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Effect Of Vitamin E And Selenium Supplementation On The Performance, Carcass Characteristics And Immune Response in Broilers

By: Syed Kaleem -Ul- Hassan | Dr.Abdul Waheed Sahota.
Contributor(s): Prof. Dr.Muhammad Akram.
Material type: materialTypeLabelBookPublisher: 2007Subject(s): Department of Poultry ProductionDDC classification: 1002,T Dissertation note: The present study was conducted to examine the effect of vitamin E and selenium supplementation on the performance, carcass characteristics and immune response in broilers. For this purpose, 400 commercial day old broiler chicks of Hubbard strain were purchased from a reputed local hatchery. They were maintained in experimental poultry house, Department of Poultry Production, University of Veterinary and Animal Sciences, Lahore during the month of July & August. The chicks were randomly divided into 4 equal experimental groups viz. without supplementation, selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented, each comprising 100 chicks. The chicks in each group were further randomly sub-divided into 10 replicates of 10 chicks each. All the experimental chicks were initially weighed and individually tagged for identification and kept in 40 pens (10 birds/pen) on littered floor under optimal managemental conditions. The experimental birds were protected against Newcastle Disease through prophylactic vaccination at the age of 4 days (Intraocular route) and then at 21 days (drinking water). Prophylactic vaccination against Infectious Bursal Disease was also performed at 14 and 28 days through drinking water. The birds were given selenium (3mg/kg feed), vitamin E (200 mg/kg feed) and vitamin E+selenium (lcc/10L drinking water) in selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented groups, respectively, and those in without supplementation were maintained as non-supplemented group. Body weight gain and feed intake were recorded weekly to calculate the Feed Conversion Ratio. At the end of experiment mortality, carcass characteristics, anti-NDV titre were recorded and economics of the project was calculated. The results of this study indicated significant (P<0.05) differences in feed intake and feed conversion ratio due to supplementation with selenium and vitamin E, however, a non-significant effect on body weight gain of broilers was observed due to supplementation. The feed intake in group without supplementation was significantly (P<0.05) different from all other groups, however, non-significant difference was observed in feed intake of groups selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented. FCR in group without supplementation was significantly poor than those of other groups, however, non-significant difference in FCR of groups selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented was observed. Results obtained from the study showed significant (P<0.05) differences on carcass characteristics i.e. liver weight and bursa weight, however, non-significant difference in dressing percentage, shank length, keel length, gizzard weight, heart weight, spleen weight and bursa of fabricious diameter due to supplementation of selenium and vitamin E was observed. Statistically significant (P<0.05) difference was found in liver weight of broilers between without supplemented and supplemented groups. The liver weight in group selenium supplemented was significantly greater from group without supplementation, however, non-significant difference was observed in liver weight of groups without supplementation, vitamin E supplemented and vitamin E+selenium supplemented. The bursa weight of the birds in group vitamin E+selenium supplemented was significantly lower from all groups, however, non-significant differences were observed among the birds in groups without supplementation, selenium supplemented and vitamin E supplemented. The results in respect of antibody titres against New castle disease virus vaccine showed that the groups supplemented either with selenium and vitamin E alone or in combination through feed or drinking water gave higher anti-NDV titre than un-supplemented group. The values obtained were 5.30, 6.77, 7.06 and 7.80 for without supplementation, selenium supplemented, vitamin E supplemented and vitamin E+selenium (D), respectively. The economics of production of broilers in different experimental groups indicated that average cost of production remained RS 91.86, 88.21,86.84 and 87.61 in groups without supplementation (A), selenium supplemented (B), vitamin E supplemented (C) and vitamin E+selenium supplemented (D), respectively, showing a higher cost of production in groups B, C and D by RS 3.65, 5.02 and 4.25, respectively in comparison to the control group on account of additional cost of supplementation with selenium, vitamin E and vitamin E+selenium, respectively. The average return came out to be RS 102.042, 104.304, 104.034 and 103.20 in groups A, B, C and D, respectively, and this variation was due to difference in cost of feed intake and weight gain of broilers in different groups. The average profit per bird in groups A, B, C and D was found to be RS 10.182, 16.094, 17.195 and RS 15.586, respectively, indicating a higher margin of profit in groups B, C and D by RS 5.912, 7.013 and 5.404, respectively, in comparison to the control group. CONCLUSION Based on the findings of this study it may be stated that dietary supplementation of selenium (3 mg/kg feed) in broilers may improve feed conversion efficiency. The dietary supplementation with vitamin E (200 mg/kg feed) may increase anti-NDV titres and may enhance economic returns in broilers.
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Veterinary Science 1002,T (Browse shelf) Available 1002,T
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The present study was conducted to examine the effect of vitamin E and selenium supplementation on the performance, carcass characteristics and immune response in broilers. For this purpose, 400 commercial day old broiler chicks of Hubbard strain were purchased from a reputed local hatchery. They were maintained in experimental poultry house, Department of Poultry Production, University of Veterinary and Animal Sciences, Lahore during the month of July & August. The chicks were randomly divided into 4 equal experimental groups viz. without supplementation, selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented, each comprising 100 chicks. The chicks in each group were further randomly sub-divided into 10 replicates of 10 chicks each. All the experimental chicks were initially weighed and individually tagged for identification and kept in 40 pens (10 birds/pen) on littered floor under optimal managemental conditions. The experimental birds were protected against Newcastle Disease through prophylactic vaccination at the age of 4 days (Intraocular route) and then at 21 days (drinking water). Prophylactic vaccination against Infectious Bursal Disease was also performed at 14 and 28 days through drinking water. The birds were given selenium (3mg/kg feed), vitamin E (200 mg/kg feed) and vitamin E+selenium (lcc/10L drinking water) in selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented groups, respectively, and those in without supplementation were maintained as non-supplemented group. Body weight gain and feed intake were recorded weekly to calculate the Feed Conversion Ratio. At the end of experiment mortality, carcass characteristics, anti-NDV titre were recorded and economics of the project was calculated.

