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  1. Article: Evaluating environmental and economic trade-offs in cattle feed strategies using multiobjective optimization

    Marques, J.G.O. / de Oliveira Silva, R. / Barioni, L.G. / Hall, J.A.J. / Fossaert, C. / Tedeschi, L.O. / Garcia-Launay, F. / Moran, D.

    Agricultural systems. 2022 Jan., v. 195

    2022  

    Abstract: Reducing livestock greenhouse gas (GHG) emissions is now central to sustainable agricultural production strategies. Feedlot systems are a significant part of the production process in many countries, and associated feeding plans can influence product ... ...

    Abstract Reducing livestock greenhouse gas (GHG) emissions is now central to sustainable agricultural production strategies. Feedlot systems are a significant part of the production process in many countries, and associated feeding plans can influence product emission intensity significantly. Feed formulation can be used to target several objectives including animal productive performance, direct emissions from enteric fermentation and manure decomposition, and pre-farm gate emissions associated with the feed life cycles.To explore the environmental and economic trade-offs in feed formulation for beef cattle using multiobjective optimization.We develop a multiobjective model to derive the efficient frontier between profit maximization and environmental impact minimization in diet formulation for beef cattle in a typical French feedlot system. The nonlinear profit function includes animal performance, animal selling price, and feeding costs. The environmental impact accounts for the feed ingredient life cycles (non-renewable energy consumption, phosphorus demand, soil acidification, soil eutrophication, climate change potential, and land requirement), and for methane and nitrous oxide emissions from enteric fermentation and manure decomposition. The model is solved using a combination of optimization methods and for two scenarios with different weights representing the environmental impacts: a low carbon scenario (minimizing only CO₂eq emissions), and a balanced impacts scenario (minimizing the sum of impacts with an arbitrary choice of weights derived from the literature).We show that optimal cost-effective mitigation arises from a combined strategy, concurrently: increasing animal performance by 20% and reducing daily emissions from the feed life cycle by 50% and from enteric fermentation and manure decomposition emissions by 43%. With this strategy, both scenarios present similar maximum GHG reduction in the feedlot phase – around 42% compared to the maximum-profit solution. The similar behaviour of both scenarios shows that environmental impact transference only occurs in more extreme solutions. Finally, about 50% of the total potential reduction can be achieved at a cost of 22 € / kg CO₂eq / kg CWE.Results suggest that significant GHG emissions reduction can be obtained solely from manipulating animal diets. Achieving these reductions cost-effectively derives from a combination of well-known strategies rather than focusing on any one individually.
    Keywords animal performance ; beef cattle ; carbon ; cattle feeds ; climate change ; cost effectiveness ; diet ; emissions factor ; environmental impact ; eutrophication ; feed composition ; feed formulation ; feedlots ; greenhouse gases ; methane ; models ; nitrous oxide ; nonrenewable resources ; phosphorus ; pollution control ; profit maximization ; rumen fermentation ; soil ; soil acidification ; sustainable agriculture
    Language English
    Dates of publication 2022-01
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 413255-5
    ISSN 0308-521X
    ISSN 0308-521X
    DOI 10.1016/j.agsy.2021.103308
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 3165: Show issues

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  2. Article ; Online: An improved algorithm for solving profit-maximizing cattle diet problems.

    Marques, J G O / de O Silva, R / Barioni, L G / Hall, J A J / Tedeschi, L O / Moran, D

    Animal : an international journal of animal bioscience

    2020  Volume 14, Issue S2, Page(s) s257–s266

    Abstract: Feeding cattle with on-pasture supplementation or feedlot diets can increase animal efficiency and system profitability while minimizing environmental impacts. However, cattle system profit margins are relatively small and nutrient supply accounts for ... ...

    Abstract Feeding cattle with on-pasture supplementation or feedlot diets can increase animal efficiency and system profitability while minimizing environmental impacts. However, cattle system profit margins are relatively small and nutrient supply accounts for most of the costs. This paper introduces a nonlinear profit-maximizing diet formulation problem for beef cattle based on well-established predictive equations. Nonlinearity in predictive equations for nutrient requirements poses methodological challenges in the application of optimization techniques. In contrast to other widely used diet formulation methods, we develop a mathematical model that guarantees an exact solution for maximum profit diet formulations. Our method can efficiently solve an often-impractical nonlinear problem by solving a finite number of linear problems, that is, linear time complexity is achieved through parametric linear programming. Results show the impacts of choosing different objective functions (minimizing cost, maximizing profit and maximizing profit per daily weight gain) and how this may lead to different optimal solutions. In targeting improved ration formulation on feedlot systems, this paper demonstrates how profitability and nutritional constraints can be met as an important part of a sustainable intensification production strategy.
    MeSH term(s) Algorithms ; Animal Feed ; Animals ; Cattle ; Cattle Diseases ; Diet/veterinary ; Environment ; Nutritional Requirements ; Weight Gain
    Language English
    Publishing date 2020-06-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2257920-5
    ISSN 1751-732X ; 1751-7311
    ISSN (online) 1751-732X
    ISSN 1751-7311
    DOI 10.1017/S1751731120001433
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 7718: Show issues

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  3. Article: The development of a dynamic, mechanistic, thermal balance model for Bos indicus and Bos taurus

    THOMPSON, V. A / BARIONI, L. G / RUMSEY, T. R / FADEL, J. G / SAINZ, R. D

    Journal of agricultural science. 2014 June, v. 152, no. 3

    2014  

    Abstract: The dynamic model presented in the current paper estimates heat production and heat flow between growing and mature cattle (Bos indicus and Bos taurus) and the surrounding environment. Heat production was calculated using the NRC (2000) and heat flows ... ...

