Polyphenols Applications in the diet of laying hens and its economic benefit

ANTRUEJO, A. E.; ALVAREZ, C. H.; CAPPELLETTI, G. S.; CRAVERI, A. M.; DRAB, S. A.; LAURÍA, D.; MARTINOTTI, S.; PÍCCOLO, P.; SAVOY, J. C.; SAVOY, J. P.; SCOTT, G.; VIOLA, M. N

BIOCELL

UNR editora

Año: 2015 vol. 39 p. 26 - 26

1667 5746

In poultry farms, fly control is an inherent and transcendental activity within all those related to breeding complying with importanthealth and economic objectives. As an alternative to Integrated Pest Management (IPM), in this work polyphenols of red quebracho(Schinopsis lorentzii) were incorporated in the diet of laying hens in order to assess the impact on the population of flies in laying henbarns and to determine if they are economically viable. In a 14-month period (2013-2014), two barns were under study: ?A? (TreatedGroup) and ?B? (Control Group). Both of them were 4 x 100 meters with 5,000 24-weeks old Hy-line laying hens (colour) and hadidentical environmental and management conditions. The two groups were fed laying hen balanced diet, except for group A which wasadded polyphenols extracted from the red quebracho tree cortex (Schinopsis lorentzii) with 70.9% soluble tannin added at 1,000 g/tn offeed. Group A consumed 200kg polyphenols a year supplemented with 4 L DDVP as insecticide during the summer months. Group Btook 365 hs workforce a year to remove guano; during the three summer months, 500 g/T Cyromazina balanced food were administered;4 L of DDVP and 4,000 kg quicklime powder were used over the guano. The density of fly larvae in guano was used as a responsevariable. Ten monthly samples were collected from each barn for 14 consecutive months in a standard unit of a grid=0.20 m2 and thrownin zigzag every 10mts under each cage row and collected at 5cm depth in both barns . The values for this variable according to thenumber of larvae per grid were classified into: High (> 50 larvae), Moderate (between 10 and 50 larvae) and Low o null (< 10 larvae).Over 140 samples, Group A had 7, 16 and 117 larvae respectively, while Group B had 18, 24 and 98 larvae over the same quantity ofsamples. The statistic test χ2 = 8.12 (p