Skip to main content
    • Aa
    • Aa

Effect of rumen-protected supplements of fish oil on intake, digestibility and nitrogen balance of growing goats

  • J. R. Fernández (a1), M. Rodríguez Osorio (a1), E. Ramos (a1), G. de la Torre (a1), F. Gil Extremera (a1) and M. R. Sanz Sampelayo (a1)...

Two groups of six male goats were used to assess the effects of rumen-protected supplements offish oil on intake, digestibility and nitrogen (N) balance. The animals were offered a diet consisting of forage and concentrate, the latter fraction supplemented with 0 (control) or lOOg/kg of rumen-protected fish oil supplement (PFO), containing a high proportion of the n-3 series (whole diet contained 0 or 60 g PFO per kg dry matter). No significant differences (P > 0.05) were found between the two groups concerning live-weight gain, food intake, digestibility of DM, organic matter, N, neutral-detergent fibre and energy. In contrast, there were differences (P < 0.05) regarding the digestibility of fat and of acid-detergent fibre, which were higher among the animals given the PFO diet. With respect to the individual fatty acids, we observed higher digestibility (P < 0.05) of C14:0, C16:0, C18:0 and C20:0 among the animals given the PFO diet. The digestibility of C14:0, C18:0 and C20:0 was found to be negative among the animals given the control diet. No significant differences (P > 0-05) were found regarding digestibility of total C18:1. In contrast, the coefficients for C18:2 (n-6) and C18:3 (n-3) were higher (P < 0.05) among the non-supplemented animals. The intake and faecal flow values of C18:0 suggest that the mono- and polyunsaturated fatty acids with 18 atoms of carbon may, in both cases, undergo partial hydrogenation, which would be greater among the control group. The utilization of C20:5 (n-3) and, especially, of C22 : 6 (n-3), which were consumed only by the animals given the PFO diet, was estimated at 1-000. The PFO diet also produced lower levels ofurinary-N excretion (P < 0.05), giving rise to higher N balances (P < 0.05).

