Research Advance on Application of Microbial Fermented Fodder in Broilers Production: A Short Review

Abstract

Recently, interest in animal production and poultry production in particular has increased, because poultry meat and eggs and their products are more widely consumed than other products. Human health is also considered one of the priorities. Nowadays, the fermentation industry has become very popular due to its great benefits in the pharmaceutical industry, the improvement of foodstuffs and the animal feed industry and its improvement. Moreover, microbial fermentation can enhance the content and digestibility of nutrients in nontraditional diets while decreasing the quantity of crude fiber and anti-nutritional elements such as tannins. The functional components (organic acids, bioactive peptides, lactic acid bacteria) found in microbial fermented feed can increase meat production in cattle, pigs, and sheep, and broiler productivity, carcass quality, intestinal health, immunological function, and so on. This paper examines the application study of microbial fermented feed in broiler production and serves as a resource for microbial fermented feed promotion and use in broiler production.

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Chang, Y. , Saeed Omer, S. , Li, G. , Lian, H. and Liu, Y. (2022) Research Advance on Application of Microbial Fermented Fodder in Broilers Production: A Short Review. Open Journal of Animal Sciences, 12, 200-209. doi: 10.4236/ojas.2022.122015.

1. Introduction

Microbial fermentation has the potential to increase crude protein content in feed while decreasing crude fiber, anti-nutritional factor (ANF), and toxic and hazardous substances [1] [2] [3]. A large number of lactic acid bacteria and organic acids contained in microbial fermentation feeds [4] can protect feeds from contamination by pathogenic microorganisms [5]. Besides, the use of fermented feed in feeding broilers, it is also widely used in the production of pigs and ruminants [6] [7]. Moreover, feeding microbial fermented feed can protect the intestinal health of broilers [7] and promote the growth of broilers as well as increase relative weight, villi, and the length of the small intestine [8] [9] [10]. This review of the progress in research of the use of microbial fermented feed in the production of broilers, the application research progress of fermented feed in broiler production is expected to provide a reference for the promotion and application of microbial fermented feed in broiler production [11].

2. Features of Fermented Feed

Fermentation has the potential to improve the microbial composition and nutritional properties of feed [1] [12] [13] [14]. Researchers reported that the organic acid content of fermented corn seeds increased, the pH value dropped from 5.5 to 4.2, the number of lactose-negative enterobacteria, yeasts, and molds decreased significantly, and lactic acid bacteria increased [5] [15] [16]. Table 1 shows the pH value, microorganism and organic acid composition of non-fermented feed, fermented dry feed, and fermented liquid feed. Feed can protect the gastrointestinal function and health of broilers [1] [3] [17]. In a study, it was proven that unsoaked corn seeds reduce mycotoxins during the fermentation process [18]. On the other hand, researchers reported that zearalenone was reduced under solid-state fermentation conditions [19]. Some studies have shown that the microorganisms involved in fermentation play a key role in the degradation or conversion of mycotoxins into non-toxic compounds. Feed metabolites such as organic acids and bacteriocins, can inhibit the growth of bacteria, molds, and fungi during feed storage, thereby prolonging the shelf life of feeds [20] [21]. Acetic acid and biogenic amines (cadaverine, putrescine, histamine) contained in the fermented feed will affect the palatability of the feed [14]. Studies have shown

Table 1. The pH value, microorganism and organic acid composition of non-fermented feed, fermented dry feed and fermented liquid feed.

Note: NM means not determined.

that fermentation can damage certain nutrients in the feed, such as the degradation of free lysine, which will have a negative impact on animal performance [22]. However, improving fermentation conditions (adding organic acids, lactic acid bacteria, enzymes) can speed up the fermentation process and improve the nutritional value and palatability of the final fermented product [14]. Generally, the single feed material is subjected to microbial fermentation [23].

