Effect of Dietary Supplementation with Milk Thistle (Silybum marianum (L)) Extract on Performance and Egg Shell Quality of Older Laying Hens

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srinoy chumkam
Orapin Jintasataporn


The objective of this study was to investigate the effects of supplementing milk thistle in the diet of old laying hen on productive performance and egg quality. A total of 96 commercial laying hens, 85 weeksold, were randomly distributed in completely randomized design(CRD), 3 treatments and 4 replications with 8 birds in each replication. The experimental treatments were:1) basal diet, 2) basal diet supplemented with 60 ppm milk thistle and 3) basal diet supplemented with 150 ppm milk thistle. The experimental period was 12 weeks. The results revealed that egg production, egg weight, egg mass, feed intake/day, feed intake/dozen of egg, survival rate, feed cost/kg of egg, feed cost/egg, Hauge unit, yolk index, yolk color, specific gravity, egg shell thickness, egg shell weight, percentage of egg shell and shape index were not significant different (P>0.05). Feed intake/dozenof egg in group of basal diet supplemented with150 ppm milk thistle tended to be lower than other groups (P=0.09). Supplementing the diet with 60 ppm milk thistle indicated the significant effects (P<0.05) on redness (a*) and yellowness (b*) of egg yolk color but there were no significant difference in egg shell color (∆E) and brightness( L*). In conclusion, supplementing the diet with 150 ppm milk thistle tended to decrease feed intake for egg production.


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chumkam, srinoy, & Jintasataporn อ. . (2021). Effect of Dietary Supplementation with Milk Thistle (Silybum marianum (L)) Extract on Performance and Egg Shell Quality of Older Laying Hens . Journal of Vocational Institute of Agriculture, 5(1), 40–48. Retrieved from https://li01.tci-thaijo.org/index.php/JVIA/article/view/247843
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