| Peer-Reviewed

Importance of Yeast in Ruminants Feeding on Production and Reproduction

Received: 12 August 2017     Accepted: 26 August 2017     Published: 21 September 2017
Views:       Downloads:
Abstract

Benefits of yeast supplements for ruminants are shifts in microbial population numbers and species, favorable changes in volatile fatty acids contents of rumen, positive effects on rumen ammonia disappearance, positive effects on rumen pH, promotes metabolism digestion, increase in fiber digestibility and changes in microbial protein and amino acids in large intestine. In addition, benefits of Yeast supplements for ruminants are improving the overall intestinal bacteria balance, reducing digestive problems, lower risk of acidosis and reduction in the humidity of bedding resulting in lower stress levels. Feeding on feed mixture contained Active dry yeast (ADY) improved the appetite of animals which lead to increase the feed intake and consequently increased the daily weight gain of the treated animals. From the physiological point of view, adding ADY caused significant increase the levels of both T4 and T3 hormones which lead to increase the protein and fat biosyntheses. Moreover, benefits of yeast supplements for ruminants are increased milk production and improvements in milk quality, improves milk selenium content, reduced mastitis and somatic cell count, less stillbirths, weak neonates, improves fertility, reduced incidence of retained placenta, improved immune response, increases immune resistance, high content in B-vitamins and trace elements, enhances weight gain and feed utilization.

Published in Ecology and Evolutionary Biology (Volume 2, Issue 4)
DOI 10.11648/j.eeb.20170204.11
Page(s) 49-58
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Yeast, Digestibility, Growth, Milk Production, Reproductive Efficiency, Blood Components

