首页 | 本学科首页   官方微博 | 高级检索  
     


Sheep performance under intensive continuous grazing of native grasslands of Paspalum notatum and Axonopus compressus in the subtropical region of the Highlands of Central Mexico
Authors:F. Avilés-Nova  A. Espinoza-Ortega  O. A. Castelán-Ortega  C. M. Arriaga-Jordán
Affiliation:Centro Universitario UAEM Temascaltepec, Universidad Autónoma del Estado de México, Instituto Literario # 100, 50000, Toluca, Estado de México, México.
Abstract:Liveweight gain was evaluated in tropical Dorper X Pelibuey lambs under intensive continuous grazing of native grasslands dominated by Paspalum notatum (PN) or Axonopus compressus (AC) in the subtropics of Central Mexico. Two trials were undertaken. Trial 1 lasted 12 weeks with 10 lambs (initial weight 18 +/- 2.57 kg, 3 months old) per treatment in 2002, and Trial 2 for 13 weeks with 8 lambs (initial weight 24.0 +/- 2.0 kg, 4 months old) per treatment. Lambs were weighed once per week, and liveweight change was estimated by linear regression over day of the experiment, using individual regression coefficients as unbiased estimates of daily liveweight change; analysed in a random block design. Lambs on Trial 1 gained 0.061 kg/lamb/day on PN and 0.047 kg/lamb/day on AC (P > 0.05) at an overall mean stocking rate of 25 lambs/ha. In Trial 2, liveweight gain was significantly larger in PN (0.060 kg/lamb/day) than on AC (0.043 kg/lamb/day) (P < 0.05), at a mean stocking rate of 21.5 lambs/ha. It is concluded that intensive continuous grazing of native grasslands in the subtropics of the highlands of Central Mexico enables moderate liveweight gains for weaned lambs during the rainy season; with better results in grasslands dominated by Paspalum notatum.
Keywords:Axonopus compressus   Continuous grazing  Tropical hair sheep  Subtropical native grasslands   Paspalum notatum   Mexico
本文献已被 PubMed SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号