Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year
In order to evaluate the ruminal degradation of Paspalum notatum (grass pasture) in rumen of bovines at different times of the year, in a field of northeastern Argentina, samples of this pasture were collected at 15, 30 and 45 days of regrowth, were cut and placed 5 g in dacron bags, to be introduce...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Universidad Nacional del Nordeste
2022
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| Materias: | |
| Acceso en línea: | https://revistas.unne.edu.ar/index.php/vet/article/view/6173 |
| Aporte de: |
| id |
I48-R154-article-6173 |
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ojs |
| institution |
Universidad Nacional del Nordeste |
| institution_str |
I-48 |
| repository_str |
R-154 |
| container_title_str |
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| topic |
Paspalum notatum Degradación ruminal Pastizales Anatomía foliar Paspalum notatum Rumen Degradability Grasslands Foliar anatomy |
| spellingShingle |
Paspalum notatum Degradación ruminal Pastizales Anatomía foliar Paspalum notatum Rumen Degradability Grasslands Foliar anatomy Slanac, A. L. Balbuena, O. Peichoto, M. C. Kucseva, C. D. Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| topic_facet |
Paspalum notatum Degradación ruminal Pastizales Anatomía foliar Paspalum notatum Rumen Degradability Grasslands Foliar anatomy |
| author |
Slanac, A. L. Balbuena, O. Peichoto, M. C. Kucseva, C. D. |
| author_facet |
Slanac, A. L. Balbuena, O. Peichoto, M. C. Kucseva, C. D. |
| author_sort |
Slanac, A. L. |
| title |
Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| title_short |
Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| title_full |
Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| title_fullStr |
Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| title_full_unstemmed |
Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| title_sort |
digestion of leaflets of paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year |
| description |
In order to evaluate the ruminal degradation of Paspalum notatum (grass pasture) in rumen of bovines at different times of the year, in a field of northeastern Argentina, samples of this pasture were collected at 15, 30 and 45 days of regrowth, were cut and placed 5 g in dacron bags, to be introduced in the rumen at 120, 72, 48, 24, 12, 6, 3 and 0 hours, and removed at the same time, an aliquot was fixed in acetoalcoholic formalin solution (FAA), dehydrated with acetone and mounted on aluminum foil and metallized for observation in scanning microscope (MEB). The degradation of the tissues was determined according to the state of the cell walls. Four categories were established: D: highly degraded; DA: advanced degradation; PD: partially degraded; ND: not degraded. In autumn, the cut from 15 days to 12 hours, the disappearance of the chlorenchyma (mesophyll) was advanced and the phloem beganto be digested. After 48 hours, some paranchymalcells of the beam sheath remained undigested. At 30 days and 48 hours of incubation, mesophyll and phloem suffered complete degradation. At 45 days instead, he only showed a complete digestion for the chlorenchyme, the phloem presented advanced digestion. In winter, at 24 hours on lythex ylem tissues and abaxial sclerench y maremained. After 48 hours in rumen the only thing not digested was xylem, sclerenchyma and sheath of the beam. The mesophyll and the phloem, at 15 days and 24 hours, were digested 100%, for 30 and 45 days, advanced digestion was observed. In spring, the three ages showed chlorenchyme, phloem, and partially degraded sheath at 12 hours, the 24-hour the reveal e advanced degradation and complete digestion after 48 hours. The xylem, was degraded in it sentir et y to 48 hours of the cut of 15 days, instead for 30 and 45 days, the degradation was advanced . In summer the behavior was similar to spring. In general terms the anatomical characteristics observed, in the thre eages of cut and different seasons were variable fort his species. |
| publisher |
Universidad Nacional del Nordeste |
| publishDate |
2022 |
| url |
https://revistas.unne.edu.ar/index.php/vet/article/view/6173 |
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2023-03-18T23:06:56Z |
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2024-08-21T22:35:42Z |
