Forage systems mixed with forage legumes grazed by lactating cows/Sistemas forrageiros consorciados com leguminosas sob pastej com vacas em lactacao

Current research evaluates productivity, stocking and nutritional rates of three forage systems with Elephant Grass (EG) + Italian Ryegrass (IR) + Spontaneous Growth Species (SGS), without forage legumes; EG + IR + SGS + Forage Peanut (FP), mixed with FP; and EG + IR + SGS + Red Clover (RC), mixed w...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Acta scientiarum. Animal sciences 2017-01, Vol.39 (1), p.19
Hauptverfasser: Olivo, Clair Jorge, Diehl, Michelle Schalemberg, Agnolin, Carlos Alberto, Bratz, Vinicius Felipe, Aguirre, Priscila Flores, Sauter, Caroline Paim
Format: Artikel
Sprache:spa
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Current research evaluates productivity, stocking and nutritional rates of three forage systems with Elephant Grass (EG) + Italian Ryegrass (IR) + Spontaneous Growth Species (SGS), without forage legumes; EG + IR + SGS + Forage Peanut (FP), mixed with FP; and EG + IR + SGS + Red Clover (RC), mixed with RC, in rotational grazing method by lactating cows. IR developed between rows of EG. FP was maintained, whilst RC was sow to respective forage systems. The experimental design was completely randomized, with three treatments and two replication, subdivided into parcels over time. Mean rate for forage yield and average stocking rate were 10.6, 11.6 and 14.4 t [ha.sup.-1]; 3.0, 2.8 and 3.1 animal unit [ha.sup.-1] [day.sup.-1], for the respective systems. Levels of crude protein and total digestible nutrients were 17.8, 18.7 and 17.5%; 66.5, 66.8 and 64.8%, for the respective forage systems. The presence of RC results in better and higher forage yield in the mixture, whilst FP results in greater control of SGS. The inclusion of forage legumes in pasture systems provides better nutritional rates. Keywords: Arachis pintoi, Lolium multiflorum, Pennisetum purpureum, rotational grazing, Trifolium pratense. O objetivo nesta pesquisa foi avaliar a produtividade, a taxa de lotacao e o valor nutritivo de tres sistemas forrageiros: capim elefante (CE) + azevem (AZ) + especies de crescimento espontaneo (ECE), sem leguminosa; CE + AZ + ECE + amendoim forrageiro (AM), consorcio com AM; e CE + AZ + ECE + trevo vermelho (TV), consorcio com TV, em pastejo com lotacao rotacionada utilizando vacas em lactacao. Possibilitou-se o desenvolvimento do AZ entre as touceiras de CE. O AM foi preservado na area e o TV foi semeado, respectivamente para os sistemas forrageiros. O delineamento experimental foi inteiramente casualizado, com tres tratamentos, duas repeticoes e parcelas subdividas no tempo. Os valores medios de producao e das taxas de lotacao foram de 10,6; 11,6 e 14,4 t [ha.sup.-1]; 3,0; 2,8; e 3,1 unidades animal [ha.sup.-1] dia-1, para os respectivos sistemas. Os teores de proteina bruta e de nutrientes digestiveis totais foram de 17,77; 18,70 e 17,45%; 66,47; 66,77 e 64,76% para os respectivos sistemas. O consorcio com TV resulta em melhor e maior producao de forragem, enquanto o consorcio com AM resulta em melhor controle de ECE. A inclusao de leguminosas forrageiras implica em melhor valor nutritivo do pasto. Palavras-chave: Arachis pintoi, Lolium multiflorum, lotacao ro
ISSN:1806-2636
DOI:10.4025/actascianimsci.v39i1.32300