Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids
ABSTRACT Eight rumen-cannulated steers were assigned to two 4 × 4 balanced Latin squares to evaluate degradability and kinetics of fiber particles from diets based on corn silage and supplements with or without addition of lipids. Dietary treatments were: only corn silage (T1), corn silage plus conc...
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| Format: | Article |
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Sociedade Brasileira de Zootecnia
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| Series: | Revista Brasileira de Zootecnia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200773&lng=en&tlng=en |
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| author | Elizabeth Fonsêca Processi Carlos Augusto de Alencar Fontes Ricardo Augusto Mendonça Vieira Laila Cecília Ramos Bendia Tiago Cunha Rocha Alberto Magno Fernandes Jéssica Morais Cunha |
| author_facet | Elizabeth Fonsêca Processi Carlos Augusto de Alencar Fontes Ricardo Augusto Mendonça Vieira Laila Cecília Ramos Bendia Tiago Cunha Rocha Alberto Magno Fernandes Jéssica Morais Cunha |
| author_sort | Elizabeth Fonsêca Processi |
| collection | DOAJ |
| description | ABSTRACT Eight rumen-cannulated steers were assigned to two 4 × 4 balanced Latin squares to evaluate degradability and kinetics of fiber particles from diets based on corn silage and supplements with or without addition of lipids. Dietary treatments were: only corn silage (T1), corn silage plus concentrate with no added lipids (T2), corn silage plus concentrate with added soybean oil (T3), and corn silage plus concentrate containing ground soybean seeds (T4). Kinetics of gastrointestinal transit of fibrous particles was evaluated based on chromium-mordanted fiber. Events of rumen degradation dynamics of fibrous carbohydrates were quantified using the in situ incubation procedure. The mixed models methodology from SAS was used to fit models and the Tukey test was used to compare means. The ruminal digestibility of fiber was lower in treatments T3 and T4 and, consequently, lower proportions of potentially digestible fraction of standardized fiber and higher proportions of indigestible fraction of standardized fiber for treatments T3 and T4 compared with T1 and T2 were observed. However, there were no differences in mean retention time of the rumen, total mean retention time, mean digestion time, and rumen fill among diets. Animals from T2, T3, and T4 showed higher dry matter intake, organic matter intake, and crude protein intake rates than animals receiving T1 diet, but there was no effect of the addition of lipid. Treatments did not differ regarding neutral detergent fiber intake. Animals from T1 had lower crude fat intake than animals from T2, which showed lower crude fat intake than those from T3 and T4. The addition of lipid to concentrate has no effect on passage rate, digestion rate, and intake, when a good quality roughage is used. |
| first_indexed | 2024-12-12T01:37:05Z |
| format | Article |
| id | doaj.art-dfd10fd7754844af8e6d7c63e6310004 |
| institution | Directory Open Access Journal |
| issn | 1806-9290 |
| language | English |
| last_indexed | 2024-12-12T01:37:05Z |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-dfd10fd7754844af8e6d7c63e63100042022-12-22T00:42:49ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1806-9290451277378010.1590/s1806-92902016001200007S1516-35982016001200773Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipidsElizabeth Fonsêca ProcessiCarlos Augusto de Alencar FontesRicardo Augusto Mendonça VieiraLaila Cecília Ramos BendiaTiago Cunha RochaAlberto Magno FernandesJéssica Morais CunhaABSTRACT Eight rumen-cannulated steers were assigned to two 4 × 4 balanced Latin squares to evaluate degradability and kinetics of fiber particles from diets based on corn silage and supplements with or without addition of lipids. Dietary treatments were: only corn silage (T1), corn silage plus concentrate with no added lipids (T2), corn silage plus concentrate with added soybean oil (T3), and corn silage plus concentrate containing ground soybean seeds (T4). Kinetics of gastrointestinal transit of fibrous particles was evaluated based on chromium-mordanted fiber. Events of rumen degradation dynamics of fibrous carbohydrates were quantified using the in situ incubation procedure. The mixed models methodology from SAS was used to fit models and the Tukey test was used to compare means. The ruminal digestibility of fiber was lower in treatments T3 and T4 and, consequently, lower proportions of potentially digestible fraction of standardized fiber and higher proportions of indigestible fraction of standardized fiber for treatments T3 and T4 compared with T1 and T2 were observed. However, there were no differences in mean retention time of the rumen, total mean retention time, mean digestion time, and rumen fill among diets. Animals from T2, T3, and T4 showed higher dry matter intake, organic matter intake, and crude protein intake rates than animals receiving T1 diet, but there was no effect of the addition of lipid. Treatments did not differ regarding neutral detergent fiber intake. Animals from T1 had lower crude fat intake than animals from T2, which showed lower crude fat intake than those from T3 and T4. The addition of lipid to concentrate has no effect on passage rate, digestion rate, and intake, when a good quality roughage is used.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200773&lng=en&tlng=enfiberintakepassage rate |
| spellingShingle | Elizabeth Fonsêca Processi Carlos Augusto de Alencar Fontes Ricardo Augusto Mendonça Vieira Laila Cecília Ramos Bendia Tiago Cunha Rocha Alberto Magno Fernandes Jéssica Morais Cunha Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids Revista Brasileira de Zootecnia fiber intake passage rate |
| title | Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids |
| title_full | Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids |
| title_fullStr | Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids |
| title_full_unstemmed | Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids |
| title_short | Degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids |
| title_sort | degradability and kinetics of fibrous particles in cattle fed diets based on corn silage and concentrates with or without addition of lipids |
| topic | fiber intake passage rate |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200773&lng=en&tlng=en |
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