In Situ and in Vitro Nutritive Value Assessment of Styrax Officinalis L. as an Alternative Forage Source for Goat Feeding

Authors : Selim ESEN, Fisun KOC, Levent ÖZDÜVEN, Hüseyin ESECELİ, Evren CABİ, Harun KARADAĞ

Pages : 181-188

Doi:10.15832/ankutbd.871650

View : 21 | Download : 8

Publication Date : 2022-04-25

Article Type : Research Paper

Abstract :The current study aimed to determine Styrax officinalis L. insert ignore into journalissuearticles values(SO); leaf`s nutritive value, collected at four phenological stages, pre-flowering insert ignore into journalissuearticles values(PF);, flowering insert ignore into journalissuearticles values(FL);, seed linkage insert ignore into journalissuearticles values(SL);, and fruiting insert ignore into journalissuearticles values(FR); by in situ and in vitro experiments. The ruminal degradability of dry matter insert ignore into journalissuearticles values(DM); and crude protein insert ignore into journalissuearticles values(CP); and in vitro gas production insert ignore into journalissuearticles values(GP); of SO leaves were measured using three rumen fistulated mature Saanen goats. Significant differences between chemical compositions of the SO leaves collected at different phenological stages were observed insert ignore into journalissuearticles values(P<0.001);. The DM, CP, ether extract insert ignore into journalissuearticles values(EE);, and ash values of SO leaves ranged between 29.16 to 45.63%, 10.11 to 19.79%, 3.40 to 5.85%, and 4.71 to 6.49% during the different phenological stages insert ignore into journalissuearticles values(PF, FL, SL and FR, respectively);. Cell wall components of SO leaves showed a cubic trend due to their capability to form new shoots after grazing. The effective DM and CP degradability of SO leaves ranged between 66.91 to 77.93% and 64.92 to 84.57%, which means an average value for animals fed at approximately maintenance level when rumen outflow rate insert ignore into journalissuearticles values(r); is equal to 0.02 h−1. Significant differences between the SO leaves collected at different phenological stages were observed in GP at all incubation times insert ignore into journalissuearticles values(P<0.05 and P<0.001);. After 96 h incubation, the gas produced ranged between 20.68 to 27.53 mL/200 mg DM of the substrate. The research findings clearly indicate that degradability of DM, CP, and ME content of SO leaves ranged between moderate to high and significantly affected by phenological stages, however, they could be utilized until the end of the FL stage as forage sources.
Keywords : Styrax officinalis L leaves, ruminal degradability, digestibility, gas production, chemical composition