Effect of Somatic Cell Count on Bovine Milk Protein Fractions

TM, Ramos

doi:10.4172/2155-9872.1000269

Cited by 10 publications

(6 citation statements)

References 41 publications

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“…According to GUO et al (2010), decreases in protein content in cows responding to infection are mainly associated with the serum protein fraction. RAMOS et al (2015) stressed that there was a higher proteolytic activity associated with high SCC. Therefore, casein synthesis during mastitis was usually reduced (RAMOS et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…RAMOS et al (2015) stressed that there was a higher proteolytic activity associated with high SCC. Therefore, casein synthesis during mastitis was usually reduced (RAMOS et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…The lowest lactose in the present study was determined in milk with SCC >500×10 3 cells/mL (Table 4). RAMOS et al (2015) reported that inflammation of mammary glands results in a reduction in lactose synthesis. This is because the glandular edema makes it difficult for glucose to reach the udder gland (GARCIA et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

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The effects of somatic cell count on milk yield and milk composition in Holstein cows

Kul¹,

Şahin²,

Atasever³

et al. 2019

Vet. arhiv

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________________________________________________________________________________________ KUl, E., A. ŞAHİn, S. ATASEvEr, E. UğUrlUTEpE, M. SoydAnEr: The effects of somatic cell count on milk yield and milk composition in Holstein cows. vet. arhiv 89, 143-154, 2019. ABSTrACTThis study was conducted to assess the impact of somatic cell count (SCC) on the test day milk yield (TDMY) and milk composition parameters (fat, solids-not-fat, protein and lactose) of Holstein cows raised in the Kırşehir province of Turkey. A total of 1194 raw milk samples were collected from 195 Holstein cows at different stages of lactation (from 1 to 7), parities (from 1 to 3) and calving seasons (autumn, winter, spring and summer). Also, TDMY and milk composition traits were tested by SCC in four groups (<100×10 3 , 100-200×10 3 , 201-500×10 3 and >500×10 3 cells/mL). For statistical evaluation, SCC data were converted to log 10 base. The overall means of log 10 SCC, TDMY, fat, solids-not-fat (SNF), protein and lactose were determined as 4.95 ± 0.016, 33.36 ± 0.232 kg/day, 3.39 ± 0.021%, 9.04 ± 0.013%, 3.32 ± 0.005% and 4.92 ± 0.007%, respectively. Log 10 SCC, TDMY, fat, SNF, protein and lactose were significantly affected by the stage of lactation, parity and calving seasons (P<0.05). An increase in the SCC was accompanied by a decrease in the milk yield as well as its content (P<0.05). Cows' milk with high SCC (>201×10 3 cells/mL) had a lower TDMY than milk with lower SCC (<100×10 3 and 100-200 cells/mL). However, the lowest fat, SNF, protein and lactose were determined in milk with SCC >500×10 3 cells/mL. It was concluded that SCC in milk should not exceed 500×10 3 cells/mL for Holstein cows, suggesting that monthly control of SCC may be effective for improving milk production and milk quality in Holstein cows.

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Section: Resultsmentioning

confidence: 99%

“…RAMOS et al (2015) stressed that there was a higher proteolytic activity associated with high SCC. Therefore, casein synthesis during mastitis was usually reduced (RAMOS et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

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The effects of somatic cell count on milk yield and milk composition in Holstein cows

Kul¹,

Şahin²,

Atasever³

et al. 2019

Vet. arhiv

View full text Add to dashboard Cite

show abstract

“…Additionally, the potential of milk as a raw material for product manufacturers as well as the industrial output of milk were both strongly impacted by the changes in protein fractions of milk brought on by high SCC. The casein fraction was primarily responsible for these changes (Fernandes et al, 2008 andRamos et al, 2015). Similarly, high TBC values were associated with low milk stability, which was likely caused by both proteolysis and lactose degradation which consequently increased ionic calcium concentrations, decreased pH and calcium phosphate values, and destabilized casein micelles (Bueno et al, 2008;Lewis andDeeth, 2009 andMachado et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Interrelationships Between Milk Constituents, Protein Profile, Genotypes of Kappa-Casein Gene and Ethanol Stability of Cow's Milk

