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RESEARCH ARTICLE
Contents Vol 46(7)

Performance of growing cattle grazing moderate quality legume–grass temperate pastures when offered varying forage allowance with or without grain supplementation

V. Beretta A C , A. Simeone A , J. C. Elizalde B and F. Baldi A
+ Author Affiliations
- Author Affiliations

A Animal Science, University of Uruguay, Ruta 3 km 363, CP. 60000, Paysandú, Uruguay.

B Animal Science, National University of Mar del Plata, CC. 276, 7600 Balcarce, Argentina.

C Corresponding author. Email: beretta@fagro.edu.uy

Australian Journal of Experimental Agriculture 46(7) 793-797 https://doi.org/10.1071/EA05331
Submitted: 18 November 2005  Accepted: 2 May 2006   Published: 8 June 2006

Abstract

This research evaluated the effect of supplementation with cracked corn grain (0 or 1% of liveweight) on the performance of Hereford steers grazing a mixed pasture of legume and grass at 3 forage allowances (3, 6 or 9 kg DM/100 kg liveweight). The experiments were conducted in West Uruguay over 2 consecutive summers, with 72 Hereford steers (282 ± 15.3 kg; n = 36/year) randomly allocated to 1 of the 6 treatments in a factorial arrangement. Cattle were supplemented in individual pens and weighed every 14 days. Grain intake did not differ (P>0.05) between forage allowances. Both supplementing and increasing forage allowance reduced (P<0.01) forage utilisation. Year effect was significant (P<0.01) for liveweight gain and grain intake, but neither the 2- nor the 3-way interaction of year with forage allowance or supplementation was significant (P>0.05). Increasing forage allowance only improved (P<0.01) liveweight gain of non-supplemented cattle (0.299, 0.483, 0.667 kg/day for forage allowance of 3, 6 or 9%, respectively). Hence, response to supplementation decreased with forage allowance, increasing the grain (kg)/gain (kg) conversion ratio. These results provide a quantitative basis on which to decide upon the best feeding management option for summer.

Additional keywords: beef, forage allowance, grain, supplementation.


Acknowledgments

This research was financed by the Instituto Nacional de Investigación Agropecuaria of Uruguay with funds of the Inter-American Development Bank and by the Facultad de Agronomía de la Universidad de la República. The authors wish to acknowledge the assistance of Justino Fernández, Federico Gómez and Ignacio Sarli for their work with animals, forage determinations and samples processing.


References


AOAC (1984) ‘Official methods of analysis.’ 14th edn. (Association of Official Analytical Chemists: Arlington)

Baldi F , Beretta V , Simoene A , Franco J , Feed O (2005) Effect of spring forge allowance on the performance of growing and finishing cattle grazing an improved pasture of west Uruguay. In ‘Proceedings of the 42nd Reuion Annual de la Sociedad Brasileira de Zootencia’. (SBZ: Goiania, Brazil)

Beretta V , Simeone A , Baldi F (2003 a) Spring grazing management of steers and calves on a mixed grass–legume pasture. In ‘Proceedings of the 9th world animal production conference’. p. 68. (SBZ: Porto Alegre)

Beretta V , Simeone A , Elizalde JC , Elizondo L , Gil A , Rubio L (2003 b) Forage intake of Hereford steers grazing a ryegrass pasture at two forage allowances and supplemented with whole or ground maize. In ‘Proceedings of the 9th world animal production conference’. p. 69. (SBZ: Porto Alegre)

Cozzolino D , Pigurina G , Methol M , Acosta Y , Mieres J , Bassewitz H (1994) ‘Guía para la alimentación de ruminates.’ 2nd edn. Serie Técnica 24 (INIA: Montevideo)

Dixon RM, Stockdale CR (1999) Associative effects between forages and grains: consequences for feed utilization. Australian Journal of Agricultural Research 50, 757–773.
| Crossref | GoogleScholarGoogle Scholar | open url image1

French P, O’Riordan EG, Kiely PO, Caffrey J, Moloney AP (2001) Intake and growth of steers offered different allowances of autumn grass and concentrates. Animal Science 72, 129–138. open url image1

Gardner AL (1967) ‘Estudio sobre métodos agronómicos para la evaluación de pasturas.’ (CIAAB, MGAP, IICA: Montevideo)

Goering HK , Van Soest PJ (1970) ‘Forage fibre analyses (apparatus, reagents, procedures and some applications).’ (US Department of Agriculture: Washington DC)

Grainger C, Mathews GI (1989) Positive relation between substitution rates and pasture allowance for cows receiving concentrates. Australian Journal of Experimental Agriculture 29, 355–360.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Grant R , Anderson B , Rasby R , Mader T (1997) ‘NebGuide. Cooperative Extension Institute of Agriculture and Natural Resources.’ (University of Nebraska: Lincoln)

Hodgson JG (1990) ‘Grazing management: science into practice’. (John Wiley & Sons: New York)

Mendez D, Davies P (2001) El otoño y las bajas ganacias de peso. Revista AACREA 246, 54–59. open url image1

Moore JE, Brant MH, Kunkle WE, Hopkins DI (1999) Effects of supplementation on voluntary forage intake, diet digestibility, and animal performance. Journal of Animal Science 77, 122–135.
| PubMed |
open url image1

Nicol AM , Nicoll GB (1987) Pastures for beef cattle. In ‘Feeding livestock on pasture.’ (Ed. AM Nicol). pp. 119–131. Occasional publication, 10. (New Zealand Society of Animal Production: Hamilton)

NRC (1996) ‘Nutrient requirements of beef cattle.’ 6th edn. (National Academy Press: Washington DC)

Risso DF , Ahunchain M , Cibils R , Zarza A (1991) Suplementación en invernadas del litoral. In ‘Pasturas y producción animal en áreas de ganadería intensiva.’ Serie técnica 15. (Ed. INIA) pp. 51–65. (INIA: Montevideo)

Simeone A (2000) Producción Intensiva de Carne (II). Revista de Fucrea 205, 16–19. open url image1

Simeone A, Beretta V, Rowe J, Nolan J, Elizalde JC (2002) Getting cattle to grow faster on lush autumn pastures. Animal Production in Australia 24, 213–216. open url image1

Simeone A, Beretta V, Rowe J, Nolan J, Elizalde JC (2003) Whole or ground grain maize for cattle grazing annual ryegrass. Recent Advances in Animal Nutrition in Australia 12, 15A. open url image1

Standing Committee on Agriculture (1990) ‘Feeding standards for Australian livestock. Ruminants.’ (CSIRO Publishing: Melbourne)

Wachenheim CJ, Black JR, Schlegel ML, Rust SR (2000) Grazing methods and stocking rates for direct-seeded alfalfa pastures: III. Economics of alternative stocking rates for alfalfa pastures. Journal of Animal Science 78, 2209–2214.
| PubMed |
open url image1