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| Author(s): |
Hugo Lennon Corrêa
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Botucatu. 2021-08-30. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Medicina Veterinária e Zootecnia. Botucatu |
| Defense date: | 2021-08-20 |
| Advisor: | Danilo Domingues Millen; Mario De Beni Arrigoni; Cyntia Ludovico Martins |
| Abstract | |
Feedlot diets are entirely composed of a high proportion of grains, and ground corn is the main energy ingredient in the diet. High energy diets can compromise ruminal parameters, causing instability fermentation processes and consequently harming animal performance. The objective of this research is to evaluate the effect of the inclusion of dry corn gluten feed on feeding behavior, ruminal health and gene expression of the papillae of Nellore cattle finished in feedlot. We used 120 non-castrated Nellore cattle (Bos indicus) with an average initial body weight of 361.66 ± 14.85 kg submitted in a randomized blocks design with four treatments with different levels of inclusion of dry corn gluten feed (0, 18, 36, 54%, dietary DM basis). Were evaluated the effect of diet on feeding behavior, histological and morphology papillae, metabolic and blood hepatic parameters, presence of liver abscesses and the relative expression of mRNA in ruminal papillae of genes related to transport and control of intracellular pH. The data were analyzed using the PROC MIXED procedure of the SAS statistical software (SAS Inst. Inc., Cary, NC, USA) and the CONTRAST option of the SAS to assess linear, quadratic and cubic effects. Means were compared using the Tukey test, with values of P < 0.05 and trend P ≤ 0.10 being considered significant effects. FGMS is a by-product of corn, rich in fiber and high solubility proteins and the highest level of inclusion in the diet contributed to productive performance without negative effects on morphohistological parameters of ruminal papillae, blood metabolites and expression of fatty acid and fatty acid transporter genes of epithelial barrier. Lower expression of inflammatory response receptor genes such as CD14, TLR4 and TNF-α were less expressed in the group of animals fed with FGMS compared to the control group. High inclusion FGMS can partially replace ground corn and fully replace soybean meal without negative effects on dry matter intake, performance and rumen health. (AU) | |
| FAPESP's process: | 18/18002-3 - Dry corn gluten feed in Nelore diet in termination: ingestive behavior, ruminal health and blood metabolic profile |
| Grantee: | Hugo Lennon Correa |
| Support Opportunities: | Scholarships in Brazil - Doctorate |