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

Forage management intensification and supplementation strategy: Intake and metabolic parameters on beef cattle production

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Delevatti, Lutti Maneck [1] ; Romanzini, Elieder Prates [1] ; Werner Koscheck, Jefferson Fabiano [2] ; da Ross de Araujo, Tiago Luis [1] ; Renesto, Diego Monteira [1] ; Ferrari, Adriana Cristina [1] ; Barbero, Rondineli Pavezzi [3] ; Mulliniks, John Travis [4] ; Reis, Ricardo Andrade [1]
Total Authors: 9
[1] Univ Estadual Paulista Unesp, Fac Ciencias Agr & Vet, Dept Zootecnia, Campus Jaboticabal, BR-14884900 Jaboticabal, SP - Brazil
[2] Trouw Nutr Brasil, BR-78098370 Cuiaba, MT - Brazil
[3] Univ Fed Rural Rio de Janeiro UFRRJ, Inst Zootecnia, Dept Prod Anim, BR-23897000 Seropedica, RJ - Brazil
[4] Univ Nebraska, West Cent Res & Extens Ctr, North Platte, NE 69101 - USA
Total Affiliations: 4
Document type: Journal article
Source: ANIMAL FEED SCIENCE AND TECHNOLOGY; v. 247, p. 74-82, JAN 2019.
Web of Science Citations: 0

Improving animal performance on pasture requires grazing management that optimizes forage intake in combination with the appropriate supplementation strategy. The objective was to determine the effects of sward canopy height and level of supplementation on forage intake, digestibility, and ruminal fermentation kinetics of Nellore steers in a double Latin square design with repeated measures. Treatments were three sward heights with differing levels of supplementation and included: (1) short height with high supplementation (SH-HS, 15 cm and 0.6% SW); (2) short height with moderate supplementation (SH-MS, 15 cm and 0.3% BW); (3) moderate height with moderate supplementation (MH-MS, 25 cm and 0.3% BW); (4) moderate height with low supplementation (MH-LS, 25 cm and 0.1% BW); (5) tall height with low supplementation (TH-LS, 35 cm and 0.1% BW); and (6) tall height with no supplementation (TH-WS, 35 cm). Intake of crude protein and total digestible nutrients was greater (P < 0.05) with tall swards and moderate supplementation rates. Nutrient digestibility among treatments did not differ (P >= 0.21), possibly due to the availability of high-quality forage during the wet season. Likewise, rate of neutral detergent fiber degradability did not differ (P >= 0.19) among treatments. Ruminal ammonia nitrogen differed (P = 0.02) among treatments with moderate supplementation having the greatest (SH-MS) and lowest (MH-MS) concentrations (13.6 and 9.7 mg/dL, respectively). Ruminal pH and volatile fatty acid concentrations did not differ (P > 0.18) among treatments. Microbial N flow to the small intestine and efficiency of microbial synthesis exhibited a quadratic response with moderate sward height treatments having greater values. With these treatments and under the conditions of this study, various combinations of sward height and supplementation level did not alter rumen fermentation kinetics. (AU)

FAPESP's process: 13/25202-5 - Effect of diet and forage species on the metabolic profile of ruminants
Grantee:Rondineli Pavezzi Barbero
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 12/20264-0 - Productive, environmental and economic impacts of strategies supplementation in beef cattle diet under grazing heights and finishing strategies
Grantee:Ricardo Andrade Reis
Support type: Regular Research Grants
FAPESP's process: 13/05894-0 - Intensification of pasture management and supplementation on productive parameters, environmental and economic issues in growing and finishing beef cattle
Grantee:Jefferson Fabiano Werner Koscheck
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/21138-3 - Supplementation of Nellore growing cattle grazing in different intensities on rumen metabolic and nutritional parameters
Grantee:Lutti Maneck Delevatti
Support type: Scholarships in Brazil - Master
FAPESP's process: 12/14956-6 - Impacts productive, environmental and economic of the supplementation strategies of the diet of beef cattle under grazing heights and termination strategies
Grantee:Rondineli Pavezzi Barbero
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/09394-1 - Diets nutritional efficiency of the beef cattle grazing on different heights associated with supplementation
Grantee:Tiago Luís da Ros de Araújo
Support type: Scholarships in Brazil - Master