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Comparison of energy and protein sources offered at low levels in grass-silage-based diets for dairy cows

Published online by Cambridge University Press:  18 August 2016

R. J. Dewhurst ,
K. Aston ,
W. J. Fisher ,
R. T. Evans ,
M. S. Dhanoa  and
A. B. McAllan
R. J. Dewhurst
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB
K. Aston
Affiliation:
Institute of Grassland and Environmental Research, Trawsgoed Research Farm, Trawsgoed, Ceredigion SY23 4LL
W. J. Fisher
Affiliation:
Institute of Grassland and Environmental Research, Trawsgoed Research Farm, Trawsgoed, Ceredigion SY23 4LL
R. T. Evans
Affiliation:
Institute of Grassland and Environmental Research, Trawsgoed Research Farm, Trawsgoed, Ceredigion SY23 4LL
M. S. Dhanoa
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB
A. B. McAllan
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB
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Abstract

Four dietary treatments were based on a flat-rate (5 kg/day) of concentrates with ad libitum grass silage. The concentrates were iso-energetic and iso-nitrogenous, based on either barley or unmolassed sugar-beet pulp and either extracted rapeseed meal (RSM) or a 1: 3 mixture of fish and soya-bean meals (F/S). These diets were offered to 61 multiparous Holstein-Friesian cows in a continuous design experiment from lactation weeks 4 to 22. Milk yields tended to he higher with RSM (25·1 v. 23·9 kg/day; s.e.d. = 0·64; P < 0·1), whilst milk fat (38·1 v. 40·0 g/kg; s.e.d. = 0·81) and milk protein (30·4 v. 31·3 g/kg; s.e.d. = 0·41) concentrations were significantly (P < 0·05) lower. There were no significant effects of treatments on the efficiency of conversion of food-nitrogen (N) to milk-N or on N-retention. A lower organic matter apparent digestibility (g/g) was found for RSM-based diets (0·738 v. 0·763; s.e.d. = 0·0096; P < 0·05). The diets were also offered to four fistulated dairy cows in a Latin-square-design experiment. Concentrate energy source had significant effects on rumen pH (P < 0·05) and ammonia-N concentration (P < 0·01), whilst protein sources had no effect; values were always in the optimal range (pH > 6 and ammonia-N > 50 mg/l). There was a significant interaction effect (P < 0·05) such that the N-degradability of the whole diet, estimated in vivo, was unaffected by energy source for RSM-based diets but highly dependent on energy source for FIS diets. Microbial protein yield was reduced on the RSM-based diets (179 v. 220 g/day; s.e.d. = 9·6; P < 0·001).

Keywords

dairy cowsenergy intakegrass silagemilk productionprotein intakerapeseed oil-meal
Type
Research Article
Information
Animal Science , Volume 68 , Issue 4 , June 1999 , pp. 789 - 799
Copyright
Copyright © British Society of Animal Science 1999

