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Comparative Efficiacy Of Different Supplemental Nutrients Used To Combat Heat Stress In Broilers

by Mussarat Hussain Joiya | Dr. Farina Malik Khattak | Dr. Athar Mahmud | Dr. Makhdoom.

Material type: book Book; Format: print Publisher: 2006Dissertation note: NaHCO3. Serum sodium was higher (P<O.05) in control group compared to all other treatments. Whereas, no differences in serum K and Cl concentrations were observed. TLC values were higher (P<O.05) in birds fed on diets containing feed supplements compared to control group. Mortality in control group A was highest (33%) as compared to group B, C, D and E which was 3.3, 16, 23 and 6.6% respectively. Rectal temperatures of all treated groups were similar (3 7°C) to those of control birds. This study clearly indicated that when ambient temperature rises above 40°C birds require feed supplement to combat heat stress. Availability: Items available for loan: UVAS Library [Call number: 0939,T] (1).

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Effect Of Light Restriction On Performance Of Baroilers Fed Conventional And Non Conventional and Non Conventional Growth Promoters

by Shafique-ur-Rahman | Dr. Athar Mahmood | Prof.Dr | Dr. Farina Malik Khattak.

Material type: book Book; Format: print ; Literary form: not fiction Publisher: 2006Dissertation note: This study was performed to investigate the effects of light restriction and non conventional growth promoters on growth performance of broilers. For this purpose one hundred and eighty broiler chicks were grown in an open sided house for a period 42 days. Chicks were randomly distributed into four groups (A, B, C and D) each containing five replicates with nine birds each. Groups A and B were reared under continuous light, groups C and D received restricted light of 20 hrs light and 4 hrs dark.. Groups A and C were fed with diet containing conventional growth promoter. Zinc bacitracin at dose rate of 0.5 grams per kilogram of feed was used as a conventional growth promoter. Groups B and D received non conventional growth promoters. Botanical growth promoter 1 (B.G.P 1) was used as non conventional growth promoter dose rate was 1 gram per kilogram of feed. Body weight gain and feed intake was recorded weekly. At the end of the experiment mortality, microbial count and economics of the project was calculated. Data revealed that birds in all groups had non significant (P>0.05) weight gain, feed intake and FCR when compared with each other. Microbial count was higher in groups fed with conventional growth promoters than non conventional growth promoters. Mortality in control group A was highest (8.8%) as compared to group B, C and D which was 4.4. 6.6 and 0% respectively. Rectal temperatures of all treated groups were similar (37oC) to those of control birds. This study clearly indicated that non conventional growth promoter can be used in place of conventional growth promoters and restricted lighting reduces mortality and electricity cost. Availability: Items available for loan: UVAS Library [Call number: 0956,T] (1).

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