Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed
The aim of this study was to evaluate the ruminal fermentation and degradation parameters, the kinetic flow of digesta in the gastrointestinal tract, and the milk fatty acid (FA) profile in Holstein x Gyr cows fed 59% sugarcane silage-based diets with 0% (control), 5%, 10% and 15% whole cottonseed (...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2020-05-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37097 |
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| author | Dayana Alves da Costa Fernando César Ferraz Lopes Gesiane Moura Neves Rebouças Jailton da Costa Carneiro Marco Antônio Sundfeld da Gama Clebson Lucas de Souza Eloísa de Oliveira Simões Saliba |
| author_facet | Dayana Alves da Costa Fernando César Ferraz Lopes Gesiane Moura Neves Rebouças Jailton da Costa Carneiro Marco Antônio Sundfeld da Gama Clebson Lucas de Souza Eloísa de Oliveira Simões Saliba |
| author_sort | Dayana Alves da Costa |
| collection | DOAJ |
| description | The aim of this study was to evaluate the ruminal fermentation and degradation parameters, the kinetic flow of digesta in the gastrointestinal tract, and the milk fatty acid (FA) profile in Holstein x Gyr cows fed 59% sugarcane silage-based diets with 0% (control), 5%, 10% and 15% whole cottonseed (WCS) on a dry matter (DM) basis. Four rumen-cannulated cows with an average milk yield of 14.4±3.3 kg day-1 and 85±25 days in milk were allocated in a 4 x 4 Latin square design. There was no effect of dietary WCS levels on the intake of organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and nonfibrous carbohydrates, but there was a linear increase in the intake of ether extract (EE). There was no treatment effect on the apparent digestibility of DM, OM, CP, EE and NDF or on the ruminal degradability parameters for DM and NDF of sugarcane silage. Also, no treatment effects were observed on rumen pH, ruminal and postruminal particulate passage rates or on the rate of passage of the fluids in the rumen. WCS promoted linear reductions in the milk fat contents of lauric, myristic and palmitic acids and linear increases in the milk fat contents of stearic, oleic, trans-10 C18:1 and elaidic acids. The milk fat contents of vaccenic, rumenic, linoleic and ?-linolenic acids were unaffected by WCS supplementation. The inclusion of up to 15% WCS in sugarcane silage-based diets did not alter the digestibility of nutrients, the rumen degradability of the fiber, or the kinetic flow of digesta in the gastrointestinal tract of Holstein x Gyr cows but improved the nutritional quality of milk fat through an increase in the content of oleic acid, which is beneficial to human health, and decreased levels of hypercholesterolemic lauric, myristic and palmitic acids. |
| first_indexed | 2024-04-10T20:40:58Z |
| format | Article |
| id | doaj.art-db54c185459b4ce986dbf11748665d3f |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-04-10T20:40:58Z |
| publishDate | 2020-05-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-db54c185459b4ce986dbf11748665d3f2023-01-24T19:56:00ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592020-05-0141410.5433/1679-0359.2020v41n4p1317Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseedDayana Alves da Costa0Fernando César Ferraz Lopes1Gesiane Moura Neves Rebouças2Jailton da Costa Carneiro3Marco Antônio Sundfeld da Gama4Clebson Lucas de Souza5Eloísa de Oliveira Simões Saliba6Instituto Federal de Educação, Ciência e Tecnologia do AcreEmpresa Brasileira de Pesquisa AgropecuáriaCentro Universitário da Grande DouradosEmpresa Brasileira de Pesquisa AgropecuáriaEmpresa Brasileira de Pesquisa AgropecuáriaInstituto Federal de Educação, Ciência e Tecnologia do AcreUniversidade Federal de Minas GeraisThe aim of this study was to evaluate the ruminal fermentation and degradation parameters, the kinetic flow of digesta in the gastrointestinal tract, and the milk fatty acid (FA) profile in Holstein x Gyr cows fed 59% sugarcane silage-based diets with 0% (control), 5%, 10% and 15% whole cottonseed (WCS) on a dry matter (DM) basis. Four rumen-cannulated cows with an average milk yield of 14.4±3.3 kg day-1 and 85±25 days in milk were allocated in a 4 x 4 Latin square design. There was no effect of dietary WCS levels on the intake of organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and nonfibrous carbohydrates, but there was a linear increase in the intake of ether extract (EE). There was no treatment effect on the apparent digestibility of DM, OM, CP, EE and NDF or on the ruminal degradability parameters for DM and NDF of sugarcane silage. Also, no treatment effects were observed on rumen pH, ruminal and postruminal particulate passage rates or on the rate of passage of the fluids in the rumen. WCS promoted linear reductions in the milk fat contents of lauric, myristic and palmitic acids and linear increases in the milk fat contents of stearic, oleic, trans-10 C18:1 and elaidic acids. The milk fat contents of vaccenic, rumenic, linoleic and ?-linolenic acids were unaffected by WCS supplementation. The inclusion of up to 15% WCS in sugarcane silage-based diets did not alter the digestibility of nutrients, the rumen degradability of the fiber, or the kinetic flow of digesta in the gastrointestinal tract of Holstein x Gyr cows but improved the nutritional quality of milk fat through an increase in the content of oleic acid, which is beneficial to human health, and decreased levels of hypercholesterolemic lauric, myristic and palmitic acids.https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37097Conjugated linoleic acidSaccharum officinarumRate of passageRumen. |
| spellingShingle | Dayana Alves da Costa Fernando César Ferraz Lopes Gesiane Moura Neves Rebouças Jailton da Costa Carneiro Marco Antônio Sundfeld da Gama Clebson Lucas de Souza Eloísa de Oliveira Simões Saliba Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed Semina: Ciências Agrárias Conjugated linoleic acid Saccharum officinarum Rate of passage Rumen. |
| title | Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed |
| title_full | Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed |
| title_fullStr | Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed |
| title_full_unstemmed | Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed |
| title_short | Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed |
| title_sort | ruminal fermentation and degradation kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage based diets supplemented with whole cottonseed |
| topic | Conjugated linoleic acid Saccharum officinarum Rate of passage Rumen. |
| url | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37097 |
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