An update on ascorbic acid in poultry

Whitehead, C. C.; Keller, Th.

doi:10.1079/wps20030010

Cited by 104 publications

(93 citation statements)

References 85 publications

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“…This result is in partial agreement with our findings; this may probably be due to the low dosage (60 mg/kg) to body weight administered in their experiment. The significant decrease obtained in egg production in the control group compared to the treatment groups in this study confirmed the findings of Whitehead and Keller (2003), that vitamin E exerts both anti-stress and fertility effects on layer chickens. Similar findings on the positive effect of dietary supplementation of vitamins C and E in birds subjected to transport and heat stress were also reported by (Bollengier-Lee et al, 1998;Sahin et al, 2003a;Ciftci et al, 2005).…”

Section: Discussionsupporting

confidence: 78%

Effects of heat stress on some blood parameters and egg production of Shika Brown layer chickens transported by road

2010

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The effects of vitamins C and E on layer chickens transported by road for 6 h during the hot dry season were investigated. Two experimental groups consisting of thirty Shika Brown layers were separately administered vitamins C and E orally just before transportation, while another 30 layers, which were only given sterile water, served as control. Blood samples analyzed before and after transportation in the control layers showed a decrease (p<0.05) in total white blood cell, (p<0.01) lymphocyte and monocyte values, and a significant (p<0.05) and (p<0.001) increase in the values of eosinophils and heterophils post-transportation, respectively. In the experimental groups, post-transportation values of total white blood cells, eosinophils and monocytes were not different (p>0.05) from those obtained before transportation. Heterophil/lymphocyte values were highest in the control group. The result showed that transportation was stressful for the control layers. Post-transportation egg production was not significantly (p>0.05) different in the vitamin E treated group, but values recorded for the vitamin C and control groups were significantly (p<0.05) and (p<0.001) reduced compared to pre-transportation. In conclusion, vitamins C and E administration ameliorated the adverse effect of road transportation stress during the hot dry season.

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Section: Discussionsupporting

confidence: 78%

Effects of heat stress on some blood parameters and egg production of Shika Brown layer chickens transported by road

2010

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“…Njoku and Nwazota (1989) also ascertained that the vitamin C supplement of 200, 400 and 600 mg/kg given to laying hens in tropical conditions caused a proportional increase in the number of eggs laid. Sushil et al (according to Whitehead and Keller, 2003) found that out of all hens kept at an elevated temperature (30°C) from 24 to 40 weeks of age, birds given a diet supplemented with 800 mg/kg vitamin C were characterized by a higher laying rate compared to the control group.…”

Section: Discussionmentioning

confidence: 99%

Effect of dietary vitamin C supplement on reproductive performance of aviary pheasants

Nowaczewski¹,

Kontecka²

2005

CZECH J ANIM SCI

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ABSTRACT:The effects of three doses of vitamin C (100, 200 and 300 mg/kg) added to the feed of reproductive pheasants on egg production, egg fertility and parameters of hatchability were investigated. In experiments I (1999) and II (2000) birds were kept in outdoor aviaries. In 2000, air temperatures recorded on the farm during the experiment were high (25)(26)(27)(28)(29)(30) o C), differing considerably from those recorded in the preceding years. In experiment I no statistically significant differences were shown between the control pheasants and those supplemented with 100 and 200 mg/kg vitamin C in terms of egg production, egg fertility and parameters of hatchability. The poorest results were found in the group of birds receiving a feed supplemented with 300 mg/kg vitamin C. In experiment II, statistically higher egg production and egg fertility were noted, compared to the control group, in the groups supplemented with 100 and 200 mg/kg vitamin C. Compared to the control group, pheasants from these groups were also characterized by higher hatchability from set eggs (by approx. 15 percentage units) and fertilized eggs (by approx. 9 percentage units) and smaller number of unhatched chicks and dead embryos after day 10 of incubation. In experiment II, the beneficial effect of 100 and 200 mg supplements of vitamin C on the studied parameters could result from the soothing action of the vitamin on the effects of heat stress. The present results justify the prophylactic use of vitamin C supplement at 100 mg/kg feed in the nutrition of reproductive pheasants reared in aviaries. Under heat stress (high air temperatures) increasing the dose of this vitamin to 200 mg/kg feed seems beneficial.

