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Subject: Animal Nutrition × Author: Ghosh, Tanay × End date: 2022 × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    Effect of dietary supplementation of feed additive mixture in combination with linseed oil on performance of white leghorn laying chickens
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-10) Ghosh, Tanay; Anil Kumar
    The study was carried out to discern the effects of dietary incorporation of feed additive mixture of black cumin (Nigella sativa), garlic (Allium sativum), and turmeric (Curcuma longa) in combination with linseed oil on production performance, nutrient utilization and certain haematobiochemical parameters in White Leghorn laying hens. A feeding trial of 12 weeks duration was conducted on 28 week old 120 White Leghorn laying chickens. Hens were randomly distributed into four treatment groups with 30 hens per treatment having three replicates in each. Four treatments includes control (T1): basal diet; Treatment 2 (T2): incorporation of 1% herbal feed additives (black cumin, garlic and turmeric powder; 1:1:1 ratio) and 1.5% linseed oil in basal diet; Treatment 3 (T3): incorporation of 1% herbal feed additives (as in T2) and 2% linseed oil in basal diet and Treatment 4 (T4): incorporation of 1% herbal feed additives (as in T2) and 2.5% linseed oil in basal diet. Results showed significant (P<0.05) increase on egg production (71.53%), feed intake (113.32 g) and egg weight (57.64 g) in the treatment group T2 compared to T3 and T4 groups in laying chickens. There was no significant effect on feed conversion ratio and body weight gain among treatment groups. Significantly (P<0.05) higher crude protein utilization was observed in T2 (87.74%) and T3 (86.65%) groups compared to control group. Crude fat utilization was significantly (P<0.05) higher in T2 (90.59%), T3 (91.12%) and T4 (90.77%) groups compared to control T1 (86.92%) group. The egg shell quality parameters in terms of shape index, shell weight, shell weight percentage and shell thickness of eggs did not differ significantly among treatment groups. Significantly (P<0.05) higher albumen height was observed in T2 (7.07 mm), T3 (7.19 mm) and T4 (7.26 mm) groups compared to T1 (6.54 mm) group. Significantly higher albumen weight was observed in T2 and T3 groups compared to control T1 group. Similarly, significantly higher haugh unit was observed in T3 and T4 groups compared to control T1 group. The egg yolk cholesterol and triglycerides were significantly improved in hens fed diet supplemented with black cumin, garlic and turmeric powder in combination with different levels of linseed oil as compared to control group. The haematological values viz., haemoglobin, packed cell volume (PCV), total erythrocyte counts (TEC) and total leucocytes counts (TLC) in the blood showed no significant difference among the treatment groups. The serum biochemical constituents viz., total protein, albumen, calcium, phosphorus did not differed among dietary treatments. However, glucose and globulin concentration differed significantly among treatment groups in laying hens. The serum cholesterol and triglycerides concentration were significantly decreased in the hens fed diets supplemented with black cumin, garlic and turmeric powder mixture in combination with different levels of linseed oil as compared to control group in laying chickens. From the results of the present study, it can be concluded that dietary supplementation of 1% feed additive mixture of black cumin, garlic and turmeric powder in equal proportion in combination with 1.5% linseed oil in basal diet ameliorate egg production with low cholesterol and triglycerides and is cost effective for improving production performance in White Leghorn laying chickens.