Utilization of Alfalfa Carotene and Vitamin a by Growing Chicks

Parrish, D.B.; Zimmerman, Ray A.; Sanford, P. E.; Hung, Eleanor

doi:10.1093/jn/79.1.9

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…The results presented justify in not concluding from their data whether the increased pigmentation of egg yolks due to EQ was caused by improved stability of xanthophyll in the digestive tract and blood stream or during storage of the feed. Moreover, these results are similar to those of Parrish et al (1963), who reported that this antioxidant did not improve carotene utilization from alfalfa meal. On the other hand, Anjaneylu et al (1963) attributed significant biological activity to EQ with regard to egg yolk pigmentation, counteracting a 10% to 20% in vivo loss.…”

Section: Discussionsupporting

confidence: 90%

“…Our observation that XU from good quality alfalfa does not appear to differ from that of inferior alfalfa (Table 5), corresponds to the results of Parrish et al (1963) with regard to the availability of carotene from high and low quality alfalfa meal, and those of Bartov and Bornstein (unpublished data) as far as XU from high and low quality com is concerned.…”

Section: Discussionsupporting

confidence: 85%

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Studies on Egg Yolk Pigmentation

Bartov

Bornstein

1966

Poultry Science

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 85%

Studies on Egg Yolk Pigmentation

Bartov

Bornstein

1966

Poultry Science

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“…Bartov and Bornstein (1966) did not observe any significant difference in xanthophyll utilization of properly stored and adversely stored alfalfa meal samples prepared from the same source. Parrish et al (1963) did not observe any difference in (3-carotene utilization from alfalfa meals having high or low carotene content, and Hall et al (1966) obtained the same xanthophyll utilization from four different dehydrated alfalfa meals even though their xanthophyll contents ranged from 175 to 401 mg/kg.…”

Section: Discussionmentioning

confidence: 76%

Variation in the Biological Availability of Xanthophyll Within and Among Generic Sources

Middendorf¹,

Childs²,

Cravens³

1980

Poultry Science

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Xanthophyll depleted, fasted broilers were intubated with various xanthophyll sources in a series of six experiments. The increase in serum xanthophyll per milligram xanthophyll intubated per kilogram body weight was used to estimate exahtnophyll availability. Statistically significant differences among samples within and among generic sources were obtained. As a result, beta-apo-8'-carotenoic acid ethyl ester (apo-EE) was used as a reference standard in Experiments 4 to 6. When the availability of apo-EE was given a relative value of 100, the availability of xanthophyll from corn gluten meal ranged from 47.7 to 89.1% (four samples), from dehydrated alfalfa, 34.6 to 65.4% (eight samples), and from Coastal Bermudagrass, 18.8 to 27.9% (three samples).

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Utilisation, by chicks, of carotene from fresh and dried plant sources

1969

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Some factors (autoclaving, addition of ethoxyquin, drying, degree of grinding) influencing utilisation of carotene from plant origin were investigated. Low storage of vitamin A in liver and low excretion of carotene in faeces, when fresh lucerne was given, indicated that carotene‐destroying enzymes of plant origin are likely to act before the lucerne is eaten and while it is passing through the intestines. Addition of ethoxyquin to autoclaved lucerne improved the utilisation of carotene. This indicates nonenzymic oxidation of carotene in the digestive tract. Carotene was more effectively utilised from lucerne meal than when given as green lucerne even if autoclaved and with ethoxyquin added. It seems that the influence of non‐enzymic factors on the availability of carotene from various dried plants is small and uniform, because carotene was utilised equally from these sources. The particle size (degree of grinding) had no significant influence on the utilisation of carotene from lucerne meal and it seemed that coarser meals could be used without hindering the utilisation of carotene or other carotenoids by chicks.

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Utilization of Alfalfa Carotene and Vitamin a by Growing Chicks

Cited by 9 publications

References 7 publications

Studies on Egg Yolk Pigmentation

Studies on Egg Yolk Pigmentation

Variation in the Biological Availability of Xanthophyll Within and Among Generic Sources

Utilisation, by chicks, of carotene from fresh and dried plant sources

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