3. Application of Microbial Fermented Feed in Broiler Production

3.1. The Effect of Microbial Fermented Feed on Broiler Performance

Feeds such as wheat, soybeans, barley, and rapeseed meal contain large amounts of non-starch polysaccharides (NSP), but poultry lack endogenous NSP hydrolase. The soluble NSP in the feed will increase the digestive viscosity of the small intestine of broilers and reduce the digestibility of nutrients [24]. 18.7% - 23.5% of NSP in rapeseed meal, adding complex enzymes (glucanase, xylanase and pectinase) when fermenting rapeseed meal can reduce the total amount of NSP by 31% - 42% [25]. Researchers conducted an experiment to study the effects of replacing soybean meal with fermented soybean with Aspergillus oryzae on digestive enzyme activity of broiler chickens in a 45-day diet. The results showed that the fermented soybean meal increased the activity of protazo enzymes trypsin and lipase in the intestines of broilers [26]. On the other hand, with the same period month and a half, the effect of wet and fermented feed on the intestinal tissue and the shape of 360 chicks was also studied for the purpose of fattening while providing all the necessary needs. The results were showen that the feeds that contain fermented feed had a positive effect [27] [28].

Researchers have confirmed that feeding fermented small or barley can significantly increase the weight gain and slaughter rate of 42-day broilers [29]. Furthermore, some research has shown that adding 1% Lactobacillus, Bacillus fermented barley, or wheat to the Ross 308 broiler diet can significantly improve broiler growth performance [30]. On the other hand, researchers found that replacing 0%, 5%, 10%, and 15% of soybean meal in the AA broiler diet with fermented rapeseed meal n growth performance, serum biochemistry variable and intestinal morphology of broilers. The results showed that the body weight gain was less for birds fed fermented feed by 15% [31]. However, it has been proven that adding 5% lactobacillus, Bacillus natto, Aspergillus niger solid-state fermented corn gluten meal to the diet of yellow feather broilers can significantly increase the daily feed intake and daily gain of broilers and reduce the feed-to-weight ratio [32]. Besides the partial substitution of soybean meal in the fermented feed industry [33], Aljubori et al. found that in the 0 - 28 d Cobb 500 broiler diet, 10% Lactobacillus salivarius solid-fermented rapeseed meal was used to replace soybean meal in the same amount, and 30% fermented rapeseed was used in the 29 - 35 d diet [34].

Aljubori et al. found that in the 0 - 28 d Cobb 500 broiler diet, 10% Lactobacillus salivarius solid-fermented rapeseed meal was used to replace soybean meal in the same amount, and 30% fermented rapeseed was used in the 29 - 35 d diet. The same amount of meal instead of soybean meal does not affect the daily gain and feed-to-weight ratio of broilers [34]. Shayerizadeha et al. found that using Lactobacillus acidophilus, Bacillus subtilis, and Aspergillus niger solid-state fermented rapeseed meal instead of 50% soybean meal in the Cobb 500 broiler diet can significantly improve the daily gain and feed-to-weight ratio of broilers [35] [36]. Furthermore, replacing corn with 5% - 15% fermented banana peel in the diet of Roman broilers had no effect on the growth performance of the broilers [37]. Microbial fermentation improves feed nutritional indicators as well as feed palatability [38]. Microbial fermentation improves feed nutritional indicators as well as feed palatability [38]. Fermented feed improves the digestion and absorption of nutrients by increasing the villus height of the duodenum and jejunum of broilers and the ratio of villus height to crypt depth (VH:CD) [6] [39] [40]. Fermented feed could improve the environment of the gastrointestinal tract of broilers, such as lowering the pH value, the activity of pathogenic microorganisms, and increasing the production of short-chain fatty acids [41].

