Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers
ABSTRACT The objective of this study was to evaluate the addition of antibiotic growth promoters to concentrate on intake, digestibility, in situ degradability and ruminal variables in steers. Four steers in a Latin square design were fed hay (ad libitum), concentrate [10g kg-1 of body weight (BW)]...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Minas Gerais
2022-04-01
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| Series: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352022000100141&tlng=en |
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| author | I.M. Cortada Neto M. Vedovatto M.C. D'Oliveira A.L.L. Bento A.O. Gaspar G.L. Franco |
| author_facet | I.M. Cortada Neto M. Vedovatto M.C. D'Oliveira A.L.L. Bento A.O. Gaspar G.L. Franco |
| author_sort | I.M. Cortada Neto |
| collection | DOAJ |
| description | ABSTRACT The objective of this study was to evaluate the addition of antibiotic growth promoters to concentrate on intake, digestibility, in situ degradability and ruminal variables in steers. Four steers in a Latin square design were fed hay (ad libitum), concentrate [10g kg-1 of body weight (BW)] and mineral mix (0.272g kg-1 of BW). The additives (0.75mg kg-1 of BW) were incorporated in the mineral mix as follows: Control (no antibiotics), lasalocid (LASA), salinomycin (SALI) or virginiamycin (VIRG). Antibiotic did not affect intake, pH, volatile fatty acids (VFA) and digestibility of dry matter (DM), organic matter, crude protein, ethereal extract, and non-fibrous carbohydrates. The LASA and SALI tended (P=0.09) to reduce the digestibility of neutral detergent fiber (NDF). The SALI and VIRG tended (P=0.09) to reduce the DM disappearance, and VIRG tended (P=0.06) to reduce the NDF disappearance in the rumen. The SALI and VIRG reduced the effective degradation and only SALI reduced the concentration of N-NH3 in the rumen. Thus, the antibiotics did not affect intake, pH, VFA and digestibility, but decreased the degradation of fiber and only SALI reduced the concentration of ammonia nitrogen (N-NH3) in the rumen. |
| first_indexed | 2024-12-11T07:05:49Z |
| format | Article |
| id | doaj.art-d7750d324abd429abe8386130321ea1d |
| institution | Directory Open Access Journal |
| issn | 1678-4162 |
| language | English |
| last_indexed | 2024-12-11T07:05:49Z |
| publishDate | 2022-04-01 |
| publisher | Universidade Federal de Minas Gerais |
| record_format | Article |
| series | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| spelling | doaj.art-d7750d324abd429abe8386130321ea1d2022-12-22T01:16:30ZengUniversidade Federal de Minas GeraisArquivo Brasileiro de Medicina Veterinária e Zootecnia1678-41622022-04-0174114115210.1590/1678-4162-12389Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steersI.M. Cortada Netohttps://orcid.org/0000-0001-8173-3123M. Vedovattohttps://orcid.org/0000-0002-9050-6990M.C. D'Oliveirahttps://orcid.org/0000-0003-4406-4930A.L.L. Bentohttps://orcid.org/0000-0002-5123-5569A.O. Gasparhttps://orcid.org/0000-0003-1234-5586G.L. Francohttps://orcid.org/0000-0002-9868-0256ABSTRACT The objective of this study was to evaluate the addition of antibiotic growth promoters to concentrate on intake, digestibility, in situ degradability and ruminal variables in steers. Four steers in a Latin square design were fed hay (ad libitum), concentrate [10g kg-1 of body weight (BW)] and mineral mix (0.272g kg-1 of BW). The additives (0.75mg kg-1 of BW) were incorporated in the mineral mix as follows: Control (no antibiotics), lasalocid (LASA), salinomycin (SALI) or virginiamycin (VIRG). Antibiotic did not affect intake, pH, volatile fatty acids (VFA) and digestibility of dry matter (DM), organic matter, crude protein, ethereal extract, and non-fibrous carbohydrates. The LASA and SALI tended (P=0.09) to reduce the digestibility of neutral detergent fiber (NDF). The SALI and VIRG tended (P=0.09) to reduce the DM disappearance, and VIRG tended (P=0.06) to reduce the NDF disappearance in the rumen. The SALI and VIRG reduced the effective degradation and only SALI reduced the concentration of N-NH3 in the rumen. Thus, the antibiotics did not affect intake, pH, VFA and digestibility, but decreased the degradation of fiber and only SALI reduced the concentration of ammonia nitrogen (N-NH3) in the rumen.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352022000100141&tlng=enadditivesantibioticsgrowth promotersionophoresruminants |
| spellingShingle | I.M. Cortada Neto M. Vedovatto M.C. D'Oliveira A.L.L. Bento A.O. Gaspar G.L. Franco Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers Arquivo Brasileiro de Medicina Veterinária e Zootecnia additives antibiotics growth promoters ionophores ruminants |
| title | Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers |
| title_full | Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers |
| title_fullStr | Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers |
| title_full_unstemmed | Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers |
| title_short | Effects of antibiotic growth promoters and concentrate on intake, digestibility, degradability, and ruminal variables in beef steers |
| title_sort | effects of antibiotic growth promoters and concentrate on intake digestibility degradability and ruminal variables in beef steers |
| topic | additives antibiotics growth promoters ionophores ruminants |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352022000100141&tlng=en |
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