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I48-R154-article-61732023-06-21T13:06:35Z Digestion of leaflets of Paspalum notatum subjected to different ruminal incubation times in cattle at different times of the year Digestión de láminas foliares de Paspalum notatum sometidas a diferentes tiempos de incubación ruminal en bovinos Slanac, A. L. Balbuena, O. Peichoto, M. C. Kucseva, C. D. Paspalum notatum Degradación ruminal Pastizales Anatomía foliar Paspalum notatum Rumen Degradability Grasslands Foliar anatomy In order to evaluate the ruminal degradation of Paspalum notatum (grass pasture) in rumen of bovines at different times of the year, in a field of northeastern Argentina, samples of this pasture were collected at 15, 30 and 45 days of regrowth, were cut and placed 5 g in dacron bags, to be introduced in the rumen at 120, 72, 48, 24, 12, 6, 3 and 0 hours, and removed at the same time, an aliquot was fixed in acetoalcoholic formalin solution (FAA), dehydrated with acetone and mounted on aluminum foil and metallized for observation in scanning microscope (MEB). The degradation of the tissues was determined according to the state of the cell walls. Four categories were established: D: highly degraded; DA: advanced degradation; PD: partially degraded; ND: not degraded. In autumn, the cut from 15 days to 12 hours, the disappearance of the chlorenchyma (mesophyll) was advanced and the phloem beganto be digested. After 48 hours, some paranchymalcells of the beam sheath remained undigested. At 30 days and 48 hours of incubation, mesophyll and phloem suffered complete degradation. At 45 days instead, he only showed a complete digestion for the chlorenchyme, the phloem presented advanced digestion. In winter, at 24 hours on lythex ylem tissues and abaxial sclerench y maremained. After 48 hours in rumen the only thing not digested was xylem, sclerenchyma and sheath of the beam. The mesophyll and the phloem, at 15 days and 24 hours, were digested 100%, for 30 and 45 days, advanced digestion was observed. In spring, the three ages showed chlorenchyme, phloem, and partially degraded sheath at 12 hours, the 24-hour the reveal e advanced degradation and complete digestion after 48 hours. The xylem, was degraded in it sentir et y to 48 hours of the cut of 15 days, instead for 30 and 45 days, the degradation was advanced . In summer the behavior was similar to spring. In general terms the anatomical characteristics observed, in the thre eages of cut and different seasons were variable fort his species. Con el objetivo de evaluar la degradación ruminal de Paspalum notatum (pasto horqueta) en rumen de bovinos en distintas épocas del año, en un campo del nordeste argentino se recolectaron muestras de dicha pastura a los 15, 30 y 45 días de rebrote, se cortaron y colocaron 5 g en bolsas de dacrón, para ser introducidas en el rumen a 120; 72; 48; 24; 12; 6; 3 y 0 horas, y retiradas al mismo tiempo. Una alícuota se fijó en solución de formol aceto-alcohólica (FAA), se deshidrató con acetona y montó en lámina de aluminio y metalizó para observación en microscopio de barrido (MEB). Se determinó la degradación de los tejidos según el estado de las paredes celulares. Se establecieron cuatro categorías: D: altamente degradado; DA: degradación avanzada; PD: parcialmente degradado; ND: no degradado. En otoño, el corte de 15 días a 12 h, la desaparición del clorénquima (mesófilo) fue avanzado, y el floema comenzó a ser digerido. Luego de 48 h algunas células paranquimáticas de la vaina del haz permanecieron sin digerir. A 30 días y 48 h de incubación, mesófilo y floema sufrieron degradación completa. A 45 días en cambio solo mostró una digestión completa para el clorénquima, el floema presentó digestión avanzada. En invierno, a 24 hs solo permanecieron los tejidos xilemáticos y casquete de esclerénquima abaxial. Al cabo de 48 h en rumen lo único no digerido fue xilema, esclerénquima y vaina del haz. El mesófilo y el floema, a los 15 días y 24 horas, se digirieron en un 100%, para 30 y 45 días, se observó una digestión avanzada. En primavera las tres edades, mostraron clorénquima, floema, y vaina del haz parcialmente degradados a las 12 h, el in situ de 24 h reveló degradación avanzada y digestión completa luego de 48 h. El xilema, se degradó totalmente a 48 h de incubación en el corte de 15 días, en cambio para 30 y 45 días, la degradación fue avanzada. En verano el comportamiento fue similar a primavera. En términos generales las características anatómicas observadas, en las tres edades de corte y distintas estaciones fueron variables para esta especie. Universidad Nacional del Nordeste 2022-12-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/6173 10.30972/vet.3326173 Revista Veterinaria; Vol. 33 Núm. 2 (2022); 136-145 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/6173/5844 Derechos de autor 2022 Revista Veterinaria |