3.2. Effect of Microbial Fermented Feed on Slaughter Performance and Meat Quality of Broilers

Regarding the performance and quality of broiler meat, a study has shown that replacing ordinary soybean meal with 7% fermented soybean meal in the diet of yellow-feather broilers can significantly improve broiler half-cleansing. Also increases the rate of full evisceration, pectoral muscle rate, and leg muscle rate, reducing the abdominal fat rate of broilers [28] [33]. Moreover, it was found that using 6% Candida tropicalis and Saccharomyces cerevisiae fermented cotton meal in the diet of yellow feather broilers to replace ordinary cotton meal can significantly reduce the abdominal fat rate of yellow feather broilers [42]. Niu et al. [43] found that using the equivalent amount of 6% Candida tropicalis fermented cotton meal in the diet of Cobb broilers instead of soybean meal can significantly reduce the belly fat content and subcutaneous fat thickness of broilers. Researchers reported that replacing soybean meal with 4%, 8%, and 12% fermented cotton meal in the diet of yellow feather broilers showed that the birds fed 8% solid-state fermented cottonseed meal had increased (p 0.05) serum immunoglobin M, immunoglobulin G, and complement C4 levels on day 42 compared with birds fed a control diet [44].

The use of some fermented seed powders in the diet of broilers can lead to an improvement in the broiler’s chest muscles and an increase in the height of the villus [31]. Shayerizadeha et al. reported that using fermented rapeseed meal instead of 50% soybean meal in the Cobb 500 broiler diet can significantly reduce the content of cholesterol, malondialdehyde, and total saturated fatty acids in the leg muscles of broilers, and increase the content of total polyunsaturated fatty acids [36]. Furthermore, feeding 10% fermented corn meal has been shown to increase the proportion of -linolenic acid, -linolenic acid, and oleic acid in broiler breast fat [45]. It could be said that feeding wet fermented feed has no effect on the slaughter rate of broiler chickens, and will lower the breast meat rate of broiler chickens, which may be related to the characteristics of fermented feed ingredients and the different dosage ratios [6].

3.3. The Impact of Microbial Fermented Feed on the Intestinal Microecology of Broilers

The intestinal microflora will participate in the host’s immune defense mechanism against pathogens [46]. Adding microbial fermented feed to broiler diets can increase the number of beneficial bacteria in the intestines and reduce the number of harmful bacteria. For example, feeding broilers with fermented complete feed can significantly reduce the number of E. coli in the jejunum of broilers and increase the number of lactic acid bacteria [47]. Furthermore, adding fermented cotton meal to the diet can significantly increase the number of lactobacilli in the cecum of broilers and reduce the number of coliforms [7]. To enhance that, it has been investigated to feed fermented corn-soybean meal diets to green-footed hemp chickens for 31 - 73 days and found that the number of Escherichia coli and Staphylococcus aureus in the ileum of broiler chickens decreased significantly, the number of lactobacilli increased significantly, and the pH value of the ileum gradually decreased [27]. In addition, added 15% Bacillus polymyxa fermented palm meal to the broiler diet and found that the number of lactic acid bacteria in the intestinal tract of broiler chickens increased significantly and the total number of bacteria decreased [48]. According to some studies, using fermented rapeseed meal instead of 50% soybean meal in the Cobb 500 broiler diet can significantly increase the intestinal lactic acid content and number of lactic acid bacteria in broiler chickens, reduce Salmonella colonization, and reduce the number of E. coli in the ileum [36]. On the other hand, adding 10% solid-state fermented corn gluten meal to the diet of yellow feather broilers found that the number of intestinal Escherichia coli in broilers was significantly reduced, and the number of lactobacilli was significantly increased [36], and in the Roman broiler diet, 5% - 15% fermented banana peel was used to replace corn, and it was found that the number of coliforms in the ileum of broiler chickens had a downward trend [37]. However, used fermented barley or wheat to test it. It was found that it had no effect on the number of E. coli in the broiler’s intestines [30]. The increase in acid is linked to the quality of the feed. It was found that the addition of it was found that adding 4% fermented feed to the diet of Emei black chickens can increase the concentration of acetic acid and propionic acid in the cecum of broilers [40].

