Effects of vitamins A and E supplementation on vitamins A and E status of blood plasma, liver and tail fat of fat-tailed sheep

A. Asadian, M. Mézes

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3 Citations (Scopus)

Abstract

Ram lambs of two Iranian fat-tailed genotypes, Shal (4-6 months) and Sanjabi (6-9 months) were used in experiments for 95 days. They were assigned (25 lambs per breed) into five groups for each breed to receive basal diet plus different levels of vitamins A and E supplementation. The vitamin A groups received 50 or 100 IU vitamin A per kg BW and vitamin E groups received 15 or 30 IU vitamin E per kg diet; the fifth group served as control. Blood plasma, liver and tail fat samples were taken at the beginning and at the end of experiments. Retinol and α-tocopherol concentrations of the samples were determined by high performance liquid chromatography. The highest level of vitamin A application increased the retinol of blood plasma (P <0.01) and liver (P <0.05) of Shal sheep. The application showed negative correlations to retinol content of tail fat in Shal (P <0.01) and Sanjabi breeds (P <0.05). The vitamin E application increased the α-tocopherol content of blood plasma in Shal (P <0.01) and Sanjabi (P <0.001) breeds as well as of liver in the Sanjabi breed (P <0.01). The increase was also significant for the tail fat of Shal (P <0.01) and Sanjabi breeds (P <0.05). As the result of the antagonistic effect of vitamin A on vitamin E status, α-tocopherol concentrations decreased in blood plasma (P <0.001), liver (P <0.01) and tail fat (P <0.001) of both breeds as an effect of vitamin A supply. On the other hand vitamin E supplementation moderately decreased the retinol content of blood plasma ( P <0.05) in the Shal breed, at the highest level of application but the retinol content of liver tissue increased in the Shal breed (P <0.01). Vitamin E application increased the retinol content of tail fat of the breeds, as compared to initial values (P <0.05). It was concluded that Shal showed a higher response to vitamin A supplementation and Sanjabi for vitamin E. Therefore different fat-tailed breeds may demand different vitamins A and E supplementation. Concentration of α-tocopherol in blood plasma was a good indicator of vitamin E status in fat-tailed sheep. The sparing effect of vitamin E on retinol status was found in the liver of Shal breed only, but both genotypes showed that effect in tail fat. Tail fat seems to be an active tissue for storage of α-tocopherol but not for retinol at the dose which was used in this study.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalSmall Ruminant Research
Volume23
Issue number1
DOIs
Publication statusPublished - Nov 1996

Fingerprint

blood plasma
Vitamin A
Vitamin E
vitamin A
vitamin E
Tail
Sheep
tail
Fats
sheep
liver
Liver
lipids
breeds
Tocopherols
tocopherols
lambs
Genotype
Diet
genotype

Keywords

  • Fat-tail
  • Retinol
  • Sheep
  • Tocopherol

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

@article{595d39a6d09a4a2d8041356cf8767c9d,
title = "Effects of vitamins A and E supplementation on vitamins A and E status of blood plasma, liver and tail fat of fat-tailed sheep",
abstract = "Ram lambs of two Iranian fat-tailed genotypes, Shal (4-6 months) and Sanjabi (6-9 months) were used in experiments for 95 days. They were assigned (25 lambs per breed) into five groups for each breed to receive basal diet plus different levels of vitamins A and E supplementation. The vitamin A groups received 50 or 100 IU vitamin A per kg BW and vitamin E groups received 15 or 30 IU vitamin E per kg diet; the fifth group served as control. Blood plasma, liver and tail fat samples were taken at the beginning and at the end of experiments. Retinol and α-tocopherol concentrations of the samples were determined by high performance liquid chromatography. The highest level of vitamin A application increased the retinol of blood plasma (P <0.01) and liver (P <0.05) of Shal sheep. The application showed negative correlations to retinol content of tail fat in Shal (P <0.01) and Sanjabi breeds (P <0.05). The vitamin E application increased the α-tocopherol content of blood plasma in Shal (P <0.01) and Sanjabi (P <0.001) breeds as well as of liver in the Sanjabi breed (P <0.01). The increase was also significant for the tail fat of Shal (P <0.01) and Sanjabi breeds (P <0.05). As the result of the antagonistic effect of vitamin A on vitamin E status, α-tocopherol concentrations decreased in blood plasma (P <0.001), liver (P <0.01) and tail fat (P <0.001) of both breeds as an effect of vitamin A supply. On the other hand vitamin E supplementation moderately decreased the retinol content of blood plasma ( P <0.05) in the Shal breed, at the highest level of application but the retinol content of liver tissue increased in the Shal breed (P <0.01). Vitamin E application increased the retinol content of tail fat of the breeds, as compared to initial values (P <0.05). It was concluded that Shal showed a higher response to vitamin A supplementation and Sanjabi for vitamin E. Therefore different fat-tailed breeds may demand different vitamins A and E supplementation. Concentration of α-tocopherol in blood plasma was a good indicator of vitamin E status in fat-tailed sheep. The sparing effect of vitamin E on retinol status was found in the liver of Shal breed only, but both genotypes showed that effect in tail fat. Tail fat seems to be an active tissue for storage of α-tocopherol but not for retinol at the dose which was used in this study.",
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author = "A. Asadian and M. M{\'e}zes",
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T1 - Effects of vitamins A and E supplementation on vitamins A and E status of blood plasma, liver and tail fat of fat-tailed sheep

AU - Asadian, A.

