Influence of high dietary vitamin E supplementation on egg production and plasma characteristics in hens subjected to heat stress

1998 ◽  
Vol 39 (1) ◽  
pp. 106-112 ◽  
Author(s):  
S. BOLLENGIER-LEE ◽  
M. A. MITCHELL ◽  
D. B. UTOMO ◽  
P. E. V. WILLIAMS ◽  
C. C. WHITEHEAD
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Egg Production ◽  
Dietary Vitamin ◽  
Plasma Characteristics ◽  
Vitamin E Supplementation

Effects of high levels of vitamin e supplementation in heat stressed laying hens

1995 ◽  
Vol 1995 ◽  
pp. 49-49
Author(s):  
Sandy Bollengier ◽  
G. Uzu ◽  
P.E.V. Williams ◽  
C.C. Whitehead
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Egg Production ◽  
Laying Hens ◽  
Plasma Concentrations ◽  
Short Exposure ◽  
Dietary Vitamin ◽  
Small Scale ◽  
Supplemental Vitamin ◽  
High Level

It was investigated in a small-scale study using a climate-controlled room at IAPGR, Roslin, that the effects of feeding a high level of supplemental vitamin E (500 mg/kg) on egg production and plasma concentrations of egg-associated metabolites in laying hens subjected to a short exposure (7 days) to a moderate heat stress (temperature of 32°C). The study showed, on small group sizes (12 birds / group), that in control birds (fed 30 mg supplemental vitamin E/kg), this degree of heat stress depressed egg production by about 30%. In the birds receiving the high level of vitamin E, egg production was maintained at levels very close to those prior to the heat stress. The objective of this experiment was to confirm in a larger scale the effects of high levels of dietary vitamin E on egg production of hens exposed to a chronic heat stress and during a period of recovery at thermoneutral temperatures.

scholarly journals Optimal dietary concentration of vitamin E for alleviating the effect of heat stress on performance, thyroid status, ACTH and some serum metabolite and mineral concentrations in broilers

2012 ◽  
Vol 47 (No. 4) ◽  
pp. 110-116 ◽  
Author(s):  
K. Sahin ◽  
O. Kucuk ◽  
N. Sahin ◽  
M. F Gursu
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Management Practice ◽  
Live Weight ◽  
Basal Diet ◽  
Dietary Vitamin ◽  
Broiler Chicks ◽  
Serum Concentrations ◽  
Dietary Concentration ◽  
Vitamin E Supplementation

An experiment utilizing Cobb-500 male broilers was conducted to evaluate the effects of vitamin E (d1--to- copheryl acetate) supplementation at various concentrations (0, 62.5, 125, 250, or 500 mg/kg of diet) on performance and serum concentrations of Triiodothyronine (T<sub>3</sub>), Thyroxin (T<sub>4</sub>), Adrenocorticotropine Hormone (ACTH), and some metabolites and minerals in broilers reared under heat stress (32&deg;C). One day-old 150 male broilers were randomly assigned to 5 treatment groups, 3 replicates of 10 birds each. The birds received either a basal diet or basal diet supplemented with vitamin E at 62.5, 125, 250, or 500 mg/kg of diet. Increased supplemental vitamin E linearly increased feed intake (P = 0.01), live weight gain (P = 0.01), and improved feed efficiency linearly (P = 0.001). Increasing dietary vitamin E supplementation also resulted in linear increases in serum T<sub>3 </sub>and T<sub>4</sub> concentrations (P = 0.01) but, linear decreases in ACTH concentration (P = 0.01). Serum glucose, uric acid, triglycerides, and cholesterol concentrations decreased linearly (P = 0.001) while, protein and albumin concentrations increased linearly (P = 0.001) when dietary vitamin E supplementation increased. Serum activities of Serum Glutamic Oxalate Transaminase (SGOT) and Serum Glutamic Pyruvate Transaminase (SGPT) were not influenced by dietary vitamin E supplementation (P &gt; 0.10). However, serum activity of Alkaline Phosphatase (AP) increased linearly (P = 0.001) with increasing dietary vitamin E supplementation. Increasing dietary vitamin E supplementation also caused linear increases (P = 0.001) in serum concentrations of Ca and P. Results of the present study conclude that a 250 mg/kg of vitamin E provides an optimal performance in broiler chicks reared under heat stress, and vitamin E supplementation at such a level can be considered as a protective management practice in a broiler diet, reducing the negative effects of heat stress.

scholarly journals Protective role of supplemental vitamin E on lipid peroxidation, vitamins E, A and some mineral concentrations of broilers reared under heat stress

