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Publisher: PVNR TVU
Language: en
Type: Thesis
Pages: 88
Agrotags: null
Abstract: The study was conducted to assess the three types of probiotic (100 & 200g/ton) and bacitracin methylene disalicylate (50g/ton) supplemented in diet on is caloric and iso nitrogenous basis. A total of 288 White Leghorn layers were allocated to each of the eight treatments in a replicated manner, six replicates per treatment. The diets were fed from 16 week of age (six birds/replicate) and evaluated production performance from 22 to 37 week of age. The trial results revealed that, the per cent hen day egg production for four laying periods in White Leghorn layers (BV300) from 22 to 37 weeks of age was significantly (P<0.05) influenced by supplementation of probiotics and bacitracin methylene disalicylate (BMD). The higher per cent egg production was noticed in probiotic-2 @100g/ton (91.77%) compared to all other treatments. The mean feed intake and feed conversion ratio per dozen eggs were significantly (P<0.05) influenced by supplementation of probiotics and BMD. The feed intake was significantly (P<0.05) lower in control group (112.16g) and highest in probiotic-3 @200g/ton of feed (118.79g). The better feed conversion ratio per dozen eggs was noticed in probiotic-2 @ 100g/ton (1.527) and poor in probiotic-2 & 3 @200 g per ton of feed (1.633 & 1.600) during 22-37 weeks of age. A significant difference (P<0.05) was observed in egg weights . The higher egg weight in probiotic-1@100g/ton(58.84g). The internal and external egg quality parameters of haugh unit, yolk index, shell thickness, shell percentage and shell strength were significantly (P<0.05) influenced by supplementation of probiotics and BMD at different graded levels. Whereas albumen index, shell weight and density were not influenced by all the dietary supplementation groups. The mortality was within the limits during 22-37 weeks of age. The probiotic at (100 & 200g/ton) supplemented in diet influenced Net profit per dozen eggs and is highest in probiotic -2 @100 g/ton of feed (Rs.9.43) compared with control (Rs 8.67) during the 22-37 weeks of age. It can be concluded that, multi strain probotic-2 @ 100g/ton of feed can be supplemented as an alternative to antibiotic (BMD) which show better performance compared to the single strain probiotic-1 @ 100g/ton of feed and control. Probotic-2 @ 100g/ton of feed has exhibited better production performance in commercial White Leghorn layer birds during the 22-37 weeks of age.
Description: D-679
Subject: Poultry Science
Theme: VPS
These Type: M.V.Sc.
Issue Date: 2019-12-20
Appears in Collections:Thesis

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