Efeito de níveis crescentes de ureia na alimentação de vacas sobre o rendimento, composição, perfil de ácidos graxos e sensorial do queijo minas frescal

Souza, Vanice Mendes de; Caldeira, Luciana Albuquerque; Júnior, Vicente Ribeiro Rocha; Antunes, Ana Paula; Ruas, José Reinaldo Mendes; Santana, Pedro Felipe; Costa, Natanael Mendes; Borges, Lucas Daniel Alcântara

doi:10.4322/rbcv.2015.361

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…É importante ressaltar que as vacas produziram leite com elevado teor de gordura superando o limite mínimo de 3% estabelecido pela Instrução Normativa 62 para o leite (BRASIL, 2011). Souza et al (2015) Pereira et al (2011), que ao avaliarem quatro níveis de inclusão de torta de girassol, 0; 7; 14 e 21%, na dieta de vacas em lactação da raça Girolanda, observaram efeito linear decrescente para as concentrações de NUL, o que pode sugerir uma melhor sincronização entre a taxa de degradação de carboidratos e proteína no rúmen. A CCS foi menor que 200.000 células/mL em todos os tratamentos e não diferiu (P>0,05) entre os mesmos.…”

Section: Resultsunclassified

Composição do leite de vacas alimentadas com diferentes fontes de compostos nitrogenados

Aguiar

Júnior

Caldeira

et al. 2015

Rev. bras. saúde prod. anim.

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ResumoObjetivou-se avaliar a composição físico-química e o perfil de ácidos graxos do leite de vacas alimentadas com diferentes fontes de compostos nitrogenados (farelo de soja, ureia, farelo de girassol e farelo de mamona detoxicado). O delineamento experimental foram dois quadrados latinos 4 x 4, sendo utilizadas oito vacas F1 Holandês/Zebu, com produção média de 20 Kg de leite com 3,5% de gordura dia-1. Amostras de leite foram coletadas e analisadas quanto à composição físico-química e perfil de ácidos graxos. Com exceção do nitrogênio ureico no leite, que foi maior na dieta com ureia, as demais variáveis da composição físico-química não foram influenciadas pelas dietas com diferentes fontes de compostos nitrogenados. Quanto ao perfil de ácido graxo houve variação nas concentrações dos ácidos C4:0; C18:0; C10:1; C12:1 e C18:1 T10 T11 T12. No entanto, para os totais de ácidos graxos saturados, monoinsaturados e poliinsaturados no leite, estes não diferiram entre as fontes de compostos nitrogenados. O uso de diferentes fontes de compostos nitrogenados na dieta de vacas F1 Holandês x Zebu, com produção média de 20Kg de leite com 3,5% de gordura dia-1, não altera a composição físico-química do leite, com exceção do nitrogênio uréico que aumenta na dieta com ureia. Entretanto, pode modificar o perfil de ácidos graxos da gordura do leite.

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Section: Resultsunclassified

Composição do leite de vacas alimentadas com diferentes fontes de compostos nitrogenados

Aguiar

Júnior

Caldeira

et al. 2015

Rev. bras. saúde prod. anim.

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“…Animal Sciences, v. 44, e55570, 2022 The FC estimates of 3.88 and 3.66% were obtained for the dry and rainy periods, respectively, and are higher than the minimum limit of 3% established by Normative Instruction 62 for milk (Brasil, 2011). Souza et al (2015), observed an average of 3.52% in milk for fat content, during the study of F1 H / Z cows.…”

Section: Resultsmentioning

confidence: 91%

A principal component analysis required in technical assistance guidance for chilled raw milk producers

Leal

Azevedo

Almeida

et al. 2022

Acta Sci. Anim. Sci.

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The purpose of the present study was to evaluate the principal component analysis (PCA) to guide technical assistance regarding several dairy farms’ issues, which includes improving microbiological quality and physical-chemical composition of raw refrigerated milk. Data of monthly analysis of fat, protein, lactose, dry defatted stratum, somatic cell count, total bacterial count, milk temperature of 8,101 samples of milk from expansion tanks and production of 78 farms located in the northern region of Minas Gerais, Brazil were processed. Descriptive statistical measures and Pearson correlation coefficient were estimated involving all evaluated traits during the dry and rainy seasons. In addition, multivariate analyses were performed using PCA. The results showed that two farm sites were negatively related to milk quality in both seasons. One farm stood out positively, being able to be used as a herd management model to drive technical assistance actions. Thus, PCA is efficient in simplifying large amounts of data, allowing simpler and faster technical herd management interpretation.

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“…To maintain the quality standard in its production, in addition to the adequate processing, it is fundamental the quality of the raw material, which can be influenced, among other factors, by the diet of the animal (MARTINS et al, 2012;MELO et al, 2017;SOUZA et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Quality of cheese produced with milk from cows fed forage palm with different forages

Soares

Júnior

Caldeira

et al. 2019

SCA

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The objective of this study was to evaluate the effects of forage palm combined with different forages in the diet of F1 Holstein x Zebu cows, on the quality of Minas Frescal cheese. Two simultaneous 4 x 4 Latin squares were used in the experimental design. The treatments consisted of sorghum silage as the sole forage source; replacement of 50% sorghum silage by forage palm; elephant grass as the only forage source; 50% replacement of elephant grass by forage palm. Milk samples from each cow were analyzed for the chemical composition and the milk was pasteurized for cheese production. The gross and adjusted yields, texture, chemical and sensorial characteristics and fatty acid profile were evaluated. The chemical composition of the cheese was not influenced by the diets, as well as the sum of saturated, monounsaturated and polyunsaturated fatty acids. However, a lower stearic acid content was found in cheese from the milk of cows fed grass with forage palm and a lower value of conjugated linoleic acid for the diet with silage alone. In the consumer preference ranking test, the most preferred cheese was that of the sorghum silage diet and the least preferred was that of the sorghum silage/forage palm diet. In the overall impression, higher scores were assigned to cheeses of the treatments with exclusive silage or elephant grass. The replacement of 50% sorghum silage or elephant grass by the forage palm did not change the chemical composition of the Minas Frescal cheese, however, it modified the profile of fatty acids and decreased the acceptance and preference of cheese by the consumers.

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Efeito de níveis crescentes de ureia na alimentação de vacas sobre o rendimento, composição, perfil de ácidos graxos e sensorial do queijo minas frescal

Cited by 5 publications

References 7 publications

Composição do leite de vacas alimentadas com diferentes fontes de compostos nitrogenados

Composição do leite de vacas alimentadas com diferentes fontes de compostos nitrogenados

A principal component analysis required in technical assistance guidance for chilled raw milk producers

Quality of cheese produced with milk from cows fed forage palm with different forages

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