Intake, digestibility, and nitrogen balance in hair sheep fed Pennisetum purpureum supplemented with tropical tree foliage

2019 ◽  
Vol 94 (3) ◽  
pp. 665-674 ◽  
Author(s):  
Hassem Rodriguez-Villanueva ◽  
José Puch-Rodríguez ◽  
Juan Muñoz-González ◽  
José Sanginés-García ◽  
Edgar Aguilar-Urquizo ◽  
...  
2005 ◽  
Vol 85 (10) ◽  
pp. 1725-1732 ◽  
Author(s):  
Pascal Leterme ◽  
Angela M Londoño ◽  
Fernando Estrada ◽  
Wolfgang B Souffrant ◽  
André Buldgen

2020 ◽  
Vol 2 (1) ◽  
pp. 23-36
Author(s):  
Paulus Klau Tahuk ◽  
Agustinus Agung Dethan ◽  
Stefanus Sio

The experiment was conducted for 3 months from March to June 2013 using nine (9) males Bali Cattle ages 2,5 - 3,5 or an average 3.0 years old based on teeth estimated with initial body weight range is 227-290 kg or an average of 257.40±23,60 kg in the Fattening Stalls, Bero Sembada Farmers Group, Laen Manen Sub District, Belu Regency, East Nusa Tenggara. This research be adapted to the practice of ranchers in fattened of cattle that includes management of feeding, housing, and health. Type of feed given during the study was Centrosema pubences, Clitoria ternatea, jerami Zea mays segar, Pennisetum purpuphoides, Leucaena leucocephala, natural grass, Pennisetum purpureum and Sesbania grandiflora. Variables measured consumption and digestibility energy and N, energy and N Balance, NNU and biological value. Data were analyzed with descriptive analysis procedures. The results showed that the kinetic energy (Mcal/kg/head/day) is the energy consumption of 30.657; energy feses, undigested and urine, respectively 10.136; 20.522 and 1.026, as well as energy Balance 19.496. Meanwhile, consumption of  N is 169 000 g/head/day ; excretion of N feses, urine and N digested, respectively 50, 20 and 119, as well as Balance N 104 g/head/day. While net nitrogen utilization and biological value of nitrogen is 58.580% and 83.194%. Can be concluded that male Bali cattle finishing phase in fattening using a feed single forage  the improve energy-nitrogen intake and digestibility, resulting a positive nitrogen Balance and energy, as well as net nitrogen utilization and biological value protein feed is high enough.  


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.


2000 ◽  
Vol 2000 ◽  
pp. 70-70
Author(s):  
I A Sanda ◽  
D L Romney ◽  
J Tanner ◽  
P Thorne ◽  
J D Leaver

Sanda et al. (1999) studied the effects on crossbred steer liveweight gain of alternating the same quantities of napier grass and barley straw at five day intervals over a 40 day period. These animals lost significantly more weight (p<0.05) than animals on one and ten day frequencies of alternation and those receiving the same quantities of the two feeds mixed together at each meal. These responses could not be explained by differences inin vivodigestibility or intake. The present study was designed to test the hypothesis that there are gradual changes in the rumen environment as animals adapt to the intake of a given forage and that, during this adaptive phase nitrogen is not used efficiently, which could explain the poor performance.


2016 ◽  
Vol 68 ◽  
pp. 101-108 ◽  
Author(s):  
A.A. Pech-Cervantes ◽  
J. Ventura-Cordero ◽  
C.M. Capetillo-Leal ◽  
J.F.J. Torres-Acosta ◽  
C.A. Sandoval-Castro

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).


Author(s):  
Saulius GUŽYS ◽  
Stefanija MISEVIČIENĖ

The use of nitrogen fertilizer is becoming a global problem; however continuous fertilization with nitrogen ensures large and constant harvests. An 8 year research (2006–2013) was conducted to evaluate the relationships between differently fertilized cultivated plant rotations. The research was conducted in Lipliunai (Lithuania) in the agroecosystem with nitrogen metabolism in fields with deeper carbonaceous soil, i.e. Endocalcari Endohypogleyic Cambisol (CMg-n-w-can). The research area covered three drained plots where crop rotation of differently fertilized cereals and perennial grasses was applied. Samples of soil, water and plants were investigated in the Chemical Analysis Laboratory of the Aleksandras Stulginskis University certified by the Environment Ministry of the Republic of Lithuania. The greatest productivity was found in a crop rotation with higher fertilization (N32-140). In crop rotation with lower fertilization (N24-90) productivity of cereals and perennial grasses (N0-80) was 11–35 % lower. The highest amount of mineral soil nitrogen was found in cereal crop rotation with higher fertilization. It was influenced by fertilization and crop productivity. The lowest Nmin and Ntotal concentrations in drainage water were found in grasses crop rotation. Crop rotations of differently fertilized cereals increased nitrogen concentration in drainage water. Nmin concentration in water depended on crop productivity, quantity of mineral soil nitrogen, fertilization, and nitrogen balance. The lowest nitrogen leaching was found in the crop rotation of grasses. Cereal crop rotation increased nitrogen leaching by 12–42 %. The usage of all crop rotations resulted in a negative nitrogen balance, which essentially depended on fertilization with nitrogen fertilizer.


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