Intake, digestibility and nitrogen utilization in cattle fed tropical forage and supplemented with protein in the rumen, abomasum, or both

Journal of Animal Science and Biotechnology
Luana Marta de Almeida RufinoMário Fonseca Paulino

Abstract

There is little information in the tropics with regard the comparative understanding of how an increased nitrogen supply in the rumen or in the intestines affects efficiency of nitrogen utilization in cattle. This study evaluated the effects of supplementation with nitrogenous compounds in the rumen, abomasum, or both on intake, digestibility and the characteristics of nitrogen utilization in cattle fed tropical forage. Four rumen- and abomasum-fistulated Nellore bulls (227 ± 11 kg) were used. Four treatments were evaluated: control, ruminal supplementation (230 g/d of supplemental protein in the rumen), abomasal supplementation (230 g/d of supplemental protein in the abomasum), and ruminal and abomasal supplementation (115 g/d protein in both the rumen and the abomasum). The basal forage diet consisted of Tifton 85 hay with a crude protein (CP) level of 78.4 g/kg dry matter. Casein was used as a supplement. The experiment was conducted using a 4 × 4 Latin square. There were no differences between the treatments (P > 0.10) with regard to forage intake. The intake and total digestibility of CP increased (P < 0.01) with supplementation. The nitrogen balance in the body increased (P < 0.01) and muscle protein mobilization decrease...Continue Reading

References

Sep 1, 1990·Journal of Animal Science·S J JonesJ D Crouse
Mar 20, 2003·Journal of Animal Science·J C Marini, M E Van Amburgh
Aug 5, 2004·Journal of Dairy Science·G A BroderickA Lapins
May 11, 2006·Public Health Nutrition·John C Waterlow
Apr 24, 2010·Tropical Animal Health and Production·Claudia B SampaioAugusto C de Queiroz

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Citations

Jun 14, 2017·Journal of Animal Physiology and Animal Nutrition·H M ArelovichH E Laborde
Dec 14, 2017·Tropical Animal Health and Production·Renata Pereira da Silva-MarquesLuciano da Silva Cabral
Oct 15, 2019·Animal : an International Journal of Animal Bioscience·T R AmorimM I Marcondes
Jun 26, 2020·The British Journal of Nutrition·Cristhiane V R de OliveiraEdenio Detmann
Feb 29, 2020·Asian-Australasian Journal of Animal Sciences·Felipe Henrique de MouraMarcio de Souza Duarte
Mar 26, 2021·Tropical Animal Health and Production·David Esteban Contreras MarquezAndrés Gilberto Calderón Cadena

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Methods Mentioned

BETA
urine collection

Software Mentioned

INCT
SAS
CA

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