EL-WAKEEL

ASFOUR

GAMAL

et al. 2023

Assiut Veterinary Medical Journal

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This study aimed to withstand some factors that may be associated with and affected the alcohol instability of milk. Both individual milk and EDTA whole blood were collected from 162 cows among 4 Holstein dairy farms that suffered from their milk rejection because of milk ethanol instability. Milk samples were subjected to the measurement of milk components, pH, somatic cell count, and total bacterial count. Thirty milk samples were subjected to the detection of AFM1. Three mixed rations from each farm were subjected to the detection of AFB1. Blood samples were subjected to genotyping of the kappa-casein gene. About 72.2% and 27.8% of samples were recorded as ethanol-stable and unstable milk. A significant reduction was observed in the protein, fat, TS, and pH of ethanol unstable versus stable milk while a significant increase in salts, SCC, and TBC was observed. A significant difference was observed in AFM1 in stable versus unstable milk. The concentration of AFB1 ranged from 18.58 ppb up to 34.58 ppb. A significant difference in protein fractions was observed. Genotyping of the kappa-casein revealed that 51, 87, and 24 cows were AA, AB, and BB genotypes. Significantly higher fat and TS percentages and a significantly lower TBC in animals with BB genotypes (p≤0.05) versus those of both AA and AB genotypes were detected. In conclusion, continuous monitoring of different milk composition parameters, udder health represented by TBC and SCC and aflatoxin load in animal feed can be the first steps toward the production of ethanol-stable milk.

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“…Although well known in bovine species, studies about this disease in ovine species are scarce (BAGLITZ et al, 2008). The diagnosis of subclinical mastitis can be performed through the somatic cell count (SCC), i.e., the examination of structures of the organism defense before inflammation or infection and composed by immune system cells (somatic cells) and epithelial cells (SUMMER et al, 2012). As an indicator of the mammary gland health and the milk quality, the SCC is quite studied in bovine species (VIANA et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of microscopic protocols for somatic cell counts in milk of dairy sheep

Moraes¹,

Vieira

Pinto

et al. 2018

Arq. Inst. Biol.

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ABSTRACT:The somatic cell count (SCC) is a diagnostic tool that indicates the mammary gland health and can be determined by the counting of cells in the microscope. There are discussions regarding appropriate staining method to the ewes' milk. The present study aimed to identify a methodology of microscopic SCC proper to the milk of the ovine species. Therefore, glass slides for smear were manufactured with 10 µL of ewe's milk in 1 cm 2 , and the fixers xylol and Carnoy's solution were tested, as well as and May-Grünwald, Broadhurst-Paley, Wrigth and Panoptic stainings. Carnoy's solution was elected, because it allowed a better fixation of the dairy film to the microscope slides, and Broadhurst-Paley staining, due to its good coloration and visualization of cells, as well as the differentiation of cytoplasmic corpuscles in ewe's milk. Broadhurst-Paley coloration is a tool applicable to the somatic cell count in ovine specie's milk. RESUMO: A contagem de células somáticas é uma ferramenta de diagnóstico indicativa da saúde da glândula mamária e pode ser determinada em microscópio. Sobre ela, existem discussões quanto à coloração adequada ao leite de ovelhas. O presente estudo objetivou identificar uma metodologia de preparação de lâminas para a contagem microscópica de células somáticas do leite da espécie ovina. Para tanto, confeccionaram-se lâminas de esfregaços de 10 µL de leite de ovelha em 1 cm 2 , testaram-se os fixadores de xilol e solução de Carnoy e as colorações de May-Grünwald, Broadhurst-Paley, Wrigth e Panótico. Elegeram-se a solução de Carnoy, pois esta permitiu melhor fixação do filme lácteo às lâminas de microscopia, e o corante Broadhurst-Paley, que propiciou boa coloração e visualização das células, bem como a diferenciação dos corpúsculos citoplasmáticos presentes no leite ovino. A coloração é uma ferramenta aplicável à contagem de células somáticas no leite da espécie ovina. KEYWORDS: PALAVRAS-CHAVE:contagem de células somáticas; coloração Broadhurst-Paley; Lacaune.

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Effect of Somatic Cell Count on Bovine Milk Protein Fractions

Cited by 10 publications

References 41 publications

The effects of somatic cell count on milk yield and milk composition in Holstein cows

The effects of somatic cell count on milk yield and milk composition in Holstein cows

Interrelationships Between Milk Constituents, Protein Profile, Genotypes of Kappa-Casein Gene and Ethanol Stability of Cow's Milk

Evaluation of microscopic protocols for somatic cell counts in milk of dairy sheep

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