Influence of Vitamin D3, 1α-Hydroxyvitamin D3, and 1,25-Dihydroxyvitamin D3 on Eggshell Quality, Tibia Strength, and Various Production Parameters in Commercial Laying Hens

Frost, T. J.; Roland, D. A.; Untawale, G. G.

doi:10.3382/ps.0692008

Cited by 48 publications

(23 citation statements)

References 18 publications

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“…Similar results were reported by Frost & Roland (1990) using increasing levels of vitamin D 3 (0; 500; 1,000 and 1,500 UCI/kg). Those authors verified increase in eggs production and feed intake when the level of vitamin D 3 increased in the feed.…”

Section: Resultssupporting

confidence: 88%

Effect of supplementation of diets for quails with vitamins A, D and E on performance of the birds and quality and enrichment of eggs

et al. 2011

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-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 chromatography method. Vitamins supplementation did not improve productive performance neither the internal and external quality of the eggs, except for vitamin D supplementation, which increased intake.Incorporation of vitamin A in yolk increased 536.27% at level 30,000 UI/kg, vitamin D increased 13.43% at 1,500 UI/kg and vitamin E increased 479.05% at 600 UI/kg, and these results evidence that the nutritional value of eggs, related to vitamins, can be increased through supplementation of diets for quails.Key Words: cholecalciferol, Coturnix corturnix japonica, retinol, tocopherol Efeito da suplementação de dieta de codornas com vitaminas A, D e E sobre o desempenho das aves e a qualidade e o enriquecimento dos ovosRESUMO -Objetivou-se nesta pesquisa avaliar o desempenho das aves e a qualidade e o enriquecimento de ovos de codornas sob suplementação com vitaminas A, D e E. Foram realizados três experimentos, um para cada vitamina, em delineamentos inteiramente casualizados, com seis repetições e oito aves por parcela, totalizando 192 codornas. O desempenho das aves foi avaliado pelo consumo diário de ração, peso dos ovos, porcentagem de postura e conversão alimentar, por kg e dúzia de ovos. Também foram avaliadas a qualidade interna (unidade Haugh, índice gema e porcentagens de gema e albúmen) e externa (porcentagem de casca, peso específico, espessura e peso da casca) e a concentração das vitaminas na gema dos ovos, mediante o método de cromatografia líquida de alta eficiência. A suplementação das vitaminas não melhorou o desempenho produtivo nem a qualidade interna e externa dos ovos, com exceção da suplementação de vitamina D, que elevou o consumo. A incorporação de vitamina A na gema aumentou 536,27% no nível de 30.000 UI/kg, a de vitamina D 13,43% no nível de 1.500 UI/kg e a de vitamina E 479,05% no nível de 600 UI/kg, e isso evidencia que o valor nutricional dos ovos, relacionado à vitamina, pode ser aumentado com a suplementação na dieta das codornas.Palavras-chave: colecalciferol, Coturnix coturnix japonica, retinol, tocoferol Revista Brasileira de Zootecnia

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Section: Resultssupporting

confidence: 88%

Effect of supplementation of diets for quails with vitamins A, D and E on performance of the birds and quality and enrichment of eggs

et al. 2011

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“…In contrast, Frost et al (1990) reported that l,25(OH) 2 D 3 may have an effect on increasing bone mass in laying hens. Values of physical parameters of bones in chickens fed on the diet with the addition of phytase were higher than in the control, which is in agreement with reports of other authors (Perney et al, 1993;Qian et al, 1996;Puzio et al, 2000).…”

Section: Resultsmentioning

confidence: 83%

The effects of dietary phytase and 1,25(OH)<sub>2</sub>D<sub>3</sub> on growth and strength of bones in broiler chickens at day 21 of life

Puzio¹,

Bieńko²,

Radzki³

2001

J. Anim. Feed Sci.

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The investigation was carried out on 90 broiler chickens receiving experimental low-phosphorus starter diets until day 21 of life: C, control; D, with the addition of 750 phytase units/kg; and R, without vitamin D 3 supplemented with 3 jig l,25(OH) 2 D 3 and 750 PTU/kg. On day 21,15 chickens from each treatment were killed. Humeri and femora were isolated, weighed and physical and geometrical parameters of bones were determined. Bone mass and length in both experimental groups were similar, but showed greater values in relation to controls. The femora and humeri of control and experimental chickens showed significant differences in physical parameters. The values of geometrical parameters in the experimental group were higher than in the control, but not significantly in either of the experimental groups. Bone breaking strength was significantly affected by the combined addition of l,25(OH) 2 D 3 and phytase to the diet without vitamin D 3 as compared with the diet with phytase and adequate level of vitamin D 3 .

