scholarly journals Evaluation of dietary vitamin E and selenium supplementation on physiological and fertility potential of indigenous breeds of sheep under heat stress

2018 ◽  
Vol 13 (01) ◽  
pp. 206-213
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Selenium Supplementation ◽  
Dietary Vitamin ◽  
Fertility Potential

scholarly journals Effects of vitamin E and vitamin A supplementation on performance, thyroid status and serum concentrations of some metabolites and minerals in broilers reared under heat stress (32 degrees C)

2001 ◽  
Vol 46 (No. 11–12) ◽  
pp. 286-292 ◽  
Author(s):  
N. Sahin ◽  
K. Sahin ◽  
O. Küçük
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Vitamin A ◽  
Control Diet ◽  
Dietary Vitamin ◽  
Vitamin Supplement ◽  
Serum Concentrations ◽  
Broiler Performance ◽  
Tocopherol Acetate ◽  
Control Serum

An experiment on Cobb-500 male broilers was conducted to evaluate the effects of vitamin E (alfa-tocopherol-acetate), vitamin A (retinol), and their combination on broiler performance and serum concentrations of triiodothyronine (T3), thyroxine (T4), adrenocorticotropine hormone (ACTH) and some metabolite and mineral concentrations in broilers reared under heat stress (32°C). One day-old 120 broilers were randomly assigned to 4 treatment groups, 3 replications of 10 birds each. The birds were fed either a control diet or a control diet supplemented with either vitamin A (15 000 IU retinol/kg diet), vitamin E (250 mg alfa-tocopherol-acetate/kg diet), or a combination of vitamin A and E (15 000 IU retinol plus 250 mg of alfa-tocopherol-acetate/kg diet). Considered separately or as a combination, supplemental vitamin A and vitamin E increased feed intake (P = 0.01) and live weight gain (P = 0.03). However, feed efficiency remained similar in all treatments (P= 0.18). Serum T3 and T4 concentrations were also higher (P ≤ 0.001) with vitamin A, vitamin E, and vitamin A plus vitamin E groups than those of the control. However, ACTH concentration in serum was lower (P ≤ 0.001) in supplemental dietary vitamin groups compared with control. Serum glucose, uric acid, triglyceride, and cholesterol concentrations decreased (P ≤ 0.001) while protein and albumin concentrations increased (P ≤ 0.001) when both dietary vitamin E and vitamin A were supplemented. Serum activities of serum glutamic oxalate transaminase (SGOT) and serum glutamic pyruvate transaminase (SGPT) were not influenced by dietary vitamin E, vitamin A nor by a combination of vitamin A and vitamin E (P > 0.72). However, serum activity of alkaline phosphatase (AP) increased (P ≤ 0.001) with supplemental dietary vitamin E, vitamin A, or a combination of vitamin A and vitamin E. In addition, supplemental dietary vitamin E and vitamin A resulted in an increase in serum concentrations of both Ca and P (P ≤ 0.001). In general, when a significant effect was found for a parameter, the magnitude of responses to vitamin supplements was greatest with the combination of vitamin A and vitamin E, rather than that of each vitamin supplement separately. The results of the present study show that supplementing a combination of dietary vitamin E and vitamin A offers a good management practice to reduce heat stress-related decreases in broiler performance.  

Effects of Vitamin C and Vitamin E on Lipid Peroxidation Status, Serum Hormone, Metabolite, and Mineral Concentrations of Japanese Quails Reared under Heat Stress (34º C)

2002 ◽  
Vol 72 (2) ◽  
pp. 91-100 ◽  
Author(s):  
Kazim Sahin ◽  
Osman Kucuk ◽  
Nurhan Sahin ◽  
Mustafa Sari
Keyword(s):  
Lipid Peroxidation ◽  
Heat Stress ◽  
Vitamin E ◽  
Vitamin C ◽  
Management Practice ◽  
Thyroid Stimulating Hormone ◽  
Dietary Vitamin ◽  
Serum Concentrations ◽  
Japanese Quails ◽  
Mineral Concentrations

This study was conducted to determine the effects of dietary vitamin C (L-ascorbic acid) and vitamin E (a-tocopherol acetate) on lipid peroxidation status measured as MDA and serum triiodothyronine (T3), thyroxine (T4), thyroid-stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), as well as some other serum metabolite and mineral concentrations of Japanese quails reared under heat stress (34º C). One hundred-eighty 10-day-old Japanese quails were randomly assigned to six treatment groups, three replicates of 10 birds each. Using a 2 × 3 factorial design, the birds received two levels of vitamin C (100 and 200 mg/kg of diet) or three levels of vitamin E (125, 250, or 500 mg/kg of diet). Greater dietary vitamin E and vitamin C resulted in a greater serum T3, T4, and TSH (p=0.001), but lower ACTH (p=0.001) concentrations. Serum concentrations of T4 and TSH increased to a greater extent by increasing dietary vitamin C when greater vitamin E levels were fed (interaction, p=0.001). Serum glucose, urea, triglycerides, and cholesterol concentrations decreased (p=0.001), while protein and albumin concentrations increased (p =0.001) when both dietary vitamin C and vitamin E were increased. Serum activities of SGOT and SGPT were not influenced by dietary vitamin C or vitamin E (p>0.43). However, serum activity of AP increased (p=0.001) by increasing both dietary vitamin C and vitamin E. Increasing both dietary vitamin C and vitamin E caused an increase in serum concentrations of Ca, P, K (p=0.001), Fe, and Zn (p=0.01) but a decrease in serum concentrations of Na (p=0.001) and Cu (p=0.01). Interactions between vitamin C and vitamin E were detected for Ca, P, Na, and K (p =0.001). Greater dietary vitamin C and vitamin E resulted in a greater serum and liver vitamin E, C, and A (p_0.05), but lower MDA (p=0.001) concentrations. Results of the present study conclude that supplementing a combination of dietary vitamin C (200 mg) and vitamin E (250–500 mg) offers a good management practice to reduce heat stress-related decreases in performance of Japanese quails.

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.

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