Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate
Background: Barium selenate is an inorganic source of selenium (Se) used in prolonged-release preparations to treat selenium deficiency in bovines. Objective: To evaluate serum concentrations of triiodothyronine (T3) and thyroxine (T4) hormones in newborn calves from mothers supplemented with barium...
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2020-09-01
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| Series: | Revista Colombiana de Ciencias Pecuarias |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/rccp/article/view/343748 |
| _version_ | 1797391246267777024 |
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| author | Víctor R. Leyán Ricardo H. Chihuailaf Fernando G. Wittwer |
| author_facet | Víctor R. Leyán Ricardo H. Chihuailaf Fernando G. Wittwer |
| author_sort | Víctor R. Leyán |
| collection | DOAJ |
| description | Background: Barium selenate is an inorganic source of selenium (Se) used in prolonged-release preparations to treat selenium deficiency in bovines. Objective: To evaluate serum concentrations of triiodothyronine (T3) and thyroxine (T4) hormones in newborn calves from mothers supplemented with barium selenate during prepartum. Methods: Six black Frisian pregnant cows were supplemented with barium selenate subcutaneously during the last two months of gestation, until calving. Six cows were used as controls. All cows were subjected to a low Se diet, consisting of hay from natural pasture and commercial concentrate lacking Se. The Se balance was measured through the activity of erythrocyte glutathione peroxidase (GPx). Serum concentration of T3 and T4 in calves was determined by electrochemiluminescence. Results: Se supplementation during prepartum increased GPx activity in cows from day 45 post-supplementation (p<0.05). Calves from supplemented mothers showed higher average serum Se concentration than calves from non-supplemented mothers. The average concentration of T3 in the calves from supplemented mothers was lower in the first hour of life (p<0.05) compared with calves from mothers of the non-supplemented group. A decrease (p<0.05) in T4 serum concentrations was observed in both groups at seven days of age. Conclusions: Administration of barium selenate to cows during prepartum generates a reduction in serum concentration of T3 in the first hour of life of calves. |
| first_indexed | 2024-03-08T23:30:08Z |
| format | Article |
| id | doaj.art-cc9b0ebd271542a5b9f932a68c82c552 |
| institution | Directory Open Access Journal |
| issn | 2256-2958 |
| language | English |
| last_indexed | 2024-03-08T23:30:08Z |
| publishDate | 2020-09-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Colombiana de Ciencias Pecuarias |
| spelling | doaj.art-cc9b0ebd271542a5b9f932a68c82c5522023-12-14T15:28:47ZengUniversidad de AntioquiaRevista Colombiana de Ciencias Pecuarias2256-29582020-09-0134214515310.17533/udea.rccp.v34n2a0341198Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenateVíctor R. Leyán0Ricardo H. Chihuailaf1Fernando G. Wittwer2Austral University of ChileAustral University of ChileAustral University of ChileBackground: Barium selenate is an inorganic source of selenium (Se) used in prolonged-release preparations to treat selenium deficiency in bovines. Objective: To evaluate serum concentrations of triiodothyronine (T3) and thyroxine (T4) hormones in newborn calves from mothers supplemented with barium selenate during prepartum. Methods: Six black Frisian pregnant cows were supplemented with barium selenate subcutaneously during the last two months of gestation, until calving. Six cows were used as controls. All cows were subjected to a low Se diet, consisting of hay from natural pasture and commercial concentrate lacking Se. The Se balance was measured through the activity of erythrocyte glutathione peroxidase (GPx). Serum concentration of T3 and T4 in calves was determined by electrochemiluminescence. Results: Se supplementation during prepartum increased GPx activity in cows from day 45 post-supplementation (p<0.05). Calves from supplemented mothers showed higher average serum Se concentration than calves from non-supplemented mothers. The average concentration of T3 in the calves from supplemented mothers was lower in the first hour of life (p<0.05) compared with calves from mothers of the non-supplemented group. A decrease (p<0.05) in T4 serum concentrations was observed in both groups at seven days of age. Conclusions: Administration of barium selenate to cows during prepartum generates a reduction in serum concentration of T3 in the first hour of life of calves.https://revistas.udea.edu.co/index.php/rccp/article/view/343748barium selenatebovinecalvescowsglutathione peroxidasemineral nutritionseleniumsupplementationthyroid hormonesthyroxinetriiodothyronine |
| spellingShingle | Víctor R. Leyán Ricardo H. Chihuailaf Fernando G. Wittwer Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate Revista Colombiana de Ciencias Pecuarias barium selenate bovine calves cows glutathione peroxidase mineral nutrition selenium supplementation thyroid hormones thyroxine triiodothyronine |
| title | Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate |
| title_full | Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate |
| title_fullStr | Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate |
| title_full_unstemmed | Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate |
| title_short | Serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate |
| title_sort | serum concentration of thyroxine and triiodothyronine in newborn calves from cows supplemented with barium selenate |
| topic | barium selenate bovine calves cows glutathione peroxidase mineral nutrition selenium supplementation thyroid hormones thyroxine triiodothyronine |
| url | https://revistas.udea.edu.co/index.php/rccp/article/view/343748 |
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