Stalosan F efficacy trial in broiler breeders І. Purpose: Evaluation of Stalosan F economical efficacy in broiler breeders, concerning morbidity, hatching eggs production, hatchability and litter quality. Background: Farm faces bad litter quality during the winter time, due to cold weather, excess moisture in the litter, leading to higher mortality and bad production results. II. Materials and method: 1. Poultry broiler breeder farm located in northwestern Bulgaria, two stages – from day-old chicks to reared pullets and broiler breeders for hatching eggs production. - Capacity of the farm - 33 000 productive broiler ROSS 308. - 6 buildings situated in one place. - Area of each building - 1000 m². - Management – floor system - Density - 5.5 birds per m². - 10% roosters in the flock. - Nesting boxes - 4.5 birds per nest - Bedding material – straw. - Roxell feeding and watering equipment. - Fankom climate control system. - Feed produced locally. 2. Stalosan F – dry broad-spectrum disinfectant applied during the entire production cycle in presence of animals. - Application method – 5 kg capacity tube spreader with a battery powered hand drill. 3. Trial period – 9 ½ months, started on 14.09.2014 and finished on 27.06.2015 - Stalosan F applied regularly to one flock, situated in 3 buildings. - Trial results compared to the average production results of the farm for the last two years. - Total Stalosan F consumption – 1200 kg/building = 3600 kg for the whole flock. IІІ. Trial design: Schedule of DATE MONTH 14.09.2014 21.09.2014 28.09.2014 10.10.2014 25.10.2014 10.11.2014 25.11.2014 10.12.2014 27.12.2014 5.01.2015 15.01.2015 25.01.2015 5.02.2015 15.02.2015 25.02.2015 5.03.2015 15.03.2015 25.03.2015 Sep-14 Oct-14 Nov-14 Dec-14 Jan-15 Feb-15 Mar-15 Stalosan F application: QUANTITY OF STALOSAN F POWDER 50g/sq.m HOUSE No 4 HOUSE No 5 HOUSE No 6 TOTAL 50 50 50 50 50 50 450 50 50 50 50 50 50 50 50 50 300 50 50 50 300 50 50 50 50 50 50 50 50 50 300 50 50 50 50 50 50 450 50 50 50 50 50 50 50 50 50 450 50 50 50 50 50 50 50 50 50 450 50 50 50 09.04.2015 Apr-15 50 50 50 300 21.04.2015 50 50 50 10.05.2015 May-15 50 50 50 300 23.05.2015 50 50 50 11.06.2015 50 50 50 27.06.2015 Jun-15 50 50 50 300 TOTAL Stalosan F/kg 1200 1200 1200 3600 Trial was carried out in 2 buildings x 1000 m² each. Stalosan F applied over the litter in presence of birds with a spreader 3 times per month during the winter period and 2 times monthly for the spring/summer season at dosage 50 gr/m².
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