References
[1] Rifat UK, Shabana N, Kuldeep D, Karthik K, Ruchi T, Mutassim MA Ibrahim AA and Arshad Z (2016). Review Article Direct-Fed Microbial: Beneficial Applications, Modes of Action and Prospects as a Safe Tool for Enhancing Ruminant Production and Safeguarding Health. Int. J. Pharmacol., 12 (3): 220-231.
[2] Robinson, P. H. (2010). Yeast Products for Growing and Lactating Ruminants: A Literature Summary of Impacts on Rumen Fermentation and Performance. Cooperative Extension Specialist Department of Animal Science, University of California, Davis, CA 95616.
[3] Thrune, M.; Bach, A.; Ruiz-Moreno, M.; Stern, M.; Linn, J. (2009). Effects of saccharomyces cerevisiae on ruminal PH and microbial fermentation in dairy cows: Yeast supplementation on rumen fermentation. Livest. Sci., 124, 261–265.
[4] Montes de Oca, R., Salem, AZM; Kholif, AE, Fernandez, P; Zamora, JL; Monroy, H; Pérez, LS; Acosta, J. (2016). Mode of action of yeast in animal nutrition, Chapter 3, In book: Yeast additive and animal production, Editors: AZM Salem, AE Kholif and AK Puniya, Publisher: Pub Bio Med, Central Research Publishing Services, India, pp. 14-20
[5] Habeeb, AAM; Saleh HM; EL-Tarabany AA. (2017). Effect of yeast on Ruminal function of farm animals a Review. Merit Research Journal of Agricultural Science and Soil Sciences 5(5), 80-88.
[6] Britt, J.; J. Tako; F. Y. Bernal and S. Nevil (2005a). Effects of Pre- and Post-Partum Yeast Feeding on Early Lactation Milk Production. Diamond V Research Manual, Conducted for Western Yeast Company 305 W. Ash Street P. O. Box 257 Chillicothe, IL.
[7] Britt, J.; J. Tako; F. Y. Bernal and S. Nevil (2005b). Yeast Product Additives in Lactating, Heat-Stressed Dairy Cow Diets. Diamond V Research Manual, Conducted for: Western Yeast Company, Chillicothe, IL.
[8] Finck, D.; Ribeiro, F.; Burdick, N.; Parr, S.; Carroll, J.; Young, T.; Bernhard, B.; Corley, J.; Estefan, A.; Rathmann, R. (2014). Yeast supplementation alters the performance and health status of receiving cattle. Prof. Anim. Sci., 30, 333–341.
[9] Housewright, B. C.; C. P. Bagley; K. W. Davenport and S. Stewart (2005). Milk production comparison between cows fed live cell yeast and cows fed dead cell yeast. Diamond V Research Manual, Texas A&M University-Commerce Commerce, TX, Conducted for: Western Yeast Company, Chillicothe, IL.
[10] Umesh, K.; V. K. Sareen; S. Singh; U. Kumar and S. Singh (1997) Effect of yeast culture supplement on ruminal microbial populations and metabolism in buffalo calves fed a high roughage diet. Journal of the Science of Food and Agriculture. 73: 231-236.
[11] Plata, P. F.; M. G. D. Mendoza; J. R. B. Gama and M. S. Gonzalez (1994) Effect of a yeast culture (Saccharomyces cerevisiae) on neutral detergent fiber digestion in steers fed oat straw based diets. Animal Feed Science and Technology. 49: 203-210.
[12] Mullins, C.; Mamedova, L.; Carpenter, A.; Ying, Y.; Allen, M.; Yoon, I.; Bradford, B. (2013). Analysis of rumen microbial populations in lactating dairy cattle fed diets varying in carbohydrate profiles and saccharomyces cerevisiae fermentation product. J. Dairy Sci., 96, 5872–5881.
[13] Kumar, DS; Prasad, SC; Prasad, RMV. (2013). Effect of yeast culture (Saccharomyces cerevisiae) on ruminal microbial population in buffalo bulls. Buffalo Bulletin 32, 116-119.
[14] EL-Ashry, M. A.; A. M. Kholif; H. A. El-Alamy; H. M. El-Sayed and T. A. El-Hamamsy (2001a). Effect of different yeast cultures supplementation to diet on the productive performance of lactation buffaloes. Egyptian J. Nutrition and feeds 4: 21-33.
[15] Lascano, G. L. and Heinrichs, A. J. (2009). Rumen fermentation pattern of dairy heifers fed restricted amount of low, medium and high concentrate diets without or with yeast culture. Livestock Science, 124, 48–57.
[16] Panda, A. K.; R. Singh and N. N. Pathak (1995) Effect of dietary inclusion of Saccharomyces cerevisiae on growth performance of crossbred calves. J. of Applied Animal. Research, 7: 195-200.
[17] Habeeb, A. A. M.; S. A. M. Attia and Mona N. Sharoud (2006). Performance of growing rabbits fed rations supplemented with active dried yeast (Saccharomyces cerevisiae). Egyptian J. of Applied Sciences, 21(4A): 1-18.