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References

Agricultural and Food Research Council. 1992. Technical Committee on Responses to Nutrients. Report no. 9. Nutritive requirements of ruminant animals: protein. Nutrition Abstracts and Reviews, Series В 62: 787–835.Google Scholar
Agricultural Research Council. 1980. The nutrient requirements of ruminant livestock. Commonwealth Agricultural Bureaux, Slough, UK.Google Scholar
Aston, K., Fisher, W. J., McAllan, A.B., Dhanoa, M. S. and Dewhurst, R. J. 1998. Supplementation of grass silage-based diets with small quantities of concentrates: stategies for allocating concentrate crude protein. Animal Science 67: 17–26.CrossRefGoogle Scholar
Aston, K., Sutton, J. D. and Fisher, W. J. 1995. Milk production from grass silage diets: strategies for concentrate allocation. Animal Science 61: 465–480.Google Scholar
Aston, K., Thomas, C., Daley, S.R. and Sutton, J.D. 1994. Milk production from grass silage: effects of the composition of supplementary concentrates. Animal Production 59: 335–344.Google Scholar
Bartram, C. G. 1987. The endogenous protein content of ruminant proximal duodenal digesta Ph.D. thesis, University of Nottingham. Google Scholar
Castle, M. E. and Watson, J. N. 1976. Silage and milk production: a comparison between barley and groundnut cake as supplements to silage of high digestibility. Journal of the British Grassland Society 31: 191–195.Google Scholar
Chikunya, S., Newbold, C. J., Rode, L., Chen, X. B. and Wallace, R. J. 1996. Influence of dietary rumen-degradable protein on bacterial growth in the rumen of sheep receiving different energy sources. Animal Feed Science and Technology 63: 333–340.Google Scholar
Cozzi, G., Bittante, G. and Polan, C.E. 1993. Comparison of fibrous materials as modifiers of in situ ruminai degradation of corn gluten meal. Journal of Dairy Science 76: 1106–1113.Google Scholar
Davies, O. D. 1992. The effects of protein and energy content of compound supplements offered at low levels to October-calving dairy cows given grass silage ad libitum. Animal Production 55: 169–175.Google Scholar
Dewar, W. A. and McDonald, P. 1961. Determination of dry matter in silage by distillation with toluene. Journal of the Science of Food and Agriculture 12: 790–795.Google Scholar
Emmanuelson, M., Ahlin, K.-Å. and Wiktorsson, H. 1993. Long-term feeding of rapeseed meal and full-fat rapeseed of double low cultivars to dairy cows. Livestock Production Science 33: 199–214.Google Scholar
Evans, R. T., Skelton, K. V. and Beever, D.E. 1981. Portable equipment for the automatic sampling of duodenal contents from housed or grazing cattle. Laboratory Practice 30: 997–1000.Google Scholar
Faichney, G. J. 1975. The use of markers to partition digestion within the gastrointestinal tract of ruminants. In Digestion and metabolism in the ruminant (ed. McDonald, I.W. and Warner, A.C.I.), pp. 277–291. University of New England, Armidale, Australia.Google Scholar
Fussell, R. J. and McCalley, D.V. 1987. Determination of volatile fatty acids (C2-C5) and lactic acid in silages by gas chromatography. Analyst 112:1213–1216.Google Scholar
Huhtanen, P. and Heikkilä, T. 1996. Effects of physical treatment of barley and rapeseed meal in dairy cows given grass silage-based diets. Agriculture and Food Science in Finland 5: 399–412.Google Scholar
Huhtanen, P., Jaakkola, S. and Saarisalo, E. 1995. The effects of concentrate energy source on the milk production of dairy cows given a grass silage-based diet. Animal Science 60: 31–40.Google Scholar
Jacobs, J. L., Haines, M. J. and McAllan, A. B. 1992. The effects of different protein supplements on the utilization of untreated, formic acid-treated or enzyme-treated silages by growing steers. Grass and Forage Science 47: 121–127.Google Scholar
Jacobs, J. L. and McAllan, A. B. 1992. Protein supplementation of formic acid- and enzyme-treated silages. 1. Digestibilities, organic matter and fibre digestion. Grass and Forage Science 47: 103–111.Google Scholar
Lawes Agricultural Trust. 1995. Genstat 5 reference manual. Clarendon Press, Oxford.Google Scholar
Lees, J. A., Oldham, J. D., Haresign, W. and Garnsworthy, P. C. 1990. The effects of patterns of rumen fermentation on the response by dairy cows to dietary protein concentration. British journal of Nutrition 63: 177–186.CrossRefGoogle ScholarPubMed
Merry, R. J., Smith, R. H. and McAllan, A. B. 1987. Studies of rumen function in an in vitro continuous culture system. Archives of Animal Nutrition, Berlin 37: 475–488.Google Scholar
