Performance of intact and castrated nelore steers grazing Brachiaria humidicola (Rendle) Schweick (Poaceae) alone and intercropped with forage peanut
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چکیده
منابع مشابه
Meiotic behavior in nonaploid accessions of Brachiaria humidicola (Poaceae) and implications for breeding.
Brachiaria humidicola is a grass adapted to seasonally swampy grasslands in Africa; two cultivars, 'common' and Llanero, are widely used in Brazilian pastures. New cultivars are in great demand in order to diversify current production systems to achieve improved quality and yield. Cytological analyses of 55 accessions of this species available from the Embrapa Beef Cattle germplasm collection r...
متن کاملOrigin of a polyploid accession of Brachiaria humidicola (Poaceae: Panicoideae: Paniceae).
Brachiaria humidicola, a species adapted to poorly drained and infertile acid soils, is widely used throughout the tropics. Cytological characterization of 54 accessions of B. humidicola for breeding purposes revealed 2n = 36, 42, and 54 chromosomes. One accession (H030), with 2n = 42 chromosomes, showed a different meiotic behavior. In most accessions from the genus Brachiaria previously studi...
متن کاملMeiotic behavior of a nonaploid accession endorses x = 6 for Brachiaria humidicola (Poaceae).
Brachiaria humidicola (Poaceae), originally from Africa, is an economically important pasture plant in tropical South America. An accession of B. humidicola (H038) collected from the wild African savanna (Mbeya, Tanzania) showed irregular microsporogenesis. This meiotic behavior was consistent with an allopolyploid origin. Multivalent chromosome association at diakinesis gave tri- to octavalent...
متن کاملWaterlogging-induced changes in root architecture of germplasm accessions of the tropical forage grass Brachiaria humidicola
Waterlogging is one of the major factors limiting the productivity of pastures in the humid tropics. Brachiaria humidicola is a forage grass commonly used in zones prone to temporary waterlogging. Brachiaria humidicola accessions adapt to waterlogging by increasing aerenchyma in nodal roots above constitutive levels to improve oxygenation of root tissues. In some accessions, waterlogging reduce...
متن کاملThe effect of bermudagrass hybrid on forage characteristics, animal performance, and grazing behavior of beef steers.
Bermudagrass (Cynodon dactylon [L.] Pers.) is a major feed source for ruminants across the southeastern United States. In 4 consecutive yr, 3 different bermudagrass hybrids, Alicia, Jiggs, and Tifton-85, were evaluated under a low stocking rate as forage and hay sources. The nutritive value, in situ DM digestibility, and performance and grazing behavior of beef steers under similar management w...
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ژورنال
عنوان ژورنال: Ciência Animal Brasileira
سال: 2020
ISSN: 1809-6891,1518-2797
DOI: 10.1590/1809-6891v21e-51379