Desempenho, composição do leite e metabólitos sanguíneos de vacas Holandês x Gir manejadas em pastagem de Brachiaria brizantha cv. Marandu e suplementadas com grão de soja tostado

Mourthé, Mário Henrique França; Reis, R.B.; Lopes, F. C. F.; Gama, Marco Antônio Sundfeld da; Souza, Reinaldo Castro

doi:10.1590/s0102-09352012000500021

Cited by 3 publications

(9 citation statements)

References 24 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The consumption of CP, NDF, and EE from the pastures was higher in the treatment with a variable rest period than in the treatment with a fixed rest period, not only in the third but also in the first grazing cycle (Table 3). The consumption of EE from the pasture was higher than that estimated by Mourthé et al (2012), which was 256 g per day for lactating Holstein x Gyr cows receiving 6 kg per day of concentrate in 'Marandu' pastures.…”

Section: Resultsmentioning

confidence: 60%

“…The contents of oleic acid observed (Table 7) are within the range of 16.6 to 22.4 g 100 g -1 of total FA, compiled by from three studies with cows in U. brizantha pastures, without supplementation with lipid sources. Lopes et al (2011a) and Mourthé et al (2012) reported concentrations of linoleic and α-linolenic acids varying, respectively, from 1.16 to 1.76 and from 0.30 to 0.40 g 100 g -1 of total FA in the milk of Holstein x Gyr cows, in pastures of U. brizantha without lipid source supplementation. In the present study, the contents of linoleic acid (Table 7) were lower than the reported ones by these authors, whereas the contents of α-linolenic acid (Table 6) can be considered similar.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Milk fatty acid profile of Holstein x Gyr cows on 'Marandu' grass pasture under different grazing strategies

Silva

Rodríguez

Morenz

et al. 2017

Pesq. agropec. bras.

View full text Add to dashboard Cite

-The objective of this work was to evaluate the milk fatty acid (FA) profile of Holstein x Gyr cows subjected to two different grazing managements (fixed and variable rest periods) of Urochloa brizantha 'Marandu' pastures. A randomized complete block design was used, with two replicates of pasture areas (blocks) per treatment and four cows per block. Milk production and composition were not affected by grazing strategies. No treatment effects were observed on the proportions (g 100 g -1 of total FA) of the main FAs (palmitic, linoleic, and α-linolenic) of the pasture, but their intakes (grams per day) were affected by differences in forage dry matter intake. The concentrations of FAs in milk plasma and fat were not affected by the treatments. Milk fat contents of rumenic, vaccenic, oleic, and α-linolenic acids varied from 0.71 to 0.93, 1.40 to 1.50, 19.40 to 19.70, and 0.39 to 0.43 g 100 g -1 total FAs, respectively. Grazing strategies of U. brizantha 'Marandu' cause no changes on the milk fatty acid profile of cows.

show abstract

Section: Resultsmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Milk fatty acid profile of Holstein x Gyr cows on 'Marandu' grass pasture under different grazing strategies

Silva

Rodríguez

Morenz

et al. 2017

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…In companion studies carried out concomitantly with the present study but with the main objective of evaluating the productive performance of the cows, Mourthé et al (2012Mourthé et al ( , 2015 observed an increase in the milk fat content and yield. In addition, there was an improvement in the milk FA profile that was promoted by decreases in the milk fat contents of lauric (C12:0), myristic (C14:0) and palmitic (C16:0) acids, which are considered hypercholesterolemic (FAO, 2010), and by increases in the milk fat contents of oleic and α-linolenic acids.…”

Section: Introductionmentioning

confidence: 48%

“…Throughout the experimental period, the four cows in the present experiment and the 16 cows from the companion work of Mourthé et al (2012) were managed together under continuous stocking on 9.5 ha of Urochloa brizantha cv. Marandu pasture.…”

Section: Methodsmentioning

confidence: 99%

“…To obtain this objective and to allow the estimation of the mass of forage in the pasture during the experimental period, five pasture samplings were performed: four on the first day of each LS period, and one on the last day of the experiment. The pasture sampling procedures were presented by Mourthé et al (2012). During the experimental period, the average DM forage allowance was 22.6 kg 100 kg -1 live weight, corresponding to 119 kg cow -1 day -1 of pasture DM.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Ruminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans

Mourthé

Lopes

Reis

et al. 2019

SCA

View full text Add to dashboard Cite

The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day -1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day -1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, which are considered beneficial to human health, and reductions in the levels of lauric, myristic and palmitic, which are considered hypercholesterolemic fatty acids. ResumoObjetivou-se neste estudo avaliar parâmetros de metabolismo no rúmen e o perfil de ácidos graxos do leite de vacas manejadas sob pastejo contínuo em capim-Marandu. Foram utilizadas quatro vacas mestiças Holandês x Gir com 79±16 dias de lactação, produzindo 21±2 kg dia -1 de leite, canuladas no rúmen e alocadas em delineamento Quadrado Latino 4 x 4. Cada vaca recebeu 6 kg dia -1 de concentrado formulado com 0 (Controle); 1,3; 2,6 ou 3,9 kg de grão de soja tostado (base matéria natural), que consistiram nos tratamentos experimentais. A inclusão de grão de soja tostado promoveu redução linear na concentração de acetato, sem efeito sobre o pH e a concentração de N amoniacal no rúmen. Não houve efeito dos tratamentos sobre a degradabilidade ruminal da matéria seca e da fibra em detergente neutro do pasto, nem sobre os parâmetros da cinética de fluidos no rúmen. Houve incremento linear nos teores de gordura e de sólidos totais e redução linear no teor de lactose do leite, mas não houve efeito dos tratamentos sobre as produções destes componentes nem sobre a produção de leite. Houve incremento linear nos teores dos ácidos graxos esteárico, elaídico, oleico, linoleico e α-linolênico no leite, mas não houve efeito dos tratamentos sobre os teores no leite dos ácidos vacênico e rumênico. A suplementação do pasto de capim-Marandu com concentrado contendo até 3,9 kg de grão de soja tostado melhorou a quali...

show abstract

Zebu‐Brahma and Mithun Milk

Fonseca

2017

Handbook of Milk of Non‐Bovine Mammals

View full text Add to dashboard Cite

Desempenho, composição do leite e metabólitos sanguíneos de vacas Holandês x Gir manejadas em pastagem de Brachiaria brizantha cv. Marandu e suplementadas com grão de soja tostado

Cited by 3 publications

References 24 publications

Milk fatty acid profile of Holstein x Gyr cows on 'Marandu' grass pasture under different grazing strategies

Milk fatty acid profile of Holstein x Gyr cows on 'Marandu' grass pasture under different grazing strategies

Ruminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans

Zebu‐Brahma and Mithun Milk

Contact Info

Product

Resources

About