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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Mineral salt intake effects on faecal-N concentration and the volume and composition of beef cattle urine

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Autor(es):
Cardoso, Abmael da Silva [1] ; Neto, Antonio Jose [2] ; Azenha, Mariane Vieira [3] ; Morgado, Eliane Silva [4] ; Brito, Liziane de Figueiredo [5] ; Janusckiewicz, Estela Rossetto [6] ; Berchielli, Telma Terezinha [1] ; Reis, Ricardo Andrade [1] ; Ruggieri, Ana Claudia [1]
Número total de Autores: 9
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista UNESP, Fac Ciencias Agr & Vet, Dept Zootecnia, Via Acesso Prof Paulo Donato Castellane, Km 5, BR-14884900 Jaboticabal, SP - Brazil
[2] Nutripura, BR-78705600 Rondonopolis, MT - Brazil
[3] Embrapa Southeast Livestock, BR-13560970 Sao Carlos, SP - Brazil
[4] Univ Fed Uberlandia, Fac Med Vet, BR-38408100 Uberlandia, MG - Brazil
[5] Queensland Univ, Brisbane, Qld - Australia
[6] Univ Estadual Mato Grosso Sul, BR-79804970 Nova Andradina, MS - Brazil
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: TROPICAL ANIMAL HEALTH AND PRODUCTION; v. 51, n. 1, p. 171-177, JAN 2019.
Citações Web of Science: 0
Resumo

The effect of mineral salts on water ingestion and urine volume in cattle has been extensively studied. However, recently, this effect has been investigated as a potential mitigator of environmental aspects related to the nitrogen (N) cycle, such as nitrate (NO3-) lixiviation, ammonia (NH3) volatilisation, and nitrous oxide (N2O) emissions. The effect of mineral salts, particularly sodium chloride (NaCl), on urine-N concentration, urine volume, the proportion of N compounds in the urine, and faecal-N concentration has not yet been explored in field conditions with respect to environmental aspects of beef cattle production. The present study investigated the effect of dietary mineral salt rates on these parameters. A Latin square (5x5) experimental design was utilised with five concentrations of mineral salts in the diet: 0.0, 2.0, 4.0, 6.0, and 8.0g based on dry matter (DM) ingestion (g/kg DM). The nitrogen concentration in the urine and urine volume increased linearly. The total N excreted (g/day) via urine did not vary with increasing mineral salt concentrations. When evaluated, the N compounds of urine (urea-N, allantoin-N, and hippuric acid-N) also reacted to the increased mineral salt concentrations, while creatinine-N did not. Urea-N, allantoin-N, and hippuric acid-N linearly increased their proportions in total N-urine. The N concentration in faeces was not affected by mineral salt concentrations. The urine volume, concentration of N, and proportion of N compounds in the urine affected N2O emissions and NH3 volatilisation. Therefore, mineral salt utilisation may be an option for mitigating N pollution from beef cattle, especially for grasslands in tropical countries. (AU)

Processo FAPESP: 11/00060-8 - Balanço de gases de efeito estufa e estratégias de mitigação em pastos de Brachiaria submetidos a diferentes manejos
Beneficiário:Telma Teresinha Berchielli
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 12/06718-8 - Balanço de nitrogênio, emissão de gases de efeito estufa e mitigação de N2O na produção de bovinos de corte em pastagens
Beneficiário:Abmael da Silva Cardoso
Linha de fomento: Bolsas no Brasil - Doutorado