Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction
Abstract: 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 dieta...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Embrapa Informação Tecnológica
2019-05-01
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| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104304&tlng=en |
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| author | Deiyse Alves Silva Vicente Ribeiro Rocha Júnior José Reinaldo Mendes Ruas Pedro Felipe Santana Luana Alcântara Borges Luciana Albuquerque Caldeira Sidnei Tavares dos Reis Jordana Carvalho de Menezes Dante Pazzanese Duarte Lanna |
| author_facet | Deiyse Alves Silva Vicente Ribeiro Rocha Júnior José Reinaldo Mendes Ruas Pedro Felipe Santana Luana Alcântara Borges Luciana Albuquerque Caldeira Sidnei Tavares dos Reis Jordana Carvalho de Menezes Dante Pazzanese Duarte Lanna |
| author_sort | Deiyse Alves Silva |
| collection | DOAJ |
| description | Abstract: 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%. |
| first_indexed | 2024-04-11T17:12:04Z |
| format | Article |
| id | doaj.art-4a6ebb99da2b47d5b4fbdf6db20f5f23 |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-04-11T17:12:04Z |
| publishDate | 2019-05-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-4a6ebb99da2b47d5b4fbdf6db20f5f232022-12-22T04:12:52ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39212019-05-015410.1590/s1678-3921.pab2019.v54.00051Chemical and fatty acid composition of milk from crossbred cows subjected to feed restrictionDeiyse Alves Silvahttps://orcid.org/0000-0003-0711-752XVicente Ribeiro Rocha Júniorhttps://orcid.org/0000-0002-0721-1981José Reinaldo Mendes Ruashttps://orcid.org/0000-0002-8824-2332Pedro Felipe Santanahttps://orcid.org/0000-0003-3287-2375Luana Alcântara Borgeshttps://orcid.org/0000-0001-5191-1486Luciana Albuquerque Caldeirahttps://orcid.org/0000-0002-7522-9788Sidnei Tavares dos Reishttps://orcid.org/0000-0001-8917-6704Jordana Carvalho de Menezeshttps://orcid.org/0000-0002-7054-6741Dante Pazzanese Duarte Lannahttps://orcid.org/0000-0002-7082-8853Abstract: 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%.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104304&tlng=endesirable fatty acidsF1 Holstein/Zebulactation periodmilk quality |
| spellingShingle | Deiyse Alves Silva Vicente Ribeiro Rocha Júnior José Reinaldo Mendes Ruas Pedro Felipe Santana Luana Alcântara Borges Luciana Albuquerque Caldeira Sidnei Tavares dos Reis Jordana Carvalho de Menezes Dante Pazzanese Duarte Lanna Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction Pesquisa Agropecuária Brasileira desirable fatty acids F1 Holstein/Zebu lactation period milk quality |
| title | Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction |
| title_full | Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction |
| title_fullStr | Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction |
| title_full_unstemmed | Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction |
| title_short | Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction |
| title_sort | chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction |
| topic | desirable fatty acids F1 Holstein/Zebu lactation period milk quality |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104304&tlng=en |
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