3.4. The Effect of Microbial Fermented Feed on the Morphology of Broiler’s Intestines

Intestinal mucosa can reduce the harm of harmful substances and pathogenic microorganisms to the body [49]. In a study, it was shown that the use of fermented soybean meal in broiler diets can significantly increase the height of the duodenum and jejunum villi of broilers, and reduce the crypt depth of the jejunal mucosa [26]. In a study, it was reported that adding fermented rapeseed meal to broiler diets can significantly increase the ratio of jejunum villus height to crypt depth in broiler chickens [50]. On the other hand, they also found that adding fermented rapeseed meal to broiler diets can significantly increase the height of ileum and jejunum villi and the VH:CD value of broilers [51]. Low toxin and low antigenic substances, small peptides [51], and low ANF will have a positive effect on the improvement of broiler intestinal mucosal morphology [26].

3.5. The Effect of Microbial Fermented Feed on the Immune Function of Broilers

Feeding fermented rapeseed meal can significantly increase serum immunoglobulin IgG and immune protein IgM levels in broilers [51]. Furthermore, feeding fermented feed can significantly increase broiler duodenal secretory IgA (S IgA) content [40]. Soybean meal and corn gluten meal have been used in yellow-feather broiler diets where it was found that broiler spleens. The index thymus index increased significantly [26] [32]. Fermented feed can induce recirculating antibodies and improve the intestinal mucosal immunity of broilers [52], resulting in a decrease in the ratio of heterophile cells to lymphocytes in broilers [30] and alleviating oxidative stress [53]. Small peptides in fermented feed can make broiler immune globules. The protein content is increased to improve the immune function of broilers [51]. Changes in the intestinal flora of broilers will also affect the immune response of broilers [6]. Feeding microbial fermented feed usually increases the number of lactic acid bacteria in the intestines of broilers, which is beneficial to the immune function of broilers. However, lactic acid bacteria can induce the production of Th2 cytokines such as interleukin-4 (IL-4) and IL-10, thereby promoting the development of B cells and the production of antibodies [54].

4. Conclusion

Microbial fermented feed has the characteristics of low pH, high lactic acid bacteria, and high lactic acid content, and plays an important role in improving the broiler’s intestinal health, regulating immune function, and improving production performance. Due to the differences in the amount and moisture content of fermented raw materials, fermented bacteria, and nutrient components of the fermented feed, the research results are different. Making full use of unconventional feed resources in various parts of the world to produce fermented feed materials can reduce feed costs and increase meat chicken production efficiency. In the future, we can carry out in-depth research on the selection of strains, fermentation technology, product nutritional parameters, and appropriate dosages in diets for different broiler breeds, different growth stages, and cost performance based on different types of unconventional feed materials, so as to provide fermented feeds with no resistance. Reasonable utilization in broiler breeding provides reference.

Conflicts of Interest

The authors declare no conflicts of interest regarding the publication of this paper.

