High performing probiotic The new probiotic is a five-strain feed additive, comprising two distinct groups of bacteria that have been carefully se- lected for their working properties. Three strains of enzyme- producing bacteria digest poultry manure and so promote the natural drying of litter, two strains of bioactive peptide- producing bacteria were added to inhibit specific bacterial populations, resulting in reduced bacterial challenge and lower levels of ammonia. With this high performance formu- lation, this probiotic effectively creates a series of barriers to inhibit the growth of pathogenic bacteria. By degrading undigested protein and starch in the litter, it re- duces the substrate available for microbes which, in turn, re- duces the breakdown of uric acid and corresponding ammo- nia volatilization. At the same time, its ability to reduce the water-holding ca- pacity of the litter improves friability and means that unwant- ed bacterial populations are less likely to proliferate. In other words, Enviva Provalen Plus reduces undigested nutrients in the litter and promotes beneficial bacteria to improve the quality of the litter. A dual mode of action that boosts bird health, welfare and performance, while also reducing environmental impact.
Backed by evidence Backed by robust research, the feed additive is proven to con- sistently deliver positive results in numerous commercial poultry settings. A combined analysis of 12 commercial broil- er houses, for example, demonstrated tangible improve- ments in bird growth and a marked reduction in feed costs as a result of improved litter quality. In this study, a nutritional- ly-adequate control diet was fed to four commercial houses, while the control diet supplemented with the feed additive at 500g/tonne was given to eight commercial houses. The trial ran for a total of 180 days, with diets fed to three consecutive flocks for a period of 60 days. Diets were based on corn/soy- bean meal and fed as crumble in the starter phase, and pel- lets in the grower/finisher phase. Flocks 1 and 2 were housed on built up litter, after which the houses were cleaned and filled with new pine shavings for flock 3. Performance parameters measured at the end of each flock found that, on average, those birds receiving feed supple- mented with Enviva Provalen Plus showed a 2.2% improve- ment in feed conversion ratio (FCR) and a 2.1% reduction in feed costs. Equally compelling is the effect of the probiotic supplementation on bird health and welfare. A separate trial involving six commercial houses followed the same method- ology outlined above but aimed to assess the impact of im- proved litter quality on footpad dermatitis and lesions. In both cases, clear improvements were reported; the incidence of footpad dermatitis fell by 35%, while the number of birds without footpad lesions rose to 42.5% – an increase of 17.5% compared to the control (see Figure 1).
Figure 1 - Enviva® Provalen Plus reduces footpad dermatitis and lesions of broilers in commercial settings, as a result of improved litter quality.
Footpad dermatitis incidence (%) Control
Control + Enviva® Provalen Plus + 150 000 CFU/g
Footpad lesion scores (%) Score 0
Score 0
Score 1 Score 1
Score 2 Score 2
17.5 35.0 40.0 90.0 55.0 42.5 25.0 Footpad dermatitis incidence Control (C)
C + Enviva® Provalen Plus at 150 000 CFU/g
40.0
▶ POULTRY WORLD | No. 10, 2020
31
ILLUSTRATION: DUPONT
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