Effect of Hevea brasiliensis seed meal or Euphorbia heterophylla seed supplemented diets on performance, physicochemical and sensory properties of eggs, and egg yolk fatty acid profile in guinea fowl (Numida meleagris)

Abstract

A total of 144 French selected breed (Galor) female guinea fowl (GF) of 42 wk of age were enrolled for a feeding trial of 15, 30, and 45 D duration. The birds were randomly assigned to 18 cages, each containing 8 birds. A total of 3 isonitrogenous and isocaloric dietary treatments were trialed, each diet comprising 6 replications (cages), which meant a total of 48 birds per diet. The GF were fed either a control diet C (commercial diet “FACI ponte 20”, SIPRA, Ivory Coast, usually used for all poultry species) or the diet C supplemented with 5% Euphorbia heterophylla seeds (diet E) and the diet C supplemented with 5% Hevea seed meal ( Hevea brasiliensis ) (diet H). Animal performance were assessed for 3 periods (days 0 to 15, 0 to 30, and 0 to 45), and egg quality and composition were assessed at 15, 30, and 45 D of the trial. The results indicated no mortality during the trial. The laying rate was the highest (43.9%) with diet E and the lowest with diet C (32.5%), the laying rate with diet H being intermediate (38.5%). Diet E containing Euphorbia seeds led to a reduced cholesterol content of the eggs. Additionally, inclusion of Euphorbia seeds and, to a lesser extent, of the Hevea seed meal in the diet led to n-3 polyunsaturated fatty acid enriched GF eggs, with thereby, improved nutritional value. A sensory test did not find any difference between the 3 diets on trial.

Thicker Shell Eggs with Enriched N-3 Polyunsaturated Fatty Acids and Lower Yolk Cholesterol Contents, as Affected by Dietary Nettle (Urtica cannabina) Supplementation in Laying Hens

“…Hepatic serum levels of ALT and AST are frequently used to evaluate liver injuries. In this study, there were no significant changes in serum ALT and AST levels in the U. cannabina group compared with the control group, which confirms that there was no diet-induced liver injury [37]. A decrease in total cholesterol and triglycerides and an increase in HDL-cholesterol was observed in the serum of hens fed with U. cannabina due to the rich sterols content of U. cannabina.…”

“…ALA is the pre-dominant fatty acid, accounting for 40.7% of the fatty acids in the mature leaves [5]. The composition of fatty acids stored in monogastric animals largely indicates that the lipid and fatty acid composition of poultry eggs can be altered by diet [37]. Hence, eggs can be an important source of n-3 PUFA when laying hens are fed a diet containing a high level of n-3 PUFA [11,38].…”

Effect of Ramie on the Production Performance of Laying Hens, and the Quality, Nutrient Composition, Antioxidation of the Eggs

“…Moreover, it was showed that the fat metabolism of pigs was modulated by 500 mg/kg nettle extract in diet, that the MUFA was decreased and PUFA was increased in muscle fat ( Szewczyk et al, 2006 ). The composition of fatty acids stored in monogastric animals indicated the possibility that the lipid and fatty acid composition of poultry eggs could be altered by the diet ( Kouassi et al, 2020 ). In the present study, 6% ramie significantly increased the content of icosaic acid and ALA in egg yolk, and significantly increased the content of n-3PUFA.…”

Productive Performance, Egg Quality and Composition in Local Laying Hens Fed Diets Including Either Desmodium tortuosum Leaf Flour or Hevea brasiliensis Seed Meal.

“…However, rapidly expanding demands for poultry products are not really stimulating the local poultry production as much as might be expected because of high levels of poultry product imports [2]. The egg-consumption rate is 64 eggs per Ivorian per year [3] and projections indicate a consumption of between 100 and 150 eggs per Ivorian per year by 2030 [4]. Indigenous poultry production in Africa has been neglected for a long time, because of its low productivity, even if the taste of the meat and eggs from these animals are highly appreciated by the population.…”