Effect of age on utilization of selenium by chickens

Zelenka, J.; Fajmonova, E.

doi:10.1093/ps/84.4.543

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…Our findings for Se were not in agreement with those of Hoffman (2007); Ozkan et al (2007) or Zelenka & Fajmonova (2005), who noted that the FCR of broilers fed organic Se supplements was improved compared with that of broilers fed un-supplemented diets.…”

Section: The Effects Of Different Types Of Antioxidants (Se Vitamin contrasting

confidence: 99%

The Effects of Different Types of Antioxidants (Se, Vitamin E and Carotenoids) in Broiler Diets on the Growth Performance, Skin Pigmentation and Liver and Plasma Antioxidant Concentrations

Karadaş

Erdoğan

Kor

et al. 2016

Rev. Bras. Cienc. Avic.

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This study investigated the effects of the addition of different antioxidants to broiler diets on their live performance, liver antioxidant composition and concentrations, immune response, and meat and skin color. A total of 945 three-day-old Ross 308 broiler chicks of both genders were randomly allocated to one of nine dietary treatments (n=105), with three replicates 35 chicks per pen, as follows: T1: control (commercially available corn-and soybean-based broiler diet); T2: selenium (control+0.5 mg/kg Sel-Plex TM Se yeast); T3: vitamin E (control+200 mg/ kg Kavimix-E-50 α-tocopherol acetate); T4: lutein (control+100 mg/kg 5% Lutein Beads XB); T5: lycopene (control+100 mg/kg 5% Lyco Beads XB);T6: canthaxanthin (control+25 mg/kg 10% Carophyll . Feed (starter, grower, developer and finisher phases) and water were provided ad libitum for 42 days. Body weights, feed intake, feed conversion values and plasma carotene concentrations were recorded weekly, and liver antioxidant concentrations were recorded at the end of the experiment. Newcastle disease (LaSota) vaccination was performed on day 22. HI titers were measured on days 14, 21, 35 and 42 to determine the effects of the antioxidants on the immune system.The addition of selenium, vitamin E, and carotenoid supplements to the commercial broiler diet significantly increased antioxidant accumulation in the liver and the plasma. All antioxidants assessed significantly improved the immune response. Selenium and vitamin E supplementation also significantly improved total carotenoid concentrations in the plasma. The carotenoids enhanced skin and meat color. None of the supplements tested influenced growth (p>0.05).

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Section: The Effects Of Different Types Of Antioxidants (Se Vitamin contrasting

confidence: 99%

The Effects of Different Types of Antioxidants (Se, Vitamin E and Carotenoids) in Broiler Diets on the Growth Performance, Skin Pigmentation and Liver and Plasma Antioxidant Concentrations

Karadaş

Erdoğan

Kor

et al. 2016

Rev. Bras. Cienc. Avic.

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“…Edens et al (2001) reported no differences in body weight or feed efficiency when broiler chickens were fed diets containing 0.2 ppm Se from sodium selenite or selenium yeast. The utilization of selenium added as sodium selenite in slow-growing laying-type chickens and in fastgrowing broiler hybrids was examined by Zelenka and Fajmonova (2005). The supplementation of selenium, especially organic selenium, might improve meat quality and shelf life by reducing a drip loss from poultry meat (Edens, 1996).…”

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confidence: 99%

The effect of selenium source on the performance and meat quality of broiler chickens

Sevcikova¹,

Skřivan²,

Dlouhá³

et al. 2006

Czech J. Anim. Sci.

