Do rearing system and free-range stocking density affect meat quality of chickens fed feed mixture with rapeseed oil?

Skřivanová, V.; Tůmová, E.; Englmaierová, M.; Chodová, Darina; Skřivan, M.

doi:10.17221/79/2016-cjas

Cited by 11 publications

(8 citation statements)

References 28 publications

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“…Therefore, the MDA content of CG meat could be higher than that of NG meat. However, Skřivanová et al [30] observed better oxidative stability in the breast meat of indoor chickens compared to free-range chickens. Furthermore, storage time affected lipid oxidation in the meat of CG females in this study, which had an extremely high MDA content (13.85 mg/kg) after 5 days of storage.…”

Section: Discussionmentioning

confidence: 99%

Fatty acid composition of goose meat depending on genotype and sex

Uhlířová

Tůmová

Chodová

et al. 2019

Asian-Australas J Anim Sci

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Section: Discussionmentioning

confidence: 99%

Fatty acid composition of goose meat depending on genotype and sex

Uhlířová

Tůmová

Chodová

et al. 2019

Asian-Australas J Anim Sci

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“…Alfalfa, as a natural source of carotenoids, increases concentrations of lutein, zeaxanthin, and β-carotene in egg yolks (Karadas et al 2006). Additionally, the possibility of grazing (Skrivanova et al 2017a) or marigold extract additive can increase carotenoids content in poultry products (Skrivanova et al 2017b). Lutein-enriched eggs have greater lutein bioavailability for humans than do other supplements (Chung et al 2004).…”

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confidence: 99%

Alfalfa meal as a source of carotenoids in combination with ascorbic acid in the diet of laying hens

Englmaierová¹,

Skřivan²,

Vít³

2019

CZECH J ANIM SCI

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The purpose of the experiment was to determine how the addition of dehydrated alfalfa (DA) and ascorbic acid (AA) into the diet of hens influences the performance characteristics and egg quality characterised by physical parameters, yolk carotenoid content, and the oxidative stability of yolks. Two hundred and forty Hisex Brown hens were divided into 6 treatment groups according to the level of DA (0 and 40 g/kg) and concentration of AA (0, 100, and 200 mg/kg) in the diet. Hen-day egg production and egg mass production were reduced by the supplement of DA (P < 0.001) and AA (P = 0.017). The addition of DA itself increased the feed intake per egg (P < 0.001) and the feed conversion ratio (P < 0.001). The heaviest eggs (P < 0.001) were laid by hens fed a diet with 100 mg/kg of AA (67.6 g). The AA supplement improved egg content quality, i.e., Haugh units (P < 0.001), albumen index (P < 0.001), and yolk index (P < 0.001), whereas the addition of DA increased values of yolk colour (P < 0.001) and had a negative effect on shell quality. The interaction of DA and AA was detected in the zeaxanthin concentration in the yolks (P = 0.002). The highest concentration was found in eggs from hens fed a diet with a DA supplement and 100 or 200 mg/kg of AA (17.33 or 17.25 mg/kg dry matter of yolk). In addition, 40 g/kg of DA significantly increased the concentration of other carotenoids, lutein (P < 0.001) and β-carotene (P < 0.001) in the yolks and increased the oxidative stability of fresh eggs (P < 0.001). The results suggest that adding DA in the amount of 40 g/kg to the hen diet provides a good source of carotenoids and, in combination with AA, a better deposition of carotenoids in egg yolks. On the other hand, DA deteriorates performance and shell quality.

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“…It should be borne in mind that microorganisms of direct action (PrimaLac and Salinoycin) have an ambiguous effect on different parts of the small intestine. In the duodenum, under the influence of these substances, the height of the villi and crypts increases, and in the ileum, on the contrary, it decreases (Skřivanová et al, 2017).…”

Section: Resultsmentioning

confidence: 95%

Structural Changes in the Digestive Tract of Broilers when Introducing a Probiotic

Prosekova¹,

Panov²,

Cherepanova³

et al. 2021

J Biochem Technol

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The authors have studied the influence of a probiotic and a gastrointestinal adsorbent on the histostructure of the digestive tract of broilers. Day-old broilers were divided into groups of 50 heads each by the method of analog pairs in terms of live weight. Control broilers received a basic diet. Broilers of the 1st experimental group during the first three days of the experiment received probiotic Vetom-1.1 (0.006%) containing spores of Bacillus subtilis with the basic diet, and broilers of the 2nd experimental group received gastrointestinal adsorbent Enterosgel (0.008%). For histological studies, three heads of broilers were selected at day 1 of age, day 4 of age, and at the end of the experiment (after the end of feeding the preparation and before the transition to the basic diet) from the average weight of each group. Samples were excised from the middle of the crop, the glandular part of the stomach, the duodenum, the jejunum, and the proximal part of the cecum of birds. At the end of the experiment, the positive aftereffect of the preparation persisted in the crop and duodenum. At the same time, in the experimental group, the thickness of the submucous membrane of the stomach decreased, and in the cecum, the layer of villi increased.

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Do rearing system and free-range stocking density affect meat quality of chickens fed feed mixture with rapeseed oil?

Cited by 11 publications

References 28 publications

Fatty acid composition of goose meat depending on genotype and sex

Fatty acid composition of goose meat depending on genotype and sex

Alfalfa meal as a source of carotenoids in combination with ascorbic acid in the diet of laying hens

Structural Changes in the Digestive Tract of Broilers when Introducing a Probiotic

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