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Fatty acid profile in edible eggs of snails from the Cornu genus Full text
2020
Maćkowiak-Dryka, Monika | Szkucik, Krzysztof | Ziomek, Monika | Klimek, Kamila
Fatty acid profile in edible eggs of snails from the Cornu genus Full text
2020
Maćkowiak-Dryka, Monika | Szkucik, Krzysztof | Ziomek, Monika | Klimek, Kamila
The aim of this study was to determine the content of fatty acids in eggs harvested from two edible subspecies of Polish-bred common garden snail from the Cornu genus, as well as this content in the retail-ready product obtained from these eggs. Material for the study consisted of eggs from two subspecies of edible snails: the small (Cornu aspersum aspersum), and large (Cornu aspersum maxima) common garden snails. The eggs studied were in two forms, the first of which had undergone initial processing to the half-product stage and the second of which was the final product available on the Polish market under the name “Snail Eggs”. The gas chromatography method was used to determine the content of fatty acids. More than 75% of the studied fats were saturated fatty acids, dominated by palmitic and stearic acids. The average content of polyunsaturated fatty acids was 0.37%, and it was a combination of two acids: linoleic (C18:2n6c), and its trans isomer (C18:2n6t). No significant differences were found comparing individual fatty acids content between the two species’ eggs as half-products, or between the half-products and the final product. The fat in raw and processed eggs of common garden snails holds low nutritional value, and the processing did not affect the content of fatty acids.
Show more [+] Less [-]Fatty acid profile in edible eggs of snails from the Cornu genus Full text
2020
Maćkowiak-Dryka Monika | Szkucik Krzysztof | Ziomek Monika | Klimek Kamila
The aim of this study was to determine the content of fatty acids in eggs harvested from two edible subspecies of Polish-bred common garden snail from the Cornu genus, as well as this content in the retail-ready product obtained from these eggs.
Show more [+] Less [-]Influence of unsaturated to saturated ratio of fatty acids reaching the duodenum on postruminal digestion of stearic acid in Holstein steers fed a high-fat finishing diet Full text
2021
Alejandro Plascencia | Alberto Barreras | Yissel Valdes-García | Richard A. Zinn
Objective: To evaluate the influence of the unsaturated to saturated ratio of fatty acids (FAs) reaching the duodenum on postruminal digestion of FAs, mainly focused on stearic acid (C18:0). Materials and Methods: Six Holstein steers [208 ± 3 kg initial live weight (LW)] with cannulas in the abomasum and proximal duodenum were used in a replicated 3 × 3 Latin square design. Steers were fed a fixed amount of a basal steam-flaked corn-based diet containing 8% supple mental fat and were daily infused via abomasum with 0, 67, and 165 gm oleic acid (C18:1). The experiment lasted for 42 days. Results: The daily total FA (TFA) intake (dietary FA intake plus abomasal infusion of oleic acid) represented a 1.78, 2.10, and 2.56 gm TFA/kg LW ratio. The unsaturated to saturated ratio of FAs entering the duodenum increased (p < 0.01) aslevel C18:1 infusion into the abomasum increased. Infusion of C18:1 tended (quadratic component, p = 0.07) to improve postruminal TFA digestion, being maximal for the 67 gm/day infusions. This increase in TFA digestion was due to increased (quadratic component, p = 0.03) postruminal C18:0 digestion (postruminal digestion of the other FAs was not different, p ≥ 0.13). Conclusion: Increasing the unsaturated to saturated ratio of FAs entering the small intestine will enhance intestinal C18:0 digestion. This positive effect is expected to be more likely bene ficial when FA intake is high (and thus, the duodenal flow of FA is high), but this benefit looks diminished when the quantity of TFA reaching the intestine exceeds the proportion of 2.13 gm FA/kg LW. [J Adv Vet Anim Res 2021; 8(3.000): 465-470]
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