Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows
The objective of this study was to evaluate the effects of five levels of condensed tannins (CT) from black wattle (<i>Acacia mearnsii</i>) in the diets of lactating dairy cows on intake, nutrient digestibility, ruminal microbial protein synthesis, milk production, composition, oxidative...
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doaj-a93d74ac3d8543c2aae51e14a11b0e5a2020-11-25T02:33:48ZengMDPI AGAnimals2076-26152020-04-011066266210.3390/ani10040662Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy CowsAndre S. Avila0Maximiliane A. Zambom1Andressa Faccenda2Caroline H. Werle3Ana R. E. Almeida4Cibele R. Schneider5Dieisson G. Grunevald6Antonio P. Faciola7Department of Animal Science, State University of Western Parana, Marechal Candido Rondon, PR 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon, PR 85960-000, BrazilDepartment of Animal Science, State University of Maringa, Maringa, PR 87020-900, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon, PR 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon, PR 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon, PR 85960-000, BrazilDepartment of Animal Science, State University of Western Parana, Marechal Candido Rondon, PR 85960-000, BrazilDepartment of Animal Sciences, University of Florida, Gainesville, FL 32611, USAThe objective of this study was to evaluate the effects of five levels of condensed tannins (CT) from black wattle (<i>Acacia mearnsii</i>) in the diets of lactating dairy cows on intake, nutrient digestibility, ruminal microbial protein synthesis, milk production, composition, oxidative profile, and blood metabolites. Five Holstein cows (88 ± 26.8 days in milk) were allocated in a 5 x 5 Latin square design for a period of 20 days (14 days of diet adaptation and six for sampling). Treatments were the inclusion levels of CT at 0, 5, 10, 15 and 20 g/kg of dry matter (DM) in the diet. There was no effect of CT on DM intake. The digestibility of DM and neutral detergent fiber changed quadratically, with the maximum values at 12.2 and 11.4 g/kg of DM, respectively. There was no effect on ruminal microbial protein synthesis and milk production; however, milk casein concentration was reduced linearly. There was no effect on the milk oxidative profile. Inclusion of CT at levels up to 20 g/kg of DM did not affect intake or microbial protein synthesis; however, added CT depressed the production of energy corrected milk and milk casein concentration.https://www.mdpi.com/2076-2615/10/4/662digestibilityintakemilk proteinpolyphenolssecondary compounds |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andre S. Avila Maximiliane A. Zambom Andressa Faccenda Caroline H. Werle Ana R. E. Almeida Cibele R. Schneider Dieisson G. Grunevald Antonio P. Faciola |
spellingShingle |
Andre S. Avila Maximiliane A. Zambom Andressa Faccenda Caroline H. Werle Ana R. E. Almeida Cibele R. Schneider Dieisson G. Grunevald Antonio P. Faciola Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows Animals digestibility intake milk protein polyphenols secondary compounds |
author_facet |
Andre S. Avila Maximiliane A. Zambom Andressa Faccenda Caroline H. Werle Ana R. E. Almeida Cibele R. Schneider Dieisson G. Grunevald Antonio P. Faciola |
author_sort |
Andre S. Avila |
title |
Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows |
title_short |
Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows |
title_full |
Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows |
title_fullStr |
Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows |
title_full_unstemmed |
Black Wattle (<i>Acacia mearnsii</i>) Condensed Tannins as Feed Additives to Lactating Dairy Cows |
title_sort |
black wattle (<i>acacia mearnsii</i>) condensed tannins as feed additives to lactating dairy cows |
publisher |
MDPI AG |
series |
Animals |
issn |
2076-2615 |
publishDate |
2020-04-01 |
description |
The objective of this study was to evaluate the effects of five levels of condensed tannins (CT) from black wattle (<i>Acacia mearnsii</i>) in the diets of lactating dairy cows on intake, nutrient digestibility, ruminal microbial protein synthesis, milk production, composition, oxidative profile, and blood metabolites. Five Holstein cows (88 ± 26.8 days in milk) were allocated in a 5 x 5 Latin square design for a period of 20 days (14 days of diet adaptation and six for sampling). Treatments were the inclusion levels of CT at 0, 5, 10, 15 and 20 g/kg of dry matter (DM) in the diet. There was no effect of CT on DM intake. The digestibility of DM and neutral detergent fiber changed quadratically, with the maximum values at 12.2 and 11.4 g/kg of DM, respectively. There was no effect on ruminal microbial protein synthesis and milk production; however, milk casein concentration was reduced linearly. There was no effect on the milk oxidative profile. Inclusion of CT at levels up to 20 g/kg of DM did not affect intake or microbial protein synthesis; however, added CT depressed the production of energy corrected milk and milk casein concentration. |
topic |
digestibility intake milk protein polyphenols secondary compounds |
url |
https://www.mdpi.com/2076-2615/10/4/662 |
work_keys_str_mv |
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