NDLI: Valor nutritivo del pasto estrella solo y en asociación con leucaena a diferentes edades de corte durante el año

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Valor nutritivo del pasto estrella solo y en asociación con leucaena a diferentes edades de corte durante el año

Content Provider	Semantic Scholar
Author	Maya, German Eduardo Durán, C. Carlos V. Ararat, José Enrique
Copyright Year	2005
Abstract	Se evaluaron hojas (H), tallo (T) y planta entera de pasto estrella Cynodon nlemfuensis solo y asociado con Leucaena leucocephala a 28, 35 y 42 dias de corte en la hacienda Lucerna, norte del Valle del Cauca, Colombia (960 msnm, 24°C, 1100 mm/ano, humedad relativa 75-80%, evaporacion promedia diaria al ano de 3.6 mm). Se utilizo el metodo de subparcelas divididas, teniendo en cuenta dos epocas secas (apoyadas con riego) y dos lluviosas. En proteina cruda (PC) estrella asociada supero a estrella sola (14.48 vs 11.90; 13.60 vs 10.98; 11.68 vs 9.67%) a los 28, 35 y 42 dias, mientras que leucaena fue estable (29.88, 29.31 y 29.01%). La proteina verdadera (PV) tendio a ser mayor que nitrogeno no proteico (NNP) en estrella asociada y leucaena. Extracto etereo (EE), fibra cruda (FC), cenizas y extracto libre de nitrogeno (ELN) no tuvieron diferencias significativas entre estrella sola y asociada. Entre especies hubo diferencias (P<0.05) en FC y cenizas. En fibra detergente acida (FDA) y fibra detergente neutra (FDN) leucaena presento en general diferencias (P<0.05) para H+T y H. En digestibilidad in situ de materia seca (DISMS) a los 35 dias estrella asociada fue mayor que sola sin ser significativo; leucaena fue mas digestible (P<0.05) que estrella sola y asociada para H+T y H a los 28 dias y en energia metabolizable (EM) fue superior para H+T a 28, 35 y 42 dias y H a 28 y 35 dias. Entre estrella sola y asociada hubo significancia (P<0.05) a los 42 dias en H+T. El sistema estrella+leucaena fue superior a los 35 dias. Abstract Nutritive value of stargrass Cynodon nlemfuensis pure and in association with leucaen Leucaena leucocephala at different ages during year. Pure stargrass and associated with leucaen at 28, 35 and 42 days of cutting were evaluated at â€œ Lucerna â€œ farm, north of Cauca Valley, Colombia (960 m.a.s.l., 24°C, 1100 mm/year, relative humidity 75-80%, average 3.6 mm of daily evaporation during year). The method of divided subparcelas was used, in two dry seasons (supported by irrigation) and two of rains seasons. In crude protein (CP) associated stargrass was respect of pure one (14.48 and 11.90; 13.60 and 10.98; 11.68 and 9.67%) at 28, 35 and 42 days, leucaen was stable (29.88, 29.31 and 29.01%). True protein (TP), have more values than non-proteic nitrogen (NPN) for the associated components star and leucaena regarding pure stargrass. Ethereal extract (EE), crude fiber (CF), ash, and free-nitrogen extract (FNE) have not significant differences among pure and associated stargrass. Among species there were only differences (P<0.05) in CF and ash. In general, in acid and neutral detergent fiber (ADF and NDF), leucaen presented differences (P<0.05) for entire plant (L+S) and leaf (L). In situ digestibility dry matter (ISDDM) at 35 days associate stargrass was to pure one without being significant. Leucaen was more digestible (P < 0.05) that pure and associated stargrass for (L+S) and (L) at 28 days and in metabolizable energy (ME) it were superior for L+S at 28, 35 and 42 days and L at 28 and 35 days. Among pure and associated stargrass there was significance (P<0.05) at 42 days in L+S. The stargrass+leucaen system was superior at 35 days. Key words: associated system, Cynodon nlemfuensis, Leucaena leucocephala, nutritive value, Neutral Detergent Fiber, Acid Detergent Fiber, digestibility, ISDDM, metabolizable energy, Cauca Valley, Colombia, entire plant, fraction, leaf, stem.
Starting Page	41
Ending Page	46
Page Count	6
File Format	PDF HTM / HTML
Volume Number	54
Alternate Webpage(s)	http://www.bdigital.unal.edu.co/5062/1/carlosvicentedurancastro.2005.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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