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Dietary Chlorella vulgaris microalgae improves feed utilization, milk production and concentrations of conjugated linoleic acids in the milk of Damascus goats

  • A. E. KHOLIF (a1), T. A. MORSY (a1), O. H. MATLOUP (a1), U. Y. ANELE (a2), A. G. MOHAMED (a1) and A. B. EL-SAYED (a3)...


Fifteen lactating Damascus goats (44 ± 0·8 kg body weight) were used in a completely randomized design to evaluate the supplementation of Chlorella vulgaris microalgae at 0 (Control), 5 (Alg05) and 10 g/goat/day (Alg10) for 12 weeks. Chlorella vulgaris treatments increased feed intake and apparent diet digestibility compared with a control diet. No differences were noted in the ruminal pH and ammonia-N concentrations, but increased concentration of total volatile fatty acids and propionic acid were observed in goats fed with Alg05 and Alg10. Diets of Alg05 and Alg10 increased serum glucose concentration but decreased glutamate-oxaloacetate transaminase, glutamate-pyruvate transaminase and cholesterol concentrations. Additionally, C. vulgaris supplementation moderately increased milk yield, energy corrected milk, total solids, solids not fat and lactose. Feeding Alg05 and Alg10 diets increased milk unsaturated fatty acids with concomitant increases in total conjugated linoleic acid concentrations. It is concluded that the daily inclusion of 5 or 10 g of C. vulgaris in the diets of Damascus goats increased milk yield and positively modified milk fatty acid profile.


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Abedi, E. & Sahari, M. A. (2014). Long-chain polyunsaturated fatty acid sources and evaluation of their nutritional and functional properties. Food Science & Nutrition 2, 443463.
Anele, U. Y., Yang, W. Z., McGinn, P. J., Tibbetts, S. M. & McAllister, T. A. (2016). Ruminal in vitro gas production, dry matter digestibility, methane abatement potential and fatty acid biohydrogenation of six species of microalgae. Canadian Journal of Animal Science 96, 354363.
Annison, E. F. (1954). Some observations on volatile fatty acids in the sheep's rumen. Biochemical Journal 57, 400405.
AOAC (1997). Official Methods of Analysis of the Association of Official Analytical Chemist, Vol. 1, 16th edn. Washington, DC: Association of Official Analytical Chemists.
Boyd, J. W. (1984). The interpretation of serum biochemistry test results in domestic animals. Veterinary Clinical Pathology 13, 714.
Carro, M. D. & Miller, E. L. (1999). Effect of supplementing a fibre basal diet with different nitrogen forms on ruminal fermentation and microbial growth in an in vitro semi-continuous culture system (RUSITEC). British Journal of Nutrition 82, 149157.
Chakraborty, M., McDonald, A. G., Nindo, C. & Chen, S. (2013). An α-glucan isolated as a co-product of biofuel by hydrothermal liquefaction of Chlorella sorokiniana biomass. Algal Research 2, 230236.
El-Sayed, A. E. B., Abdalla, F. E. & Abdel-Maguid, A. A. (2001). Use of some commercial fertilizer compounds for Scenedesmus cultivation. Egyptian Journal of Phycology 2, 916.
El-Sayed, A. B., Battah, M. G. & Wehedy, E. (2015). Utilization efficiency of artificial carbon dioxide and corn steam liquor by Chlorella vulgaris . Biolife 3, 391402.
FASS (2010). Guide for the Care and use of Agricultural Animals in Research and Teaching, 3rd edn. Champaign, IL: Federation of Animal Science Societies.
Ferret, A., Plaixats, J., Caja, G., Gasa, J. & Prio, P. (1999). Using markers to estimate apparent dry matter digestibility, faecal output and dry matter intake in dairy ewes fed Italian ryegrass hay or alfalfa hay. Small Ruminant Research 33, 145152.
Flatt, W. P., Warner, R. G. & Loosli, J. K. (1956). Absorption of volatile fatty acids from the reticulo-rumen of young dairy calves. Journal of Dairy Science 39, 135 (abstract).
Glover, K. E., Budge, S., Rose, M., Rupasinghe, H. P. V., MacLaren, L., Green-Johnson, J. & Fredeen, A. H. (2012). Effect of feeding fresh forage and marine algae on the fatty acid composition and oxidation of milk and butter. Journal of Dairy Science 95, 27972809.
Han, J. G., Kang, G. G., Kim, J. K. & Kim, S. H. (2002). The present status and future of Chlorella. Food Science and Industry 6, 6469.
