Chemical properties, antioxidant activities and in vitro fermentation profiles of some shrubs of North Western Tunisia

Author(s):  
H. Selmi ◽  
M. Hasnaoui ◽  
A. Bahri ◽  
C. Abbes ◽  
S. Dallali ◽  
...  

The main aims of this study were to analyze the chemical composition and total phenolic, and to evaluate the in vitro fermentation and antioxidant activities from some shrubs (Erica arborea, Myrtus communis, Arbutus unedo and Phillyrea latifolia). The determination of the chemical composition, total phenolic, flavonoid contents and the antioxidant activity were investigated by using in vitro methods. The in vitro gas production and ruminal parameters were determined in the presence of goat rumen juice. Total nitrogen content was significantly high with Myrtus communis (p less than 0.01). Total phenolic and flavonoid content vary by species and season (p less than 0.01). It can be concluded that all parameters were significantly affected by the seasonal period and the shrubs nature. Expect the OM that was similar regardless the seasonal period.

2003 ◽  
Vol 2003 ◽  
pp. 157-157
Author(s):  
A. Bortolozzo ◽  
D. K. Lovett ◽  
S. Lovell ◽  
L. Stack ◽  
F. P. O’Mara

The in vivo determination of methane (CH4) production requires specialist equipment which is costly to maintain. Whilst the in vitro gas production technique has been demonstrated to show potential to rank diets for their methanongenic potential at maintenance planes of nutrition (Moss and Givens, 1997) no study has investigated this relationship when feedstuffs are fed ad libitum. The objective of this study was to assess the ability of the technique to predict in vivo CH4 production and animal performance from six diets differing in their chemical composition.


Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2212
Author(s):  
Mónica Gandarillas ◽  
Juan Pablo Keim ◽  
Elisa María Gapp

Background: Horses are hindgut fermenters, and it is therefore important to determine the postgastric nutritive value of their feedstuffs and diets. Moreover, it has been demonstrated in other animal species that the fermentation of diets results in different values than those expected from pure ingredients. Therefore, the general objective of this work is to evaluate the gas production (GP) and volatile fatty acid (VFA) concentration, as well as the associative effects, of mixtures of different forages and concentrated foods, which are representative of the traditional diets of high-performance horses. Methods: An in vitro gas production experiment was conducted to assess the fermentation of two forages and three concentrates that are typical in horse diets. The combination of 70% of forage and 30% concentrates was also assessed to determine potential associative effects. Results: Concentrates and grains produced higher GP and VFA than forages when evaluated alone. When experimental diets were incubated, GP parameters and VFA concentrations of forage–concentrate mixtures had unexpected differences from the values expected from the fermentation of pure ingredients, suggesting the occurrence of associative effects. Conclusions: Our results indicate that there is a need to evaluate the fermentation of diets, rather than predicting from the values of pure ingredients.


2006 ◽  
Vol 5 (5) ◽  
pp. 497-500 ◽  
Author(s):  
O.J. Babayemi . ◽  
R.A. Hamzat . ◽  
M.A. Bamikole . ◽  
N.F. Anurudu . ◽  
O.O.Olomola .

2019 ◽  
Vol 44 (1) ◽  
pp. 77 ◽  
Author(s):  
A. Jayanegara ◽  
V. Ardani ◽  
H. A. Sukria

The objective of this experiment was to evaluate chemical composition, in vitro fermentation and digestibility of dried and ensiled indigofera, papaya and moringa leaves. The leaves were subjected to artificial drying in an oven at 60oC for 24 h and ensiling treatment for 30 d under room temperature. Dried and ensiled samples were determined for chemical composition, silage fermentation characteristics and in vitro rumen fermentation and digestibility. The experimental design was a factorial design 3 × 2 in which the first factor was different leaves (indigofera, papaya and moringa) and the second factor was conservation treatments (drying and ensiling). Determination of chemical composition was performed in duplicate whereas in vitro evaluation was conducted in three replicates. Results showed that ensiling treatment decreased CP contents of indigofera and moringa but not papaya leaves. Ensiling also decreased NDF and NDICP contents of all experimental leaves in comparison to drying treatment. The pH of all silages was high and they were characterized with high ammonia concentrations. Ensiled indigofera tended to have lower IVDMD and IVOMD as compared to dried indigofera (P<0.1). It can be concluded that ensiling of high protein forages leads to considerable extent of proteolysis.


Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1784
Author(s):  
Beatriz Ligoski ◽  
Lucas Ferreira Gonçalves ◽  
Flavio Lopes Claudio ◽  
Estenio Moreira Alves ◽  
Ana Maria Krüger ◽  
...  

Legume–grass intercropping systems are a sustainable option to improve nutritional quality of animal feed and decrease livestock greenhouse gas emissions. Thus, the present study evaluated yield, chemical composition and in vitro gas production of silages produced with intercropped palisade grass (Urochloa brizantha.(A.Rich.) R.D.Webster), pigeon pea (Cajanus cajan cv. Super N) and corn (Zea mays. L.). Forage was harvested and placed inside micro-silos, which were opened after 100 days and samples were collected for chemical composition and in vitro gas production analyses. Intercropped silage had higher crude protein, acid detergent fiber, and lignin content than corn silage. Moreover, intercropped silage decreased total gas and methane production. Therefore, intercropped silage showed potential to increase conserved feed nutritional quality and reduce methane emissions in livestock production systems.


2018 ◽  
Vol 35 (4) ◽  
pp. 397
Author(s):  
A.K.M. Ahsan Kabir ◽  
M. Moniruzzaman ◽  
Z. Gulshan ◽  
A.B.M. Mustanur Rahman ◽  
A.K.M Golam Sarwar

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