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Beef and dairy cattle supplementation in tropical pasture

Grant number: 12/09535-1
Support type:Research Projects - Thematic Grants
Duration: December 01, 2012 - November 30, 2015
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Principal Investigator:Flávio Augusto Portela Santos
Grantee:Flávio Augusto Portela Santos
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Assoc. researchers:Cláudio Vaz Di Mambro Ribeiro ; Dennis Paul Poppi ; Luiz Gustavo Ribeiro Pereira ; Roberto Sartori Filho ; Sila Carneiro da Silva
Associated scholarship(s):12/23288-7 - Interactions between supplementation and pasture management on voluntary intake and ingestive behavior of beef cattle, BP.IC


The objective of this project is to assess the effects of energy supplementation on cattle performance and metabolic variables. This project is divided in two parts with dairy cows and beef cattle supplementation. Three experiments will be conducted in dairy cows (performance and metabolism study), whose focus is the dairy cows in early lactation grazing tropical pasture and supplemented with protected fat. These studies have the purpose to evaluated protected fat sources, doses of fat and fat supplementation associated with corn processing. Milk yield, milk composition, fatty acid profile, pasture intake, total intake, microbial protein, blood variables, ruminal variables and kinetics variables (cannulated cows), mammary gland gene expression, morphological and chemical characterization of pasture, body weight, body condition score, energy balance, efficiency of livestock production. Beef cattle supplementation will evaluate the interaction between grazing management and energy supplementation and the association between levels and sources of the supplement in the rainy season on herbage intake, feeding behavior, ruminal, microbial and blood parameters of Nelore cattle. Seven experiments will be performed with rumen cannulated steers to determine the effects of doses of supplement and supplement source associated with the sward. Finally, all experiments with beef cattle and milk cows will be tested in the in vitro gas production. All data will be analyzed with the SAS statistical package. (AU)

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)
BATISTEL, FERNANDA; DE SOUZA, JONAS; PORTELA SANTOS, FLAVIO AUGUSTO. Corn grain-processing method interacts with calcium salts of palm fatty acids supplementation on milk production and energy balance of early-lactation cows grazing tropical pasture. JOURNAL OF DAIRY SCIENCE, v. 100, n. 7, p. 5343-5357, JUL 2017. Web of Science Citations: 3.
DE SOUZA, JONAS; BATISTEL, FERNANDA; PORTELA SANTOS, FLAVIO AUGUSTO. Effect of sources of calcium salts of fatty acids on production, nutrient digestibility, energy balance, and carryover effects of early lactation grazing dairy cows. JOURNAL OF DAIRY SCIENCE, v. 100, n. 2, p. 1072-1085, FEB 2017. Web of Science Citations: 3.
DE SOUZA, JONAS; BATISTEL, FERNANDA; WELTER, KATIELI CAROLINE; SILVA, MATEUS MENDES; COSTA, DIOGO FLEURY; PORTELA SANTOS, FLAVIO AUGUSTO. Evaluation of external markers to estimate fecal excretion, intake, and digestibility in dairy cows. TROPICAL ANIMAL HEALTH AND PRODUCTION, v. 47, n. 1, p. 265-268, JAN 2015. Web of Science Citations: 11.

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