Citrus pulp replacing corn in the supplement decreased fibre digestibility with no impacts on performance of cattle grazing Marandu palisade grass in the wet-dry transition period.pdf (671.45 kB)
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Citrus pulp replacing corn in the supplement decreased fibre digestibility with no impacts on performance of cattle grazing Marandu palisade grass in the wet-dry transition period

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posted on 22.11.2022, 01:59 authored by AA de Oliveira, EP Romanzini, Diogo Fleury Azevedo CostaDiogo Fleury Azevedo Costa, RP Barbero, MV Azenha, JF Lage, AC Ruggieri, RA Reis
The wet-dry transition period brings unique challenges to cattle producers in the tropics as the forage quality starts to decrease and animal performance is negatively affected unless supple-mentation strategies are applied. Two experiments were conducted concomitantly to evaluate the performance and metabolic parameters of cattle supplemented with two different energy sources under a C4 tropical grass continuous grazing system in the wet-dry transition period. In experiment (exp) 1, the liveweight (LW) gain of 42 growing Bos indicus Nellore bulls allocated to 12 paddocks of Uruchloa brizantha cv. Marandu, in a completely randomized block design, was evaluated to compare corn and citrus pulp-based supplements offered at 0.5% LW. Metabolism was evaluated in exp 2 with eight rumen-cannulated Nellore steers in an incomplete replicated Latin square design (RLSD) 4 × 2 (steers × treatment) fed the same two treatments as in exp 1. No differences in animal performance were observed between corn or citrus pulp-based supplements. Rumen pH, ammonia nitrogen, and blood urea nitrogen were lower in the rumen of animals supplemented with citrus pulp. Despite this, there were no differences in total dry matter intake amongst the two energy sources. The neutral detergent fibre digestibility of the diet containing corn decreased, but it neither affected performance nor liveweight gain per area. The findings suggest that corn can be replaced by citrus pulp with neither detrimental effects on animal performance nor indirect effects on pastures productivity.

Funding

Category 3 - Industry and Other Research Income

History

Volume

12

Issue

7

Start Page

1

End Page

15

Number of Pages

15

eISSN

2076-2615

ISSN

2076-2615

Publisher

MDPI

Publisher License

CC BY

Additional Rights

CC BY 4.0

Language

en

Peer Reviewed

Yes

Open Access

Yes

Acceptance Date

22/03/2022

External Author Affiliations

Cargill Animal Nutrition, Premix, Federal Rural University of Rio de Janeiro, São Paulo State University, Brazil;

Author Research Institute

  • Institute for Future Farming Systems

Era Eligible

Yes

Medium

Electronic

Journal

Animals

Article Number

822

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Licence

Exports