[18] Saleh, H. M.; M. A. EL Ashry; M. M. Khorshed and Safaa A. Saleh (2004). Performance of male lambs fed rations supplemented with active dried yeast. Egyptian J. of Applied Sciences, 19: 1-12.
[19] Allam, A. M.; K. Elshegly; B. E. A. Borhami and M. A. Mohamed (2001). Effect of Baker's Yeast (Sacchromyces Cerevisiae) Supplementation on digestion in sleep and milk response in dairy Cows. Egyptian J. Nutrition and feeds, 4 (special Issue): 315-323.
[20] EI-Ayek, M. Y.; A. E. Abdel-Khalek; K. T. Osman and S. A. Ebrahim (2009). Effect of dietary supplementation of yeast culture with or without premix on performance of lactating buffalo cows. 1- Digestibility and milk production. Egyptian J. Nutrition and Feeds, 12 (3) Special Issue: 107-117.
[21] EL-Ashry, M. A.; Zaba A. Motagally and Y. A. Maareck (2001b). Effect of live dried Baker's yeast and yeast culture on performance of growing buffalo calves. Egyptian J. Nutrition and feeds 4 (special issue) 607-617.
[22] Dann, H. M.; J. K. Drackley; G. C. McCoy; M. F. Hutjens and J. E. Garrett (2000). Effects of yeast culture (Saccharomyces cerevisiae) on prepartum intake and postpartum intake and milk production of Jersey cows. J Dairy Sci. 83: 123-127.
[23] [23] Dawson, K. A. and Tricarico, J. (2002). The evolution of yeast cultures- 20 years of research. In: Navigating from Niche Markets to Mainstream. Proceedings of Alltech’s European, Middle Eastern and African Lecture Tour, pp 26-43.
[24] Fallon, R. J., and Earley, B. (2004). Effects of Yea-Sacc® 1026 inclusion on the performance of finishing bulls offered an all concentrate diet. Proceedings of the 20th Annual Symposium “Nutritional Biotechnology in the Feed and Food Industries” (Suppl. 1), Lexington, KY, USA, May 24-26, pp 75.
[25] Bertin, G., P. Spring, R. Fallon and B. Earley, (2005). Benefits of yeast culture (Yea-Sacc®1026) supplementation on performance of bull calves. Proc. the 21st Annual Symposium Nutritional Biotechnology in the Feed and Food Industries, Lexington, KY, USA, pp. 107.
[26] Sinclair, L. A., K. Ranson, S. Ames and D. Wilde (2006). The effect of including Yea- Sacc ®1026 yeast culture on the intake and performance of high yielding dairy cows fed a diet high in starch. Proceedings of the 22nd Annual Symposium Nutritional Biotechnology in the Feed and Food Industries Lexington, KY, USA, pp. 62.
[27] El-Ashry, M. A.; Afaf, M. Fayed; K. M. Youssef; F. A. Salem and Hend, A. Aziz (2003). Effect of feeding flavomycin or yeast as feed supplement on lamb performance in Sinai. Egyptian J. Nutrition and feeds, 6 (special issue): 1009-1022.
[28] Pedro, AHG; Lara-Bueno A; Mendoza-Martínez GD; Bárcena-Gama JR; Plata-Pérez FX; López-Ordaz R; Martínez-García JA. (2015). Effects of feeding yeast (Saccharomyces cerevisiae), organic selenium and chromium mixed on growth performance and carcass traits of hair lambs. Journal of Integrative Agriculture 14(3), 575–582.
[29] Jouany, J. P. (2001). Twenty years of research and now more relevant than ever the coming of age of yeast cultures in ruminant diets. In: Responding to a Changing Agricultural Landscape. Alltech’s European, Middle Eastern and African Lecture Tour, pp. 44-69.
[30] AlZahal, O.; Dionissopoulos, L.; Laarman, A.; Walker, N.; McBride, B. (2014). Active dry saccharomyces cerevisiae can alleviate the effect of subacute ruminal acidosis in lactating dairy cows. J. Dairy Sci., 97, 7751–7763.
[31] Wang, Z., Eastridge L. M. and Qiu X. (1999). Effects of forage neutral detergent fiber and yeast culture on performance of cows during early lactation, Journal of Dairy Science, 82: Suppl. p. 71.
[32] WU Zilin (1996). Effects of yeast culture on milk yield and milk composition. International yeast culture dairy research. 3: 214-215.
[33] Strohlein, H. (2003). Back to nature. Live yeasts in feed for dairy cows. DMZ, Lebensm. Ind. Milchwirtsch., 124: 68–71.
[34] Formigoni, A., P. Pezzil, M. Tassinari, G. Bertin and S. Andrieu, (2005). Effect of yeast culture (Yea-Sacc®1026) supplementation on Italian dairy cow performance. Proceedings of the 21st Annual Symposium Nutritional Biotechnology in the Feed and Food Industries, (Suppl. 1), Lexington, KY, USA, pp. 125.
[35] Bertin, G. and S. Andrieu, (2005). Effect of yeast culture (Yea-Sacc®1026) supplementation on performance of high-producing dairy cows. Proc. the 21st Annual Symposium Nutritional Biotechnology in the Feed and Food Industries, Lexington, KY, USA, pp. 126.
