Suplementação de selênio e vitamina E sobre a contagem de células somáticas no leite de vacas da raça Holandesa

Paschoal, Juliana Jorge; Zanetti, Marcus Antônio; Cunha, José Aparecido da

doi:10.1590/s1516-35982003000800029

Cited by 12 publications

(12 citation statements)

References 12 publications

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“…The SCC of healthy animals is presented by around 300,000 cells/mL being that values above these indicate health and hygienic milk problems (FONSECA;SANTOS, 2000). The main factor that affects the SCC is the presence of infection in the mammary gland (mastitis) that occurs by the invasion of micro-organisms (SANTOS, 2003), which results in the increase of the animal defense cells in the milk (somatic cells) (PASCHOAL;ZANETTI;CUNHA , 2003).…”

Section: Discussionmentioning

confidence: 99%

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Milk quality of properties with different technological standards

Roza¹,

Lopes²,

Simioni³

et al. 2015

Biosci. J.

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ABSTRACT:This study aimed to assess the parameters of milk quality of properties with different technological standards. Twenty five properties were analyzed from 7 countries from the West of Santa Catarina, and classified according to production technologies (feeding, breeding and management practices in general), capital used in the activity, technological standard of machinery, equipment and infrastructure. Ten properties were classified as low technological standard, 8 intermediate standard and 7 high technological standard. The milk's quality data of each property (fat, protein, somatic cell count (SCC) and total bacterial count (TBC)) were supplied by dairy products, being used the average of the months of February, March and April of 2013. The data was subjected to multivariate statistical analysis and variance. It was found that the properties of low technological standard had higher fat content in milk, followed by intermediate and high standard which didn't differ. The protein contents were higher in the properties of low standard with relation to intermediate standard, being that the high-tech standard didn't differ from the other groups. With regard to TBC, the properties of low-tech showed higher values when compared to the other groups, while the SCC did not differ between the different technological standards. We concluded that the technological standard of the properties influenced the parameters of protein, fat and TBC, being that in according with increased of the level of technological of properties, there was a decrease in these parameters, except that SCC didn't show the same behavior, not being influenced by technological standards. The percentage variations in milk protein and fat were explained by racial pattern of the animals and the amount of concentrate supplied to the animals. The TBC was influenced by the milking hygiene practices, such as milking system's pre-disinfection and the use of hot water in the sanitation of the equipment.

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Section: Discussionmentioning

confidence: 99%

“…The mug test is one of the most used methods in the diagnosis of clinical mastitis, because this changes occur visible characteristics of milk secretion (PASCHOAL;ZANETTI;CUNHA , 2003). This explains the greater use of this practice by the properties that had high SCC.…”

Section: Discussionmentioning

confidence: 99%

Milk quality of properties with different technological standards

Roza¹,

Lopes²,

Simioni³

et al. 2015

Biosci. J.

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“…Esta enzima está envolvida no sistema antioxidante do organismo, que neutraliza a produção excessiva de peróxidos e radicais livres, responsáveis pelo estresse oxidativo (MILLER et al, 1993;BRZEZINSKA-SLEBODZINSKA et al, 1994;NOCKELS, 1996). No período periparturiente, menor frequência das infecções intrauterinas e na glândula mamária têm sido relacionadas com a suplementação de Se e vitamina E. Na lactação, a maior incidência de alta contagem de células somáticas tem sido relacionada com a deficiência de Se (JUKOLA et al, 1996;PASCHOAL et al, 2003).…”

Section: Indicadores Do Status Metabólico Do Selêniounclassified

Fontes orgânicas e inorgânicas de selênio na nutrição de vacas leiteiras: digestão, absorção, metabolismo e exigências

Gierus¹

2007

Cienc. Rural

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“…In addition, many studies point to a reduction in the incidence of mastitis with selenium (Se) supplementation, an idea reinforced by the negative correlation between somatic cell count (SCC) and the Se status of the animals (Hogan et al 1993, Paschoal et al 2003, Kruze et al 2007, Sánchez et al 2007, Salman et al 2009, Cortinas et al 2010. Most of the studies that investigated the effect of Se on immune function only compared animals with a low Se status to those with an adequate Se status.…”

Section: Introductionmentioning

confidence: 99%

Efeito da suplementação in vitro de selênio sobre neutrόfilos do leite e sanguíneos em vacas leiteras

Souza¹,

Blagitz²,

Latorre³

et al. 2012

Pesq. Vet. Bras.

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The study was designed to assess the effects of in vitro selenium addition on intracellular hydrogen peroxide production by neutrophils from the milk and blood of dairy cows. Blood from 10 dairy cows and 20 milk samples from ϐive dairy cows were incubated with 0 mg (control) or 10μM of sodium selenite. Then, milk and blood neutrophils were submitted for evaluation of intracellular hydrogen peroxide production by ϐlow cytometry using 2',7'-dichloroϐluorescein diacetate as a probe. The selenium status of the animals was evaluated by determination of the blood glutathione peroxidase activity. The results of the present work showed that in vitro selenium supplementation leads to an enhancement in intracellular hydrogen peroxide production, which indicates an improvement in the bactericidal effects of blood and milk neutrophils even in cows with a selenium-adequate status. Thus, the present study showed that in vitro Se supplementation leads to an enhancement in intracellular hydrogen peroxide production, indicating an improvement in the bactericidal effects of blood and milk neutrophils in cows with Se-adequate status. A determinação da produção intracelular de peróxido de hidrogênio se deu por citometria de ϐluxo através da utilização do 2´,7´ diclorodihidroϐluoresceína diacetato como sonda. A mensuração do conteúdo de selênio foi avaliada pela atividade da glutationa peroxidase eritrocitária. Os leucócitos polimorfonucleares tanto sanguíneos quanto do leite apresentaram signiϐicativo aumento na produção intracelular de H 2 O 2 com a suplementação in vitro de selênio. Desta forma, o presente estudo apontou para aumento da produção intracelular de H 2 O 2 , indicando aumento da capacidade microbicida dos leucócitos polimorfonucleares sanguíneos e lácteos mesmo em animais com níveis adequados de selênio.

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Suplementação de selênio e vitamina E sobre a contagem de células somáticas no leite de vacas da raça Holandesa

Cited by 12 publications

References 12 publications

Milk quality of properties with different technological standards

Milk quality of properties with different technological standards

Fontes orgânicas e inorgânicas de selênio na nutrição de vacas leiteiras: digestão, absorção, metabolismo e exigências

Efeito da suplementação in vitro de selênio sobre neutrόfilos do leite e sanguíneos em vacas leiteras

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