Data/hora: 17/06/2024 17:17:39

Biblioteca(s): | Embrapa Agroindústria de Alimentos; Embrapa Gado de Leite.
Data corrente: | 02/09/2019
Data da última atualização: | 06/02/2024
Autoria: | LOPES, F. C. F.; RIBEIRO, C. G. S.; RODRIGUEZ, N. M.; GAMA, M. A. S. da; MORENZ, M. J. F.; ANTONIASSI, R.; BIZZO, H. R.
Afiliação: | FERNANDO CESAR FERRAZ LOPES, CNPGL; Carlos Gustavo Santos Ribeiro, IFB, Planaltina, Brasília; Norberto Mario Rodriguez, UFMG; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL; ROSEMAR ANTONIASSI, CTAA; HUMBERTO RIBEIRO BIZZO, CTAA.
Título: | Butter fatty acid composition as a function of soybean oil supplementation and time of milking, and performance of Holstein x Gyr cows fed with chopped elephant grass-based diets.
Ano de publicação: | 2019
Fonte/Imprenta: | Semina: Ciências Agrárias, Londrina, v. 40, n. 5, p. 2027-2044, set./out. 2019.
DOI: | 10.5433/1679-0359.2019v40n5p2027
Idioma: | Inglês
Conteúdo: | The aim of this study was to evaluate the performance of cows fed with a total mixed ration composed of elephant grass and a concentrate containing 0.0% (control), 1.5%, 3.0% or 4.5% soybean oil on a dry matter basis. The effect of milking time (morning versus afternoon) on butter fatty acid composition was also evaluated. Twelve multiparous Holstein x Gyr cows with an average milk production of 18.0±4.6 kg day-1 and 90±25 days in milk were used in a triplicated 4 x 4 Latin square experimental design with 15-day periods. Data were analyzed using mixed models. There was no effect of soybean oil supplementation on dry matter or neutral detergent fiber intake (P > 0.05). The fat-corrected milk yield linearly decreased (P=0.0109) and the milk protein yield linearly increased (P=0.0023) in response to soybean oil supplementation. The butterfat trans-9 C18:1, cis-9 C18:1, trans-10 C18:1, trans-11 C18:1, cis-9, trans-11 CLA and trans-10, cis-12 CLA content linearly increased (P < 0.05), whereas the C12:0, C14:0 and C16:0 content linearly decreased (P < 0.001) as the level of soybean oil in the diet increased. The butter produced from afternoon milk had a lower content of C16:0 and a higher content of cis-9 C18:1 (P < 0.05). The supplementation of elephant grass-based-diets with soybean oil and, to a small extent, the selective segregation of milk obtained from afternoon milking sessions are strategies that can be used to improve the fatty acid composition of butterfat.
Thesagro: | Pennisetum Purpureum.
Thesaurus Nal: | Conjugated linoleic acid; Milk composition.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/201511/1/Semina-Butter-fatty.pdf
Registro original: | Embrapa Gado de Leite (CNPGL)

Exemplares:

CNPGL - (24749-1) - UPC - AP - DD -  -  -  - DIS
CTAA - (14705-1) - UPC - AP - DD -  -  -  - DIS