[36] Kravale, D., G. Bertin and S. Andrieu (2005). Effect of yeast culture (Yea-Sacc®1026) supplementation on Latvian dairy herd performance and economic impact. Proceedings of the 21st Annual Symposium “Nutritional Biotechnology in the Feed and Food Industries”, Lexington, KY, USA, May 23-25, pp. 126.
[37] Tricarico, J. M., G. A. Harrison and J. D. Johnston (2006). Modeling Yea-Sacc ®1026 effects on ruminal function and performance in lactating dairy cattle within the framework of the CPM dairy ration analyzer. Proc of the 22nd Annual Symposium 'Nutritional Biotechnology in the Feed and Food Industries”, Lexington, KY, USA, pp. 72.
[38] Agovino, M. (2006). Effects of supplementation of Saccharo myces cerevisiae 1026 (Yea-Sacc ®1026) in the diet on the performance of lactating buffalo. Proceedings of the 22nd Annual Symposium “Nutritional Biotechnology in the Feed and Food Industries, Lexington, KY, USA,” pp 71.
[39] Sara, A., V. Cighi, A. Odagui and C. Sichet (2004). The effect of Yea-Sacc ®1026 on performance in sheep. Proceedings of the 20th Annual Symposium “Nutritional Biotechnology in the Feed and Food Industries” (Suppl. 1), Lexington, KY, USA, pp. 76.
[40] Nikkhah, A., M. D. Bonadaki and A. Zali, (2004). Effects of feeding yeast (Saccharomycescerevisiae) on productive performance of lactating Holstein dairy cow. Iranian J. Agric. Sci., 35: 53–60.
[41] EU (2003). Opinion on the use of certain microorganisms as additives in feeding stuffs European Commission, Health & Consumer Protection Directorate-General, Scientific Opinions.
[42] Ando, S., R. I. Khan, J. Takahasi, Y. Gamo, R. Morikawal, Y. Nishiguchi and K. Hayasaka (2004). Manipulation of rumen fermentation by yeast: the effects of dried beer yeast on the in vitro degradability of forages and methane production. Asian-Australas J. Anim. Sci., 17: 68–72.
[43] Schingoethe, D. J.; K. N. Linke; K. F. Kalscheur; A. R. Hippen; D. R. V. Rennich and I. Yoon (2004). Feed Efficiency of Mid-Lactation Dairy Cows Fed Yeast Culture During Summer J. Dairy Sci. 87: 4178-4181.
[44] Lehloenya, KV, DR. Stein, DT. Allen, GE. Selk, DA. Jones, MM. Aleman, TG. Rehberger, KJ. Mertz and LJ Spicer (2008). Effects of feeding yeast and propioni bacteria to dairy cows on milk yield and components, and reproduction. Journal of Animal Physiology and Animal Nutrition, 92(2): 190–202.
[45] Sretenović, Lj., M. P. Petrović, S. Aleksić, V. Pantelić, V. Katić, V. Bogdanović and R. Beskorovajni (2008). Influence of yeast, probiotic and enzymes in rations on dairy cows performances during transition. Biotechnology in Animal Husbandry 24 (5-6), p 33-43.
[46] Blezinger, S. B. (2012). Yeast products can have positive effects on cattle performance. Cattle Today. Online.
[47] Pop, GD.; AR. Rabiee, J. Lean, WK. Sanchez, KL. Dorton, and PS. Morley (2012). A meta-analysis of the effects of feeding yeast culture produced by anaerobic fermentation of Saccharomyces cerevisiae on milk production of lactating dairy cows. J. Dairy Sci. 95: 6027–6041.
[48] Desnoyers, M., S. Giger-Reverdin, G. Bertin, C. Duvaux-Ponter, and D. Sauvant. (2009). Meta-analysis of the influence of Saccharomyces cerevisiae supplementation on ruminal parameters and milk production of ruminants. J. Dairy Sci. 92: 1620–1632.
[49] Erasmus, L. J.; Robinson, P. H.; Ahmadi, A; Hinders, R. and Garrett, J. E. (2005). Influence of prepartum and postpartum supplementation of a yeast culture and monensin or both on ruminal fermentation and performance of multiparous dairy cows. Anim. Feed Sci. Technol., 122: 219-239.
[50] El-Ghani, AAA. (2004). Influence of diet supplementation with yeast culture (Saccharomyces cerevisiae) on performance of Zaraibi goats. Small Rumin. Res. 52, 223-229.
[51] Jouany, J. P. (2006). Optimizing rumen functions in the close-up transition period and early lactation to drive dry matter intake and energy balance in cows. Anim. Reprod. Sci. 96, 250-264.
[52] Stella, AV.; Paratte, R.; Valnegri, L.; Cigalino, G.; Soncini, G.; Chevaux, E.; Dell'Orto, V.& Savoini, G., (2007). Effect of administration of live Saccharomyces cerevisiae on milk production, milk composition, blood metabolites, and faecal flora in early lactating dairy goats. Small Rumin. Res. 67, 7-13.