References

[1] Khempaka, S., Thongkratok, R., Okrathok, S., et al. (2014) An Evaluation of Cassava Pulp Feedstuff Fermented with A. oryzae, on Growth Performance, Nutrient Digestibility and Carcass Quality of Broilers. Journal of Poultry Science, 51, 71-79.
[2] Sugiharto, S., Yudiarti, T. and Isroli, I. (2015) Functional Properties of Filamentous Fungi Isolated from the Indonesian Fermented Dried Cassava with Particular Application on Poultry. Mycobiology, 43, 415-422.
https://doi.org/10.5941/MYCO.2015.43.4.415
[3] Sugiharto, S., Yudiarti, T. and Isroli, I. (2016) Haematological and Biochemical Parameters of Broilers Fed Cassava Pulp Fermented with Filamentous Fungi Isolated from the Indonesian Fermented Dried Cassava. Livestock Research for Rural Development, 28, Article No. 53.
[4] Engberg, R.M., Hammershøj, M., Johansen, N.F., et al. (2009) Fermented Feed for Laying Hens: Effects on Egg Production, Egg Quality, Plumage Condition and Composition and Activity of the Intestinal Microflora. British Poultry Science, 50, 228-239.
https://doi.org/10.1080/00071660902736722
[5] Niba, A.T., Beal, J.D., Kudi, A.C., et al. (2009) Potential of Bacterial Fermentation as a Biosafe Method of Improving Feeds for Pigs and Poultry. African Journal of Biotechnology, 8, 1758-1767.
[6] Missotten, J.A., Michiels, J., Dierick, N.L., et al. (2013) Effect of Fermented Moist Feed on Performance, Gut Bacteria and Gut Histo-Morphology in Broilers. British Poultry Science, 54, 627-634.
https://doi.org/10.1080/00071668.2013.811718
[7] Sun, H., Tang, J.W., Fang, C.L., et al. (2013) Molecular Analysis of Intestinal Bacterial Microbiota of Broiler Chickens Fed Diets Containing Fermented Cottonseed Meal. Journal of Poultry Science, 92, 392-401.
[8] Xie, P.J., Huang, L.X., Zhang, C.H., et al. (2016) Nutrient Assessment of Olive Leaf Residues Processed by Solid-State Fermentation as an Innovative Feedstuff Additive. Journal of Applied Microbiology, 121, 28-40.
[9] Sun, Z., et al. (2014) Application of Protein Feed Processed by Microbial Fermentation to Dairy Cow. Journal of Northeast Agricultural University (English Edition), 21, 39-44.
[10] Urlings, H.A.P., et al. (1993) Microbial and Nutritional Aspects of Feeding Fermented Feed (Poultry By-Products) to Pigs. Veterinary Quarterly, 15, 146-151.
https://doi.org/10.1080/01652176.1993.9694394
[11] Wang, Z., Yu, Y.N., Li, X.Y., et al. (2021) Fermented Soybean Meal Replacement in the Diet of Lactating Holstein Dairy Cows: Modulated Rumen Fermentation and Ruminal Microflora. Frontiers in Microbiology, 12, Article ID: 625857.
https://doi.org/10.3389/fmicb.2021.625857
[12] Xu, B.C., Zhu, L.Y., Fu, J., Li, Z., Wang, Y.Z. and Jin, M.L. (2019) Overall Assessment of Fermented Feed for Pigs: A Series of Meta-Analyses. Journal of Animal Science, 97, 4810-4821.
https://doi.org/10.1093/jas/skz350
[13] Xu, B.C., et al. (2020) Effects of Fermented Feed Supplementation on Pig Growth Performance: A Meta-Analysis. Animal Feed Science and Technology, 259, Article ID: 114315.
https://doi.org/10.1016/j.anifeedsci.2019.114315
[14] Canibe, N. and Jensen, B.B. (2012) Fermented Liquid Feed—Microbial and Nutritional Aspects and Impact on Enteric Diseases in Pigs. Animal Feed Science and Technology, 173, 17-40.
https://doi.org/10.1016/j.anifeedsci.2011.12.021
