Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

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1 st WorkshopXIII International Feed Technology Symposium7. Memiši, N., Bauman, F.: Koza. Poljoprivredna biblioteka. Beograd, 2002,p 70.8. Memiši, N., Bauman, F.: Ishrana koza u periodu bremenitosti.Poljoprivredne aktuelnosti, br 1-2, (2003) str. 75-86, Beograd.9. Memiši, N., Bauman, F.: Ishrana koza u laktacionom periodu.Poljoprivredne aktuelnosti, br 1-2, (2003b), str. 87-98, Beograd.10. Memiši, N., Bauman, F., Mekić, C., Bogdanović, V.: Značaj mineralneishrane za proizvodnju i zdravstveno stanje koza. XVI Inovacije ustočarstvu. Biotehnologija u stočarstvu 18 (5-6), (2004), p 81-85, Beograd.11. Memiši, N., Bauman, F.: Specifičnosti varenja hrane u digestivnom traktukoza. Poljoprivredne aktuelnosti, br 1-2, (2004a), str. 47-60, Beograd.12. Memiši, N., Bauman, F., Pavlov, B.: Značaj mikroelemenata u ishranikoza na njihove proizvodne rezultate. Zbornik naučnih radova XXISavetovanja agronoma, veterinara i tehnologa, Vol. 13 br. 3-4, (2007) 143-150, Beograd.13. Memiši, N., Bauman, F.: Ishrana koza. Monografija, Admiralbook,Beograd, 2007, p 230.14. Memiši, N., Bauman, F., Pavlov, B.: Normiranje energije za koze uintenzivnoj proizvodnji. Zbornik naučnih radova XXI Savetovanjaagronoma, veterinara i tehnologa, Vol. 13 br. 3-4, (2008a), 119-128,Beograd15. NRC: Nutrient Requirements of Dairy Cattle 5th ed. National AcademyPress, Washington D.C, 1978.16. NRC: Nutrient Requirements of Goats: Angora, Dairy and Meat Goats inTemperate and Tropical Countries. National Academy Press, WashingtonD.C. 198117. NRC: Nutrient Requirements of Sheep, Goats, Cervids and Camelids.National Academy Press, Washington D.C, 2007.18. Kessler, J.: Alimentation de la chevre laitiere. UFA-Revue, 6, 1985.19. Kessler, J.: Winterfutterung von Schaf und Ziege-Futtermittelpalette. Forum10. RAP, Posieux, 2002.20. Luo, J., A. L. Goetsch, I. V. Nsahlai, Z. B. Johnson, T. Sahlu, J. E.Moore, C.L. Ferrell, M. L. Galyean and F. N. Owens. : Maintenanceenergy requirements of goats: predictions based observations of heat andrecovered energy. Small Ruminant Research 53, (2004), 221-230.21. Luo, J., A. L. Goetsch, I. V. Nsahlai, T. Sahlu, C.L. Ferrell, F. N.Owens, M. L. Galyean J. E. Moore and Z. B. Johnson. : Metabolizableprotein requirements for maintenance and gain of growing goats. SmallRuminant Research 53, (2004a), 309-326.22. Sahlu, T., A. L. Goetsch, J. Luo, I. V. Nsahlai, J. E. Moore, M. L.Galyean, F.N. Owens, C. L. Ferrell and Z. B. Johnson. : Nutrientrequirements of goats: developed equations, other considerations, andfuture research to improve them. Small Ruminant Research 53, (2004) 191-219.23. Solaiman, S.G.: Feeding management of a meat goat herd, Technical PaperNo. 06-11, Tuskegee University, 2008.161
1 st WorkshopXIII International Feed Technology Symposium162EFFECT OF BENTONITE IN PELLETED FEED FOR CALVESBojan Stojanović 1 , Goran Grubić 1 , Milan Adamović 2 , Mihailo Radivojević 3 , HoreaŠamanc 41 University in Belgrade Faculty of Agriculture, Nemanjina 6, 11080 Belgrade, Serbia2 Institute for technology of nuclear and other mineral row materials, Franše d Epera 86,11000 Belgrade, Serbia3 Institute PKB „Agroekonomik“, 11000 Belgrade, Serbia4 University in Belgrade Faculty of Veterinary Medicine, Bulevar oslobođenja 18, 11000Belgrade, SerbiaABSTRACTNumerous researching show that bentonite except of using as binding material whichincreases pellets durability, act as buffer, also has favorable effect on ruminal acetate topropionate ratio, on ammonium N utilization in rumen, efficiently adsorbs mycotoxins infeed. Using of bentonite in feed for all category of cattle, can be of particular importancefor high-concentrate rations, rations with high content and surplus of rumen degradableprotein, as in diets that include feeds with presence of mycotoxins. Considering resultsof previously studies, and nonexistence of exactly results concerning on effects of usingbentonite in diets for calves, this experiment was conducted with objective to determineeffects of using of bentonite in concentrate for calves, on production performances ofcalves 30-120 days old. Twenty male Holstein calves were assigned in two groups:control group, fed feed without bentonite, and experimental group fed feed with added1.5 % of bentonite. Mixture contained 18 % of CP, and in addition to feed, calves werefed high-quality alfalfa hay ad libitum. Experimental group show higher average dailygain (1.084 and 0.972 kg/day), higher average intake of feed (1.89 and 1.81 kg/day),better feed conversion (1.74 and 1.86 kg/kg of gain), and higher values of ruminal pH atage 80. and 120. day. In diets for calves with ad libitum intake of feed, it can berecommended using of bentonite for improvement of production performances.Key words: bentonite, feed, calves, nutritionINTRODUCTIONBentonite is colloid clay of volcanic origin, and it is hydrated aluminum-silicate(montmorilonite) that contains sodium and calcium as changeable ion. Sodium-bentonitecharacterized distinct ability for hydration when increases mass and volume. Bentoniteas binding material increases pellet durability and quality (Stojanović et al. 2008). Inmixtures for animal nutrition, bentonite is used in proportion of 1-2 % (Salari et al.2006). In water suspension particles of bentonite are charged with negative electricity,and this causes cation attracting (Bringe and Schultz, 1969). Using of bentonite in dietsfor rams in portion of 2 %, increased N retention, especially in condition of increasedreleasing of NH 3 in rumen (Martin et al. 1969). Authors emphasized the significance of
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