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Upgrading plant amino acids through cattle to improve the nutritional value for humans: effects of different production systems

  • M. Patel (a1), U. Sonesson (a2) and A. Hessle (a3)

Efficiency in animal protein production can be defined in different ways, for example the amount of human-digestible essential amino acids (HDEAA) in the feed ration relative to the amount of HDEAA in the animal products. Cattle production systems are characterised by great diversity and a wide variety of feeds and feed ration compositions, due to ruminants’ ability to digest fibrous materials inedible to humans such as roughage and by-products from the food and biofuel industries. This study examined the upgrading of protein quality through cattle by determining the quantity of HDEAA in feeds and animal products and comparing different milk and beef production systems. Four different systems for milk and beef production were designed, a reference production system for milk and beef representing typical Swedish production systems today and three alternative improved systems: (i) intensive cattle production based on maize silage, (ii) intensive systems based on food industry by-products for dairy cows and high-quality forage for beef cattle, and (iii) extensive systems based on forage with only small amounts of concentrate. In all four production systems, the quantity of HDEAA in the products (milk and meat) generally exceeded the quantity of HDEAA in the feeds. The intensive production models for beef calves generally resulted in output of the same magnitude as input for most HDEAA. However, in beef production based on calves from dairy cows, the intensive rearing systems resulted in lower output than input of HDEAA. For the extensive models, the amounts of HDEAA in meat were of the same magnitude as the amounts in the feeds. The extensive models with beef calves from suckler cows resulted in higher output in meat than input in feeds for all HDEAA. It was concluded that feeding cattle plants for production of milk and meat, instead of using the plants directly as human food, generally results in an upgrading of both the quantity and quality of protein, especially when extensive, forage-based production models are used. The results imply that the key to efficiency is the utilisation of human-inedible protein by cattle and justifies their contribution to food production, especially in regions where grasslands and/or forage production has comparative benefits over plant food production. By fine-tuning estimation of the efficiency of conversion from human-edible protein to HDEAA, comparisons of different sources of protein production may be more complete and the magnitude of amino acid upgrading in plants through cattle more obvious.

