Forage production and animal performance of Ipyporã and Mulato II Brachiariagrasses under continuous stocking.

In the last two decades breeders have focused on hybridization within the grass genus Brachiaria in order to integrate the most outstanding characteristics of several species to enhance animal performance in forage-livestock system, especially when addressing edaphoclimatic conditions and pest susceptibility. The objective of this study was to compare herbage accumulation, nutritive value, and animal performance of ?Ipyporã? [B. ruziziensis Germ. & Evrard × B. brizantha (Hochst. ex A. Rich.) Stapf] and ?Mulato II? (B. ruziziensis × B. brizantha× B. decumbens Stapf) brachiariagrasses in the Brazilian Amazon biome. All experimental units were continuously stocked using a variable stocking rate from May 2016 to May 2018. Herbage accumulation (HA) was greater in Mulato II (17,370 kg DM ha?1) than Ipyporã (14,930 kg DM ha?1), resulting in 25 and 23% greater stocking rate (SR) and gain ha?1 than Ipyporã, respectively. Herbage allowance did not differ between grasses (averaging 6.52 kg DM kg?1 BW). The crude protein (CP), neutral (NDF), and acid (ADF) detergent fiber concentrations did not differ between cultivars (P > 0.05). Greater annual HA and gain ha-1 for Mulato II support its use in intensive forage-based systems. However, susceptibility of Mulato II to spittlebug requires regular monitoring and treatment in regions like the Amazon biome, where risk of spittlebug damage is great. In contrast, spittlebug-resistant Ipyporã can provide excellent plant and animal response with no spittlebug risk, offering a sustainable alternative to Mulato II for forage diversification.

Bibliographic Details

Main Authors:	PEDREIRA, B. C. e, CARVALHO, A. P., PARAISO, I., SILVA, D., DOMICIANO, L. F., CABRAL, L., PEREIRA, D. H., SOLLENBERGER, L. E.
Other Authors:	BRUNO CARNEIRO E PEDREIRA, CPAMT; ANA PAULA CARVALHO, UFMT, Sinop-MT; ISADORA PARAISO, UFMT, Sinop-MT; DÉBORA SILVA, UFMT, Sinop-MT; LEANDRO FERREIRA DOMICIANO, UFMT, Cuiabá-MT; LUCIANO CABRAL, UFMT, Sinop-MT; DALTON HENRIQUE PEREIRA, UFMT, Sinop-MT; LYNN E. SOLLENBERGER, UNIVERSITY of FLORIDA, Gainsville-FL.
Format:	Anais e Proceedings de eventos biblioteca
Language:	Ingles English
Published:	2021-02-19
Subjects:	Ipyporã, Mulato II, BRS RB331, Mato Grosso, Sinop-MT, Forragem, Brachiaria Ruziziensis, Forage, Animal performance, Amazonia,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130142
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