[15] Ranjitkar, S., et al. (2016) Bacterial Succession in the Broiler Gastrointestinal Tract. Applied and Environmental Microbiology, 82, 2399-2410.
https://doi.org/10.1128/AEM.02549-15
[16] Canibe, N., et al. (2007) Effect of Feeding Fermented Liquid Feed and Fermented Grain on Gastrointestinal Ecology and Growth Performance in Piglets. Journal of Animal Science, 85, 2959-2971.
https://doi.org/10.2527/jas.2006-744
[17] Sugiharto, S., Yudiarti, T. and Isroli, I. (2016) Performances and Haematological Profile of Broilers Fed Fermented Dried Cassava (Manihot esculenta Crantz). Tropical Animal Health and Production, 48, 1337-1341.
https://doi.org/10.1007/s11250-016-1098-2
[18] Okeke, C.A., et al. (2015) Bacterial Diversity and Mycotoxin Reduction during Maize Fermentation (Steeping) for Ogi Production. Frontiers in Microbiology, 6, Article No. 1402.
https://doi.org/10.3389/fmicb.2015.01402
[19] Yang, L.J., et al. (2018) Conventional Solid Fermentation Alters Mycotoxin Contents and Microbial Diversity Analyzed by High-Throughput Sequencing of a Fusarium mycotoxin-Contaminated Diet. Canadian Journal of Animal Science, 98, 354-361.
https://doi.org/10.1139/cjas-2017-0093
[20] Borresen, E.C., Henderson, A.J., Kumar, A., Weir, T.L. and Ryan, E.P. (2012) Fermented Foods: Patented Approaches and Formulations for Nutritional Supplementation and Health Promotion. Recent Patents on Food, Nutrition & Agriculture, 4, 134-140.
https://doi.org/10.2174/2212798411204020134
[21] Londero, A., et al. (2014) Fermented Whey as Poultry Feed Additive to Prevent Fungal Contamination. Journal of the Science of Food and Agriculture, 94, 3189-3194.
[22] Canibe, N., and Jensen, B.B. (2003) Fermented and Nonfermented Liquid Feed to Growing Pigs: Effect on Aspects of Gastrointestinal Ecology and Growth Performance. Journal of Animal Science, 81, 2019-2031.
https://doi.org/10.2527/2003.8182019x
[23] Sugiharto, S., Lauridsen, C. and Jensen, B.B. (2015) Gastrointestinal Ecosystem and Immunological Responses in E. coli Challenged Pigs after Weaning Fed Liquid Diets Containing Whey Permeate Fermented with Different Lactic Acid Bacteria. Animal Feed Science and Technology, 207, 278-282.
https://doi.org/10.1016/j.anifeedsci.2015.06.019
[24] Choct, M. (1997) Feed Non-Starch Polysaccharides: Chemical Structures and Nutritional Significance. Feed Milling International, 191, 13-26.
[25] Jakobsen, G.V., Jensen, B.B., Knudsen, K.E.B. and Canibe, N. (2015) Improving the Nutritional Value of Rapeseed Cake and Wheat Dried Distillers Grains with Solubles by Addition of Enzymes during Liquid Fermentation. Animal Feed Science and Technology, 208, 198-213.
https://doi.org/10.1016/j.anifeedsci.2015.07.015
[26] Feng, J., Liu, X., Xu, Z.R., Wang, Y.Z. and Liu, J.X. (2007) Effects of Fermented Soybean Meal on Digestive Enzyme Activities and Intestinal Morphology in Broilers. Poultry Science, 86, 1149-1154.
https://doi.org/10.1093/ps/86.6.1149
[27] Naji, S.A., et al. (2016) The Effects of Fermented Feed on Broiler Production and Intestinal Morphology. Pertanika Journal of Tropical Agricultural Science, 39, 597-607.
[28] Boroojeni, F.G., Senz, M., Kozłowski, K., et al. (2017) The Effects of Fermentation and Enzymatic Treatment of Pea on Nutrient Digestibility and Growth Performance of Broilers. Animal, 11, 1698-1707.
https://doi.org/10.1017/S1751731117000787