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Agriwise 2014. Regional enterprise budgets. Department of Economics, Swedish University of Agricultural Sciences, Uppsala, Sweden.
AguerreMJ, WattiauxMA, PowellJM, BroderickGA and ArndtC 2011. Effect of forage-to-concentrate ratio in dairy cow diets on emission of methane, carbon dioxide, and ammonia, lactation performance, and manure excretion. Journal of Dairy Science 94, 30813093.
AlvåsenK, MörkMJ, SandgrenCH, ThomsenPT and EmanuelsonU 2012. Herd-level risk factors associated with cow mortality in Swedish dairy herds. Journal of Dairy Science 95, 43524362.
BallRO, Courtney-MartinG and PencharzPB 2006. The in vivo sparing of methionine by cysteine in sulfur amino acid requirements in animal models and adult humans. Journal of Nutrition 136, 1682S1693S.
BerglundM, ClasonC, Bååth JacobssonS, Bergström NilssonS and SundV 2013. Klimatavtryck av insatsvaror i jordbruket – ungnöt, smågrisar, gyltor och strömedel. Rapport från Hushållningssällskapet Halland, Eldsberga, Sweden.
Carlsson-KanyamaA and GonzalezAD 2009. Potential contributions of food consumption patterns to climate change. American Journal of Clinical Nutrition 89, S1704S1709.
Council for Agricultural Science and Technology (CAST) 1999. Animal agriculture and global food supply. Task force report No. 135 July 1999, Department of Animal Science, University of California, Davis, CA, USA.
CVB Feed Table (ed.) 2011. Chemical compositions and nutritional values of feed materials. PDV, Zoetermeer, the Netherlands.
ErtlP, ZebeliQ, ZollitschW and KnausW 2015a. Feeding of by-products completely replaced cereals and pulses in dairy cows and enhanced edible feed conversion ratio. Journal of Dairy Science 98, 12251233.
ErtlP, KlockerH, HortenhuberS, KnausW and ZollitschW 2015b. The net contribution of dairy production to human food supply: the case of Austrian dairy farms. Agricultural Systems 137, 119125.
Food and Agriculture Organization of the United Nations (FAO) 2012. Report of a sub-committee of the 2011 FAO consultation on ‘protein quality evaluation in human nutrition’ on: The assessment of amino acid digestibility in foods for humans and including a collation of published ileal amino acid digestibility data for human foods, Appendix 1: true ileal amino acid and protein digestibility (%) for selected human foods. FAO, Rome, Italy.
Food and Agriculture Organization of the United Nations (FAO) 2013. Dietary protein quality evaluation in human nutrition. Report of an FAO expert consultation. FAO food and nutrition paper 92. FAO, Rome, Italy.
GeneticAUSTRIA 2015. Fleckvieh breed information. Retrieved on 20 March 2015 from
GonzalezAD, FrostellB and Carlsson-KanyamaA 2011. Protein efficiency per unit energy and per unit greenhouse gas emissions: potential contribution of diet choices to climate change mitigation. Food Policy 36, 562570.
HallströmE, Carlsson-KanyamaA and BörjessonP 2015. Environmental impact of dietary change: a systematic review. Journal of Cleaner Production 91, 111.
HanssonI 1989. Nötslaktkroppar sammansättning och egenskaper. En rapport baserad på styckningar utförda vid Avd. för köttvetenskap. Rapport 89. Department of Animal Breeding And Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden.
HessleA, NadeauE and SvenssonC 2004. Feeding dairy calves and replacement heifers in south-western Sweden: a survey. Acta Agriculturae Scandinavica Section A-Animal Science 54, 94102.
IhseM and NorderhaugA 1995. Biological values of the Nordic cultural landscape: different perspectives. International Journal of Heritage Studies 1, 156170.
JerrentrupJS, Wrage-MonnigN, RoverKU and IsselsteinJ 2014. Grazing intensity affects insect diversity via sward structure and heterogeneity in a long-term experiment. Journal of Applied Ecology 51, 968977.
KremenC and MilesA 2012. Ecosystem services in biologically diversified versus conventional farming systems: benefits, externalities, and trade-offs. Ecology and Society 17, 25.
MatthewsDE 2007. An overview of phenylalanine and tyrosine kinetics in humans. Journal of Nutrition 137, 1549S1575S.
MogensenL, KristensenT, NielsenNI, SplethP, HenrikssonM, SwenssonC, HessleA and VestergaardM 2015. Greenhouse gas emissions from beef production systems in Denmark and Sweden. Livestock Science 174, 126143.
OberliM, Marsset-BaglieriA, AirineiG, Sante-LhoutellierV, KhodorovaN, RemondD, Foucault-SimoninA, PiedcoqJ, TomeD, FromentinG, BenamouzigR and GaudichonC 2015. High true ileal digestibility but not postprandial utilization of nitrogen from bovine meat protein in humans is moderately decreased by high-temperature, long-duration cooking. Journal of Nutrition 145, 22212228.
PatelM 2012. Effects of increasing the proportion of high-quality grass silage in the diet of dairy cows. PhD thesis, Swedish University of Agricultural Sciences, Uppsala, Sweden.
RockströmJ, SteffenW, NooneK, PerssonA, ChapinFSIII, LambinEF, LentonTM, SchefferM, FolkeC, SchellnhuberHJ, NykvistB, de WitCA, HughesT, van der LeeuwS, RodheH, SorlinS, SnyderPK, CostanzaR, SvedinU, FalkenmarkM, KarlbergL, CorellRW, FabryVJ, HansenJ, WalkerB, LivermanD, RichardsonK, CrutzenP and FoleyJA 2009. A safe operating space for humanity. Nature 461, 472475.
RunemarkP 1983. Slakt, styckning och förädling av kött. In Stora köttboken (ed. A Lindberg), p. 62. Svensk kötthandel, Uddevalla, Sweden.
ScarboroughP, ApplebyPN, MizdrakA, BriggsADM, TravisRC, BradburyKE and KeyTJ 2014. Dietary greenhouse gas emissions of meat-eaters, fish-eaters, vegetarians and vegans in the UK. Climatic Change 125, 179192.
SoussanaJF, AllardV, PilegaardK, AmbusP, AmmanC, CampbellC, CeschiaE, Clifton-BrownJ, CzobelS, DominguesR, FlechardC, FuhrerJ, HensenA, HorvathL, JonesM, KasperG, MartinC, NagyZ, NeftelA, RaschiA, BarontiS, ReesRM, SkibaU, StefaniP, MancaG, SuttonM, TubafZ and ValentiniR 2007. Full accounting of the greenhouse gas (CO2, N2O, CH4) budget of nine European grassland sites. Agriculture Ecosystems & Environment 121, 121134.
SpörndlyR 2003. Fodertabeller för idisslare. Rapport 257. Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Statistics Sweden 2015. Agricultural statistics 2015 – including food statistics – tables. Retrieved on 15 October 2015 from
SteinfeldH, GerberP, WassenaarT, CastelV, RosalesM and HaanCd 2006. Livestock’s long shadow: environmental issues and options. Food and Agriculture Organization of the United Nations (FAO), Rome, Italy.
Swedish Board of Agriculture 2012. Nötkreaturssektorns uppbyggnad. Statistikrapport 2012:03. Jordbruksverket, Jönköping, Sweden.
Swedish Environmental Objectives Council 2008. Sweden’s environmental objectives - no time to loose (p. 198. Swedish Environmental Protection Agency, Stockholm, Sweden.
Taurus 2013. Slaktstatistik helår 2012. Retrieved on 15 October 2015 from In.
TorseinM, LindbergA, SandgrenCH, WallerKP, TörnquistM and SvenssonC 2011. Risk factors for calf mortality in large Swedish dairy herds. Preventive Veterinary Medicine 99, 136147.
United States Department of Agriculture (USDA) 2014. National nutrient database for standard reference, release 27 (revised). Retrieved on 5 May 2015 from
Växa Sverige 2014. Cattle Statistics. Retrieved on 2 December 2014 from
VoldenH (ed.) 2011. Norfor – the Nordic feed evaluation system (EAAP publication No. 130. Wageningen Academic Publishers, Wageningen, the Netherlands.
WilkinsonJM 2011. Re-defining efficiency of feed use by livestock. Animal 5, 10141022.
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