Qualidade do leite bovino nas diferentes estações do ano no estado do Rio Grande do Norte

Andrade, Kivya Dias de; Rangel, Adriano Henrique do Nascimento; Araújo, Viviane Maia de; Medeiros, Henrique Rocha de; Bezerra, Karla Cavalcanti; Bezerril, Rayssa Freire; Júnior, Dorgival Morais de Lima

doi:10.4322/rbcv.2014.387

Cited by 20 publications

(15 citation statements)

References 2 publications

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“…The ESD values of the present study were higher than the results obtained by Gonzalez et al (2004), which were 8.39 (rainy season) and 8.42% (dry season) and by Martins et al (2006) raw milk samples stored for 72 h at the production source in the different seasons are in line with Brasil (2011), who found minimum fat, protein, EST and ESD contents of 3.0; 2.9, 11.4 and 8.4%, respectively. Similar results were found by Andrade et al (2014) where medios fat values (3.48%); protein (3.29%); EST (12.13%) and ESD (8.65%) were seen in the dry hazard. Already in the rainy hazard were found the following results for fat (3.59%); protein (3.31%); EST (12.25%) and ESD (8.66%).…”

Section: Resultssupporting

confidence: 76%

Effect of temperature of storage on the composition and microbiological quality of raw milk

Silva¹,

Nicolau²,

Neves³

et al. 2015

Afr. J. Microbiol. Res.

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The aim of the study was to evaluate the quality of refrigerated raw milk from dairy farms located in Southwestern state of Goiás during the rainy and dry seasons. Fresh milk samples were collected from bulk tank and stored for 0, 24, 48 and 72 h for the evaluation of psychrotrophic microorganisms counts, titratable acidity, chemical composition, somatic cell count (SCC) and total bacterial count (TBC). In the rainy season, the average temperature of the refrigerated raw milk samples was 17.4, 6.0, 6.1 and 5.3°C and in the dry period, the average temperature was 9.2, 2.4, 3.8 and 1.4°C for 0, 24, 48 and 72 h of storage, respectively. The physicochemical characteristics of refrigerated milk were consistent with the maximum limits established by Brazilian legislation after storage for 72 h in expansion tanks; however, in the dry period, refrigerated milk should not remain stored for more than 24 h due to the high TBC values. The results of the microbiological analyses revealed failures in the cleaning of equipment and utensils used for milking, demonstrating need for greater hygiene in the collection and maintenance of refrigerated milk at the production source.

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Section: Resultssupporting

confidence: 76%

Effect of temperature of storage on the composition and microbiological quality of raw milk

Silva¹,

Nicolau²,

Neves³

et al. 2015

Afr. J. Microbiol. Res.

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“…Mesmo com o consumidor, cada vez mais consciente e informado quanto aos produtos oferecidos nos mercados, estudos ainda apresentam condições microbiológicas insatisfatórias para os derivados do leite (Andrade et al, 2014;Cunha Neto et al, 2005;Leite Júnior, 2013;Reis et al,2014). Os derivados do leite são alimentos altamente susceptíveis à contaminação por fornecerem um ótimo meio de cultivo bacteriano e por terem uma carga proteica e lipídica alta.…”

Section: Resultsunclassified

Análise de psicrotróficos e psicrotróficos proteolíticos em iogurte integral

Ferreira¹,

Palhares²,

Silva³

et al. 2019

Pubvet

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Resumo. O iogurte integral é um alimento muito consumido no Brasil, porém, como qualquer derivado lácteo, é susceptível a contaminações. Objetivou-se neste trabalho detectar a presença de bactérias psicrotróficas e psicrotróficas proteolíticas em iogurte integral, uma vez que essas são bactérias indicadoras de sua qualidade microbiológica. Os resultados encontrados não foram satisfatórios para a contagem de psicrotróficos, pois apesar da legislação brasileira não estipular limites máximos para esses microrganismos, sua presença é indesejada por causarem prejuízos econômicos, entre outros problemas. Foram realizadas quatro análises durante o período de validade do iogurte, a primeira amostra (dia 0) apresentou uma contagem de 8,0x10 2 , a segunda (dia 7) teve a sua redução em 50%, (4,0x10 2 ) a terceira amostra (dia 21), 0,5x10 2 e a última análise (dia 28) houve resultado negativo. Para a contagem de psicrotróficos proteolíticos, não houve detecção de microrganismos viáveis. Conclui-se que (apesar de esforços para manter a qualidade) há falhas no processo de fabricação, frisando a necessidade de controle nas etapas de produção do iogurte e na obtenção de um leite com boa qualidade, já que este é a principal matéria prima na produção do iogurte.

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“…These results corroborate the data of Gonzalez et al (2004), who showed that excessive rainfall promotes higher mastitis rates. By contrast, Andrade et al (2014) reported no effect of season on SCCs in an evaluation of milk from commercial cattle herds within the rugged region of Rio Grande do Norte State, Brazil.…”

Section: Milk Production and Qualitymentioning

confidence: 98%

Production, Forage Quality, and Performance of Holstein Cows under Intermittent Grazing on Tifton 85

Silva¹,

Costa²,

Silva³

et al. 2017

JAS

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Tropical forage grasses compose the base diet of the Brazilian cattle herd due to their low production cost, high production potential, and good adaptation to various Brazilian ecosystems. In recent years, the search has intensified for alternatives that increase the yield in pasture milk production systems. Thus, the present study evaluated the production and quality of Tifton 85 grass in relation to the production parameters (e.g. greater leaf: stem ratio), and milk quality of Holstein cows in an intermittent grazing system during different seasons of the year. The experiment was conducted at the Córrego da Ponte Farm in Santa Helena de Goias, Goias, Brazil, from April 2014 to March 2015. The experiment used a completely randomized design with nine replicates and the four seasons (fall, winter, spring, and summer) as treatments. The Holstein cows had a live weight of 560±36.8 kg and averages four years of age. The grazing method used was a mob-stocking, with one day of grazing and 19 days of rest. The results showed that Tifton 85 was efficient regarding production parameters (total dry mass) and forage quality (IVDMD, NDF, ADF). The milk production was satisfactory during the fall, spring, and summer. The forage showed limited production during the winter, due the highest NDF, ADF levels and lower IVDMD (P < 0.05), which was directly reflected in the milk yield, fat, protein and lactose (P < 0.05). A reduction in the stocking rate or an increase in the number of paddocks is advisable during the winter to maximize milk production without compromising forage development. The correlation data showed the importance of consuming better-quality forage to increase milk production without compromising the levels of milk solids.

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Qualidade do leite bovino nas diferentes estações do ano no estado do Rio Grande do Norte

Cited by 20 publications

References 2 publications

Effect of temperature of storage on the composition and microbiological quality of raw milk

Effect of temperature of storage on the composition and microbiological quality of raw milk

Análise de psicrotróficos e psicrotróficos proteolíticos em iogurte integral

Production, Forage Quality, and Performance of Holstein Cows under Intermittent Grazing on Tifton 85

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