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Beef and dairy cattle supplementation in tropical pasture


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)

Articles published in Pesquisa FAPESP Magazine about the research grant:
El esfuerzo de Brasil para reducir la huella de carbono de la producción ganadera 
Brazil making efforts to reduce the carbon footprint of livestock 
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Scientific publications (6)
(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)
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, . (12/09535-1)
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, . (12/09535-1)
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, . (12/09535-1)
BATISTEL, FERNANDA; DE SOUZA, JONAS; VAZ PIRES, ALEXANDRE; SANTOS, FLAVIO AUGUSTO PORTELA. Feeding Grazing Dairy Cows With Different Energy Sources on Recovery of Human-Edible Nutrients in Milk and Environmental Impact. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS, v. 5, . (12/09535-1)
AZEVEDO COSTA, DIOGO FLEURY; CORREIA, PAULO SERGIO; REBOUCAS DOREA, JOAO RICARDO; DE SOUZA, JONAS; DE SOUZA CONGIO, GUILHERMO FRANCKLIN; PIRES, ALEXANDRE VAZ; MUNIZ MALAFAIA, PEDRO ANTONIO; DROUILLARD, JAMES; DOS SANTOS DIAS, CARLOS TADEU; LUCHIARI-FILHO, ALBINO; et al. Strategic supplementation of growing cattle on tropical pastures improves nutrient use and animal performance, with fewer days required on the finishing phase. ANIMAL PRODUCTION SCIENCE, v. 61, n. 5, . (12/09535-1)
JADO CHAGAS, LUCAS; DELVEAUX ARAUJO BATALHA, CAMILA; DE ARRUDA CAMARGO DANES, MARINA; MAURICIO SANTOS NETO, JOSE; LOPES MACEDO, FERNANDA; DA SILVA MARQUES, RODRIGO; AUGUSTO PORTELA SANTOS, FLAVIO. Protein supplementation to early lactation dairy cows grazing tropical grass: Performance and ruminal metabolism. ANIMAL SCIENCE JOURNAL, v. 92, n. 1, . (12/09535-1)

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