Data/hora: 05/06/2024 08:20:52

Provedor de dados: | 86
País: | Brazil
Título: | Milk fatty acid profile of Holstein x Gyr cows on 'Marandu' grass pasture under different grazing strategies
Autores: | Silva,Bárbara Cardoso da Mata e; Rodriguez,Norberto Mario; Morenz,Mirton José Frota; Gama,Marco Antônio Sundfeld da; Martins,Carlos Eugênio; Paciullo,Domingos Sávio Campos; Gomide,Carlos Augusto de Miranda; Anjos,Albert José dos; Madeiro,Afrânio Silva; Lopes,Fernando César Ferraz.
Data: | 2017-08-01
Ano: | 2017
Palavras-chave: | Urochloa brizantha; Conjugated linoleic acid; Rumenic acid; Tropical grass.
Resumo: | Abstract: 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000800652

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/s0100-204x2017000800011
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.52 n.8 2017
Fonte: | info:eu-repo/semantics/openAccess