Compositional profile of ovine milk with a high somatic cell count: A metabolomics approach

Caboni, Pierluigi; Manis, Cristina; Ibba, Ignazio; Contu, Marino; Coroneo, Valentina; Scano, Paola

doi:10.1016/j.idairyj.2017.02.001

Cited by 19 publications

(11 citation statements)

References 36 publications

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“…These fatty acids might be further modified in the mammary gland through the activity of desaturase enzymes (Vlaeminck et al, 2006). It has been suggested that the lower concentrations of these compounds in milk with high SCC may be related to reduced food intake by the sheep (Carboni et al, 2017), as was already observed…”

Section: Identification Of Important Input Variablesmentioning

confidence: 67%

Estimation of somatic cell count levels of hard cheeses using physicochemical composition and artificial neural networks

Hernández-Ramos

Quintana

Revilla

2019

Journal of Dairy Science

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This study addresses the prediction of the somatic cell counts of the milk used in the production of sheep cheese using artificial neural networks. To achieve this objective, the neural network was designed using 33 parameters of the physicochemical composition of the cheeses obtained after they have been matured for 12 mo as input data. The physicochemical analysis of the cheeses revealed that the somatic cell count level of the cheese has a significant influence on the amount of protein, fat, dry extract, and fatty acids. When properly set up, the neural network allows the correct classification of the cheeses (100% of correct results in both training and test phases) and therefore their samples in each of the 3 nominal output variables (low, average, and high somatic cell counts). The fatty composition of the cheeses, individual fatty acids, and fat acidity are the variables that most affect the correct operation of the neural network.

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Section: Identification Of Important Input Variablesmentioning

confidence: 67%

Estimation of somatic cell count levels of hard cheeses using physicochemical composition and artificial neural networks

Hernández-Ramos

Quintana

Revilla

2019

Journal of Dairy Science

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“…They assessed positive effects on milk retinol and alpha-tocopherol contents and cheese volatiles. Although several researches have studied different aspects of ovine milk main composition [1,[8][9][10][11], there is still little information in literature regarding the metabolite profile of sheep's milk [12][13][14], as most of the works focused on cow's milk. One of the most valuable approaches for the investigation of metabolite profiles in a biological system is metabolomics [15].…”

Section: Introductionmentioning

confidence: 99%

“…One of the most valuable approaches for the investigation of metabolite profiles in a biological system is metabolomics [15]. Through the application of a gas chromatography coupled with mass spectrometry (GC-MS) based metabolomic approach, it has been possible to study different metabolic pathways linked to quality and other aspects of milk production [16][17][18][19], such as mastitis [12], diet [20], and ketosis [21]. In this study, by a GC-MS metabolomics approach, the milk metabolite profiles of sheep bred in Sardinia under different feeding systems were investigated in association with measured milk main traits such as fat, proteins, caseins, lactose, and urea.…”

Section: Introductionmentioning

confidence: 99%

An Untargeted Metabolomic Comparison of Milk Composition from Sheep Kept Under Different Grazing Systems

Scano

Carta²,

Ibba³

et al. 2020

Dairy

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This study aimed to evaluate the effects of different feedings on main traits and polar and semi-polar metabolite profiles of ovine milk. The milk metabolome of two groups of Sarda sheep kept under different grazing systems were analyzed by gas chromatography coupled with mass spectrometry (GC-MS) and multivariate statistical analysis (MVA). The results of discriminant analysis indicated that the two groups showed a different metabolite profile, i.e., milk samples of sheep kept under Grazing System 1 (GS1) were richer in nucleosides, inositols, hippuric acid, and organic acids, while milk of sheep under Grazing System 2 (GS2) showed higher levels of phosphate. Statistical analysis of milk main traits indicates that fat content was significantly higher in GS1 samples while milk from GS2 sheep had more urea, trans-vaccenic acid, and rumenic acid. MVA studies of the associations between milk main traits and metabolite profile indicated that the latter reflects primarily the long chain fatty acid content, the somatic cell count (SCC), and lactose levels. All together, these results demonstrated that an integrated holistic approach could be applied to deepen knowledge about the effects of feeding on sheep’s milk composition.

