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Twilmij introduces Genial INTEGRAL for broiler chicks feed

tue 03 okt 2017

Since the 2006 ban on in-feed antibiotics and the reduction of curative use of antibiotics, bowel health has been an important area of focus for the Western European broiler chick sector. There is a close link between bowel health and litter quality, the incidence of foot sole lesions and technical results. Economic loss in case of intestinal disorders can amount to as much as 5ct. per chick, especially if the situation is not addressed in time.

Since the 2006 ban on in-feed antibiotics and the reduction of curative use of antibiotics, bowel health has been an important area of focus for the Western European broiler chick sector. There is a close link between bowel health and litter quality, the incidence of foot sole lesions and technical results. Economic loss in case of intestinal disorders can amount to as much as 5ct. per chick, especially if the situation is not addressed in time.

The Eimeria species and Clostridium perfringens are often named as potential causes of intestinal problems such as coccidiosis and necrotising enteritis (NE). In many broiler chick flocks, these microorganisms cause subclinical problems such as a disturbed water/feed ratio, somewhat wetter manure and disappointing feed conversion. It is likely that the status of intestinal health also plays a part in the colonisation (or lack thereof) of other pathogenic microbes such as E. coli (inflammation of the residual yolk sac) and Enterococcus caecorum (joint inflammation).

Controlling intestinal health is therefore an important area of focus for the broiler chick industry. In addition to management and (veterinary) guidance, an important role is also played by nutritionists working for broiler chick feed producers. The foundations must be sound; before choosing one or more products it is important that the mixed feed production process, nutrient supply per age phase (protein, minerals!), the application of enzymes and coccidiostats, etc., are all correct.

Based on available literature and our own broiler chick trials, combinations of medium-chain fatty acids (especially lauric acid), lactylates and coated butyrate are the most promising additions to support intestinal health. Essential oils can further enhance this effect. Application of pre- and probiotics may also be useful in certain circumstances (e.g. the first days of life) but require further investigation.

In 2016 Twilmij collaborated with Z.T.C. Leuven, GvP Emmen and Corbion for a broiler chick trial examining the effect of lactylates, whether or not combined with Genial BUTYGAN (coated butyrate with oregano extract). 576 Ross 308 male birds were randomly distributed over 36 pens and six treatments. The trial was conducted in a 2x3 setup: (1) control, (2) as 1. + 0.1% Aloapur CP, (3) as 1. + 0.2% Aloapur, (4) as 1. + Genial BUTYGAN (0.1% in starter feed and 0.05% in grower and finisher feeds), (5) as 2. + Genial BUTYGAN and (6) as 3. + Genial BUTYGAN. The chicks were given a 3-phase feed program with wheat-soy-corn-based feed and nutrient levels in accordance with CVB. In order to obtain a certain level of challenge, the feed contained 2.5-5% rye, and no enzymes and coccidiostats were added. The chicks were housed at a stocking density in line with practical conditions and had ad libitum access to feed and water. Weight, mortality rate and feed intake (per pen) were determined on day 1, then on days 14, 28 and 39, to obtain a calculation for daily growth, feed uptake and feed conversion. On days 21, 28 and 39 the litter of each pen was visually assessed and scored. Foot sole lesion scores were also determined on day 39. On day 28 one chick per pen was culled to determine intestinal morphologic parameters; intestinal contents were also collected for microbiota analysis.

The addition of lactylates improved feed conversion in the finishing period and the entire round numerically (-/-0.04) through lower feed uptake. The positive effect of lactylates on feed conversion was most notable in feeds containing Genial BUTYGAN (-/- 0.06); there was a tendency towards interaction between lactylates and Genial BUTYGAN in the growth phase. The chicks that were administered Genial BUTYGAN were found to have longer villi in the jejunum and deeper crypts. The addition of both lactylate and Genial BUTYGAN improved histological intestinal scores, indicating fewer inflammatory cells in the intestine. The remaining intestinal morphological parameters (mortality, litter quality and foot sole lesion score) were not significantly affected by any of the treatments. The effect on the microbiota in the jejunum content was especially interesting. The combination of lactylates and Genial BUTYGAN reduced the number of eubacteria and lactobacilli. The feed treatments had no effect on the other analysed microbes.

In addition to the singular Genial BUTYGAN Twilmij has developed Genial Integral on the basis of these new trial results, in which Genial BUTYGAN is combined with lactylates. The recommended dose of Genial INTEGRAL is 0.25%, 0.20% and 0.15% in (pre) starter, grower and finisher feeds respectively.

For more information please contact Marien van den Brink, poultry nutritionist mvdbrink@twilmij.nl