[29] Yaşar, S., Gök, M.S. and Gürbüz, Y. (2016) Performance of Broilers Fed Raw or Fermented and Redried Wheat, Barley, and Oat Grains. Turkish Journal of Veterinary and Animal Sciences, 40, 313-322.
[30] Kim, C.H. and Kang, H.K. (2016) Effects of Fermented Barley or Wheat as Feed Supplement on Growth Performance, Gut Health and Meat Quality of Broilers. European Poultry Science, 80.
[31] Xu, F.Z., Zeng, X.G. and Ding, X.L. (2012) Effects of Replacing Soybean Meal with Fermented Rapeseed Meal on Performance, Serum Biochemical Variables and Intestinal Morphology of Broilers. Asian-Australasian Journal of Animal Sciences, 25, 1734-1741.
https://doi.org/10.5713/ajas.2012.12249
[32] Yan, W., Liu, X., Long, J., et al. (2018) Effects of Fermented Corn Gluten Meal on Growth Performance, Serum Parameters, Intestinal Morphology and Immunity Performance of Three-Yellow Broilers. Canadian Journal of Animal Science, 99, 408-417.
https://doi.org/10.1139/cjas-2017-0007
[33] Guo, S.S., Zhang, Y.K., Cheng, Q., et al. (2020) Partial Substitution of Fermented Soybean Meal for Soybean Meal Influences the Carcass Traits and Meat Quality of Broiler Chickens. Animals, 10, Article No. 225.
https://doi.org/10.3390/ani10020225
[34] Aljubori, A., Idrus, Z., Soleimani, A.F., Abdullah, N. and Boo, L.J.. (2017) Response of Broiler Chickens to Dietary Inclusion of Fermented Canola Meal under Heat Stress Condition. Italian Journal of Animal Science, 16, 546-551.
https://doi.org/10.1080/1828051X.2017.1292830
[35] Shayerizadeha, A.A., Dastara, B., Shargh, M.S., et al. (2017) Fermented Rapeseed Meal Is Effective in Controlling Salmonella enterica Serovar Typhimurium Infection and Improving Growth Performance in Broiler Chicks. Veterinary Microbiology, 201, 93-102.
https://doi.org/10.1016/j.vetmic.2017.01.007
[36] Shayerizadeha, A.A., Dastara, B., Shargh, M.S., et al. (2018) Effects of Feeding Fermented Rapeseed Meal on Growth Performance, Gastrointestinal Microflora Population, Blood Metabolites, Meat Quality and Lipid Metabolism in Broiler Chickens. Livestock Science, 216, 183-190.
https://doi.org/10.1016/j.livsci.2018.08.012
[37] Sugiharto, S., Yudiarti, T., Isroli, I., et al. (2020) Growth Performance, Haematological Responses, Intestinal Microbiology and Carcass Traits of Broiler Chickens Fed Finisher Diets Containing Two-Stage Fermented Banana Peel Meal. Tropical Animal Health and Production, 52, 1425-1433.
https://doi.org/10.1007/s11250-019-02147-y
[38] Supriyati, H.T., Susanti, T. and Susana, I.W.R. (2015) Nutritional Value of Rice Bran Fermented by Bacillus amyloliquefaciens and Humic Substances and Its Utilization as a Feed Ingredient for Broiler Chickens. Asian-Australasian Journal of Animal Sciences, 28, 231-238.
https://doi.org/10.5713/ajas.14.0039
[39] Sun, H., Tang, J.W., Yao, X.H., et al. (2013) Effects of Dietary Inclusion of Fermented Cottonseed Meal on Growth, Cecal Microbial Population, Small Intestinal Morphology and Digestive Enzyme Activity of Broilers. Tropical Animal Health and Production, 45, 987-993.
https://doi.org/10.1007/s11250-012-0322-y
[40] Zhang, J., Zhu, J., Sun, J., et al. (2016) Effect of Fermented Feed on Intestinal Morphology, Immune Status, Carcass and Growth Performance of Emei Black Chickens. FASEB Journal, 30, lb240.
