Biochemical evaluation of forage quality from mutant forms Sudan grass (Sorghum sudanense (Piper) Stapf.)

Irena Golubinova, Yordanka Naydenova, Stanimir Enchev, Tsvetan Kikindonov, Anna Ilieva, Plamen Marinov-Serafimov

Abstract: During the period 2014 - 2015, at the Institute of Forage Crops - Pleven two varieties Sudan grass (Endje 1 and Kazitachi) and two mutant forms (M 300/43 and M 200/86) were studied in competitive variety trial conditions regarding their suitability for use as fodder. Feed quality is evaluated by biochemical analyzes including indicators: crude protein (CP), crude fiber (CF) and crude ash. Enzyme in vitro digestibility of dry (IVDMD) and organic matter (IVOMD) and potential protein feeding value were evaluated by general indicators of digestible protein (TDP/PBD), Protein digestible dans l’intestine in dependence of nitrogen (PDIN) and Protein digestible dans l’intestine in dependence of energy (PDIE). In growth stage BBCH-47, average for the period, the biomass of sudangrass is characterized with crude protein content of 10,76 to 11,95% and crude fiber from 24,76 to 25,44 %. Enzymes in vitro digestibility of dry and organic matter average for the period is from 58,90 to 60,38% and organic matter from 61,09 to 65,90%. Mutant form M 300/43 demonstrates the best of quality in composition and digestibility of dry matter.

Keywords: forage quality; in vitro digestibility; selection; Sorghum sudanense; Sudan grass

Date published: 2017-05-18