Effects of graded levels of Curcuma longa Powder on in vivo digestibility in Guinea pigs (Cavia porcellus)

Abstract

L’effet de l’incorporation de la poudre du Curcuma longa comme phytobiotique sur l’ingestion et la digestibilité in vivo des nutriments a été mesuré sur un total de 40 cobayes de race anglaise ayant un poids moyen de 452±75 g. La poudre de racines de Curcuma longa a été incorporée dans l’aliment composé à des niveaux croissants (0 ; 0,25 ; 0,5 et 1%). Chaque ration a été granulée. Pendant l’essai de digestibilité qui a duré 17 jours (10 jours d’adaptation et 07 jours de collecte des données), chaque ration était répétée sur 10 cobayes (5 mâles et 5 femelles). L’inclusion de la poudre de Curcuma longa a amélioré de manière significative (p<0,05) l’ingestion alimentaire des cochons d’inde quel que soit le niveau d’inclusion considéré dans les rations. La digestibilité de la matière sèche de la ration contenant 0,25% de Curcuma longa a été comparable à celle de la ration R0% et R1%. En outre, la digestibilité de la cellulose brute de la ration R0,25% a été comparable à celle des rations R0,5% et R1%, mais significativement plus élevée que celle des rations R0%. L’inclusion de la poudre de Curcuma longa dans les rations a permis d’améliorer l’ingestion et la digestibilité de la ration chez des cochons d’inde. D’autres études doivent être réalisées afin de déterminer les causes de ces effets.

Effects of Different Levels of Garlic Powder Incorporated in the Feed Enriched with <i>Stylosanthes guianensis</i> on Reproduction and Pre-Weaning Growth Performances of Cavies (<i>Cavia porcellus</i>)

“…Indeed, when phytobiotics are incorporated into animal diets, they improve feed digestibility and nutrient absorption, as well as the elimination of pathogenic microorganisms from the animals' digestive tract, and consequently stimulate reproductive functions [29] [30]. Our results are contrary to those of Djoumessi et al [31], who found that the inclusion of different levels of Curcuma longa powder in the ration had no significant effect on these reproductive parameters. Similarly, the work of Fogang [21] reported that incorporating 1% garlic powder into a ration without legumes had no significant effect on reproduction parameters, which remained unchanged compared to the control ration (without additives).…”

“…However, these results contrast those of Djoumessi et al [31], who showed that average weekly weights of lactating females fed rations containing Curcuma longa powder increased progressively from farrowing to weaning.…”

“…Total gains (TG) and average daily gains (ADG) of female cavies or independently of sex were significantly improve by the level of garlic powder incorporation in the ration, confirming the synergistic effect of the legume and garlic on the improvement of these growth parameters. These results corroborate those obtained by Djoumessi et al [31], whose the inclusion of different levels of C. longa powder in the ration has significantly improved TG and ADG in cavies. However, the highest values for TG (59.73 g) and ADG (2.84 g) were obtained with the ration containing 0.50% garlic powder, while those for total gain (98.8 g) and ADG (4.70 g) were recorded with the ration containing 0.50% C. longa powder were much higher.…”

“…Indeed, thanks to their antioxidant properties, phytobiotics reduce the metabolic processes leading to the formation of free radicals, thus improving these animals' resistance to oxidative stress, which has an impact on both their health and the quality of their meat [32] [33]. The results of this work differ from those of Djoumessi et al [31], whose birth and weaning mortality rates remained comparable to those of the control ration.…”

“…20.8% and 5% respectively, which justifies the fact that it was important to investigate the level of garlic powder needed to reduce cavy rearing mortalities. Furthermore, in the trials performed by Djoumessi et al [31], the lowest birth (0.0%) and pre-weaning (11.1%) mortality rates were obtained in newborn cavies whose mothers were fed with the ration containing 0.25% C. longa powder (R0.25), confirming the fact that the use of phytobiotics in cavy feed reduces mortality in cavy farms.…”