ENERGETIC SUPPLEMENTATION ASSOCIATED OR NOT WITH UREA AND/OR MONENSIN FOR BEEF HEIFERS

Authors

  • Paulo Santana Pacheco UFSM
  • João Restle UFG
  • Fernando Kuss
  • Luis Fernando G. Menezes Universidade Tecnológica Federal do Paraná - Campus Dois Vizinhos
  • Joilmaro Pereira Rosa
  • Ivan Luiz Brondani

DOI:

https://doi.org/10.5216/cab.v12i4.11150

Keywords:

Animal Production

Abstract

The effect of energetic supplementation, in the form of grounded oat grain (OT),  associated with urea (OTU), with monensin (OTM), or with urea plus monensin (OTUM),  on the performance of 116 Charolais (C), Nellore (N) and crossbreds with predominance of C (CN) or N (NC) heifers was evaluated during the end of summer (ES) and beginning  of autumn (BA). The 15-month-old heifers, with initial weight of 243.1 kg, were kept on native pasture and supplemented with an amount of .7% of live weight. The average daily weight gain (ADG) was higher for heifers supplemented with the combination OTUM (538 g) in relation to OT (430 g) and OUT (380 g), however it was statistically similar to the combination OTM (488 g). Treatments that included monensin showed higher efficiency of converting the supplement into weight gain. During ES, the ADG was higher than during the BA (525 vs 394 g). For C, CN, N and NC heifers, the ADG during ES was 370, 517, 560 and 691 g and during BA it was 427, 398, 317 and 397 g, respectively. Nellore heifers showed lower live weight than the other genetic groups. Body condition score at the end of ES and BA was higher for CN heifers which did not differ from NC, with C showing intermediate score and N showing the lowest score. The monensin and urea association promotes weight gain of animals kept on native pastures and supplemented with oat grain.

KEYWORDS: Charolais; ionophore; Nellore, oat.

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Published

2011-12-20

How to Cite

PACHECO, P. S.; RESTLE, J.; KUSS, F.; MENEZES, L. F. G.; ROSA, J. P.; BRONDANI, I. L. ENERGETIC SUPPLEMENTATION ASSOCIATED OR NOT WITH UREA AND/OR MONENSIN FOR BEEF HEIFERS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 4, p. 642–652, 2011. DOI: 10.5216/cab.v12i4.11150. Disponível em: https://revistas.ufg.br/vet/article/view/11150. Acesso em: 21 nov. 2024.

Issue

Vol. 12 No. 4 (2011)

Section

Animal Production

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