[53] Kholif, S. M. and Khorshed, MM. (2006). Effect of yeast or selenized yeast supplementations to rations on the productive performance of lactating buffaloes. Egypt J. Nutr. Feeds, 9: 193-205.
[54] Harris, B. and R. Lobo (1988). Feeding yeast culture to lactating dairy cows. J. Dairy Sci. 71 (Suppl. 1): 276.
[55] Harris, B. and D. W. Webb (1990). The effect of feeding a concentrated yeast culture product to lactating dairy cows. J. Dairy Sci. 73 (Suppl. 1): 266.
[56] Shaver, R. D. and J. E. Garrett (1997). Effect of dietary yeast culture on milk yield, composition, and component yields at commercial dairies. The Professional Animal Scientist 13: 204-207.
[57] Sanchez, W. K., G. D. Poppy, M. A. Guy, and J. E. Garrett. (1997). Influence of yeast on lactational performance and blood mineral concentration of high production dairy cows on a commercial dairy. J. Dairy Sci. 80 (Suppl. 1): 210.
[58] Robinson, P. H. and J. E. Garrett (1999). Effect of yeast culture (Saccharomyces cerevisiae) on adaptation of cows to postpartum diets and on lactational performance. J. Anim. Sci. 77: 988-999.
[59] Abo-Amer, A. A. (2009). Improving milk production using nuclear tecnique. MSc. thesis, Faculty of Agriclture, Cairo University, Giza, Egypt.
[60] Lesmeister, K. E.; A. J. Heinrichs and M. T. Gabler (2004). Effects of supplemental yeast (Saccharomyces cerevisiae) culture on rumen development, growth characteristics, and blood parameters in neonatal dairy calves. J. Dairy Sci. 87, 1832-1839.
[61] Galvao, K. N.; J. E. Santos; A. Coscioni; M. Villasenor; W. M. Sischo and A. C. Berge (2005). Effect of feeding live yeast products to calves with failure of passive transfer on performance and patterns of antibiotic resistance in fecal Escherichia coli. Reprod. Nutr. Dev. 45, 427-440.
[62] Linn, J. and Raeth-Knight, M. (2006). “Yeast in Dairy Cattle Diets.” 2006 Four State Dairy Nutrition and Management Conference. pp. 85-90.
[63] Laborde, J. M. (2008). Effects of probiotics and yeast culture on rumen development and growth of dairy calves. Master of Science, Thesis, Faculty of the Louisiana State University and Agricultural and Mechanical College.
[64] Belknap, C. R. (2008). Consider Yeast Culture as a Feed Additive for Growing and Finishing Beef Cattle. University of Minnesota Extension, Beef Center.
[65] Midwest foods manufacturing Inc. (2005). 11359 Franklin Avenue, Franklin Park, Illinois 60131, USA.
[66] Macedo, R.; Arredondo, V. and Beauregard, J. (2006). Influence of yeast culture on productive performance of intensively fattened Pelibuey lambs in Colima, México. Santos-Soto. Rev. AIA. 10(3): 41: 59-67.
[67] Abdel-Khalek, A. E.; M. Y. EI-Ayek; K. T. Osman and S. A. Ibrahim (2009). Effect of dietary supplementation of yeast culture with or without premix on performance of lactating buffalo cows. 2- Reproductive performance. J. Nutrition and Feeds, 12 (3) Special Issue: 119-132.
[68] Bruno R. G. S., H. Rutigliano, R. L. Cerri, P. H. Robinson and J. E. P. Santos (2009). Effect of feeding yeast culture on reproduction and lameness in dairy cows under heat stress. Animal Reproduction Science , 113, Issues 1–4: 11–21.
[69] Ashour, G.; Habeeb, A. A.; Mourad, H. M. and Abo-Amer, A. A. (2009). Effect of yeast (Saccharomyces cerevisiae1026) ration supplementation on milk production and blood parameters of lactating baladi cows. Egypt. J. Basic Appl. Physio., 8(1): 237-254.
[70] Habeeb, AAM (2017). Current View of the Significance of Yeast for Ruminants a Review 1- Role of Yeast and Modes of Action. American Journal of Library and Information Science 1(2), 53-59.
[71] Kowalik, B; Michałowski T; Pająk, JJ; Taciak, M; Zalewska M. (2011). The effect of live yeast, Saccharo myces cerevisiae, and their metabolites on ciliate fauna, fibrolytic and amylolytic activity, carbohydrate digestion and fermentation in the rumen of goats. J Animal and Feed Sciences, 20, 526–536.
[72] Broadway PR., JA. Carroll and NCB. Sanchez (2015). Live yeast and yeast cell wall supplements enhance immune function and performance in food-producing livestock: A Review Microorganisms, 3: 417- 427.
[73] Kamra, D. N. and Pathak, N. N. (2005). Improvement in livestock productivity by use of probiotics: A review. Indian J. Anim. Sci. 75: 128-134.
Cite This Article
  • APA Style