AU - Mézes, M.

PY - 1996/11

Y1 - 1996/11

N2 - Ram lambs of two Iranian fat-tailed genotypes, Shal (4-6 months) and Sanjabi (6-9 months) were used in experiments for 95 days. They were assigned (25 lambs per breed) into five groups for each breed to receive basal diet plus different levels of vitamins A and E supplementation. The vitamin A groups received 50 or 100 IU vitamin A per kg BW and vitamin E groups received 15 or 30 IU vitamin E per kg diet; the fifth group served as control. Blood plasma, liver and tail fat samples were taken at the beginning and at the end of experiments. Retinol and α-tocopherol concentrations of the samples were determined by high performance liquid chromatography. The highest level of vitamin A application increased the retinol of blood plasma (P <0.01) and liver (P <0.05) of Shal sheep. The application showed negative correlations to retinol content of tail fat in Shal (P <0.01) and Sanjabi breeds (P <0.05). The vitamin E application increased the α-tocopherol content of blood plasma in Shal (P <0.01) and Sanjabi (P <0.001) breeds as well as of liver in the Sanjabi breed (P <0.01). The increase was also significant for the tail fat of Shal (P <0.01) and Sanjabi breeds (P <0.05). As the result of the antagonistic effect of vitamin A on vitamin E status, α-tocopherol concentrations decreased in blood plasma (P <0.001), liver (P <0.01) and tail fat (P <0.001) of both breeds as an effect of vitamin A supply. On the other hand vitamin E supplementation moderately decreased the retinol content of blood plasma ( P <0.05) in the Shal breed, at the highest level of application but the retinol content of liver tissue increased in the Shal breed (P <0.01). Vitamin E application increased the retinol content of tail fat of the breeds, as compared to initial values (P <0.05). It was concluded that Shal showed a higher response to vitamin A supplementation and Sanjabi for vitamin E. Therefore different fat-tailed breeds may demand different vitamins A and E supplementation. Concentration of α-tocopherol in blood plasma was a good indicator of vitamin E status in fat-tailed sheep. The sparing effect of vitamin E on retinol status was found in the liver of Shal breed only, but both genotypes showed that effect in tail fat. Tail fat seems to be an active tissue for storage of α-tocopherol but not for retinol at the dose which was used in this study.

AB - Ram lambs of two Iranian fat-tailed genotypes, Shal (4-6 months) and Sanjabi (6-9 months) were used in experiments for 95 days. They were assigned (25 lambs per breed) into five groups for each breed to receive basal diet plus different levels of vitamins A and E supplementation. The vitamin A groups received 50 or 100 IU vitamin A per kg BW and vitamin E groups received 15 or 30 IU vitamin E per kg diet; the fifth group served as control. Blood plasma, liver and tail fat samples were taken at the beginning and at the end of experiments. Retinol and α-tocopherol concentrations of the samples were determined by high performance liquid chromatography. The highest level of vitamin A application increased the retinol of blood plasma (P <0.01) and liver (P <0.05) of Shal sheep. The application showed negative correlations to retinol content of tail fat in Shal (P <0.01) and Sanjabi breeds (P <0.05). The vitamin E application increased the α-tocopherol content of blood plasma in Shal (P <0.01) and Sanjabi (P <0.001) breeds as well as of liver in the Sanjabi breed (P <0.01). The increase was also significant for the tail fat of Shal (P <0.01) and Sanjabi breeds (P <0.05). As the result of the antagonistic effect of vitamin A on vitamin E status, α-tocopherol concentrations decreased in blood plasma (P <0.001), liver (P <0.01) and tail fat (P <0.001) of both breeds as an effect of vitamin A supply. On the other hand vitamin E supplementation moderately decreased the retinol content of blood plasma ( P <0.05) in the Shal breed, at the highest level of application but the retinol content of liver tissue increased in the Shal breed (P <0.01). Vitamin E application increased the retinol content of tail fat of the breeds, as compared to initial values (P <0.05). It was concluded that Shal showed a higher response to vitamin A supplementation and Sanjabi for vitamin E. Therefore different fat-tailed breeds may demand different vitamins A and E supplementation. Concentration of α-tocopherol in blood plasma was a good indicator of vitamin E status in fat-tailed sheep. The sparing effect of vitamin E on retinol status was found in the liver of Shal breed only, but both genotypes showed that effect in tail fat. Tail fat seems to be an active tissue for storage of α-tocopherol but not for retinol at the dose which was used in this study.

KW - Fat-tail

KW - Retinol

KW - Sheep

KW - Tocopherol

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