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Effects of whole cottonseed in finishing Nelore feedlot cattle diets on performance, carcass characteristics, ruminal metabolism and nutrients digestibility.

Grant number: 12/14289-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): September 01, 2012
Effective date (End): December 31, 2015
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Principal Investigator:Alexandre Vaz Pires
Grantee:Vinícius Nunes de Gouvêa
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):13/19240-1 - Performance of transition dairy cows dosed with Megasphaera elsdenii, BE.EP.DR


The project aims to assess the use of different levels of whole cottonseed in diets containing high levels of concentrate for Nellore cattle finished in feedlot. For this, three experiments will be conducted. In experiment 1 (performance) will be assessed 5 levels of inclusion of whole cottonseed (0, 8, 16, 24 and 32%) in dry matter (DM) of diets (isonitrogenous) containing 85% concentrate. Will be used 300 Nelore bulls to evaluate performance (DM intake, daily weight gain and feed efficiency) of the quantitative data of the carcass (hot carcass weight, cold carcass weight, dressing percentage, ribeye area, thickness of sub-cutaneous fat and pH) and meat quality (fatty acid profile, flavor (sensory analysis), composition, color, shelf life, and gossypol content of cholesterol), and sanguíeos parameters (glucose, insulin, triglycerides, cholesterol and liver enzyme gamma-glutamyl transferase). In experiment 2 (metabolism) will be used five steers Nellore, cannulated in the rumen and allotted to a 5x5 Latin square design. Will be assessed the same five levels of inclusion of whole cottonseed in the diets of experiment 1 on dry matter intake, nutrient digestibility, ruminal parameters (pH, production of volatile fatty acids and ammonia), the synthesis of microbial protein the blood parameters (glucose, plasma urea, insulin and cholesterol), excretion and nitrogen balance, and ingestive behavior of animals. In experiment 3 (in situ) will evaluate the kinetics of in situ ruminal degradation of DM, neutral detergent fiber (NDF), acid detergent fiber (ADF)and crude protein (CP) of diets

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)
DE GOUVEA, VINICIUS NUNES; BIEHL, MARCOS VINICIUS; ANDRADE, TIAGO SERGIO; DE CASTRO FERRAZ JUNIOR JUNIOR, MARCOS VINICIUS; FERREIRA, EVANDRO MAIA; POLIZEL, DANIEL MONTANHER; ANTONELO, DANIEL SILVA; BRIDI, ANA MARIA; OWENS, FREDERIC N.; PIRES, ALEXANDRE VAZ. Effects of soybean oil or various levels of whole cottonseed on growth performance, carcass traits, and meat quality of finishing bulls. LIVESTOCK SCIENCE, v. 232, FEB 2020. Web of Science Citations: 0.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
GOUVÊA, Vinícius Nunes de. Whole cottonseed in high concentrate diets for finishing Nellore beef cattle. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia Pirassununga.

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