Desempenho produtivo e composição do leite de vacas da raça holandesa no final da lactação, manejadas em pastagem e suplementadas com diferentes níveis de concentrado

Mota, Marcelo Falci; Vilela, Duarte; Santos, Geraldo Tadeu dos; Elyas, Ana Cristina Wyllie; Lopes, Fernando César Ferraz; Verneque, Rui da Silva; Neto, Adalgiza Pinto

doi:10.4322/rbcv.2014.205

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…These results were higher than those proposed by Normative Instruction 62/2011, which calls for minimum levels of crude protein 2.9%. Values similar to those obtained in this study were observed by Mota et al (2008), who assessed production performance and milk composition of Holstein cows in late phase of lactation and found protein contents ranging from 2.97 to 3.16%.…”

Section: Resultssupporting

confidence: 90%

Influence of breeds genetic composition on the quality of milk from primiparous cows

Melo¹,

Silva²,

Silva³

et al. 2015

Afr. J. Biotechnol.

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HO x 1/8 Gyr) raised under similar handling and feeding conditions. The sample collection was carried out between January and March 2013. To compare the quality of milk among breeds genetic compositions, the study was set up in a completely randomized design. Data of variables fat, protein, lactose contents, fat free dry matter (DDE), urea, somatic cell count, electrical conductivity, pH, titratable acidity and production were submitted to analysis of variance using the Tukey test at 5% probability for comparison of means between treatment 1 (1/2 HO x 1/2 Gyr), treatment 2 (3/4 HO x 1/4 Gyr) and treatment 3 (7/8 HO x 1/8 Gyr). Statistical analyses were performed using the SISVAR ®-UFLA software. Correlation analysis between variables was performed using the ASSISTAT software. The results demonstrate that the genetic makeup of the different races holstein / Gyr primiparous cows did not affect the quality of the milk produced. The values of the chemical constituents of milk have been considered suitable for human consumption. Titratable acidity and milk production were higher for 3/4 Holstein/Gyr animals.

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Section: Resultssupporting

confidence: 90%

Influence of breeds genetic composition on the quality of milk from primiparous cows

Melo¹,

Silva²,

Silva³

et al. 2015

Afr. J. Biotechnol.

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“…The average milk fat content observed in the present study was higher than that observed by Mota et al (2008), who studied the productive performance and milk composition of Holstein cows at the end of lactation. The cows in the previous study were raised on Coastcross bermudagrass pastures and received different levels of concentrated supplement.…”

Section: Milk Production and Qualitycontrasting

confidence: 87%

“…The milk lactose and protein contents observed in the summer were higher than those reported by Mota et al (2008), who observed means of 43 g kg −1 lactose and 30 g kg −1 protein in the milk of Holstein cows raised on Coastcross bermudagrass pastures during summer.…”

Section: Milk Production and Qualitycontrasting

confidence: 72%

Production of Jiggs bermudagrass and the impact of quality milk production and quality of Holstein dairy cows under an intermittent grazing system

et al. 2018

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Dairy production plays a fundamental role in the Brazilian economy, and high-17 quality forage is necessary for ruminants to produce satisfactory milk levels, so the aim of the 18 present study was to evaluate the production and quality of Jiggs bermudagrass and its effects 19 on the production and quality parameters of milk from Holstein cows under an intermittent 20 grazing system throughout the year. The experiment was conducted in a randomized design 21 with the four seasons as treatments was replicated five times. The season had a significant 22 effect on the production and nutritional parameters of Jiggs bermudagrass with the highest 23 total dry matter production observed during summer followed by spring and fall. The neutral 24 detergent fiber and acid detergent fiber contents were significantly higher in winter. The In 25 vitro dry matter digestibility was significantly higher in summer, spring and fall. Jiggs 26

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“…As gramí-neas predominantes no país são do tipo C4, com características de alta efi ciência fotossintética e elevadas taxas de crescimento (Mota et al, 2008).…”

Section: Introductionunclassified

Produtividade e composição bromatológica de Panicum maximum cv. Mombaça sob irrigação e adubação azotada

Filho¹,

Carneiro²,

Andrade³

et al. 2016

Rev. Ciênc. Agr.

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R e s u m oForam avaliados os efeitos de diferentes lâminas de irrigação e doses de azoto (N) sobre a produtividade, efi ciência do uso do azoto (EUN) e composição bromatológica do Panicum maximum cv. Mombaça. O delineamento experimental foi em blocos casualizados, em esquema fatorial 2x4, com três repetições, sendo dois níveis de irrigação (50% e 80% da evaporação do Tanque Classe "A", ECA) e quatro doses de N (200, 400, 600 e 800 kg/ha/ano). As lâminas de irrigação aplicadas apresentaram comportamentos semelhantes em relação à EUN, produção de matéria seca total (PMST), de folhas (PMSF) e colmos (PMSC), e teores de fi bra em detergente neutro (FDN). A adubação azotada infl uenciou positivamente a PMST, PMSF e PMSC, no entanto, diminuiu a EUN. Os teores de proteína bruta (PB) das folhas e colmos foram infl uenciados pela interação lâminas de irrigação x adubação azotada. Houve efeito linear do N sobre os teores de PB. Os teores de fi bra em detergente ácido (FDA) apresentaram infl uência negativa da maior lâmina de irrigação e foram reduzidos pela adubação azotada. A irrigação de 50% da ECA, associada à aplicação de 800 kg de N/ha/ano, apresentou os melhores resultados, considerando-se a produtividade, composição bromatológica e economia de água.Palavras-chave: fi bra em detergente ácido, fi bra em detergente neutro, proteína bruta, tanque classe "A". A b s t r a c tThe eff ects of diff erent irrigation levels and doses of nitrogen (N) on yield, nitrogen use effi ciency (NUE) and chemical composition of Mombasa grass (Panicum maximum) were evaluated. The experimental design was randomized blocks in a 2x4 factorial, with three replicates, two water levels (50% and 80% of Class A pan evaporation, ECA) and four levels of N (200, 400, 600 and 800 kg / ha / year). The water depth applied showed similar behaviors regarding NUE, total dry matt er yield (TDMY), leaves (DMYL) and stems (DMYS), and levels of neutral detergent fi ber (NDF). The nitrogen fertilization infl uenced positively TDMY, DMYL and DMYS, however, decreased NUE. Crude protein (CP) of the leaves and stems were infl uenced by the interaction of blades irrigation x nitrogen fertilization. There was a linear eff ect of N on the PB. The levels of acid detergent fi ber (ADF) had negative infl uence of greater water depth. Concentrations of ADF were reduced by nitrogen fertilization. Irrigation of 50% of ECA, associated with application of 800 kg N / ha / year, showed the best results, considering productivity, chemical composition and water savings.Keywords: acid detergent fi ber, class A pan, crude protein, neutral detergent fi ber.

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Desempenho produtivo e composição do leite de vacas da raça holandesa no final da lactação, manejadas em pastagem e suplementadas com diferentes níveis de concentrado

Cited by 3 publications

References 5 publications

Influence of breeds genetic composition on the quality of milk from primiparous cows

Influence of breeds genetic composition on the quality of milk from primiparous cows

Production of Jiggs bermudagrass and the impact of quality milk production and quality of Holstein dairy cows under an intermittent grazing system

Produtividade e composição bromatológica de Panicum maximum cv. Mombaça sob irrigação e adubação azotada

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