Corresponding author
Hide All
AbuGhazalehA. A. and JenkinsT. C. 2004. Disappearance of docosahexaenoic and eicosapentaenoic acids from cultures of mixed ruminal microorganisms. Journal of Dairy Science 87: 645651.
AguileraJ. E., LaraL., MolinaE. and PrietoC. 1991. Energy balance studies with growing Granadina goats during fasting and maintenance. Small Ruminant Research 5: 109115.
AshesJ. R., SiebertB. D., GulatiS. K., CuthbertsonA. Z. and ScottT. W. 1992. Incorporation of n-3 fatty acids of fish oil into tissue and serum lipids of ruminants. Lipids 277: 629631.
Association of Official Analytical Chemists. 1990. Official methods of analysis, 15th edition. AOAC, Washington, DC.
BaldiA., CheliF., CorinoC., Dell'OrtoV. and PolidoriF. 1992. Effects of feeding calcium salts of long chain fatty acids on milk yield, milk composition and plasma parameters of lactating goats. Small Ruminant Research 6: 303310.
BockB. J., HarmonD. L., Brandt R. T.Jr and SchneiderJ. E. 1991. Fat source and calcium level effects on finishing steer performance, digestion, and metabolism. Journal of Animal Science 69: 22112224.
BozaJ., Pérez MartínezL. and Sanz SampelayoM. R. 2000. Producto y procedimiento de obtención de una grasa protegida para incluir en las dietas de los rumiantes. Patente de inventión no, 2. 136536.
BurkeJ. M., StaplesC. R., RiscoC. A., SotaR. L. and ThatcherW. W. 1997. Effect of ruminant grade menhaden fish meal on reproductive and productive performance of lactating dairy cows. Journal of Dairy Science 80: 33863398.
ClappertonJ. L. and SteeleW. 1983. Fat supplementation in animal production ruminants. Proceedings of the Nutrition Society 42: 243.
DavenportG., BolingG., GayN. and BuntingL. 1987. Effect of soybean lipid on growth and ruminal nitrogen metabolism in cattle fed soybean meal or ground whole soybean. Journal of Animal Science 65: 16801689.
DaviglusM. L., StamlerJ., OrenciaA. J., DyerA. R., LiuK., GreenlandP., WalshM. K., MorrisD. and SekelleR. B. 1997. Fish consumption and the 30-years risk of fatal myocardial infarction. New England Journal of Medicine 336: 10461053.
DoreauM. and ChilliardI. 1997. Effects of ruminal or postruminal fish oil supplementation on intake and digestion in dairy cows. Reproduction, Nutrition, Development 37: 113124.
EnjalbertF., MoncoulonR., VernayM. and GriessD. 1994. Effects of different forms of polyunsaturated fatty acids on rumen fermentation and total nutrient digestibility of sheep fed prairie hay based diets. Small Ruminant Research 14: 127135.
FallonR. J., WilliamsP. E. V. and InnesG. M. 1986. The effects on feed intake, growth and digestibility of nutrients of including calcium soaps of fat in diets for young calves. Animal Feed Science and Technology 14: 103115.
FerlayA., ChabrotJ., ElmeddahY. and DoreauM. 1993. Ruminal lipid balance and intestinal digestion by dairy cows fed calcium salts of rapeseed oil fatty acids or rapeseed oil. Journal of Animal Science 71: 22372245.
FievezV. I., Van NevelC. J. and DemeyerD. I. 2000. Lipolysis and biohydrogenation of PUFA's from fish oil during in vitro incubations with rumen contents. Proceedings of the Nutrition Society 59: 193A.
ForbesJ. M. 1986. Dietary factors affecting intake. In The voluntary feed intake of farm animals (ed. ForbesJ. M.), pp. 85113. Butterworths, London.
FranklinS. T., MartinK. R., BaerR. J., ShingoetheD. J. and HippenA. R. 1999. Dietary marine algae (Schizochytrium sp.) increases concentrations of conjugated linoleic, docosahexaenoic and transvaccenic acids in milk of dairy cows. Journal of Nutrition 192: 20482052.
GrummerR. R. 1991. Effect of feed on the composition of milk fat. Journal of Dairy Science 74: 32443257.
GrummerR. R. 1988. Influence of prilled fat and calcium salts of palm oil fatty acids on ruminal fermentation and nutrient digestibility. Journal of Dairy Science 71: 117123.
GulatiS. K., AshesJ. R. and ScottT. W. 1999. Hydrogenation of eicosapentaenoic and docosahexaenoic acids and their incorporation into milk fat. Animal Peed Science and Technology 79: 5764.
HermansenJ. E. and LundP. 1990. Fatty acid composition and milk quality related to feeding Ca-saponified palm acid oil to different breeds of dairy cows. Journal of Dairy Research 57: 2331.
JenkinsT. C. and PalmquistD. L. 1984. Effect of fatty acids or calcium soaps on rumen and total nutrient digestibility of dairy rations. Journal of Dairy Science 67: 978986.
KadzereC. T. and JinguraR. 1993. Digestibility and nitrogen balance in goats given different levels of crushed whole soybeans. Small Ruminant Research 10: 175180.
LessireM., DoreauM. and AumaitreA. 1992. Utilisation digestive et métabolique des corps gras chez les animaux domestiques. In Manuel des Corps Gras, pp. 683694. Lavoisier, Paris.
Martín AlonsoJ. J. 2004. [Preparation against ruminal metabolism of a protected fat rich in polyunsaturated fatty acids. Its utilisation with the aim of obtaining a healthier milk.] Ph. D. thesis, University of Granada.
NeyD. M. 1991. Potential for enhancing the nutritional properties of milk fat. Journal of Dairy Science 74: 40024012.
Rodríguez OsorioM., Martín AlonsoJ. J., Sanz SampelayoM. R., Gil ExtremeraF. and Gómez GarcíaV. 2001. N-3 polyunsaturated fatty acids and parasitism: effect of a diet supplemented with fish oil on the course of the rat trichinellosis. Annals of Nutrition and Metabolism 45: 9596.
SandersonP. 1986. A new method of analysis of feedingstuffs for the determination of crude oils and fats. In Recent advances in animal nutrition (ed. HaresignW. and ColeD. J. A.), pp. 7786. Butterworths, London.
Sanz SampelayoM. R., PerezL., Martin AlonsoJ. J., AmigoL. and BozaJ. 2002. Effects of concentrates with different contents of protected fat rich in PUFAs on the performance of lactating Granadina goats. II. Milk production and composition. Small Ruminant Research 43: 141148.
Sanz SampelayoM. R., Ruiz MariscalI., Gil ExtremeraF. and BozaJ. 1997. The effect of different concentrations of protein and fat in milk replacers on protein utilization in kid goats. Animal Science 64: 485492.
SchneiderP., SklanD., ChalupaW. and KronfeldD. S. 1988. Feeding calcium salts of fatty acids to lactating cows. Journal of Dairy Science 71: 21432150.
ShellL. A., DrydenF. D., Mata-HernándezA. and HaleW. H. 1978. Protein protected fat for ruminants. III. Digestion and performance of lambs. Journal of Animal Science 46: 13321337.
Statgraphics. 1991. User manual: Statistical Graphics System by Statistical Graphics Corporation. Rock-Wille, MD.
SteelR. G. D. and TorrieJ. H. 1984. Principles and procedures of statistics: a biometrical approach, fourth edition. McGraw-Hill, Singapore.
SuW. and JonesP. J. H. 1993. Dietary fatty acid composition influences energy accretion in rats. Journal of Nutrition 123: 21092114.
SukhijaP. S. and PalmquistD. L. 1990. Dissociation of calcium soaps of long-chain fatty acids in rumen fluid. Journal of Dairy Science 73: 17841787.
Van SoestP. J., RobertsonJ. B. and LewisB. A. 1991. Methods for dietary fibre, neutral detergent fibre and non-starch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74: 35833597.
ZinnR. A., GulatiS. K., PlascenciaA. and SalinasA. 2000. Influence of ruminal biohydrogenation on the feeding value of fat in finishing diets for feedlot cattle. Journal of Animal Science 78: 17381746.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Animal Science
  • ISSN: 1357-7298
  • EISSN: 1748-748X
  • URL: /core/journals/animal-science
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 1 *
Loading metrics...

Abstract views

Total abstract views: 59 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 23rd October 2017. This data will be updated every 24 hours.