Productive parameter of a winter pasture submitted to alternatives of utilization

Revista Brasileira de Zootecnia

Montagner, Denise Baptaglin²  Santos, Davi Teixeira dos²  Rocha, Marta Gomes da²  Pilau, Alcides²  Freitas, Fabiana Kellermann de²  Frizzo, Adriana¹ 

[1]UFRGS

[2]UFSM

关键词: oats;    ryegrass;    sorghum;    nitrogen;    herbage production    IntroduçãoEntre as forrageiras cultivadas de inverno no Rio Grande do Sul;    os grandes destaques são a aveia preta (Avena strigosa Schreb) e o azevém (Lolium multiflorum Lam) (Moraes et al;   

DOI  :  10.1590/S1516-35982004000600005

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

This trial was developed with aim of evaluating the productive parameters of a pasture of oat (Avena strigosa Schreb) and Italian Ryegrass (Lolium multiflorum Lam.) submitted to alternatives of utilization. The treatments were: 1 'Supplement': pasture of oat + ryegrass + animals fed energy supplementt in a daily quantity of 1.0% of live weight (LW) with nitrogen (N) fertilization of 150 kg/ha; 2 'Nitrogen': pasture of oat + ryegrass with N fertilization of 300 kg/ha; 3 'Pasture': pasture of oat + ryegrass with N fertilization of 150 kg/ha. The experimental animals were ninety-four beef heifers of the breed Charolais and their crosses with Nellore, with initial weight of 197 kg. The continuous grazing method with variable stocking rate was used. The herbage mass (HM), accumulation daily rate (ADR), total production of forage (TPF), herbage losses (HL) in kg/ha of dry mater (DM) and in percent of live weight (%LW) were evaluated. In the botanical composition of pasture, blade leaf of oat mass (BLM), blade leaf of ryegrass mass (BLR), stem mass (SM), ryegrass inflorescence mass (RIM) and dead material mass (DMM) were evaluated. The green material availability (GMA) and leaf blade availability (LBA) were evaluated by using HM. There was not observed difference among treatments evaluated for HM, GMA, ADR TPF and HL in kg/ha of DM and %LW. The treatments Nitrogen and Supplement presented greater contribution of green leaf than Pasture treatment.

【 授权许可】

CC BY-NC