Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2015
Volume 18
Issue 2
Topic:
Agronomy
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Medjekal S. , Ghadbane M. , Bousseboua H. 2015. IMPACT OF SEASON OF HARVEST ON POTENTIAL NUTRITIVE VALUE, METHANE PRODUCTION AND CONDENSED TANNINS CONTENT OF CALOBOTA SAHARAE IN M´SILA, NORTH-CENTRAL ALGERIA, EJPAU 18(2), #03.
Available Online: http://www.ejpau.media.pl/volume18/issue2/abs-03.html

IMPACT OF SEASON OF HARVEST ON POTENTIAL NUTRITIVE VALUE, METHANE PRODUCTION AND CONDENSED TANNINS CONTENT OF CALOBOTA SAHARAE IN M´SILA, NORTH-CENTRAL ALGERIA

Samir Medjekal1, Mouloud Ghadbane2, Hacène Bousseboua3
1 Department of Applied Microbiology, University Mentouri of Constantine, Algeria
2 Department of Microbiology and Biochemistry, Faculty of Science, University of Mohamed Bouadiaf M’sila, Algeria
3 Ecole Nationale Supérieure de Biotechnologie Ville Universitaire Ali Mendjeli, Algeria

 

ABSTRACT

The current trial was conducted to study the effect of season on the potential
nutritive value, methane production and condensed tannin of Calobota saharae shrub
harvested at three different seasons, in winter (mid-January), spring (mid-May)
and summer (end of July). Leaves, thin twigs, some flower and seeds (when existing)
were clipped with scissors from the aerial part of the plants then dried and
analysed for chemical composition. Gas and methane production were determined
at 24 h incubation time. Season of harvest had a significant effect (p < 0.05)
on the chemical composition, gas production and in vitro digestibility
of Tilley and Terry but no effect on metabolisable energy. Neutral detergent
fibre (NDF), Acid detergent fibre (ADF) and acid detergent lignin (ADL) of Calobota
saharae were high during summer (dry season) and low in spring and winter
(wet season). The NDF, ADF and ADL contents ranged from 463.05 to 616.82 and
352.27 to 488.21 and 121.19 to151.73 (g/kg DM) respectively. The CP content
was lower (p < 0.05) in summer (96.84 g/kg DM) versus
spring (138.85 g/kg DM) and winter (139.42 g/kg DM). The gas and methane production at 24 h incubation varied between 65.75 to 77.75 and 6.50 to 10.17 (ml/g DM) respectively
and decreased significantly (p <0.05) from spring to summer. In conclusion,
season had a significant effect on the nutritive value of Calobota saharae shrub. Calobota
saharae should be grazed or harvested during winter and spring since these
seasons provide this shrub with high ME and CP content for ruminant.

Key words: Calobota saharae, Condensed tannin, In vitro gas production, Nutritive value, Methane production, Rumen fermentation.

Samir Medjekal
Department of Applied Microbiology, University Mentouri of Constantine, Algeria
BP 360,
route de Ain El-Bey
25.017 Constantine
Algeria
email: sammedj2008@gmail.com

Mouloud Ghadbane
Department of Microbiology and Biochemistry, Faculty of Science, University of Mohamed Bouadiaf M’sila, Algeria
28 000 M’sila
Algeria

Hacène Bousseboua
Ecole Nationale Supérieure de Biotechnologie Ville Universitaire Ali Mendjeli, Algeria
B.P. E66
Algeria

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

Main  -  Issues  -  How to Submit  -  From the Publisher  -  Search  -  Subscription