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Feed efficiency of pregnant Nellore cows and potential of body tissues development of their progenies

Grant number: 18/20080-2
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): December 01, 2018
Effective date (End): March 31, 2021
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Production
Principal researcher:Sarah Figueiredo Martins Bonilha
Grantee:Camila Delveaux Araujo Batalha
Home Institution: Instituto de Zootecnia. Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Nova Odessa , SP, Brazil
Associated research grant:17/50339-5 - Institutional research development plan of the Animal Science Institute (PDIp), AP.PDIP


The phenotypic evaluation of feed efficiency variation in beef cows is essential to increase the knowledge about the impact of more efficient animals use on beef productivity. The present project will be developed with the objective of identifying and quantifying the phenotypic variation of feed efficiency traits in pregnant Nellore cows in order to elucidate the effect of the residual feed intake class to which they belong in the production traits of their calf crops. Sixty Nellore heifers will be evaluated during the first and second pregnancy (until weaning of the second calf), to determine the associations between feed efficiency and skeletal size, body composition (obtained by ultrasonography), calf growth until weaning, and endocrine, energy, protein and mineral metabolism analysing metabolic indicators. The results generated with the development of the project will be important to promote the evaluation, selection and use of animals with higher feed efficiency for meat production.

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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)
ARAUJO BATALHA, CAMILA DELVEAUX; MORELLI, MARCELA; BRANCO, RENATA HELENA; DOS SANTOS GONCALVES CYRILLO, JOSLAINE NOELY; CANESIN, ROBERTA CARRILHO; ZERLOTTI MERCADANTE, MARIA EUGENIA; MARTINS BONILHA, SARAH FIGUEIREDO. Association between residual feed intake, digestion, ingestive behavior, enteric methane emission and nitrogen metabolism in Nellore beef cattle. ANIMAL SCIENCE JOURNAL, v. 91, n. 1, . (18/20080-2, 17/06709-2, 17/50339-5)
LUANA LELIS SOUZA; FLÁVIA CRISTINA BIS; LEANDRO SANNOMIYA SAKAMOTO; DANIELLY FERNANDA BROLEZE; CAMILA DELVEAUX ARAÚJO BATALHA; MARIA EUGÊNIA ZERLOTTI MERCADANTE. Consumo alimentar residual de bezerros Nelore na pré e pós-desmama tem baixa repetibilidade. Ciência Rural, v. 51, n. 6, . (15/02066-4, 18/17313-5, 18/12504-7, 18/20080-2)

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