Hosten, A. O. (1990). BUN and creatinine. In Clinical Methods: The History, Physical, and Laboratory Examinations, 3rd edn. (Eds Walker, H. K., Hall, W. D. & Hurst, J. W.), pp. 874878. Boston, UK: Butterworths.
ISO-IDF (2002). Milk Fat-preparation of Fatty Acid Methyl Esters. International Standard ISO 15884-IDF 182. 2002. Brussels, Belgium: International Dairy Federation.
Iwamoto, H. (2004). Industrial production of microalgal cell-mass and secondary products – major industrial species. Chlorella. In Handbook of Microalgal Culture: Biotechnology and Applied Phycology (Ed. Richmond, A.), pp. 255263. Oxford, UK: Blackwell Science.
Janczyk, P., Langhammer, M., Renne, U., Guiard, V. & Souffrant, W. B. (2006). Effect of feed supplementation with Chlorella vulgaris powder on mice reproduction. Archiva Zootechnica 9, 122134.
Kadegowda, A. K. G., Bionaz, M., Piperova, L. S., Erdman, R. A. & Loor, J. J. (2009). Peroxisome proliferators-activated receptor-γ activation and long-chain fatty acids alter lipogenic gene networks in bovine mammary epithelial cells to various extents. Journal of Dairy Science 92, 42764289.
Karkos, P. D., Leong, S. C., Karkos, C. D., Sivaji, N. & Assimkopoulos, D. A. (2008). Spirulina in clinical practice: evidence-based human applications. Evidence-Based Complementary and Alternative Medicine: cCAM 2011, article ID 531053. doi: 10.1093/ecam/nen058
Kholif, A. E., Khattab, H. M., El-Shewy, A. A., Salem, A. Z. M., Kholif, A. M., El-Sayed, M. M., Gado, H. M. & Mariezcurrena, M. D. (2014). Nutrient digestibility, ruminal fermentation activities, serum parameters and milk production and composition of lactating goats fed diets containing rice straw treated with Pleurotus ostreatus . Asian-Australasian Journal of Animal Sciences 27, 357364.
Kholif, A. E., Morsy, T. A., Gouda, G. A., Anele, U. Y. & Galyean, M. L. (2016). Effect of feeding diets with processed Moringa oleifera meal as protein source in lactating Anglo-Nubian goats. Animal Feed Science and Technology 217, 4555.
Kholif, A. E., Elghandour, M. M. Y., Salem, A. Z. M., Barbabosa, A., Márquez, O. & Odongo, N. E. (in press). The effects of three total mixed rations with different concentrate to maize silage ratios and different levels of microalgae Chlorella vulgaris on in vitro gas, methane and carbon dioxide production. Journal of Agricultural Science, Cambridge. doi: 10.1017/S0021859616000812
Kotrbáček, V., Doubek, J. & Doucha, J. (2015). The chlorococcalean alga Chlorella in animal nutrition: a review. Journal of Applied Phycology 27, 21732180.
Lum, K. K., Kim, J. & Lei, X. G. (2013). Dual potential of microalgae as a sustainable biofuel feedstock and animal feed. Journal of Animal Science and Biotechnology 4, 53. doi: 10.1186/2049–1891-4-53
Nagaoka, S., Shimizu, K., Kaneko, H., Shibayama, F., Morikawa, K., Kanamaru, Y., Otsuka, A., Hirahashi, T. & Kato, T. (2005). A novel protein C-phycocyanin plays a crucial role in the hypocholesterolemic action of Spirulina platensis concentrate in rats. Journal of Nutrition 135, 24252430.
NRC (2001). Nutrient Requirements of Dairy Cattle, 7th revised edn. Washington, DC: National Academies Press.
NRC (2007). Nutrient Requirements of Small Ruminants: Sheep, Goats, Cervids, and New World Camelids. Washington, DC: National Academies Press.
Radhakrishnan, S., Bhavan, P. S., Seenivasan, C., Shanthi, R. & Muralisankar, T. (2014). Replacement of fishmeal with Spirulina platensis, Chlorella vulgaris and Azolla pinnata on non-enzymatic and enzymatic antioxidant activities of Macrobrachium rosenbergii . Journal of Basic and Applied Zoology 67, 2533.
Reynolds, C. K., Cannon, V. L. & Loerch, S. C. (2006). Effects of forage source and supplementation with soybean and marine algal oil on milk fatty acid composition of ewes. Animal Feed Science and Technology 131, 333357.
