Author(s): MATIAS, F. I.; BARRIOS, S. C. L.; VALLE, C. B. do; MATEUS, R. G.; MARTINS. L. B.; MORO, G. V.

Summary: The objective of this study was to estimate genetic parameters for agronomic traits and nutritional value in intraspecific hybrids of B. decumbens. For this, a population of 1,415 hybrids was evaluated in field plots at Embrapa Beef Cattle in Campo Grande/MS/Brazil, with seven clippings in order to estimate field green weight (FGW); total dry matter (TDM); speed of regrowth (SR); tiller regrowth density (TRD); regrowth ability (REG); crude protein (CP); in vitro organic matter digestibility (IVD); neutral detergent fiber (NDF) and lignin (LIG). The statistical analyses were carried out using the mixed models methods. Genetic variability for all traits assessed was detected, and estimates of individual heritability were of medium to high magnitude, indicating the possibility of gains with selection. Significant genetic correlations were observed between FGW and TDM (0.99), TDM and SR (0.81), TDM and IVD (-0.71), TDM and LIG (0.71), and CP and IVD (0.70).

Publication year: 2016

Types of publication: Journal article

Unit: Embrapa Beef Cattle

Keywords: Agronomic traits, Brachiaria decumbens, Crude protein, Heritability, Proteina bruta, Recurrent selection, Seleção recorrente, Urochloa decumbens