Data/hora: 06/06/2024 06:06:47

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 28/05/2019
Data da última atualização: | 20/08/2019
Autoria: | SILVA, D. A.; ROCHA JÚNIOR, V. R.; RUAS, J. R. M.; SANTANA, P. F.; BORGES, L. A.; CALDEIRA, L. A.; REIS, S. T. dos; MENEZES, J. C. de; LANNA, D. P. D.
Afiliação: | Deiyse Alves Silva, Universidade Estadual de Montes Claros - UNIMONTES; Vicente Ribeiro Rocha Júnior, Universidade Estadual de Montes Claros - UNIMONTES; José Reinaldo Mendes Ruas, Universidade Estadual de Montes Claros - UNIMONTES; Pedro Felipe Santana, Universidade Estadual de Montes Claros - UNIMONTES; Luana Alcântara Borges, Universidade Estadual de Montes Claros - UNIMONTES; Luciana Albuquerque Caldeira, Universidade Estadual de Montes Claros - UNIMONTES; Sidnei Tavares dos Reis, Universidade Federal de Sergipe - UFSE/Departamento de Agronomia; Jordana Carvalho de Menezes, Universidade Estadual de Montes Claros - UNIMONTES; Dante Pazzanese Duarte Lanna, Universidade de São Paulo - USP/Escola Superior de Agricultura Luiz de Queiroz - ESALQ.
Título: | Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction.
Ano de publicação: | 2019
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v. 54, e00051, 2019.
Idioma: | Português
Notas: | Título em português: Composição química e de ácidos graxos do leite de vacas mestiças submetidas à restrição alimentar.
Conteúdo: | The objective of this work was to evaluate the chemical composition and fatty acid profile of milk from F1 Holstein/Zebu cows in different lactation periods, when receiving different levels of dietary supply in percentage of body weight. Sixty cows were evaluated, with five levels of dietary supply and three lactation periods. The levels of dietary supply had no effect on the production of milk corrected to 3.5% fat (12.25 kg per day). There was also no effect of dietary supply levels, in the different lactation periods, on contents of fat (3.34%), protein (3.41%), lactose (4.60%), total solids (12.0%), defatted dry extract (8.80%), and urinary nitrogen (14.5 mg dL-1), nor on somatic cell count (89.98 mL-1). As the dietary supply level was reduced, the sum of saturated fatty acids in milk was decreased in up to 9.15% and that of monounsaturated fatty acids was increased in up to 25.28%. Feed restriction does not alter the chemical composition of milk, but improves its quality of fat by reducing saturated fatty acid content, increasing the concentration of monounsaturated and desirable fatty acids in up to 54%, and increasing the hypo- and hypercholesterolemic fatty acid ratio in up to 168.97%.
Palavras-Chave: | Desirable fatty acids; F1 Holstein/Zebu; Lactation period; Período de lactação; Qualidade do leite.
Thesagro: | Ácido Graxo.
Thesaurus Nal: | Milk quality.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/197796/1/Chemical-and-fatty-acid-composition.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (63825-1) - UPE - AP - DD -  -  -  - DIS