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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of nutritional management prior to adaptation to a feedlot diet on ruminal microbiota of Nellore cattle

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Author(s):
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Ana Carolina Janssen Pinto [1] ; Gustavo Perina Bertoldi [2] ; Luana Doretto Felizari [3] ; Breno Leite Demartini [4] ; Evandro Fernando Ferreira Dias [5] ; Mariana Martins Squizatti [6] ; Antonio Marcos Silvestre [7] ; Flavio Perna Junior [8] ; Lígia Garcia Mesquita [9] ; Johnny Maciel Souza [10] ; Paulo Henrique Mazza Rodrigues [11] ; Gustavo D. Cruz [12] ; Danilo Domingues Millen [13]
Total Authors: 13
Affiliation:
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[1] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[2] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Tecnológicas - Brasil
[3] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[4] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[5] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Tecnológicas - Brasil
[6] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[7] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[8] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[9] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[10] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Tecnológicas - Brasil
[11] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[12] Purina Animal Nutrition LLC - Estados Unidos
[13] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Tecnológicas - Brasil
Total Affiliations: 13
Document type: Journal article
Source: REVISTA BRASILEIRA DE ZOOTECNIA-BRAZILIAN JOURNAL OF ANIMAL SCIENCE; v. 52, 2023-08-25.
Abstract

ABSTRACT The objective of this study was to evaluate the effect of either a limited forage intake or concentrate supplementation prior to the adaptation to high-concentrate diets on dry matter intake, ruminal pH, bacteria, and protozoa of Nellore cattle. The experiment was designed as a two 3×3 Latin square, and six cannulated Nellore steers were used. Each experimental period was composed by three feeding phases: pre-adaptation (14 days), adaptation (12 days), and finishing (seven days) diet, in a total of 33 days per period. The steers were assigned to one of three pre-adaptation dietary treatments: control (Tifton hay fed ad libitum + mineral supplement), restriction (Tifton hay fed at 1.4% of BW + mineral supplement), and concentrate (Tifton hay fed ad libitum + 0.5% of BW of a mix of concentrate feedstuffs and mineral supplement). The adaptation period consisted of two adaptation diets, which contained 72 and 79% concentrate for six days each. The finishing diet contained 86% concentrate. During the pre-adaptation phase, restricted cattle had higher pH than concentrate-fed cattle. There was a reduction in M. elsdenii relative population in cattle from either restriction or concentrate groups. During adaptation and finishing phases, cattle from concentrate group had smaller F. succinogenes populations compared with the control group. The previous nutritional backgrounds impact ruminal microbiota during adaptation and finishing phases without causing any negative effect on ruminal pH. Feeding concentrate prior to the adaptation positively impacted the transition to high-concentrate diets and promoted increased dry matter intake. (AU)

FAPESP's process: 14/26210-4 - Adaptation to high-energy diets for Nellore cattle previously submitted to either nutritional restriction or intake of concentrate feedstuffs
Grantee:Danilo Domingues Millen
Support Opportunities: Regular Research Grants
FAPESP's process: 15/00106-9 - Effect of either nutritional restriction or intake of concentrate feedstuffs on adaptation time, feedlot performance, feeding behavior, ruminal health and carcass characteristics of Nellore cattle
Grantee:Murillo Ceola Stefano Pereira
Support Opportunities: Scholarships in Brazil - Doctorate