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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.)

Soybean hulls as feed substitute of ground corn can increase the fiber digestibility and bacterial fibrolytic profile of grazing Nellore steers during the rainy season

Texto completo
Autor(es):
Jose Neto, Antonio [1] ; Granja-Salcedo, Yury Tatiana [1] ; Messana, Juliana Duarte [1] ; Malheiros, Euclides Braga [2] ; Reis, Ricardo Andrade [2] ; Pires, Alexandre Vaz [3] ; Berchielli, Telma Teresinha [2]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Julio de Mesquita Filho, Fac Ciencias Agr & Vet, Dept Zootecnia, Jaboticabal, SP - Brazil
[2] UNESP, Fac Ciencias Agr & Vet, Dept Zootecnia, Jaboticabal, SP - Brazil
[3] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Zootecnia, Piracicaba, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: SEMINA-CIENCIAS AGRARIAS; v. 40, n. 6, 3, p. 3577-3594, NOV-DEC 2019.
Citações Web of Science: 0
Resumo

This study aimed to evaluate the effect of replacement of ground corn by soybean hulls associated or not to whole soybean grain in the feed supplement on intake, nutrient digestibility, rumen microbial population, and fermentation parameters of growing Nellore steers grazing Brachiaria brizantha cv. Xaraes during rainy season. Were used eight castrated Nellore steers (425 +/- 36 kg of body weight (BW)) fitted with ruminal and duodenal cannulas in a replicated 4 x 4 Latin square with a 2 x 2 factorial arrangement, allocated into 4 paddocks of 0.25 ha each, consisting of Brachiaria brizantha cv. Xaraes and supplemented with: (1) ground corn combined with whole soybean grain (SG); (2) ground corn without SG; (3) soybean hulls (SH) combined with SG; and (4) SH without SG. Supplement intake was no affected by SG or SH (mean 2.12 kg(-1) d, P > 0.05). There were no interactions between SH and SG on DM and nutrients intake (P > 0.05). The addition of SG reduced the dry matter (DM) intake expressed as % of BW and Kg(-1) d, as well forage DM, organic matter (OM), crude protein (CP), neutral detergent fiber (aNDF), and gross energy (GE) intake (P <= 0.01). Animals supplemented with SH without SG had greater digestibility of DM (74.52), OM (77.62), CP (77.51), NDF (71.93) and GE (72.90) than animals supplemented with SH with SG (DM =69.01, OM = 71.92, CP = 72.81, NDF = 66.01, GE =68.00 expressed as % (P <= 0.01). The addition of SG in the supplements declined the ruminal pH and NFL-N (P-0.02). Animals supplemented without SH without SG showed greater Entodinium counts (6.01 n x 10(4) ml(-1), P-0.04), and SG supplementation decreased the numbers of Da.sytricha, Isotricha, and ruminal total protozoa (P < 0.01). The abundance of Runnnococcus albus, R. fiavefaciens, and Archaeas were higher for SH without SG supplement. Additionally, animals supplemented with SG had lower numbers of Fibrobacter succinogenes. The use of soybean hulls without whole soybean grain in the supplement may be effective to increase fiber digestibility, N retained, R. albus and R. flavelaciens in the rumen of Nellore steers grazing Brachiaria brizantha cv. Xaraes during the rainy season. (AU)

Processo FAPESP: 13/23851-6 - Métodos de extração de DNA para o estudo da população microbiana ruminal em bovinos alimentados com glicerina associado ao óleo
Beneficiário:Yury Tatiana Granja Salcedo
Linha de fomento: Bolsas no Brasil - Doutorado
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: 12/08284-5 - Glicerina bruta da agroindústria do biodiesel associada à fontes energéticas na dieta de novilhos de corte suplementados em pastagem de capim-xaraés
Beneficiário:Antônio José Neto
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 14/09033-1 - Meta-análise dos efeitos de dietas com lipídios, glicerina e da associação de ambos na fermentação ruminal e eficiência alimentar de bovinos de corte em pasto ou confinamento
Beneficiário:Juliana Duarte Messana
Linha de fomento: Bolsas no Brasil - Pós-Doutorado