Evaluación In vitro de la producción de metano en variedades de pastos neozelandeses del altiplano de Nariño

Apráez-Guerrero, J. E.; Delgado-Jurado, David; Solarte-Portilla, Carlos

doi:10.17151/vetzo.2016.10.2.8

Cited by 3 publications

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“…Los contenidos de lignina presentes en el forraje de los tratamientos evaluados (Cuadro 1) pudieron tener un efecto sobre la emisión de CH 4 entérico, debido a que alimentos ricos en fibras lignificadas producen menores volúmenes de CH 4 , debido al acceso limitado de los microorganismos del rumen al sustrato (Apráez-Guerrero et al, 2016). Además, López-Herrera et al (2021) indicaron que al disminuir la digestibilidad de FDN (aumento de lignina) por mayor edad de rebrote, se reduce la cantidad de CH 4 , debido a una menor cantidad de materia orgánica (principalmente fibra) fermentándose en el rumen.…”

Section: Discussionunclassified

Tipo de fertilización y edad de rebrote sobre parámetros ruminales de Tithonia diversifolia

et al. 2023

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Introducción. Los forrajes en el trópico presentan una baja digestibilidad, por lo que se buscan alternativas alimenticias como la Tithonia diversifolia (Hemsl.) para aumentar la calidad de la dieta ofrecida. Objetivo. Evaluar el efecto del tipo de fertilizante y la edad de rebrote del forraje de Tithonia diversifolia sobre los parámetros ruminales. Materiales y métodos. El trabajo se realizó en el año 2020 en la Finca Experimental Santa Lucía de la Universidad Nacional Costa Rica. Se utilizó un diseño de parcelas divididas completamente al azar: tipo de fertilizante (parcela) y edad de rebrote (subparcela) con tres repeticiones por tratamiento. Los tipos de fertilizante fueron: lombricompost (L), químico (Q) y un control (C) sin uso de fertilizante. Las edades de rebrote evaluadas fueron 30, 50 y 70 días para un total de nueve tratamientos. Las variables evaluadas fueron: cinética de degradabilidad in situ de la materia seca (DISMS), pH, nitrógeno amoniacal (NH3), producción de gas y metano in vitro (CH4). Se realizó un ANOVA para parcelas divididas. Resultados. La mayor DISMS se encontró en C30 (92,84 %) y menor en Q70 (64,21 %). El tipo de fertilización influyó sobre los contenidos de NH3 presentó el valor más alto en los tratamientos con fertilización química (275,88 mg NH3/L fluido ruminal). C70 produjo la mayor cantidad de gas (79,59 mL/g), en contraste con Q30 que fue el de menor promedio (28,38 mL/g). La producción de CH4 no mostró diferencias significativas, con valores entre 3,42-8,67 mL CH4/g MS. Conclusión. La fertilización y edad de rebrote modificaron los parámetros ruminales in situ e in vitro. Los resultados obtenidos permiten considerar este recurso forrajero como un complemento de las gramíneas de pastoreo en el trópico, donde se generen efectos positivos sobre la digestibilidad de la MS, la producción de gas y de CH4.

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Section: Discussionunclassified

Tipo de fertilización y edad de rebrote sobre parámetros ruminales de Tithonia diversifolia

et al. 2023

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“…However, the degradation leads to increased production of methane gas. Also, grasses with less content of structural carbohydrates, such as ryegrass amson, generate less methane emission (Apráez-Guerrero et al, 2016), indicating that proper management of grasslands can reduce methane emission (Apráez et al, 2014).…”

Section: Regionsmentioning

confidence: 99%

Applied research on dairy cattle feeding systems in Colombian high tropics

Castillo-Sierra

Benavides

Vargas

et al. 2019

rcia

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Sustainable intensification of dairy production is a strategy to consolidate a competitive sector. However, technologies adoption is limited due to the difficulty to accessing to research results. The objective of this document was to review a compilation of research works carried out mainly by the Colombian Agricultural Research Corporation (Agrosavia) in specialized dairy feeding systems of Colombian high tropics. In soils issue, research has been carried out on soil recovery and grassland renewal. Recently, the growth of grasses has been evaluated under different environmental conditions to generate efficient forage management schemes. In 2018 was registered Altoandina oat to forage use, but, in Colombian high tropic, there is a limited offer to forages due to absence of breeding program and evaluation of germplasm. Integrated management of Collaria scenica has been developed. Characterization and use of tree and shrub species have been carried out to silvopastoral systems (SSPs). In feeding systems, Agrosavia has been working on determining chemical and nutritional compositional of feed resources and design of supplementation schemes to improve animal response. Methane production increases when mature forage species are used, contrary a balanced diet or grazing in SSPs reduces methane emissions. Finally, research developments must incorporate and recognize the production costs of the system to ensure the adoption of technologies.

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“…Currently, according to the Society of Farmers and Ranchers of Nariño (SAGAN, 2022), in the department there are 133,526 cows, of which 80% are Holstein breed, and since 2012 to date, reproductive problems have been evidenced related to the wide calving intervals, which vary between 444.5 ± 96.2 days, and open days of 166.3 ± 94.5 (Solarte & Zambrano, 2012). The diet is based on monoculture meadows of kikuyu (Cenchrus clandestinus Hoschst ex Chiov), ryegrass (Lolium spp), white clover (Trifolium repens), false pomace (Holcus lanatus) and New Zealand-type improved pastures such as: Lolium hibridum (sterlingohau) and Lolium perenne (nui-samson) or in mixtures of these, plus food supplementation consisting of commercial concentrates or silages (Apráez et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Metabolic indicators and their relationship with reproductive efficiency in dairy cows in the high tropics

Zambrano-Burbano

Gaona

2023

rcia

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The specialized herds of the high tropics of Nariño are characterized by semi-intensive breeding models, that is, feeding based on grazing and supplementation. The objective was to analyze the milk production of grazing Holstein cows under conditions of the high tropics, taking into account the energetic and protein metabolites, and their relationship with the dry matter intake (CMS/Kg/d), the body condition (BC), and the reproductive variables. Three periods of lactation were evaluated, thus, between 4-10 days (P1), 45-55 days (P2), and between 185-200 days (P3). The investigation was carried out in four dairy production farms. The forage supply consisted of a mixture of Lolium hybridum, Cenchrus clandestinus Hoschst ex Chiov, Holcus lanatus and Trifolium repens, plus commercial concentrate. A total of 24 Holstein animals (six per productive system) from three births onwards were used, from which blood samples were obtained to determine: non-esterified fatty acids (NEFA), beta-hydroxybutyrate (BHB), triglycerides, cholesterol, glucose, total protein (PT), and blood urea nitrogen (BUN). The results showed that milk production during P1 is influenced by CC and body weight (Kg) by +0.04 liters of milk per unit of change in this variable. In P2, the positive incidence variables were PT, BUN, glucose, NEFA, BHB, triglycerides, and cholesterol, and in P3, the increase in CMS made it possible to show that as lactation progresses in more than 180 days, the animals substantially improve their body condition; likewise the NEFA and BHB indicators are related to a better reproductive response.

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Evaluación In vitro de la producción de metano en variedades de pastos neozelandeses del altiplano de Nariño

Cited by 3 publications

References 0 publications

Tipo de fertilización y edad de rebrote sobre parámetros ruminales de Tithonia diversifolia

Tipo de fertilización y edad de rebrote sobre parámetros ruminales de Tithonia diversifolia

Applied research on dairy cattle feeding systems in Colombian high tropics

Metabolic indicators and their relationship with reproductive efficiency in dairy cows in the high tropics

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