Response of sheep fed with tropical tree legume foliages and Taiwan grass (Pennisetum purpureum).

Author(s):  
D. Grande ◽  
F. Reyes ◽  
H. Losada ◽  
J. Nahed ◽  
N. Romero ◽  
...  
Author(s):  
Sara Stephanie Valencia Salazar ◽  
Guillermo Jiménez-Ferrer ◽  
Isabel Cristina Molina-Botero ◽  
Juan Carlos Ku-Vera ◽  
Ngonidzashe Chirinda ◽  
...  

Enteric methane (CH4) emitted by ruminant species is known as one of the main greenhouse gases produced by the agricultural sector. The objective of this study was to evaluate the chemical composition, in vitro gas production, dry matter degradation (DMD), digestibility, CO2 production and CH4 mitigation potential of five tropical tree species with novel forage potential including: Spondias mombin, Acacia pennatula, Parmentiera aculeata, Brosimum alicastrum and Bursera simaruba mixed at two levels of inclusion (15 and 30%) with a tropical grass (Pennisetum purpureum). Crude protein content was similar across treatments (135 g kg-1 DM), while P. purpureum was characterized by a high content of acid detergent fiber (335.9 g kg-1 DM) and B. simaruba by a high concentration of condensed tannins (20 g kg-1 DM). Likewise, A. pennatula and P. aculeata were characterized by a high content of cyanogenic glycosides and alkaloids respectively. Treatments SM30-PP70 (30% S. mombin + 70% P. purpureum) and BA30-PP70 (30% B. alicastrum + 70% P. purpureum) resulted in superior digestibility than P. purpureum, while in the AP30-PP70 (30% A. pennatula + 70% P. purpureum) was lower than the control treatment (P≤0.05). At 24 and 48 h, treatments that contained P. aculeata and B. alicastrum produced higher CH4 ml g-1 DOM than P. purpureum (P≤0.05). The inclusion of B. simaruba at 30% reduced CH4 at 25% compared to P. purpureum. Tropical tree species can improve the nutritional quality of ruminant rations and reduce CH4 emissions to consequently contribute to the development of sustainable ruminant production systems that generate diverse ecosystem services.


2019 ◽  
Vol 94 (3) ◽  
pp. 665-674 ◽  
Author(s):  
Hassem Rodriguez-Villanueva ◽  
José Puch-Rodríguez ◽  
Juan Muñoz-González ◽  
José Sanginés-García ◽  
Edgar Aguilar-Urquizo ◽  
...  

1991 ◽  
Vol 42 (7) ◽  
pp. 1231 ◽  
Author(s):  
PM Horne ◽  
GJ Blair

A field experiment was conducted in a wet tropical environment (Ciawi, West Java, Indonesia) to assess the forage yields of mixtures of leucaena and grasses over a 1 year period in plots which had been established 2 years earlier. The tree legume Leucaena leucocephala cv. Cunningham (plant density 1 m x 0.5 m), cut at either 30 cm or 100 cm, was interplanted with either a short grass (Setaria sphacelata var. splendida) or a tall grass (Pennisetum purpureum). Mineral nutrients were non-limiting. Highest leaf production was in the setaria monoculture (20.8 t ha-l yr-l) and the low-cut leucaena/setaria mixture (18.5 t ha-l yr-1), with the grass dominating production (> 88%) in the latter because of the ability of setaria to gain preferential access to light penetrating between the rows of leucaena early in each growth period. Leucaena shoot production in the low-cut leucaena treatments was reduced from a mean of 8.8 t ha-1 yr-1 in the monocultures to 1.5 t ha-l yr-1 in the mixtures. For the high-cut leucaena treatments, grass leaf yields were lower from the mixtures than from the monocultures but leucaena shoot yields were only reduced from monoculture yields in the mixture with pennisetum. The mixture of setaria and high-cut leucaena produced a considerable yield of setaria leaf (6.2 t ha-1 yr-l) with no reduction in leucaena leaf yields and intercepted a significantly greater percentage of total incident light (64%) than the other three mixtures (42-42%).


Author(s):  
CC. Castillo-Águilar

Se comparó el uso de diferentes dietas con base en heno de alfalfa cultivada (Medicago sativa L.) en Campeche y su relación con un concentrado comercial y pasto Taiwán (Pennisetum purpureum), T1=concentrado comercial, T2=T1+heno de alfalfa, T3=T1+pasto Taiwán, T4=heno de alfalfa. Se evaluó el comportamiento productivo y metabólico de corderos en sistema intensivo utilizando 20 corderos machos con encaste de Pelibuey, Dorper y Black Belly de 12.5±1 kg de peso vivo (PV). Se midió el consumo de materia seca total (CMS), la ganancia diaria de peso (GDP), la conversión alimenticia (CA), y la digestibilidad in situ de la materia seca (DISMS). También fueron evaluados el pH, nitrógeno amoniacal (NH3) y la concentración de ácidos grasos volátiles (AGV) en líquido ruminal. La mejor GDP en gramos por día, de 234 g (p?0.05) se obtuvo en el T2; en contraste, el T3 mostró la menor GDP. La dieta que incluyó la mezcla de heno de alfalfa y concentrado mejoró significativamente las condiciones de las variables pH, NH3 y AGV (p?0.05).


2004 ◽  
Vol 5 (1) ◽  
pp. 99-100
Author(s):  
Jerry M. Baskin
Keyword(s):  

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