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Dietary marine algae (Schizochytrium sp.) for feedlot lambs: performance, digestibility and carcass and meat quality

Grant number: 16/02311-1
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): June 01, 2016
Effective date (End): November 30, 2017
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Production
Principal researcher:Américo Garcia da Silva Sobrinho
Grantee:Thiago Henrique Borghi
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

The study will be developed in the Ovine Production Laboratory of the Department of Animal Science, College of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, SP, Brazil. Thirty-two Ile de France lambs, not castrated, with 20.0 ± 0.2 kg will receive the following diets D0: corn silage + concentrate without algae meal; D2: corn silage + concentrate + 2% algae meal; D4: corn silage + concentrate + 4% algae meal and D6: corn silage + concentrate + 6% algae meal with roughage:concentrate ratio 40:60 up to 35.0 ± 0.2 kg of body weight . The objectives will be to evaluate the performance (dry matter intake, body weight gain and feed conversion), nutrient digestibility (DM, OM, CP, EE, NDF, ADF, TC, NFC and GE), nitrogen balance, the quantitative parameters of the carcass (hot and cold carcass yield and chilling loss) and the meat quality (pH, color, water holding capacity, water losses by defrosting and cooking, shear force, number of substances reactive to 2-thiobarbituric acid and sensory analysis), centesimal composition (moisture, protein, fat and minerals), fatty acid profile (intramuscular fat), cholesterol content, activity of the desaturase and elongase enzymes, atherogenicity and thrombogenicity index of the meat from Longissimus muscle and the fatty acid profile of perirrenal, mesenteric and subcutaneous fats. The experimental design will be completely randomized with four treatments and eight replicates, being the comparisons of the treatments by orthogonal contrasts, performed with the assistance of the SAS statistical program, version 9.4. (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)
VALENCA, ROBERTA DE LIMA; DA SILVA SOBRINHO, AMERICO GARCIA; BORGHI, THIAGO HENRIQUE; ROJAS MEZA, DIEGO ARMANDO; DE ANDRADE, NOMAIACI; SILVA, LEONARDO GUIMARAES; BEZERRA, LEILSON ROCHA. Performance, carcass traits, physicochemical properties and fatty acids composition of lamb's meat fed diets with marine microalgae meal (Schizochytrium sp.). LIVESTOCK SCIENCE, v. 243, JAN 2021. Web of Science Citations: 4.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.