Study of Forage Value and its Seasonal Alterations for Some Perennial Grazing Plants in AL-Jabal AL-Akhdar, Libya

• S. A Abugarsa

  Faculty of Natural Resources & Ecological Sciences, Omar Al-Mukhtar Univ., Al-Beida, Libya

  Author

• J. S. Algosni

  Faculty of Natural Resources & Ecological Sciences, Omar Al-Mukhtar Univ., Al-Beida, Libya

  Author

Samples of Hamada scoparia (bunge), belong to Chenopodiaceae Fam., and Artemisia herba –alba belong to Asteraceae Fam., were collected from south of Marawa, while samples of Pituranthus tortuosus (Desf) belong to Apiaceae Fam., were collected from east of Sidi Botheraa.The first samples were collected on 27/12/2001, whereas the second samples were collected on 27/4/2002. The purpose of this experimentwas to determine the effect of season on the nutritive value of these three different plants.  The results showed thatthe highest percentage of crude fibers(CF%) was reported in Pituranthus tortuosus during winterseason, whereas the lowest CF% was reported in Hamada scoparia during spring season. The crude protein (CP%) increased in all the plants in spring season whereArtemisia herba –alba recorded the highest value.Phosphorous percentage was higher during spring in all samples especially with Pituranthus tortuosus.percentage of sodiumwas significantly low in Hamada scoparia and increased in Artemisia herba –alba in spring season while it did not change in Pituranthus tortuosus.  The results showed that calcium Percentage increased significantly only in Artemisia herba –alba in spring season.The three different plants showed insignificant differences between the two growth stages in percentage of potassium. Hamada scoparia showed significant increase in percentage of magnesium in spring season and it decreased significantly in Artemisia herba–alba in spring season whereas its percentagedid not significantly differ in Pituranthus tortuosusbetween seasons.

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