Consulta: subjectFacets:"Cholecalciferol"
Registros recuperados: 6
Data/hora: 08/06/2024 01:25:38

Performance, Body Temperature and Egg Quality of Laying Hens Fed Vitamins D and C Under Three Environmental Temperatures
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Faria,DE; Junqueira,OM; Souza,PA; Titto,EAL.
Three experiments were conducted in a climatic chamber to determine the effects of vitamins D3 and C supplementation on performance, body temperature, and egg quality under thermoneutral temperature (24.8º to 27.0º C), a cyclic heat stress (26.2º C for 16 h and 32.1º C for 8 h) and a constant heat stress (30.0º to 32.0º C) for three weeks in each temperature. One hundred forty-four White Leghorn hens aged 31 weeks were used in a completely randomized design with a factorial arrangement of 3 x 3: vitamin D3 (2,500, 3,000, and 3,500 IU/kg) and vitamin C (0, 200, and 400 ppm), with a total of nine treatments with four replicates of four hens each. Parameters measured included feed intake (FI), feed:gain (FG), egg production (EP), egg weight (EW), egg mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbic acid; Cholecalciferol; Egg; Heat stress; Laying hens.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100005

In ovo supplementation of 25(OH)D3 to broiler embryos
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Gonzales,E; Cruz,CP; Leandro,NSM; Stringhini,JH; Brito,AB.
A dose of 0.3 mL of water solution containing 0.00 (control), 0.625, 1.250 or 1.875 µg of 25-hydroxy cholecalciferol (25(OH)D3) was administered to 312 fertile eggs derived from 49-w-old Cobb 500 broiler breeders on the 17th day of incubation (DE17) via allantoic cavity. After treatment, eggs were distributed and maintained until hatching in four incubators set at 37.8 ºC and 55% RH. Each incubator received eggs from all treatments, according to a block design with four treatments of 77-79 replicates each. Hatching was checked every two hours from 484h to 512h of incubation to evaluate productivity and chick qualities. Chicks were housed until 10 days of age in heated battery cages according to a block design with four treatments of 10 replicates of six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cholecalciferol; Embryo; In-ovo supplementation; Vitamin D.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300005

Effect of different vitamin D sources and calcium levels in the diet of layers in the second laying cycle
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Nascimento,GR do; Murakami,AE; Guerra,AFQM; Ospinas-Rojas,IC; Ferreira,MFZ; Fanhani,JC.
This study evaluated the effects of different sources of vitamin D and calcium levels on performance, egg quality and bone strength of hens in the second production cycle. A total of 384 Hy-Line W36 birds with 80 weeks of age were used, alloted into 3 x 4 factorial design (sources of vitamin D: cholecalciferol; 25(OH)D3 and 1.25(OH)2D3 x calcium levels: 2.85, 3.65; 4.45 and 5.25%) with four replicates and eight birds each. The performance was evaluated for three cycles of 28 days each, egg quality was evaluated in the last four days of each cycle and bone strength on the last day of the experimental period. There was no interaction (p &amp;gt; 0.05) between the different sources of vitamin D and calcium levels in all parameters evaluated. There was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholecalciferol; 25 hydroxycholecalciferol; 1.25 dihydroxycholecalciferol.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200005

Effect of supplementation of diets for quails with vitamins A, D and E on performance of the birds and quality and enrichment of eggs
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Marques,Rafael Henrique; Gravena,Rodrigo Antonio; Silva,Janaina Della Torre da; Roccon,Josiane; Picarelli,Juliana; Hada,Fabricio Hirota; Queiroz,Sandra Aidar de; Moraes,Vera Maria Barbosa.
The objective of this research was to evaluate the performance of birds and the quality and enrichment of eggs from quails fed diets supplemented with vitamins A, D and E. Three experiments were performed, one for each vitamin, under completely randomized experimental design, with six replicates and eight birds per plot, totaling 192 quails. Performance of birds was evaluated by the daily feed intake, egg weight, laying percentage (%) and food conversion, per kg and dozen of eggs. It was also evaluated the internal quality (Haugh unit, yolk index and yolk and albumen percentages) and external quality (eggshell percentage, egg specific gravity, eggshell thickness and weight) and the concentration of vitamins in egg yolk by using the high performance liquid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholecalciferol; Coturnix corturnix japonica; Retinol; Tocopherol.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600010

200.000 IU of vitamin D does not reduce resting Blood Pressure and Inhibit Post-Exercise Hypotension in elderly women: a pilot study
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: GONÇALVES,MARIA DA CONCEIÇÃO R.; MIRANDA NETO,MANOEL; CAVALCANTE,ISA G.M.; SEBADELHE,VITTÓRIA R.R.J.; SOUZA,MICHELE F. De; NEVES,JULIANA P.R.; SOUZA,FLAVIA T.L. DE; TAVARES,RENATA L.; COSTA,MATHEUS S.; SILVA,ALEXANDRE S.
Abstract  Given the scarcity of studies with elderly and the existence of studies investigating the effect of vitamin D supplementation in PEH (post exercise hypotension), this study evaluated the effect of a single megadose of vitamin D on resting blood pressure (RBP) and post-exercise hypotension (PEH) in the elderly. 11 hypertensive elderly women (70.3 ± 1.7 years) received a single megadose of 200.000 IU of cholecalciferol or a placebo, orally, through capsules. On day 7, the subjects performed 30 minutes of aerobic exercise with blood pressure measurement before exercise and every 10 minutes after exercise during 60 minutes, besides cardiac autonomic modulation. RBP did not significantly change. Exercise promoted significant systolic PEH only in one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic exercise; Aged; Hypertension; Hypotension; Cholecalciferol.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100903

Body fat and cholecalciferol supplementation in elderly homebound individuals
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Canto-Costa,M.H.S.; Kunii,I.; Hauache,O.M.
Vitamin D deficiency, observed mainly in the geriatric population, is responsible for loss of bone mass and increased risk of bone fractures. Currently, recommended doses of cholecalciferol are advised, but since there are few studies evaluating the factors that influence the serum levels of 25-hydroxyvitamin D (25(OH)D) following supplementation, we analyzed the relationship between the increase in serum 25(OH)D after supplementation and body fat. We studied a group of 42 homebound elderly subjects over 65 years old (31 women) in order to assess whether there is a need for adjustment of the doses of cholecalciferol administered to this group according to their adipose mass. Baseline measurements of 25(OH)D, intact parathyroid hormone and bone remodeling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholecalciferol; Vitamin D insufficiency; Secondary hyperparathyroidism; Obesity; Body fat content.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000100011