de corte, aliada à nutrição e ao melhoramento genético com foco no ganho de peso, tem resultado em índices crescentes da incidência de problemas de pernas. Dentre as variáveis que podem contribuir para a ocorrência destes problemas, estão a linhagem e o sexo. Neste contexto, avaliaram-se propriedades geométricas e mecânicas de tíbias de frangos de corte, machos e fêmeas, de três linhagens comerciais no periodo final de crescimento, entre 21 e 42 dias. As características geométricas refletem a resposta adaptativa dos ossos, com relação direta entre suas dimensões e o peso vivo das aves. Quanto às características mecânicas obtidas de ensaios de flexão, observa-se o que o julgamento da robustez óssea pode levar a conclusões...
Tipo: Análise laboratorial Palavras-chave: 5.04.00.00-2 dimorfismo sexual; Ensaios mecânicos; Problemas de pernas; Resistência óssea Zootecnia sexual dimorphism; Mechanical tests; Leg problems; Bone strength.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/8090
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Effect of the levels of calcium and particle size of limestone on laying hens R. Bras. Zootec.
Araujo,José Anchieta de; Silva,José Humberto Vilar da; Costa,Fernando Guilherme Perazzo; Sousa,Janaína Maria Batista de; Givisiez,Patrícia Emília Naves; Sakomura,Nilva Kazue.
This experiment was conducted to evaluate the effect of levels of calcium (Ca) and particle size of limestone (LS) for laying hens. It was used 216 Dekalb White laying hens at 25 to 49 weeks of age in a completely randomized design in a 3 × 2 factorial arrangement, composed of three levels of calcium (3.92, 4.02 and 4.12%) and two particle sizes of limestone (thin - 0.60 mm; and thick - 1.00 mm), resulting in 6 treatments with six replicates of six birds. There was no significant effect of levels of calcium and limestone particle size neither of the interaction calcium × particle size for feed intake, egg weight, specific gravity, shell thickness, shell percentage, Haugh unit, calcium and phosphorus digestibility and percentage of digestive tract....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone strength; Egg quality; Performance.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500009
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Glycosaminoglycans and vitamin C in ovo feeding affects bone characteristics of chicks R. Bras. Zootec.
Santos,Elaine Talita; Sgavioli,Sarah; Castiblanco,Diana Maryuri Correa; Domingues,Carla Heloísa de Faria; Quadros,Thays Cristina Oliveira de; Borges,Liliana Longo; Petrolli,Tiago Goulart; Baraldi-Artoni,Silvana Martinez.
ABSTRACT Different levels of glycosaminoglycans (chondroitin sulfate and glucosamine sulfate) and vitamin C were injected in ovo to determine whether additive use influences the incubation parameters and bone characteristics of posthatch chicks. Hatchability was not affected by addition of glycosaminoglycans and vitamin C in ovo. However, chicks that received 4 μg additive showed 2.86% reduction in total mortality when compared with chicks from non-injected eggs. Moreover, tibia area and femur bone mineral density increased in chicks from eggs injected with 2.16 and 6.00 μg of additive, respectively. In ovo feeding with glycosaminoglycans and vitamin C can benefit bone development in embryos and reduce total mortality during the incubation period.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascorbic acid; Bone mineral density; Bone strength; Chondroitin; Glucosamine.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100538
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Limestone particle size and artificial light for laying hens in the second laying cycle R. Bras. Zootec.
Oliveira,Alexsandro Nunes de; Freitas,Ednardo Rodrigues; Filgueira,Thales Marcel Bezerra; Cruz,Carlos Eduardo Braga; Nascimento,Germano Augusto Jerônimo do.
The experiment was conducted to evaluate the effects of limestone particle size and the use of artificial light for laying hens in the second laying cycle. We used 240 Hisex White laying hens at 82 weeks of age in a completely randomized design in a 5 × 2 factorial arrangement, resulting in 10 treatments with 4 replicates of 6 birds. The variables were the five particle sizes obtained by increasing the proportion of thick limestone (0, 25, 50, 75 and 100%) compared with thin limestone and two lighting programs: with and without artificial light. Limestone particle size and light did not affect performance or egg quality. However, there were changes in bird feeding schedule throughout the day as a response to the lighting program. Bone quality, density and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Eggshell; Lighting; Nutrition; Bone strength.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700004
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Phosphorus availability of rock phosphates as compared with feed-grade phosphates for swine R. Bras. Zootec.
Souza,Luiz Waldemar de Oliveira; Moretti,Anibal de Sant'Anna; Tucci,Fernanda Marcussi; Souza,Nedilse Helena de; Leal,Paulo Ademar Martins; Anzai,Nelson Haruo.
One hundred ninety two swine were used in a trial to assess the relative bioavailability of phosphorus (RBP) in six phosphate sources. Phosphates were three feed grade phosphates (FP), two made in Brasil, and one USA made, and three rock phosphate samples (RP) originated from two mines sites in Brasil, and one mine site in Israel. Levels of calcium, phosphorus and fluorine in RP were 29, 12 and 1.7% (RP source 1), 33, 14 and 1.4% (RP source 2), and 30, 14 and 3.6% (RP source 3), respectively. Pigs were fed a corn-soybean meal basal diet (18% CP, 0.95% Lys, 0.75% Ca, 0.37% P) or the basal diet with 0.15% P from a standard purified grade calcium phosphate (SP), or with 0.15% P from experimental FP or RP. Each diet was fed to six pen replicates of four pigs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Available phosphorus; Bone strength; Performance; Piglets.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000100012
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Quality parameters of the tibiae and femora of ostriches Rev. Bras. Ciênc. Avic.
Almeida Paz,ICL; Mendes,AA; Balog,A; Almeida,ICL; Martins,MRFB; Vulcano,LC; Komiyama,CM.
An experiment was carried out to establish mean bone quality values of the tibiae and femora of ostriches and to evaluate these bones. The right leg bones of 10 males and 10 female African Black ostriches were evaluated. Birds were radiographed immediately after slaughter (during bleeding), with the aid of a portable X-ray apparatus. The obtained radiographs were scanned and bone mineral density means were obtained using software. Bone strength, Seedor index, and dry matter percentage were evaluated and correlated to weight gain during the finishing period (3-13 months of age). Mean values of the evaluated bone quality traits, not previously found in literature, were established. There were no significant differences between males and females in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bones; Bone mineral density; Bone quality; Bone strength; Ostriches.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300005
Registros recuperados: 7
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