Publications by authors named "Mihaela Saracila"

4 Publications

  • Page 1 of 1

Effects of Linseed Meal and Carotenoids from Different Sources on Egg Characteristics, Yolk Fatty Acid and Carotenoid Profile and Lipid Peroxidation.

Foods 2021 May 31;10(6). Epub 2021 May 31.

Laboratory of Chemistry and Nutrition Physiology, National Research Development Institute for Animal Biology and Nutrition, Calea Bucuresti nr. 1, Balotesti, 077015 Ilfov, Romania.

The present study aimed to evaluate the effect of supplementing the diet of laying hens with linseed meal and carotenoids from different sources on egg characteristics, yolk fatty acid and carotenoid profile, and lipid peroxidation. A 4-week experiment was conducted on 168 Lohmann Brown layers (43 weeks of age), assigned to four dietary treatments (42 hens/group; 21 replicate/groups with 2 birds/pen) consisting of a control diet (C) and three diets simultaneously supplemented with 6% linseed meal and 2% dried kapia pepper (E1), 2% dried sea buckthorn pomace (E2) and 2% dried carrot (E3). Every 2 weeks, 18 eggs/group/period were collected randomly from each group and used to determine the egg quality and nutritional parameters. The results showed that dietary linseed meal and carotenoids sources improved egg color, carotenoids' accumulation in egg yolk and fatty acid profile, especially the n-3 PUFA content. Dietary carotenoids supplementation reduced, n-6/n-3 ratio, cholesterol content of the egg yolk and improved yolk pH, egg thickness and yolk oxidative stability. In conclusion, the use of these sources of carotenoids in the linseed meal enriched diets could be an effective way to improve the nutritional properties of the eggs without affecting their quality and consumer's safety.
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http://dx.doi.org/10.3390/foods10061246DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8226844PMC
May 2021

Heat Stress in Broiler Chickens and the Effect of Dietary Polyphenols, with Special Reference to Willow ( spp Bark Supplements-A Review.

Antioxidants (Basel) 2021 Apr 27;10(5). Epub 2021 Apr 27.

National Research-Development Institute for Animal Biology and Nutrition (IBNA), Calea Bucuresti, 1, Balotesti, 077015 Ilfov, Romania.

Over the last decade, there has been a growing interest in the use of a wide range of phytoadditives to counteract the harmful effects of heat stress in poultry. Willow ( spp.) is a tree with a long history. Among various forms, willow bark is an important natural source of salicin, β-O-glucoside of saligenin, but also of polyphenols (flavonoids and condensed tannins) with antioxidant, antimicrobial, and anti-inflammatory activity. In light of this, the current review presents some literature data aiming to: (1) describe the relationship between heat stress and oxidative stress in broilers, (2) present or summarize literature data on the chemical composition of species, (3) summarize the mechanisms of action of willow bark in heat-stressed broilers, and (4) present different biological effects of the extract of species in different experimental models.
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http://dx.doi.org/10.3390/antiox10050686DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146860PMC
April 2021

Influence of Dietary Supplementation of Bark on Performance, Oxidative Stress Parameters in Liver and Gut Microflora of Broilers.

Animals (Basel) 2020 May 31;10(6). Epub 2020 May 31.

National Research-Development Institute for Animal Biology and Nutrition (IBNA), 1, Calea Bucuresti, Balotesti, 077015 Ilfov, Romania.

The paper aimed to analyse the effect of dietary bark powder (SAB) on broiler performance in terms of oxidative stress parameters in liver and gut microflora. One hundred and eighty Cobb 500 broiler chicks (14 days) were allotted to three homogeneous treatments (SAB 0%; SAB 0.025%; SAB 0.05%). The broilers were housed in an environmentally controlled space (10 replicates, six broilers/replicate). Compared to dietary control treatment (SAB 0%), the other treatments included 0.025% SAB (SAB 0.025%) and 0.05% SAB (SAB 0.05%). The results showed that SAB powder used in broiler diet had a high total phenolic content. Regarding the performance results, significant differences between experimental and control treatments were recorded only for average daily feed intake (35-42 days). The broilers fed with SAB powder had a significantly lower hepatic level of malondialdehide and glutathione, a higher total antioxidant capacity than those fed control treatment, and demonstrated a positive effect on the development of non-pathogenic bacteria () but a decrease in the population of pathogenic ones (, ). Our findings suggested that dietary 0.05% SAB powder could be an effective solution to impede the oxidative stress in broiler liver and to improve gut microflora.
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http://dx.doi.org/10.3390/ani10060958DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7341264PMC
May 2020

Flaxseed and dried tomato waste used together in laying hens diet.

Arch Anim Nutr 2019 Jun;73(3):222-238

a Laboratory of Chemistry and Nutrition Physiology, National Research Development Institute for Animal Biology and Nutrition , Balotesti , Romania.

The aim of this study was to investigate the effects of simultaneous supplementation of laying hens with dietary sources of n-3 polyunsaturated fatty acids (PUFA) and carotenoids on egg quality, fatty acids and carotenoid profile of the egg yolk and on feed and yolk lipid peroxidation. A 6-week experiment was carried out with 53-week old laying hens (96 Tetra SL) assigned to a control and three treatment groups supplemented with 5% flaxseeds and different levels of dried tomato waste (DTW, 2.5%, 5.0% and 10.0%). Hens from the groups supplemented with 5% and 7.5% DTW had a significantly lower average daily feed intake and laying percentage as compared to the control. Increased doses of dietary DTW enhanced yolk Roche colour score in direct correlation with the enrichment of egg yolk in carotenoids but decreased their transfer efficiency from feed to egg. After 4 weeks, egg yolk from hens fed with 5% flaxseeds and 7.5% DTW had increased lutein and zeaxanthin levels (by 29% and 24%, respectively) and the colour score was 3.5 fold higher compared to the control group. As a result of the dietary supplementation with flaxseed, the n-3 fatty acid content was 3.1-3.7-fold higher in egg yolk compared with the control and the n-6/n-3 ratio decreased from 18.3 (control) to 4.1-5.4 in supplemented diets. Dietary supplementation with 5% DTW effectively prevented lipid oxidation of eggs enriched with n-3 PUFA, but the increase in DTW content depressed the absorption and deposition of n-3 PUFA in egg yolk.
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http://dx.doi.org/10.1080/1745039X.2019.1586500DOI Listing
June 2019
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