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首页> 外文期刊>Tropical Animal Health and Production >Productive performance and urinary excretion of mimosine metabolites by hair sheep grazing in a silvopastoral system with high densities of Leucaena leucocephala
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Productive performance and urinary excretion of mimosine metabolites by hair sheep grazing in a silvopastoral system with high densities of Leucaena leucocephala

机译：高密度白带银耳牧草系统中放牧绵羊的放牧绵羊的含羞草代谢物的生产性能和尿排泄

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摘要

The aim of this study was to evaluate daily weight gain (DWG), total dry matter (DM) intake, rumen degradability of forage, and urinary excretion of mimosine metabolites by hair sheep in a silvopastoral system with high densities of Leucaena leucocephala. A completely randomized design was carried out with two treatments: treatment 1 (T1) silvopastoral system with leucaena at a density of 35,000 plants/ha and treatment 2 (T2), leucaena at a density of 55,000 plants/ha. Leucaena was associated with tropical grasses Panicum maximum and Cynodon nlemfluensis. Twenty-four male Pelibuey lambs of 23.2 ± 3.4 kg live weight (LW) were used (12 lambs per treatment). Results showed differences (P < 0.05) in DWG of T1 (106.41 ± 11.66 g?1 sheep?1) with respect to that of T2 (81.33 ± 11.81 g?1 sheep). Voluntary intake was higher in lambs from T1 (83.81 ± 04.07 g DM/kg LW0.75) with respect to that from T2 (71.67 ± 8.12 g DM/kg LW0.75). There was a difference in color of urine between sheep of T1 and T2, the latter giving positive results for the presence of metabolites derived from mimosine (3-4 dihydroxypyridine and 2-3 dihydroxy pyridone). Rumen degradability of DM of L. leucocephala was higher (P < 0.05) compared to that of P. maximum and C. nlemfluensis (72.94 ± 0.40 vs. 67.06 ± 1.50 and 63.25 ± 1.51 %, respectively). It is concluded that grazing at high densities of L. leucocephala affects daily weight gain of hair sheep, possibly due to ingestion of high amounts of mimosine which may exert an adverse effect on voluntary intake.
机译：这项研究的目的是评估在高密度白带银耳牧草系统中，毛羊的日增重（DWG），总干物质（DM）摄入量，瘤胃的瘤胃降解性以及含草绵羊的含羞草代谢物的尿排泄量。用两种处理进行了完全随机的设计：处理1（T1）的银牧草系统，密度为35,000株/公顷的白桦和处理2（T2），密度为55,000株/公顷的白斑。银合欢与热带草Panicum maximum和犬齿草Nymfluensis有关。使用二十四只雄性Pelibuey羔羊，每头活重（LW）为23.2±3.4千克（每次处理12只）。结果显示，T1（106.41±11.66 g？1 绵羊？1 ）的DWG与T2（81.33±11.81 g？1 绵羊）的DWG差异（P <0.05）。 。 T1羔羊的自愿摄入量较高（83.81±04.07 g DM / kg LW0.75 ），高于T2羔羊的自愿摄入量（71.67±8.12 g DM / kg LW0.75 ）。 T1和T2绵羊之间的尿液颜色有所不同，后者对源自含羞草的代谢物（3-4二羟基吡啶和2-3二羟基吡啶酮）的存在给出了积极的结果。与最大假单胞菌和C. nlemfluensis相比，白头参DM的瘤胃降解率更高（P <0.05）（分别为72.94±0.40和67.06±1.50和63.25±1.51％）。结论是，高密度白头翁放牧会影响毛羊的日增重，这可能是由于摄入大量的含羞草而造成的，这会对自愿摄入产生不利影响。

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  • 来源
    《Tropical Animal Health and Production》 |2012年第8期|1873-1878|共6页
  • 作者

    Marcos Barros-Rodríguez; Javier Solorio-Sánchez; Juan Ku-Vera; Armín Ayala-Burgos; Carlos Sandoval-Castro; Georgina Solís-Pérez;

  • 作者单位

    Departamento de Nutrición Animal Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma de Yucatán Carretera Mérida-Xmatkuil km 15.5. Apdo. 4-116 Itzimná C.P. 97100 Mérida Yucatán México;

    Departamento de Nutrición Animal Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma de Yucatán Carretera Mérida-Xmatkuil km 15.5. Apdo. 4-116 Itzimná C.P. 97100 Mérida Yucatán México;

    Departamento de Nutrición Animal Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma de Yucatán Carretera Mérida-Xmatkuil km 15.5. Apdo. 4-116 Itzimná C.P. 97100 Mérida Yucatán México;

    Departamento de Nutrición Animal Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma de Yucatán Carretera Mérida-Xmatkuil km 15.5. Apdo. 4-116 Itzimná C.P. 97100 Mérida Yucatán México;

    Departamento de Nutrición Animal Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma de Yucatán Carretera Mérida-Xmatkuil km 15.5. Apdo. 4-116 Itzimná C.P. 97100 Mérida Yucatán México;

    Departamento de Nutrición Animal Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma de Yucatán Carretera Mérida-Xmatkuil km 15.5. Apdo. 4-116 Itzimná C.P. 97100 Mérida Yucatán México;

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  • 正文语种 eng
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  • 关键词

    Sheep; L. leucocephala; Mimosine; Intensive silvopastoral systems;

    机译：绵羊;L。白脑;含羞草;密集的眼睑-乳腺系统;

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