Fatty acid, carotenoid and vitamin A composition of tissues of free living gulls

Surai, Peter F.; Royle, Nick J.; Sparks, Nicholas

doi:10.1016/s1095-6433(00)00220-8

Cited by 41 publications

(28 citation statements)

References 37 publications

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“…Retinyl ester and free retinol were determined using the methodology of Furr et al. (1986) with minor modifications as described previously by Surai et al. (2000).…”

Section: Methodsmentioning

confidence: 99%

Effects of different dietary phytase activities on the concentration of antioxidants in the liver of growing broilers

Karadaş

Pirgozliev

Pappas

et al. 2009

Journal of Animal Physiology and Animal Nutrition

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One-hundred and fifty male chickens were used to evaluate the effects of different activities (0, 250, 500, 12 500 FTU/kg) of phytase on their performance and antioxidant concentration in the liver. The chicks were housed in 30 cages and were allocated to six replicates of five dietary treatments. All diets were formulated to be adequate in energy and protein (12.90 MJ/kg metabolizable energy, 214 g/kg crude protein), however, the negative control (NC) was lower in available P compared with the positive control (PC) (2.5 vs. 4.5 g/kg diet). The other three diets were the NC supplemented with phytase at 250, 500 and 12 500 FTU/kg (NC + 250, NC + 500 and NC + 12 500 FTU respectively). The concentration of antioxidants in the liver of the birds was determined using HPLC at 21 days of age. Low P diets (NC) reduced weight gain, however, supplementation with phytase improved weight gain to the extent that it was better than the PC at the 12 500 FTU treatment (p < 0.05). Feed conversion ratio was also improved by the high level of phytase supplement more than other treatments (p < 0.05). Feed consumption was not affected either by dietary phosphorus concentration or by different phytase supplementation. The antioxidant data showed that the unsupplemented diet with low phosphorus (NC) decreased the concentration of coenzyme Q(10) and retinol-linoleate in the liver compared with that of birds on the adequate phosphorus treatment (PC). Phytase supplementation, especially at the higher doses (500 and 12 500 FTU) increased the level of coenzyme Q(10) to the same level as the PC treatment. In addition, the highest dose (12 500 FTU) of phytase increased retinol concentration in the liver of chickens compared with those on the NC treatment. The highest inclusion level of phytase increased the alpha-tocopherol level in the liver compared with the lower levels of phytase (NC + 250 and NC + 500 FTU).

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“…Retinyl ester and free retinol were determined using the methodology of Furr et al. (1986) with minor modifications as described previously by Surai et al. (2000).…”

Section: Methodsmentioning

confidence: 99%

Effects of different dietary phytase activities on the concentration of antioxidants in the liver of growing broilers

Karadaş

Pirgozliev

Pappas

et al. 2009

Journal of Animal Physiology and Animal Nutrition

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“…For example, unlike chicken egg yolks, the egg yolks from several wild birds (gulls, coots, and moorhen) were found to contain high concentrations of BC, about 25–30% of total carotenoids [192]. Gulls were also found to have high concentrations of BC in the liver [193]. On the other hand, Slifka et al [146] measured serum carotenoids in a variety of bird species kept at a zoo and found no detectable serum BC in any of the species studied (included greater flamingo, American flamingo, Mandarin duck, grey gull, scarlet ibis, Inca tern, wood duck, hybrid teal, Hadada ibis, whistling duck, brown pelican, sacred ibis, Humboldt penguin, and Brazilian teal).…”

Section: Species Differences In β-Carotene Metabolismmentioning

confidence: 99%

Meeting the Vitamin A Requirement: The Efficacy and Importance ofβ-Carotene in Animal Species

Green

Fascetti

2016

The Scientific World Journal

109

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Vitamin A is essential for life in all vertebrate animals. Vitamin A requirement can be met from dietary preformed vitamin A or provitamin A carotenoids, the most important of which is β-carotene. The metabolism of β-carotene, including its intestinal absorption, accumulation in tissues, and conversion to vitamin A, varies widely across animal species and determines the role that β-carotene plays in meeting vitamin A requirement. This review begins with a brief discussion of vitamin A, with an emphasis on species differences in metabolism. A more detailed discussion of β-carotene follows, with a focus on factors impacting bioavailability and its conversion to vitamin A. Finally, the literature on how animals utilize β-carotene is reviewed individually for several species and classes of animals. We conclude that β-carotene conversion to vitamin A is variable and dependent on a number of factors, which are important to consider in the formulation and assessment of diets. Omnivores and herbivores are more efficient at converting β-carotene to vitamin A than carnivores. Absorption and accumulation of β-carotene in tissues vary with species and are poorly understood. More comparative and mechanistic studies are required in this area to improve the understanding of β-carotene metabolism.

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“…Vitamins E (a -and g -tocopherol) and A (retinol) and carotenoids were determined by HPLC as previously described (Surai et al, 1996;Surai et al, 2000). Yolk susceptibility to lipid peroxidation was determined as previously described (Surai et al, 1996).…”

Section: Analytical Proceduresmentioning

confidence: 99%

Effect of the mycotoxin aurofusarin on the antioxidant composition and fatty acid profile of quail eggs

Dvorska

Surai²,

Speake³

et al. 2001

British Poultry Science

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1. The effect of the mycotoxin aurofusarin on the antioxidant composition and fatty acid profile of quail eggs was investigated. 2. Thirty eight 45-d-old Japanese quails were divided into two groups (experimental and control, 15 females +4 males in each group) and were fed on a maize-soya diet balanced in all nutrients. The diet of the experimental quails was supplemented with aurofusarin at the level of 26.4 mg/kg feed in the form of Fusarium graminearum culture enriched with aurofusarin. At the beginning and after 2, 4 and 8 week supplementation periods, eggs were collected and analysed. After 8 weeks of supplementation, experimental quails were fed on unsupplemented diet during the next 4 weeks and eggs were collected after 2 and 4 weeks on such a diet and analysed. 3. Aurofusarin caused a significant (P<0.05) decrease in vitamins E, A, total carotenoid, lutein and zeaxanthin concentrations and significantly (P<0.05) increased egg yolk susceptibility to lipid peroxidation. During two weeks on the diet without aurofusarin the levels of carotenoids in the egg yolk returned to the initial level, vitamins A and E returned to the initial level during 4 weeks on the same unsupplemented diet. 4. Dietary supplementation with aurofusarin was associated with a significant (P<0.01) decrease in the docosahexaenoic acid proportion in the phospholipid, cholesteryl ester and free fatty acid fractions of the egg yolk. At the same time the proportion of linoleic acid in the phospholipid, free fatty acid and triacylglycerol fractions significantly (P<0.05) increased. 5. It is concluded that mycotoxin aurofusarin is detrimental to the nutritional quality of eggs.

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Fatty acid, carotenoid and vitamin A composition of tissues of free living gulls

Cited by 41 publications

References 37 publications

Effects of different dietary phytase activities on the concentration of antioxidants in the liver of growing broilers

Effects of different dietary phytase activities on the concentration of antioxidants in the liver of growing broilers

Meeting the Vitamin A Requirement: The Efficacy and Importance ofβ-Carotene in Animal Species

Effect of the mycotoxin aurofusarin on the antioxidant composition and fatty acid profile of quail eggs

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