Ministry of Agriculture, Fisheries and Food. 1992. Prediction of energy value of compound feedingstuffs for farm animals. Summary of recommendations of a working party sponsored by the Ministry of Agriculture, Fisheries and Food. Her Majesty’s Stationery Office, London.Google Scholar
Mulvany, P. 1977. Dairy cow condition scoring. National Institute for Research in Dairying paper no. 4468. NIRD, Shinfield, Reading.Google Scholar
Oldham, J. D. 1984. Protein-energy interelationships in dairy cows. Journal of Dairy Science 67: 1090–1114.Google Scholar
Petit, H. and Tremblay, G. F. 1995. Ruminal fermentation and digestion in lactating cows fed grass silage with protein and energy supplements. Journal of Dairy Science 78: 342–352.Google Scholar
Plaisance, R., Petit, H. V., Seoane, J. R. and Rioux, R. 1997. The nutritive value of canola, heat-treated canola and fish meals as protein supplements for lambs fed grass silage. Animal Feed Science and Technology 68: 139–152.Google Scholar
Rae, R.C., Golightly, A. J. and Marshall, D. R. 1986. The effect of fish meal and soya-bean meal supplements on milk production of autumn-calving cows given ad libitum access to ryegrass silage. Animal Production 42: 435 (abstr.).Google Scholar
Rowland, S.J. 1938. The protein distribution in normal and abnormal milk. Journal of Dairy Research 9: 47–57.Google Scholar
Satter, L. D. and Slyter, L. L. 1974. Effect of ammonia concentration on rumen microbial protein production in vitro. British Journal of Nutrition 32: 199–208.Google Scholar
Schelling, G. T., Koenig, S. E. and Jackson, T.C. Jr. 1982. Nucleic acids and purine or pyrimidine bases as markers for protein synthesis in the rumen. In Protein requirements for cattle: symposium (ed. Owens, F. N.), pp. 1–9. Oklahoma State University, Stillwater, USA.Google Scholar
Scott, R. W. 1979. Colorimetrie determination of hexuronic acids in plant materials. Analytical Chemistry 51: 936–941.Google Scholar
Siddons, R.C., Beever, D.E. and Nolan, J.V. 1982. A comparison of methods for the estimation of microbial nitrogen in duodenal digesta of sheep. British Journal of Nutrition 48: 377–389.Google Scholar
Siddons, R.C., Paradine, J., Beever, D. E. and Cornell, P. R. 1985. Ytterbium acetate as a particulate-phase digesta-flow marker. British Journal of Nutrition 54: 509–519.Google Scholar
Sutton, J. D., Aston, K., Beever, D. E. and Fisher, W.J. 1994. Milk production from grass silage diets: the relative importance of the amounts of energy and crude protein in the concentrates. Animal Production 59: 327–334.Google Scholar
Tamminga, S. 1993. Influence of feeding management on ruminant fiber digestibility. In Forage cell wall structure and digestibility (ed. Jung, H.G., Buxton, D.R., Hatfield, R.D. and Ralph, J.), pp. 571–602. ASAS/CSSA/SSA, Madison, Wisconsin, USA.Google Scholar
Thomas, C.. 1987. Factors affecting substitution rates in dairy cows on silage-based rations. In Recent advances in animal nutrition — 1987 (ed. Haresign, W.), pp. 205–218. Butterworths, London.CrossRefGoogle Scholar
Thomas, C., Aston, K., Daley, S.R. and Bass, J. 1986. Milk production from silage. 4. The effect of the composition of the supplement. Animal Production 42: 315–325.Google Scholar
Tuori, M. 1992. F.apeseed meal as a supplementary protein for dairy cows on grass silage-based diets, with the emphasis on the Nordic AAT-PBV feed protein evaluation system. Agricultural Science in Finland 1: 376–429.Google Scholar
Van Soest, P. J., Robertson, J. B. and Lewis, B. A. 1991. Methods for dietary fiber, neutral detergent fiber and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74: 3568–3597.Google Scholar
Van Soest, P. J. and Wine, R. H. 1967. Use of detergents in the analysis of fibrous feeds. IV. Determination of plant cell wall constituents. Journal of the Association of Official Analytical Chemists 50: 50–55.Google Scholar
Visser, H.de, Huisert, H. and Ketelaar, R.S. 1991. Dried beet pulp, pressed beet pulp and maize silage as substitutes for concentrates in dairy cow rations. 2. Feed intake, fermentation pattern and ruminai degradation characteristics. Netherlands Journal of Agricultural Science 39: 21–30.Google Scholar
Williams, C. H., David, D. J. and Iisma, O. 1962. The determination of chromic oxide in faeces by atomic absorption spectrophotometry. Journal of Agricultural Science, Cambridge 59: 381–385.Google Scholar
Yilala, K. and Bryant, M. J. 1985. The effects upon the intake and performance of store lambs of supplementing grass silage with barley, fish meal and rapeseed meal. Animal Production 40: 111–121.Google Scholar