[41] Mathivanan, R., Selvaraj, P. and Nanjappan, K. (2006) Feeding of Fermented Soybean Meal on Broiler Performance. International Journal of Poultry Sciences, 5, 868-872.
https://doi.org/10.3923/ijps.2006.868.872
[42] Nie, C.X., Zhang, W.J., Ge, W.X., Wang, Y.Q. and Liu, J.C. (2015) Effect of Cottonseed Meal Fermented with Yeast on the Lipid-Related Gene Expression in Broiler Chickens. Brazilian Journal of Microbiology, 17, 57-64.
https://doi.org/10.1590/1516-635XSPECIALISSUENutrition-PoultryFeedingAdditives057-064
[43] Niu, J.L., Zhang, J., Wei, L.Q., et al. (2019) Effect of Fermented Cottonseed Meal on the Lipid-Related Indices and Serum Metabolic Profiles in Broiler Chickens. Animals, 9, Article No. 930.
https://doi.org/10.3390/ani9110930
[44] Tang, J.W., Sun, H., Yao, X.H., Wu, Y.F., Wang, X. and Feng, J. (2012) Effects of Replacement of Soybean Meal by Fermented Cottonseed Meal on Growth Performance, Serum Biochemical Parameters and Immune Function of Yellow-Feathered Broilers. Asian-Australasian Journal of Animal Sciences, 25, 393-400.
https://doi.org/10.5713/ajas.2011.11381
[45] Marcincak, S., Klempova, T., Bartkovsky, M., et al. (2018) Effect of Fungal Solid-State Fermented Product in Broiler Chicken Nutrition on Quality and Safety of Produced Breast Meat. BioMed Research International, 2018, Article ID: 2609548.
https://doi.org/10.1155/2018/2609548
[46] Schlegel, M. (1996) Ecology and Evolution in Anoxic Worlds. Trends in Ecology & Evolution, 11, 38-39.
https://doi.org/10.1016/0169-5347(96)81069-X
[47] Liang, R., Li, Z., Xu, G., et al. (2012) Effects of Fermentation Feed on Layer Chicks Growth Performance and Physiological Indexes. Feed Review, 4, 5-8.
[48] Alshelmani, M.I., Loh, T.C., Foo, H.L., et al. (2016) Effect of Feeding Different Levels of Palm Kernel Cake Fermented by Paenibacillus polymyxa ATCC 842 on Nutrient Digestibility, Intestinal Morphology and Gut Microflora in Broiler Chickens. Animal Feed Science and Technology, 216, 216-224.
https://doi.org/10.1016/j.anifeedsci.2016.03.019
[49] Sugiharto, S., Jensen, B.B., Jensen, K.H., et al. (2015) Prevention of Enterotoxigenic Escherichia coli. Infections in Pigs by Dairy-Based Nutrition. CAB Review, 10, 16 p.
[50] Chiang, G., et al. (2009) Effects of Feeding Solid-State Fermented Rapeseed Meal on Performance, Nutrient Digestibility, Intestinal Ecology and Intestinal Morphology of Broiler Chickens. Asian-Australasian Journal of Animal Sciences, 23, 263-271.
https://doi.org/10.5713/ajas.2010.90145
[51] Xu, F.Z., et al. (2012) Effects of Fermented Soybean Meal on Performance, Serum Biochemical Parameters and Intestinal Morphology of Laying Hens. Journal of Animal and Veterinary Advances, 11, 81-86.
[52] Gao, J., Zhang, H.J., Wu, S.G., et al. (2009) Effect of Saccharomyces cerevisiae Fermentation Product on Immune Functions of Broilers Challenged with Eimeria tenella. Poultry Science, 88, 2141-2151.
https://doi.org/10.3382/ps.2009-00151
[53] Sugiharto, S., Yudiarti, T., Isroli, I., et al. (2016) Dietary Supplementation of Probiotics in Poultry Exposed to Heat Stress—A Review. Annals of Animal Science, 17, 591-604.
https://doi.org/10.1515/aoas-2016-0062
[54] Kabir, S.M.L. (2009) The Role of Probiotics in the Poultry Industry. International Journal of Molecular Sciences, 10, 3531-3546.
https://doi.org/10.3390/ijms10083531

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