A unique ensoxilanase offers improved egg quality potential with improved bowel health
Since eggshell quality has a significant impact on the profitability of spawning farms, enzyme selection should be made not only by considering the effects on energy enhancement and performance, but also on egg quality.
Kurt Van de Mierop - Manager, Nutrex, Belgium
In many Asian countries, the use of xylanases is associated with periods when wheat-based diets are used. These diets are believed to be necessary because of their thickening ability to improve wheat digestibility and rash quality. When the years of wheat were passed and corn became more convenient or cheaper, the use of xylanase was often abandoned or at best seen as a secondary element. Often forgotten is that in corn and many other plant materials, arabinoxilane (AX), a substructure of xylanase, is also present in substantial amounts. Furthermore, arabinoxylan is largely insoluble and difficult to break down, and a xylanase must have different properties to have a beneficial effect in such diets.
Many people either forget or are unaware that the amount of insoluble AX present in vegetables (wheat, corn and other similar raw materials) offers a unique potential for the production of prebiotic oligosaccharides via enzyme. Partial hydrolysis of soluble and insoluble AX to smaller arabinoxylene oligosaccharides (AXOS) ferments them faster and supports the desired microbiota. This leads to significant production of the desired SCFAs (short chain fatty acids), especially butyrate, and also improves morphological and histological changes in the small intestine.
INTESTINAL HEALTH AND EGG SHELL QUALITY
Improved bowel health not only affects nutrient digestion, but also affects body structure and egg shell quality. Low quality crust is one of the most important problems of poultry and also affects the economic profitability of egg production and hatching. Cracked or broken eggs constitute 80-90% of the total spoiled eggs. The eggs are separated because they are cracked or cracked. One of the main concerns is that shell quality decreases as the age of the chicken increases because the proportion of broken eggs may exceed 20 percent at the end of the spawning period. Furthermore, the high shear strength of the shells and the absence of shell defects are necessary for protection against penetration of pathogenic bacteria into the egg. Several studies in the past have shown the positive effects of Nutraz Xyla on the microbiotic structure. Alireza et al. (2015) designed a study to demonstrate the real mechanism by which intestinal microbiota is affected by additional feed enzymes. Bacteria xylanase, Clostridium cluster IV (butyrate producers) and butyryl CoA-acetate significantly increased the number of bacteria of CoA-transferase genes (Table 1). In addition to the effect on the microbiota, intestinal morphology was clearly influenced because villus length and villus / crypt ratio increased by 24 percent and 42 percent, respectively. The results suggest that Nutraz Xyla influences the intestinal microbial profile through a combination of easily fermented AX fragments with a general change in digestive composition as a substrate for intestinal microbiology.
Promoting good bowel health and feed intake can help to achieve better eggshell quality. Due to the lower pH resulting from the improved production of SCFA, bioavailability of minerals can be expected to increase. At the same time, increased production of butyrate may increase the absorption capacity of the intestinal mucosa.
TRIAL RESULTS
Various studies have been conducted in cooperation with many research institutes to examine the 'side' effect of xylanases on egg quality. The results of these studies are summarized in Table-2. In the first, a significant increase (92.4% vs. 95.3%) was observed in the bacterial endo-xylanase group for chickens compared to the negative control group. FCR showed a 5.1 percent improvement in the enzyme group versus the negative control group. Besides the effect on performance, a significant enzyme effect was observed on the eggshell. The frequency of broken or cracked eggs fell from 2.33 percent to 1.63 percent.
The aim of the second trial was to evaluate whether NSP enzymes from different origins had similar effects on commercial egg performance and eggshell parameters. Nutrients supplemented with laying diets, mushroom cocktail enzyme (FX) or Nutraz Xyla did not have a significant effect on performance. However, the spawning rate, egg weight and daily egg mass were numerically higher for Nutraz Xyla-fortified chickens compared to FX-fortified chickens.
Eggs of chickens fed with Nutraz Xyla had significantly thicker shells, and broken shells were less than FX-fed chickens. The third study was conducted to evaluate the effect of Nutraz Xyla on performance and shell quality in aged chickens (54 to 74 weeks old). Feed supplementation with Nutraz Xyla significantly improved the percentage of ovulation (83.9 percent to 87.9 percent) and egg mass (58.3 g to 55.3 g), resulting in a feed conversion rate (1.974 to 2.085). significantly.
While the broken and dirty egg event was reasonable and comparable between the evaluation groups, the soft shell egg was significantly lower for the Nutraz Xyla group (0.04 percent to 0.47 percent). Furthermore, a significantly higher Haugh unit (HU) value was noticed for chickens fed diets supplemented with Nutraz Xyla (90.14 to 87.60). The addition of a bacterial endo-1,4-b-xylanase resulted in more efficient egg production and higher HU compared to the negative control diet (Delezie et al., 2015).
RESULTS
Based on these results, we concluded that Nutraz Xyla did not reduce the nutritional effects of starch-free polysaccharides, but also contributed to the viable formation of prebiotic AXOS fermented in the pouch to produce high butyrate levels. The benefits of butyrate in terms of egg quality are widely accepted; therefore, if Nutraz Xyla's use can reduce or change the addition of butyrate, feed prices will fall significantly while maintaining positive effects. Since eggshell quality has a significant impact on the profitability of spawning farms, enzyme selection should be made not only by considering the effects on energy boost and performance, but also on egg quality. For many years, Nutrex has been working extensively on researching detailed action and unique features of Nutraz Xyla to demonstrate its ability to improve production performance and bowel health in all types of dietary and production systems.
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