Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress
Twenty-four dairy cows, with daily average milk production of 18.1 kg, were fed diets containing different selenium (Se) sources. The purpose of this paper is to evaluate the effects of such diets on milk production and quality, on the occurrence of mastitis, and on physiological variables. During t...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2014-02-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/2921 |
| _version_ | 1818109052581838848 |
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| author | Carlos E. Oltramari Maria da G. Pinheiro Mariana S. de Miranda Juliana R.P. Arcaro Lívia Castelani Luciandra M. Toledo Luiz A. Ambrósio Paulo R. Leme Marcelo Q. Manella Irineu Arcaro Júnior |
| author_facet | Carlos E. Oltramari Maria da G. Pinheiro Mariana S. de Miranda Juliana R.P. Arcaro Lívia Castelani Luciandra M. Toledo Luiz A. Ambrósio Paulo R. Leme Marcelo Q. Manella Irineu Arcaro Júnior |
| author_sort | Carlos E. Oltramari |
| collection | DOAJ |
| description | Twenty-four dairy cows, with daily average milk production of 18.1 kg, were fed diets containing different selenium (Se) sources. The purpose of this paper is to evaluate the effects of such diets on milk production and quality, on the occurrence of mastitis, and on physiological variables. During the experimental period (124 days), all the cows received the same diet: a total mixed feed with 0.278 mg.kg- 1 DM of selenium. In the inorganic Se treatment, the selenium source was sodium selenite and in the organic Se treatment the source was selenium yeast (<em>Saccharomyces cerevisiae</em> CNCM I-3060). There were no significant differences in milk yield or in Se concentration in the milk. No significant differences between the treatments were observed in protein, lactose, solids-not-fat andpercentage of total solids. The animals subjected to the organic Se treatment presented higher (P=0.013) percentage of milk fat and lower (P=0.014) somatic cell count (SCC) than those subjected to the inorganic Se treatment. There was no significant difference in subclinical mastitisas determined by the California Mastitis Test (CMT) between the treatments. However, both Se sources reduced the incidence of mastitis (subclinical positive mastitis and strongly positive mastitis) between the pre-experimental and experimental phases. There was no significant difference in rectal temperature (RT) between the treatments. Respiratory frequency (RF) was lower (P=0.027) in the inorganic treatment than in the organic one, whereas haircoat temperature (HT) was lower (P=0.007) in the organic treatment than in the inorganic one. |
| first_indexed | 2024-12-11T02:25:07Z |
| format | Article |
| id | doaj.art-173b0e093c134edcb8d206d3ff72cdcc |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-11T02:25:07Z |
| publishDate | 2014-02-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-173b0e093c134edcb8d206d3ff72cdcc2022-12-22T01:23:56ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2014-02-0113110.4081/ijas.2014.29212199Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stressCarlos E. Oltramari0Maria da G. Pinheiro1Mariana S. de Miranda2Juliana R.P. Arcaro3Lívia Castelani4Luciandra M. Toledo5Luiz A. Ambrósio6Paulo R. Leme7Marcelo Q. Manella8Irineu Arcaro Júnior9Centro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloPólo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Departamento de Descentralização do Desenvovimento, Agência Paulista de Tecnologia dos Agronegócios, São PauloCentro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloCentro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloCentro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloCentro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloCentro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloFaculdade de Zootecnia e Engenharia de Alimentos, Universidade de São PauloAlltech do Brasil, ParanáCentro de Análise e Pesquisa Tecnológica do Agronegócio de Bovinos de Leite, Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, São PauloTwenty-four dairy cows, with daily average milk production of 18.1 kg, were fed diets containing different selenium (Se) sources. The purpose of this paper is to evaluate the effects of such diets on milk production and quality, on the occurrence of mastitis, and on physiological variables. During the experimental period (124 days), all the cows received the same diet: a total mixed feed with 0.278 mg.kg- 1 DM of selenium. In the inorganic Se treatment, the selenium source was sodium selenite and in the organic Se treatment the source was selenium yeast (<em>Saccharomyces cerevisiae</em> CNCM I-3060). There were no significant differences in milk yield or in Se concentration in the milk. No significant differences between the treatments were observed in protein, lactose, solids-not-fat andpercentage of total solids. The animals subjected to the organic Se treatment presented higher (P=0.013) percentage of milk fat and lower (P=0.014) somatic cell count (SCC) than those subjected to the inorganic Se treatment. There was no significant difference in subclinical mastitisas determined by the California Mastitis Test (CMT) between the treatments. However, both Se sources reduced the incidence of mastitis (subclinical positive mastitis and strongly positive mastitis) between the pre-experimental and experimental phases. There was no significant difference in rectal temperature (RT) between the treatments. Respiratory frequency (RF) was lower (P=0.027) in the inorganic treatment than in the organic one, whereas haircoat temperature (HT) was lower (P=0.007) in the organic treatment than in the inorganic one.http://www.aspajournal.it/index.php/ijas/article/view/2921Dairy cow, Selenium yeast, Milk quality and production, Mastitis, Physiological variables |
| spellingShingle | Carlos E. Oltramari Maria da G. Pinheiro Mariana S. de Miranda Juliana R.P. Arcaro Lívia Castelani Luciandra M. Toledo Luiz A. Ambrósio Paulo R. Leme Marcelo Q. Manella Irineu Arcaro Júnior Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress Italian Journal of Animal Science Dairy cow, Selenium yeast, Milk quality and production, Mastitis, Physiological variables |
| title | Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress |
| title_full | Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress |
| title_fullStr | Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress |
| title_full_unstemmed | Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress |
| title_short | Selenium sources in the diet of dairy cows and their effects on milk production and quality, on udder health and on physiological indicators of heat stress |
| title_sort | selenium sources in the diet of dairy cows and their effects on milk production and quality on udder health and on physiological indicators of heat stress |
| topic | Dairy cow, Selenium yeast, Milk quality and production, Mastitis, Physiological variables |
| url | http://www.aspajournal.it/index.php/ijas/article/view/2921 |
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