The results of this study indicated significant (P<0.05) differences in feed intake and feed conversion ratio due to supplementation with selenium and vitamin E, however, a non-significant effect on body weight gain of broilers was observed due to supplementation. The feed intake in group without supplementation was significantly (P<0.05) different from all other groups, however, non-significant difference was observed in feed intake of groups selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented. FCR in group without supplementation was significantly poor than those of other groups, however, non-significant difference in FCR of groups selenium supplemented, vitamin E supplemented and vitamin E+selenium supplemented was observed.

Results obtained from the study showed significant (P<0.05) differences on carcass characteristics i.e. liver weight and bursa weight, however, non-significant difference in dressing percentage, shank length, keel length, gizzard weight, heart weight, spleen weight and bursa of fabricious diameter due to supplementation of selenium and vitamin E was observed. Statistically significant (P<0.05) difference was found in liver weight of broilers between without supplemented and supplemented groups. The liver weight in group selenium supplemented was significantly greater from group without supplementation, however, non-significant difference was observed in liver weight of groups without supplementation, vitamin E supplemented and vitamin E+selenium supplemented. The bursa weight of the birds in group vitamin E+selenium supplemented was significantly lower from all groups, however, non-significant differences were observed among the birds in groups without supplementation, selenium supplemented and vitamin E supplemented.

The results in respect of antibody titres against New castle disease virus vaccine showed that the groups supplemented either with selenium and vitamin E alone or in combination through feed or drinking water gave higher anti-NDV titre than un-supplemented group. The values obtained were 5.30, 6.77, 7.06 and 7.80 for without supplementation, selenium supplemented, vitamin E supplemented and vitamin E+selenium (D), respectively.

The economics of production of broilers in different experimental groups indicated that average cost of production remained RS 91.86, 88.21,86.84 and 87.61 in groups without supplementation (A), selenium supplemented (B), vitamin E supplemented (C) and vitamin E+selenium supplemented (D), respectively, showing a higher cost of production in groups B, C and D by RS 3.65, 5.02 and 4.25, respectively in comparison to the control group on account of additional cost of supplementation with selenium, vitamin E and vitamin E+selenium, respectively. The average return came out to be RS 102.042, 104.304, 104.034 and 103.20 in groups A, B, C and D, respectively, and this variation was due to difference in cost of feed intake and weight gain of broilers in different groups. The average profit per bird in groups A, B, C and D was found to be RS 10.182, 16.094, 17.195 and RS 15.586, respectively, indicating a higher margin of profit in groups B, C and D by RS 5.912, 7.013 and 5.404, respectively, in comparison to the control group.

CONCLUSION
Based on the findings of this study it may be stated that dietary supplementation of selenium (3 mg/kg feed) in broilers may improve feed conversion efficiency. The dietary supplementation with vitamin E (200 mg/kg feed) may increase anti-NDV titres and may enhance economic returns in broilers.

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