Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers
The objective of this study was to evaluate the effect of inclusion of condensed tannins (CT) from black wattle (<i>Acacia mearnsii</i>) on feed intake, ruminal protozoa population, ruminal fermentation, and nutrient digestibility in Jersey steers. Five ruminally-cannulated steers were u...
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MDPI AG
2020-06-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/10/6/1011 |
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| author | Andre S. Avila Maximiliane A. Zambom Andressa Faccenda Maria L. Fischer Fernando A. Anschau Tiago Venturini Rodrigo C. R. Tinini Jessica G. Dessbesell Antonio P. Faciola |
| author_facet | Andre S. Avila Maximiliane A. Zambom Andressa Faccenda Maria L. Fischer Fernando A. Anschau Tiago Venturini Rodrigo C. R. Tinini Jessica G. Dessbesell Antonio P. Faciola |
| author_sort | Andre S. Avila |
| collection | DOAJ |
| description | The objective of this study was to evaluate the effect of inclusion of condensed tannins (CT) from black wattle (<i>Acacia mearnsii</i>) on feed intake, ruminal protozoa population, ruminal fermentation, and nutrient digestibility in Jersey steers. Five ruminally-cannulated steers were used in a 5 × 5 Latin square design, with five periods of 20 days each (14 days for diet adaptation and six days for sample collection per period). Treatments were composed of dietary inclusion levels of condensed tannins at 0, 5, 10, 15, and 20 g/kg of diet dry matter. Intakes of dry matter, organic matter, ether extract, crude protein, neutral detergent fiber, and total digestible nutrients were not affected by condensed tannins. The ruminal pH was reduced linearly with tannin levels. Ruminal ammonia nitrogen concentration was not affected by tannins. Tannins reduced the molar proportion of acetate and did not affect the ruminal protozoal population, which might be related to the low doses used. Digestibilities of dry matter, organic matter, and neutral detergent fiber were not altered; however, there was a linear reduction in crude protein digestibility. Based on these results, CT extracts from black wattle are not recommended for improving nutrient utilization in steers at the tested levels. |
| first_indexed | 2024-03-10T19:16:43Z |
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| id | doaj.art-2224cd7c1ac44229bc496280d0bd7cea |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T19:16:43Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-2224cd7c1ac44229bc496280d0bd7cea2023-11-20T03:19:40ZengMDPI AGAnimals2076-26152020-06-01106101110.3390/ani10061011Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey SteersAndre S. Avila0Maximiliane A. Zambom1Andressa Faccenda2Maria L. Fischer3Fernando A. Anschau4Tiago Venturini5Rodrigo C. R. Tinini6Jessica G. Dessbesell7Antonio P. Faciola8Department of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Science, State University of Maringa, Maringa 87020-900, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon 85960-000, BrazilDepartment of Animal Sciences, University of Florida, Gainesville, FL 32611, USAThe objective of this study was to evaluate the effect of inclusion of condensed tannins (CT) from black wattle (<i>Acacia mearnsii</i>) on feed intake, ruminal protozoa population, ruminal fermentation, and nutrient digestibility in Jersey steers. Five ruminally-cannulated steers were used in a 5 × 5 Latin square design, with five periods of 20 days each (14 days for diet adaptation and six days for sample collection per period). Treatments were composed of dietary inclusion levels of condensed tannins at 0, 5, 10, 15, and 20 g/kg of diet dry matter. Intakes of dry matter, organic matter, ether extract, crude protein, neutral detergent fiber, and total digestible nutrients were not affected by condensed tannins. The ruminal pH was reduced linearly with tannin levels. Ruminal ammonia nitrogen concentration was not affected by tannins. Tannins reduced the molar proportion of acetate and did not affect the ruminal protozoal population, which might be related to the low doses used. Digestibilities of dry matter, organic matter, and neutral detergent fiber were not altered; however, there was a linear reduction in crude protein digestibility. Based on these results, CT extracts from black wattle are not recommended for improving nutrient utilization in steers at the tested levels.https://www.mdpi.com/2076-2615/10/6/1011additivesdigestibilityintakepolyphenolssecondary compounds |
| spellingShingle | Andre S. Avila Maximiliane A. Zambom Andressa Faccenda Maria L. Fischer Fernando A. Anschau Tiago Venturini Rodrigo C. R. Tinini Jessica G. Dessbesell Antonio P. Faciola Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers Animals additives digestibility intake polyphenols secondary compounds |
| title | Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers |
| title_full | Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers |
| title_fullStr | Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers |
| title_full_unstemmed | Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers |
| title_short | Effects of Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins on Intake, Protozoa Population, Ruminal Fermentation, and Nutrient Digestibility in Jersey Steers |
| title_sort | effects of black wattle i acacia mearnsii i condensed tannins on intake protozoa population ruminal fermentation and nutrient digestibility in jersey steers |
| topic | additives digestibility intake polyphenols secondary compounds |
| url | https://www.mdpi.com/2076-2615/10/6/1011 |
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