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Dairy cows fed amylolytic enzymes

Grant number: 15/06108-3
Support Opportunities:Scholarships abroad - Research Internship - Master's degree
Effective date (Start): August 01, 2015
Effective date (End): November 30, 2015
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Principal Investigator:Francisco Palma Rennó
Grantee:Caio Seiti Takiya
Supervisor: Barry Joseph Bradford
Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Kansas State University, United States  
Associated to the scholarship:14/13607-3 - Dairy cows fed amylolytic enzymes, BP.MS


The addition of enzymes in ruminant diet may manipulate ruminal fermentation and become an alternative to increase feed conversion rate. There are few studies in literature evaluating amylolytic enzyme in ruminant nutrition and experimental conditions largely vary between experiments which impairs comparison among studies and difficult a conclusion to dietary amylase response. In recent literature, experiments report the effectiveness of amilolytic enzymes in cow`s performance, with increased milk yield due to increase of nutrients total tract digestion and microbial protein duodenal flow. Therefore, becomes relevant evaluate inclusion of amylolytic enzymes in diet based in corn silage as forage source, which is the most used in Brazil to high yielding dairy cows. In Brazil, research in this area is scarce, and the techniques of laboratory analysis are very outdated compared to developed countries. Moreover, it is of great importance to establish partnerships for improving and learning laboratory analysis techniques related to starch and blood analysis. The hypothesis of experiment was that amylase (AmaizeTM, Alltech Inc., Nicholasville, KY, USA) improve productive performance and metabolism of mid lactating dairy cows. The objective of the present study is to evaluate the effects of increasing doses of amylolytic enzyme in dairy cows feeding on productive performance and metabolism. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
TAKIYA, CAIO S.; CALOMENI, GUSTAVO D.; SILVA, THIAGO HENRIQUE; VENDRAMINI, THIAGO HENRIQUE A.; SILVA, GUILHERME G.; CONSENTINI, CARLOS EDUARDO C.; BERTONI, JESSICA CRISTIANE; ZILIO, ELISSANDRA MAIARA C.; RENNO, FRANCISCO P.. Increasing dietary doses of an Aspergillus oryzae extract with alpha-amylase activity on nutrient digestibility and ruminal fermentation of lactating dairy cows. ANIMAL FEED SCIENCE AND TECHNOLOGY, v. 228, p. 159-167, . (15/06108-3, 14/13607-3)

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