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“…Improvement of dietary calcium and phosphorus utilisation by 1,25(OH) 2 D 3 in the form of dietary SG has been already demonstrated in laying hens (Frost and Roland, 1990).…”

Section: Laying Hensmentioning

confidence: 93%

Scientific Opinion on the safety ofSolanum glaucophyllumstandardised leaves as feed material

Feed¹

2015

EFSA Journal

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Solanum glaucophyllum standardised leaves (PAN) is a mixture of irradiated Solanum glaucophyllum ground leaves and wheat middlings to ensure a concentration of minimum 10 mg glycosylated 1,25-dihydroxycholecalciferol/kg feedingstuff. Glycosylation of the vitamin molecule affected biopotency in poultry and rats, but not in ruminants. Up to 1 000 mg PAN/kg complete diet was considered safe for chickens and piglets. PAN concentrations meeting the chicken's requirement for vitamin D in diets without supplemental vitamin D 3 could not be established. No evidence for an improvement of zootechnical parameters by PAN in diets already supplemented with vitamin D 3 was provided for chickens, laying hens and piglets. In dairy cows, PAN had the potential to be efficacious in the prevention of milk fever. However, a feeding regime ensuring its safe use at efficacious doses has not yet been established. No data on safety and efficacy of PAN for other animal species and categories were provided. A water-soluble extract of Solanum glaucophyllum was not genotoxic. A no observed adverse effect level could be not derived from sub-acute toxicity studies in rabbits. A benchmark dose lower confidence limit (BMDL 05 ) based on an increase in plasma calcium in a 28-day repeat dose rat study corresponded to 2 900-3 500 mg PAN/kg diet. Maternal toxicity and fetotoxicity were observed in rats and rabbits at all extract doses tested. An overall safe dose of PAN was not identified from the available toxicological data in laboratory animals. Since PAN did not increase the concentration of 1,25-dihydroxycholecalciferol in animal tissues, the use of PAN in animal nutrition is safe for consumers. Inhalation of PAN could be hazardous. PAN was not irritant to skin and eyes and unlikely to cause skin sensitisation. Considering the content of 1,25-dihydroxycholecalciferol in PAN its use in animal nutrition would not pose a risk to the environment. SUMMARYFollowing a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety of leaves of Solanum glaucophyllum (SG) as feed material. The scientific opinion should cover, in particular, the content of glycosides of 1,25-dihydroxycholecalciferol in the ground leaves and the supply with and the physiology of vitamin D in the target species.In the view of the EFSA FEEDAP Panel, Solanum glaucophyllum standardised leaves (PAN) was a compound feed. It consisted of a mixture of irradiated Solanum glaucophyllum ground leaves and wheat middlings to ensure a concentration of minimum 10 mg glycosylated 1,25-dihydroxycholecalciferol (1,25(OH) 2 D 3 )/kg feedingstuff.Glycosylation of the vitamin molecule affected biopotency in poultry and rats, but not in ruminants.The species-related differences in biopotency of glycosylated 1,25(OH) 2 D 3 prevented the setting of a universal vitamin D bioequivalence of PAN in terms of international units.Based on the limited number of endpoints, up to 1 000 mg...

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Influence of Vitamin D3, 1α-Hydroxyvitamin D3, and 1,25-Dihydroxyvitamin D3 on Eggshell Quality, Tibia Strength, and Various Production Parameters in Commercial Laying Hens

Cited by 48 publications

References 18 publications

Effect of supplementation of diets for quails with vitamins A, D and E on performance of the birds and quality and enrichment of eggs

Effect of supplementation of diets for quails with vitamins A, D and E on performance of the birds and quality and enrichment of eggs

The effects of dietary phytase and 1,25(OH)<sub>2</sub>D<sub>3</sub> on growth and strength of bones in broiler chickens at day 21 of life

Scientific Opinion on the safety ofSolanum glaucophyllumstandardised leaves as feed material

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