Correlações entre contagem de células somáticas e parâmetros físico-químicos e microbiológicos de qualidade do leite

Vargas, Diego Prado de; Nörnberg, José Laerte; Mello, Renius; Sheibler, Rudolf Brand; Breda, Fernanda Cristina; Milani, Marceli Pazini

doi:10.1590/1809-6891v15i420637

Cited by 23 publications

(27 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to some researchers, when milk has high CCS values, CBT has a tendency to increase or decrease, since there is no correlation between these variables. This reinforces the different behaviour, considering the microorganisms that cause the inflammation of the mammary gland (Harmon, 1994;Vargas et al, 2014).…”

Section: Resultssupporting

confidence: 72%

“…The content SNG decreases with the elevation of CCS, since it may be associated with the behaviour of lactose. However, the ST content increases with high levels of CCS, which is related to the result that was found for milk fat (Vargas et al, 2014).…”

Section: Resultssupporting

confidence: 70%

“…The increase in the concentration of minerals should not be considered favourable to the quality of the milk, since more noble mineral elements, such as Ca and K, are replaced with other minerals, such as Na + and Cl-, which have less nutritional importance (Neville et al, 1983;Vargas et al, 2014). Santos et al (2015) emphasized that EC can be used to evaluate mastitis, provided fat is taken into account.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Schumacher¹,

Viégas²,

Naetzold³

et al. 2019

SA J. An. Sci.

View full text Add to dashboard Cite

The objective of the present study was to use electrical bioimpedance analysis (BIA) as an alternative method of evaluating the quality of bovine raw milk. Fourteen lactating purebred Dutch cows were used. For the analyses of milk quality and electrical bioimpedance, 140 ml milk per mammary quarter and a homogeneous sample of each animal were collected, totalling 70 samples. The criteria used to evaluate milk quality consisted of somatic cell count (CCS), total bacterial count (CBT), fat, protein, lactose, total solids (ST) and non-greasy solids (SNG) as required by IN No 62/2011. A monofrequential 50 kHz and 800 μA alternating current generator was used for electrical BIAs. The temperature of the raw milk was 5 °C for all samples. Primary resistance and reactance readings were obtained. From these values, the values of impedance, conductance and phase angle were obtained. Correlation analyses were performed to determine the variables used by the regression analyses. The regression analysis was performed using raw milk components as dependent variables and BIA measurements as independent variables. Lactose, ST and SNG were the components of milk that correlated best and presented moderate prediction equations in relation to BIA variables. The prediction equations using resistance showed R2 of 0.42 and 0.45 for ST and SNG, respectively. In the prediction equation for ST and SNG, the conductance resulted in R2 of 0.45, and 0.45, respectively. Regarding impedance, the R2 of 0.42 and 0.45 were obtained for the predicted equations ST and SNG, respectively. Thus, it can be concluded that BIA has the potential to estimate the composition and quality of bovine raw milk.

show abstract

Section: Resultssupporting

confidence: 72%

Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Schumacher¹,

Viégas²,

Naetzold³

et al. 2019

SA J. An. Sci.

View full text Add to dashboard Cite

show abstract

“…There was also an increase in average total solids which can be explained by the increase in fat and protein as part of the construction of total solids (VARGAS et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Electrical conductivity and somatic cell count in zebu cow’s milk