Rigout, S., Hurtaud, C., Lemosquet, S., Bach, A. & Rulquin, H. (2003). Lactational effect of propionic acid and duodenal glucose in cows. Journal of Dairy Science 86, 243253.
Rojo, R., Kholif, A. E., Salem, A. Z. M., Elghandour, M. M. Y., Odongo, N. E., Montes De Oca, R., Rivero, N. & Alonso, M. U. (2015). Influence of cellulase addition to dairy goat diets on digestion and fermentation, milk production and fatty acid content. Journal of Agricultural Science, Cambridge 153, 15141523.
Sales, J. & Janssens, G. P. J. (2003). Acid-insoluble ash as a marker in digestibility studies: a review. Journal of Animal and Feed Sciences 12, 383401.
SAS (2006). Statistical Analysis Systems. Version 9.2. Cary, NC: SAS Institute.
Satter, L. D. & Slyter, L. L. (1974). Effect of ammonia concentration on rumen microbial protein production in vitro . British Journal of Nutrition 32, 199208.
Shingfield, K. J., Chilliard, Y., Toivonen, V., Kairenius, P. & Givens, D. I. (2008). Trans fatty acids and bioactive lipids in ruminant milk. In Bioactive Components of Milk (Ed. Bösze, Z.), pp. 365. Advances in Experimental Medicine and Biology 606. Dordrecht, The Netherlands: Springer.
Simopoulos, A. P. (2002). The importance of the ratio of omega-6/omega-3 essential fatty acids. Biomedicine & Pharmacotherapy 56, 365379.
Sjaunja, L. O., Baevre, L., Junkkarinen, L., Pedersen, J. & Setala, J. (1991). A Nordic proposal for an energy corrected milk (ECM) formula. In Performance Recording of Animals. State of the Art (Eds Crettenand, J., Moll, J., Mosconi, C. & Wegmann, S.), pp. 156157. EAAP Publication no. 50. Wageningen, The Netherlands: Wageningen Academic.
Spackman, D. H., Stein, W. H. & Moor, S. (1958). Automatic recording apparatus for use in chromatography of amino acids. Analytical Chemistry 30, 11901206.
Stainer, R. Y., Kunisawa, R., Mandel, M. & Cohen-Bazire, G. (1971). Purification and properties of unicellular blue green algae (order Chroococcales). Bacteriological Reviews 35, 171205.
Tibbetts, S. M., MacPherson, T., McGinn, P. J. & Fredeen, A. H. (in press). In vitro digestion of microalgal biomass from freshwater species isolated in Alberta, Canada for monogastric and ruminant animal feed applications. Algal Research. doi: 10.1016/j.algal.2016.01.016.
Toral, P. G., Hervás, G., Gómez-Cortés, P., Frutos, P., Juárez, M. & De La Fuente, M. A. (2010). Milk fatty acid profile and dairy sheep performance in response to diet supplementation with sunflower oil plus incremental levels of marine algae. Journal of Dairy Science 93, 16551667.
Tsiplakou, E., Abdullah, M. A. M., Skliros, D., Chatzikonstantinou, M., Flemetakis, E., Labrou, N. & Zervas, G. (2016). The effect of dietary Chlorella vulgaris supplementation on micro-organism community, enzyme activities and fatty acid profile in the rumen liquid of goats. Journal of Animal Physiology and Animal Nutrition. doi: 10.1111/jpn.12521.
Tyrell, H. F. & Reid, J. T. (1965). Prediction of the energy value of cows’ milk. Journal of Dairy Science 48, 12151223.
Ulbricht, T. L. V. & Southgate, D. A. T. (1991). Coronary heart disease: seven dietary factors. Lancet 338, 985992.
Van Emon, M. L., Loy, D. D. & Hansen, S. L. (2015). Determining the preference, in vitro digestibility, in situ disappearance, and grower period performance of steers fed a novel algae meal derived from heterotrophic microalgae. Journal of Animal Science 93, 31213129.
Van Soest, P. J., Robertson, J. B. & Lewis, B. A. (1991). Methods for dietary fiber, neutral detergent fiber, and non-starch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74, 35833597.
Vanhatalo, A., Varvikko, T. & Huhtanen, P. (2003). Effects of various glucogenic sources on production and metabolic responses of dairy cows fed grass silage-based diets. Journal of Dairy Science 86, 32493259.
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