Beta-Carotene and Vitamin A Content in Blood Plasma and the Liver of Slaughter Buffaloes in Different Seasons of the Year in Ahvaz (Iran)
ABSTRACT Vitamin A is one of the most important fat-soluble vitamins. Because of its particular role in different tissues and organs, in deficiency conditions various clinical signs are seen. In addition sometimes the marginal deficiency is present and clinical signs are not visible but performance defects such as infertility is seen. In some regions of Iran, buffalo is breading for production of milk and meat. In large animal, much study about beta-carotene and vitamin A is done in cow and information about buffalo is little. In present study, seasonal changes of vitamin A and beta-carotene in serum and liver of 120 buffaloes was investigated in Ahvaz slaughterhouse (Iran), between May 1998-April 1999. We, also, selected animals from 2 sexes and divided them to the 5 age groups ( less than 2 , 2-3 , 3-4, 4-5 and more than 5 yrs old). Spectrophotometery was used for measuring vitamin A and beta-carotene. The results were analyzed statistically with multifactorial repeated measures ( ANOVA) and Pearson's correlations. Results showed that the values of mean of serum and liver vitamin A and serum and liver beta-carotene. (69.01 ± 2.23 µg/dl, 111.99 ± 6.42 µg/gr 21.43 ± 2.21 µg/dl, 23.19 ± 2.23 µg/gr respectively) are similar to normal ranges in cows. These values in different seasons, age groups and 2 sexes were normal, too. There wasn't significant difference between vitamin A and beta- carotene values of the serum and livers for both the 2 sexes and age groups. We couldn't find any similar study about the effect of sex and age groups on vitamin A and betacarotene content in Buffalo. Rather, these findings are not in accordance with the results of previous studies in cow. However, the was significant seasonal variations in serum vitamin A ( max in autumn and min in spring) and liver vitamin A ( max in spring and min in winter). The difference between seasons serum vitamin A is similar to those reported in similar studies performed in Yugoslavia. There wasn't significant difference between different seasons serum and liver beta carotene .
Full-textDOI: · Available from: Mohammad razi jalali, Jan 18, 2015
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ABSTRACT: BACKGROUND: Vitamin A which is found in different tissues and organs plays a particular role in detecting clinical signs in various deficiency conditions. However, sometimes the marginal deficiency is present in a way that clinical signs are not visible but performance defects, such as infertility is seen. OBJECTIVES: In this study, the normal baseline levels of vitamin Aand β-carotene in clinically healthy camels (Camelus dromedarius) in the Yazd province were investigated. METHODS: A total of 168 Iranian camels of both sexes were sampled from February 2009 to July 2010. Spectrophoto-metry was used for measuring the serum values. RESULTS: The mean±SE concentration of vitamin Aand β- carotene were 63.9±4.7 and 9±1.1 μg/dL, respectively. Although, the β-carotene concentr-ation was significantly higher in summer, vitamin Awas not influenced by season. No significant difference in the serum levels of the measured parameters was observed in different ages and sexes. CONCLUSIONS: The results of this study, for the first time, indicate the concentration of vitamin A and β- carotene in the camels in Iran. This finding can be used as a reference guide for evaluation of the deficiency or excess of vitamin Aand β- carotene in camels in Iran. Furthermore, due to the lower levels of vitamin A and β-carotene in Iranian dromedaries during winter, supplementary feeding of vitamin A is recommended during this season.