Moura

Rangel

Borba

et al. 2017

SCA

View full text Add to dashboard Cite

The objective was to evaluate the physico-chemical composition, somatic cell count and electrical conductivity of the milk from lactating Zebu cows. For this, monthly milk samples were collected on the official milk control day intended for analysis of electrical conductivity of milk (ECM), somatic cell count (SCC) and milk composition. We used monthly data from 680 controls, from 10 Gyr and 17 Guzerat cows from a herd located in the city of São Gonçalo do Amarante/RN, from August to November 2013. Analyses of variance, mean test and Pearson correlation analysis were conducted. The levels of fat (% F), protein (% P), lactose (% L), total solids (% TS) and non-fat dry extract (% NFDE) were dependent variables for the ECM and SCC. The milk of Gyr cows for ECM, SCC, GOR, PROT, LACT, TS and NFDE were respectively, 3.88±1.18 mS/cm, 1629±2195 thousands cells/mL, 4.71±1.77%, 3.29±0.31%, 4.5±0.33%, 13.5±1.78%, 8.79±0.37%, and for the Guzerat breed 3.59±0.88 mS/cm 1356±1793 thousands cells/mL, 4.47±0.98%, 3.43±0.32%, 4.52±0.24%, 13.5±1.19%, 9.02±0.48%. No significant correlations between SCC and ECM characteristics were observed. However, when the correlation of each of these parameters and milk composition in different classes for each breed was analyzed, a significant correlation of the SCC was observed with the protein and lactose in Gyr, of the ECM with the lactose and SCC with total solids and fat for the Guzerat cows.

show abstract

“…Nesse sentido, todos os arranjos de sistemas de produção com o outono, o sistema altamente especializado no inverno, o semiespecializado no verão e o especializado na primavera tiveram qualidade proteica positiva, destacando-se pelas menores contagens de células somáticas a Introdução O leite brasileiro é produzido com expressiva heterogeneidade de sistemas de produção, incluindo um reduzido número de produtores mais especializados e um elevado número de produtores com intermediária ou nenhuma especialização, diferindo-se principalmente pela produtividade leiteira e pelo manejo nutricional e higiênico-sanitário adotado (1) . É de extrema importância para a cadeia láctea mundial identificar os sistemas de exploração e manejos adotados em rebanhos leiteiros ao longo das estações do ano, que favoreçam a obtenção de um leite de maior qualidade, englobando-se a composição centesimal (gordura, proteína e sólidos totais) e aspectos higiênico-sanitários (contagem de células somáticas e contagem bacteriana total) (2)(3)(4) .…”

Section: Introductionunclassified

Qualidade Físico-Química E Microbiológica Do Leite Bovino Em Diferentes Sistemas De Produção E Estações Do Ano

Vargas

Nörnberg²,

Scheibler

et al. 2019

Ciênc. anim. bras.

Self Cite

View full text Add to dashboard Cite

Qualidade físico-química e microbiológica do leite bovino em diferentes sistemas... combinação entre a estação primavera e o sistema semiespecializado de produção. Palavras-chave: análise multivariada, análise de componentes principais, qualidade do leite, tipologia, unidades produtoras de leite. AbstractThe objective of this work was to evaluate the effect of the interaction between production systems and seasons on physical-chemical and microbiological qualities of bovine milk. Three farms were assessed monthly, along the seasons, for four specialization levels of the production systems: highly specialized, specialized, partially specialized, and non-specialized. In terms of milk quality, the levels of fat, protein, total solids, somatic cell count, total bacterial count, titratable acidity in degrees Dornic, density, cryoscopic index, alizarol stability, potential of hydrogen (pH) and methylene blue reduction test. In addition, due to their importance for the industrial yield of protein-based dairy products, total milk protein fractionation was performed in protein equivalent of non-protein nitrogen, true protein and casein.The milk Dornic acidity was higher in spring and winter, while the highest somatic cell count values were in the summer. Total and true protein levels were lower during the summer and total solids increased in the autumn. With the decrease in the levels of specialization of farms, there was an increase in total bacterial count and decrease in non-protein nitrogen. The density presented an inverse behavior to that of the fat while the hydrogen potential (pH) was expressed in a way antagonistic to the acidity. In the multivariate analysis of the data it was possible to identify the combinations between production strata and stations that presented the best milk protein quality. In this sense, all the arrangements of production systems with autumn, winter highly specialized, summer partially specialized, spring specialized had positive protein quality, being highlighted by the smaller of somatic cells counts in the spring partially specialized combination.

show abstract

Correlações entre contagem de células somáticas e parâmetros físico-químicos e microbiológicos de qualidade do leite

Cited by 23 publications

References 31 publications

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Electrical conductivity and somatic cell count in zebu cow’s milk

Qualidade Físico-Química E Microbiológica Do Leite Bovino Em Diferentes Sistemas De Produção E Estações Do Ano

Contact Info

Product

Resources

About