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ABSTRACT:The effect of dietary supplementation of selenium in an organic form on performance, carcass traits and selenium content in tissues of broiler cockerels Ross 308 was studied. The soya-wheat-maize diet contained 50 mg vitamin E/kg. The experiment was conducted on 810 straight-run broiler cockerels randomly divided into 3 groups: group I -control, without selenium supplement; experimental group: II -0.3 mg Se/kg, Se-enriched yeast was applied as a Se source; III -0.3 mg Se/kg, Se-enriched alga Chlorella as a Se source. The broiler chickens were slaughtered at 42 days of age. In performance traits higher (P ≤ 0.05) live weight of broiler chickens was recorded in the experimental groups (II -2 430.6 g and III -2 425.2 g). There were no significant differences between the groups in feed conversion and mortality. Se-enriched alga had the best feed conversion, and selenium supplementation slightly increased mortality in both experimental groups. No significant differences between the groups were found out in carcass traits and dressing percentage. The content of selenium in breast and thigh muscle, feathers and excrements increased (P ≤ 0.05) in both experimental groups compared to the control group. Higher values in breast and thigh muscle and in feathers were measured in the group supplemented with selenium from Se-enriched yeast, also in comparison with the group supplemented with selenium from Se-enriched alga Chlorella. The broiler chickens receiving Chlorella had a higher (P ≤ 0.05) selenium content in excrements compared to the group with Se-enriched yeast. The selenium concentration in liver was higher (P ≤ 0.05) in both experimental groups compared to the control. The supplement of selenium from Se-yeast and Chlorella in the diet for broiler chickens increased the microelement concentration in muscle.

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“…Until Day 4, the values of coefficients of apparent retention of Hg were negative or very low in both hybrids and lower in SG than in FG chicks (Table 1). Observed changes could be explained on the basis of excretion of endogenous nutrients originating primarily from the yolk sac (Zelenka and Fajmonova, 2005) and of the difference between hybrids by different feed intake.…”

Section: Resultsmentioning

confidence: 99%

“…This was the same experiment in which the effect of age upon utilization of selenium was studied (Zelenka and Fajmonova, 2005).…”

Section: Methodsmentioning

confidence: 99%

Effect of age upon retention of mercury in chickens with a different growth rate

Zelenka¹,

Hedbávný²

2007

Vet. Med. - Czech

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Retention of total mercury was examined in groups of 95 slowly-growing laying type chickens and 52 fast-growing broiler hybrids in 47 subsequent balance periods from 1 to 100 days of age. Chickens were fed ad libitum on a diet containing 5.41 µg of Hg per kilogram. Until Day 4 the values of coefficients of apparent retention of Hg were negative or very low. They were influenced by excretion of endogenous nutrients originating primarily from the yolk sac. When evaluating the period of 4 to 100 days of age, the dependence of Hg retention coefficients upon age was highly significant (P < 0.01). The course of this dependence was expressed by parabolas for laying type chickens with the maximum value at Day 61 of age and for broilers with the minimum value at Day 53. In fast growing chickens, Hg content in body gain decreased until Day 14 and then increased while in slow growing chickens it was linearly increasing for the whole experimental period. The average coefficients of Hg retention from the feed mixture were 48.18 ± 0.719 (mean ± SEM) and 47.90 ± 1.057% and Hg retained per g of live body gain were 7.494 ± 0.4682 and 6.775 ± 0.6233 ng in laying and meat type cockerels, respectively. The difference between hybrids was insignificant (P > 0.05). The growth rate of total amount of Hg in the body was lower (P < 0.01) than that of body weight of chickens, allometric coefficients were 0.706 and 0.747 for slow and fast growing chickens, respectively.

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Effect of age on utilization of selenium by chickens

Cited by 8 publications

References 7 publications

The Effects of Different Types of Antioxidants (Se, Vitamin E and Carotenoids) in Broiler Diets on the Growth Performance, Skin Pigmentation and Liver and Plasma Antioxidant Concentrations

The Effects of Different Types of Antioxidants (Se, Vitamin E and Carotenoids) in Broiler Diets on the Growth Performance, Skin Pigmentation and Liver and Plasma Antioxidant Concentrations

The effect of selenium source on the performance and meat quality of broiler chickens

Effect of age upon retention of mercury in chickens with a different growth rate

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