    Alsaied Alnaimy Mostafa Habeeb. (2017). Importance of Yeast in Ruminants Feeding on Production and Reproduction. Ecology and Evolutionary Biology, 2(4), 49-58. https://doi.org/10.11648/j.eeb.20170204.11

    Copy | Download

    ACS Style

    Alsaied Alnaimy Mostafa Habeeb. Importance of Yeast in Ruminants Feeding on Production and Reproduction. Ecol. Evol. Biol. 2017, 2(4), 49-58. doi: 10.11648/j.eeb.20170204.11

    Copy | Download

    AMA Style

    Alsaied Alnaimy Mostafa Habeeb. Importance of Yeast in Ruminants Feeding on Production and Reproduction. Ecol Evol Biol. 2017;2(4):49-58. doi: 10.11648/j.eeb.20170204.11

    Copy | Download

  • @article{10.11648/j.eeb.20170204.11,
      author = {Alsaied Alnaimy Mostafa Habeeb},
      title = {Importance of Yeast in Ruminants Feeding on Production and Reproduction},
      journal = {Ecology and Evolutionary Biology},
      volume = {2},
      number = {4},
      pages = {49-58},
      doi = {10.11648/j.eeb.20170204.11},
      url = {https://doi.org/10.11648/j.eeb.20170204.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eeb.20170204.11},
      abstract = {Benefits of yeast supplements for ruminants are shifts in microbial population numbers and species, favorable changes in volatile fatty acids contents of rumen, positive effects on rumen ammonia disappearance, positive effects on rumen pH, promotes metabolism digestion, increase in fiber digestibility and changes in microbial protein and amino acids in large intestine. In addition, benefits of Yeast supplements for ruminants are improving the overall intestinal bacteria balance, reducing digestive problems, lower risk of acidosis and reduction in the humidity of bedding resulting in lower stress levels. Feeding on feed mixture contained Active dry yeast (ADY) improved the appetite of animals which lead to increase the feed intake and consequently increased the daily weight gain of the treated animals. From the physiological point of view, adding ADY caused significant increase the levels of both T4 and T3 hormones which lead to increase the protein and fat biosyntheses. Moreover, benefits of yeast supplements for ruminants are increased milk production and improvements in milk quality, improves milk selenium content, reduced mastitis and somatic cell count, less stillbirths, weak neonates, improves fertility, reduced incidence of retained placenta, improved immune response, increases immune resistance, high content in B-vitamins and trace elements, enhances weight gain and feed utilization.},
     year = {2017}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Importance of Yeast in Ruminants Feeding on Production and Reproduction
    AU  - Alsaied Alnaimy Mostafa Habeeb
    Y1  - 2017/09/21
    PY  - 2017
    N1  - https://doi.org/10.11648/j.eeb.20170204.11
    DO  - 10.11648/j.eeb.20170204.11
    T2  - Ecology and Evolutionary Biology
    JF  - Ecology and Evolutionary Biology
    JO  - Ecology and Evolutionary Biology
    SP  - 49
    EP  - 58
    PB  - Science Publishing Group
    SN  - 2575-3762
    UR  - https://doi.org/10.11648/j.eeb.20170204.11
    AB  - Benefits of yeast supplements for ruminants are shifts in microbial population numbers and species, favorable changes in volatile fatty acids contents of rumen, positive effects on rumen ammonia disappearance, positive effects on rumen pH, promotes metabolism digestion, increase in fiber digestibility and changes in microbial protein and amino acids in large intestine. In addition, benefits of Yeast supplements for ruminants are improving the overall intestinal bacteria balance, reducing digestive problems, lower risk of acidosis and reduction in the humidity of bedding resulting in lower stress levels. Feeding on feed mixture contained Active dry yeast (ADY) improved the appetite of animals which lead to increase the feed intake and consequently increased the daily weight gain of the treated animals. From the physiological point of view, adding ADY caused significant increase the levels of both T4 and T3 hormones which lead to increase the protein and fat biosyntheses. Moreover, benefits of yeast supplements for ruminants are increased milk production and improvements in milk quality, improves milk selenium content, reduced mastitis and somatic cell count, less stillbirths, weak neonates, improves fertility, reduced incidence of retained placenta, improved immune response, increases immune resistance, high content in B-vitamins and trace elements, enhances weight gain and feed utilization.
    VL  - 2
    IS  - 4
    ER  - 

    Copy | Download

Author Information
  • Department of Biological Applications, Radioisotopes Applications Division, Nuclear Research Center, Atomic Energy Authority, Inshas, Cairo, Egypt

  • Sections