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“…Vitamin C (L-ascorbic acid, AA) has an important metabolic role as a result of its reducing properties and functions as an electron carrier (Whitehead and Keller, 2003). AA can be synthesized by poultry (Lin et al 2006) but the endogenous source of AA may not be adequate to meet the full needs of poultry at all times and/or the requirement for AA maybe increased under stressful conditions, like rapid growth and intensive egg production (Whitehead and Keller, 2003;AbdulRahman and Alrahawi, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…AA can be synthesized by poultry (Lin et al 2006) but the endogenous source of AA may not be adequate to meet the full needs of poultry at all times and/or the requirement for AA maybe increased under stressful conditions, like rapid growth and intensive egg production (Whitehead and Keller, 2003;AbdulRahman and Alrahawi, 2012). Medicinal plants and herbs has taken great attention for their antioxidant capacity, and are used in poultry industry to improve the physiological, productive and reproductive performance (Barreto et al 2008;Taha and Abdul-Rahman, 2011;Al-krad et al 2012;Abdul-Rahman andAlobaidy, 2013 andAbdul-Rahman andAl-Kattan, 2013;).…”

Section: Introductionmentioning

confidence: 99%

Effect of Vitamin C, Red Pepper and Oak Leaves on Physiological and Productive Performance of Quail

Tayeb¹,

Abdul-Rahman

Sideeq

2015

KSÜ Doğ. Bil. Derg

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The current study was conducted on the animal production college of agriculture and forestry-University of Duhok, in order to investigate the effect of ration supplementation with vitamin C, red pepper (RP) and oak leaves (OL) on some physiological, reproductive and productive parameters of quail. Four hundred eighty quail birds (7 days) were divided into four groups with three replicates / group (40 birds/replicate, the groups were treated from the age of 7 days till the age of 49 days as follows: T1 (control): Reread on standard ration, T2: Reread on standard ration supplemented with vitamin C(300mg /kg ration). T3: Reread on standard ration supplemented with red pepper crush (5g/kg ration). T4: Reread on standard ration supplemented with oak leaves crush (10g/kg ration).The results of the current study revealed the following: Significant increase in live body weight (LBW) and body weight gain (BWG) of treatment as compared with control, significant decrease in feed consumption (FC) in vit. C group as compared with control, a significant improvement feed conversion ratio (FCR) in OL group as compared with control and in RP and vit. C groups as compared with OL group, a significant decrease in carcass weight of RP group as compared with control and OL groups and in heart relative weight as compared with vit. C group. Significant increase in mean egg weight, hen day (HD) % and egg mass/hen in OL group as compared with control and in as compared with other treatments. Significant increase in serum total protein (TP) and globulin in OL group as compared with vit. C group and a significant decrease in serum albumin in RP group as compared with control of male quail and a significant decrease in serum TP, globulin, albumin and TG in all groups as compared with control of female quail, a significant decrease in Cholesterol in OL group compared with control and in glucose as compared with RP and vit. C groups. Significant improvement in Lymphocyt (L)%, Heterophil (H)% and stress index in OL group of female quail and in L% and in H% in vit. C group of male quail significant improvement in yolk index in OL group and in shell membrane thickness in control group.

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An update on ascorbic acid in poultry

Cited by 104 publications

References 85 publications

Effects of heat stress on some blood parameters and egg production of Shika Brown layer chickens transported by road

Effects of heat stress on some blood parameters and egg production of Shika Brown layer chickens transported by road

Effect of dietary vitamin C supplement on reproductive performance of aviary pheasants

Effect of Vitamin C, Red Pepper and Oak Leaves on Physiological and Productive Performance of Quail

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