Nutrient Absorption:
The root of a sustainable feed industry By Dr. Ing. Matias Jansen, Kemin Animal Nutrition and Health EMENA, Product Manager
Introduction With rising demands for animal protein production and continuous challenges in availability and composition of feed raw materials, the need for advancements in sustainable animal protein production rapidly increases. To answer this need, the focus on nutrient absorption as the root for sustainable animal protein production will be instrumental. Considering the three key aspects of sustainable production,
Economic sustainability, Ecological sustainability and Social sustainability, nutrient absorption has a direct impact on two of these. From an ecological point of view, it is clear that nutrients that are not absorbed by the animal are excreted and thus lose their nutritional value as dietary components. From an economical point of view, nutrients that are not absorbed do not contribute to animal growth and have a direct impact on feed performance and thus economic performance. Lysophospholipid-based absorption enhancers, such as LYSOFORTE®
EXTEND, increase nutrient digestibility and absorption
and are therefore important tools for the feed industry to continue the efforts for improved sustainable animal production.
Broiler study The impact of an absorption enhancer on the absorption of nutrients and bird performance was evaluated in a broiler study. A total of 408
Starter
Ingredients Wheat
Soybean meal (47% CP) Corn
Soybean oil Palm oil
Limestone Wheat bran Other
Calculated nutrient content Crude protein AMEn (kcal/kg)
407.3 300 200 27 8
13.8 0
43.9
224.8 3,012
Basal diet Grower
420.7 300
197.7 30 15
13.6 0
23 211 3,053
day-old male Ross 308 broilers were fed either a basal diet fulfilling all dietary requirements (positive control, Table 1), a basal diet with lower metabolisable energy (negative control) or a basal diet with lower metabolisable energy with 500 ppm of a mixture of lysolecithin, monoglycerides and synthetic emulsifier; the product, LYSOFORTE EXTEND dry, produced by Kemin Europa.
Performance At the end of the starter period (14 d), average body weight and daily gain were significantly higher (18 g/bird and 1.2 g/bird/day, respectively) in birds fed the diet with the absorption enhancer than in those fed the negative control diet (Table 2). Over the whole rearing period (0 – 42 d), the highest average
body weight and average daily gain were observed for birds fed the diet with the absorption enhancer. Additionally, during the starter period, the FCR was significantly lower (- 15 points) in birds fed the diet with the absorption enhancer than in birds fed the negative control diet. Similarly, the FCR over the whole rearing period was reduced by 3 points with the addition of the mixture. Therefore, due to a better nutrient utilization, birds fed a diet supplemented with the mixture were able to compensate for an energy gap of 74 kcal/kg up to 94 kcal/kg.
Table 1. Ingredients and nutrient composition of the experimental diets. Item (g/kg, unless noted)
Finisher
405.2 260 250 34
16.5 12.9 0
21.4
193.9 3,131
Starter
425.3 296 200 15.5 5.5
13.8 0
43.9
224.9 2,938
Basal diet with reduced energy Grower
420.7 300
197.7 22
11.5 13.6 11.5 23
212.8 2,973
Finisher
405.2 260 250 24 13
12.9 13.5 21.4
196.1 3,036
Table 2. Growth performance of broilers fed a basal diet (Positive control), a basal diet with lower energy (negative control) or a basal diet with reduced energy and 500 ppm absorption enhancer*
Treatment
Positive control Negative control
Absorption enhancer*
Avergage body weight (g/bird) 14 days 403a 373b 391a
42 days 2848 2800 2856
Average daily gain (g/bird/day) 0-14 days 25.6a 23.5b 24.7a
0-42 days 66.8 65.6 66.9
a-b Values within columns with different superscripts are significantly different (P<0.05) *LYSOFORTE EXTEND dry, Kemin Europa NV
PAGE 30 NOVEMBER/DECEMBER 2019 FEED COMPOUNDER Feed conversion Ratio
0-14 days 1.52a 1.65b 1.50a
0-42 days 1.64 1.66 1.63
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