Degradation in the rumen of green-fed or ensiled Lucerne and Red Clover (original) (raw)
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Annales de Zootechnie, 1993
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The dromedary is particularly well adapted to life in dry regions where under extreme temperature conditions their forages become both scarcely available and minimally digestible. The object of our study is to show the effect of incubation of seeds of some Saharan pastoral plants in the rumen of dromedaries (simulation of artificial biological digestion) on their ability to germinate. For this, we have selected 12 of the most popular plant species to the dromedary, belonging to 8 botanical families. These seeds were incubated in ruminal fluid for 48 hours at 38 ºC in the dark. followed by germination of the seeds after recovery, in comparison with the control. The results obtained showed the recovery of intact seeds of 08 species, undigested or altered, despite the reputation of the efficiency of ruminal microflora camel. In addition, we recorded the positive effect of incubation on the germination of seeds of these 07 species in which germination has reached the maximum compared to the control. In general , it appears that the passage of the seeds in the digestive tract of the dromedary may improve germination of most of the species ingested , even if it can occasionally other species digest .
Influence of rootstock on agronomical behaviour of cv. Gamaret in Ticino
Two trials on the association of the cv. Gamaret with several rootstocks were conducted in the vineyards of Ticino with the aim of improving its vegetative behavior and productivity. Under less fertile soils conditions, more vigorous rootstocks (5 BB or SO4) significantly improved the homogeneity of growth and vigour of the cultivar and could be recommended instead of the traditional 3309 C. But on fertile soils where 3309 C gives a sufficient vigor, those rootstocks are not recommended because they enhance the risk of higher flower abortion and poor fruit set during the years with unfavorable weather during the flowering period.