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“…forneceu concentrado com 100 mg/kg de curcumina na dieta de ovelhas leiteiras e esses animais tiveram maior produção de leite, associado a baixos de CCS. Estudos anteriores já comprovam uma relação inversa entre a produção de leite e o CCS, ou seja, quando a produção de leite estiver em alta os níveis de CCS estarão baixos e vice e versa (Martí et al 2013;Caboni et al 2017). As ovelhas do grupo T4 tiveram elevação de CCS no leite, mesmo não alterando a produção, prejudicando assim a qualidade do leite.…”

Section: Discussionunclassified

Aplicação intra-mamária de curcumina em ovelhas com mastite subclínica e ovelhas saudáveis: efeito sobre produção e qualidade do leite

Cécere

Deolindo

Molosse

et al. 2021

RSD

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O objetivo do trabalho foi avaliar o efeito da aplicação intra-mamária de curcumina em ovelhas com mastite subclínica e ovelhas saudáveis sobre produção de leite, qualidade do leite e saúde de ovelhas. Para isso foi realizado dois experimentos: Experimento I: 10 ovelhas com mastite subclínica crônica foram divididas em dois grupos de cinco ovelhas cada: a) controle, foi aplicado 3 mL de óleo mineral via intra-mamária; b) curcumina, aplicado 2 mg de curcumina diluída em óleo mineral via intra-mamária. Houve efeito do tratamento, isto é, ovelhas que receberam a aplicação de curcumina tiveram maior produção de leite. Houve o efeito do tratamento para percentagem de proteína no leite, assim como tendencia de efeito do tratamento para lactose e solidos totais; com destaque para menores níveis de proteína, lactose e sólidos não gordurosos nas ovelhas do grupo curcumina comparado ao controle. Verificamos uma interação entre tratamento versus dia para proteína no leite nos dias 7 e 14 após aplicação; menor no grupo curcumina. Efeito do dia foi verificado para contagem de eritrócitos e leucócitos, assim como a concentrações de hemoglobina em ambos os grupos. Para o experimento II usamos 80 ovelhas divididas em 4 grupos: controle, T2, T3 e T4 (2, 3 e 4 mg de curcumina diluída em óleo mineral via intra-mamaria, respectivamente). Efeito do dia foi observado para o grupo T2, isto é, houve um aumento na produção de leite do dia 1 para 20. A contagem de células somáticas (CCS) sofreu efeito do tratamento, dia e interação entre tratamento versus dia. O maior CCS foi observado no grupo T4. Do grupo de ovelhas, 17 tiveram problemas na glândula mamaria após a aplicação dos quatro tratamentos, sendo que cinco ovelhas desenvolveram uma grave mastite ambiental e morreram; e os demais animais também testaram positivos para mastite subclínica no teste da raquete (Califórnia Mastite Teste). De modo geral, o uso da curcumina via intra-mamaria nas doses testadas não tem efeito curativo, assim como quando usado em ovelhas saudáveis causa efeito negativo, afetando a qualidade do leite (elevou CCS). Além disso, a aplicação de produtos intra-mamários (óleo mineral ou óleo + curcumina) são um risco elevado para o animal; portanto, não recomendamos.

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Compositional profile of ovine milk with a high somatic cell count: A metabolomics approach

Cited by 19 publications

References 36 publications

Estimation of somatic cell count levels of hard cheeses using physicochemical composition and artificial neural networks

Estimation of somatic cell count levels of hard cheeses using physicochemical composition and artificial neural networks

An Untargeted Metabolomic Comparison of Milk Composition from Sheep Kept Under Different Grazing Systems

Aplicação intra-mamária de curcumina em ovelhas com mastite subclínica e ovelhas saudáveis: efeito sobre produção e qualidade do leite

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