2001 ◽  
Vol 46 (No. 5) ◽  
pp. 140-144 ◽  
Author(s):  
K. Sahin ◽  
N. Sahin ◽  
M. Onderci ◽  
S. Yaralioglu ◽  
O. Kucuk
Keyword(s):  
Lipid Peroxidation ◽  
Heat Stress ◽  
Vitamin E ◽  
Management Practice ◽  
Serum Vitamin ◽  
Basal Diet ◽  
Dietary Vitamin ◽  
Broiler Chicks ◽  
Supplemental Vitamin ◽  
Vitamin E Supplementation

An experiment utilizing Cobb-500 male broilers was conducted to evaluate the effects of vitamin E supplementation at various concentrations on malonyldialdehyde (MDA) as an indicator of lipid peroxidation, serum and liver concentrations of antioxidant vitamins and some minerals of broilers reared under heat stress (32&deg;C). One day-old 150 male broilers were randomly assigned to 5 treatment groups, 3 replicates of 10 birds each. The birds received either a basal diet or basal diet supplemented with vitamin E (dl-a-tocopherol acetate) at 62.5, 125, 250, or 500 mg/kg of diet. Increased supplemental vitamin E linearly increased serum vitamin E and A, but decreased (P&nbsp;= 0.001) MDA concentrations. Increasing dietary vitamin E supplementation also resulted in linear increases in liver vitamin E and A concentrations, but linear decreases in MDA concentrations (P&nbsp;= 0.01). Increasing dietary vitamin E caused a linear increase in serum concentrations of Fe and Zn (P= 0.001), but a decrease in serum concentration of Cu (P&nbsp;= 0.001). Results of the present study conclude that in broiler chicks reared under heat stress a 250 mg of vitamin E supplementation can be considered as a protective management practice in a broiler diet, reducing the negative effects of heat stress.

Effects of high levels of vitamin e supplementation in heat stressed laying hens

1995 ◽  
Vol 1995 ◽  
pp. 49-49
Author(s):  
Sandy Bollengier ◽  
G. Uzu ◽  
P.E.V. Williams ◽  
C.C. Whitehead
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Egg Production ◽  
Laying Hens ◽  
Plasma Concentrations ◽  
Short Exposure ◽  
Dietary Vitamin ◽  
Small Scale ◽  
Supplemental Vitamin ◽  
High Level

It was investigated in a small-scale study using a climate-controlled room at IAPGR, Roslin, that the effects of feeding a high level of supplemental vitamin E (500 mg/kg) on egg production and plasma concentrations of egg-associated metabolites in laying hens subjected to a short exposure (7 days) to a moderate heat stress (temperature of 32°C). The study showed, on small group sizes (12 birds / group), that in control birds (fed 30 mg supplemental vitamin E/kg), this degree of heat stress depressed egg production by about 30%. In the birds receiving the high level of vitamin E, egg production was maintained at levels very close to those prior to the heat stress. The objective of this experiment was to confirm in a larger scale the effects of high levels of dietary vitamin E on egg production of hens exposed to a chronic heat stress and during a period of recovery at thermoneutral temperatures.

scholarly journals THE EFFECT OF DIETARY VITAMIN E AND ZINC LEVELS ON PERFORMANCE AND LIPID OXIDATION IN FRESH AND STORED EGGS OF LAYING DUCKS

2017 ◽  
Vol 41 (2) ◽  
pp. 169
Author(s):  
Arif Darmawan ◽  
Sumiati Sumiati ◽  
Widya Hermana
Keyword(s):  
Vitamin E ◽  
Feed Intake ◽  
Egg Production ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Dietary Vitamin ◽  
Feed Conversion ◽  
Egg Weight ◽  
Organic Zinc ◽  
Zinc Levels

Vitamin E and zinc are necessary for preventing free radical damage to phospholipid membranes, enzymes and other important molecules. The objective of this study was to evaluate the effect of dietary vitamin E and zinc levels on performance and lipid oxidation in fresh and stored eggs of laying duck. A total of 90 of 22 weeks old ducks were randomly divided into 15 experimental units by assigning a completely randomized design with 5 treatments and 3 replications. The treatment diets were R1 (control diet), R2 (R1+40 IU vitamin E), R3 (R1+80 IU vitamin E), R4 (R1+100 ppm organic zinc), and R5 (R1+200 ppm organic zinc).The experiment was carried out for 8 wk. Parameters observed were feed intake, egg production, egg weight, feed conversion ratio, and Thiobarbituric Acid Reactive Substances (TBARS) value. The results showed that increasing of vitamin E from 40 IU to 80 IU and zinc from 100 ppm to 200 ppm did not affect feed intake and egg weight. Otherwise, the dietary Vitamin E and organic zinc significantly decreased (P<0.05) feed conversion ratio and significantly increased (P<0.05) egg production and decreased (P<0.01) TBARS values. It is concluded that dietary 40 IU vitamin E or 100 ppm organic zinc could increase the performance of laying ducks and dietary 200 ppm organic zinc was more efective to be antioxidant than 40 and 80 IU vitamin E.   

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