    Abstract The dynamic model presented in the current paper estimates heat production and heat flow between growing and mature cattle (Bos indicus and Bos taurus) and the surrounding environment. Heat production was calculated using the NRC (2000) and heat flows between the animal and the environment were based largely on existing models and physical principles. Heat flows among the body core, the skin, the coat and the environment were calculated. Heat flows from and to the environment included solar radiation, long wave radiation, convection and evaporative heat loss. Physiological responses of cattle (sweating, panting and vasodilation) were modelled through mechanistic equations. The model required weather (radiation, temperature, wind and vapour pressure), animal (body-core weight and genotype-specific parameters) and dietary inputs (dry matter intake rates and diet composition) and estimated heat balance and the physiological responses of the animal to within-day weather variation. The current paper has focused on heat stress, although the model was designed to run under both hot and cold climatic conditions. The model developed in the current paper provides researchers and livestock producers with the ability to predict heat stress and to evaluate mitigating procedures.
    Keywords breathing ; cattle ; climatic factors ; cold ; diet ; dry matter intake ; dynamic models ; equations ; heat production ; heat stress ; physical models ; physiological response ; solar radiation ; sweating ; temperature ; vapor pressure ; vasodilation ; wind ; zebu
    Language English
    Dates of publication 2014-06
    Size p. 464-482.
    Publishing place Cambridge University Press
    Document type Article
    ZDB-ID 1498349-7
    ISSN 1469-5146 ; 0021-8596
    ISSN (online) 1469-5146
    ISSN 0021-8596
    DOI 10.1017/S002185961300049X
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  4. Article: Increasing beef production could lower greenhouse gas emissions in Brazil if decoupled from deforestation

    de Oliveira Silva, R. / Barioni, L. G. / Hall, J. A. J. / Folegatti Matsuura, M. / Zanett Albertini, T. / Fernandes, F. A. / Moran, D.

    Nature climate change

    2016  Volume 6, Issue 5, Page(s) 493

    Language English
    Document type Article
    ZDB-ID 2614383-5
    ISSN 1758-678x
    Database Current Contents Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Z 7874: Show issues

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  5. Article: Comparative analysis of two dynamic mechanistic models of beef cattle growth

    Garcia, F / Sainz, R.D / Agabriel, J / Barioni, L.G / Oltjen, J.W

    Animal feed science and technology. 2008 May 22, v. 143, no. 1-4

    2008  

    Abstract: The INRA Growth Model (IGM) and the Davis Growth Model (DGM) are two dynamic mechanistic models developed to predict protein and fat deposition in growing cattle whatever the production system. Both models depend on animal genotype and age, metabolizable ...

    Abstract The INRA Growth Model (IGM) and the Davis Growth Model (DGM) are two dynamic mechanistic models developed to predict protein and fat deposition in growing cattle whatever the production system. Both models depend on animal genotype and age, metabolizable energy intake (MEI) and knowledge of previous growth. The aim of this paper was (i) to identify in which situations DGM and/or IGM provide reliable estimations of body protein and fat, (ii) to give insight on the improvements needed in each model and (iii) to discuss the usefulness of comparative analysis for improvement of mechanistic models. We performed a comparative analysis of DGM and IGM with three datasets from published experiments on Salers heifers, Angus-Hereford steers and Charolais bulls. Each model was fitted independently to each dataset. Both models gave accurate and precise predictions of body protein. They also performed well for body fat in Charolais bulls growing continuously. However, DGM tended to underestimate body fat deposition during feeding restriction periods with Salers heifers. This suggests that DGM overestimated heat production during periods of low MEI. IGM was not sensitive enough to MEI as it overestimates body fat at low MEI and it underestimates body fat at high MEI in Angus-Hereford steers. Presently, IGM does not take into account metabolizable energy concentration (MEC) of the diet and thus does not simulate different growth trajectories for same MEI but different MEC. These results suggest that model's structure and equations for protein accretion in DGM and IGM are valid. Future improvements will focus on prediction of heat production during feed restriction periods for DGM and on mathematical formulation of feed energy utilisation for fat synthesis in IGM in order to improve model sensitivity to MEI. Comparative analysis provides meaningful information on the models behaviour for further improvement of processes simulations.
    Keywords mathematical models ; ruminant nutrition ; mechanistic models ; beef cattle ; animal growth ; growth models ; cattle feeding ; genotype ; age ; metabolizable energy ; energy intake ; body fat
    Language English
    Dates of publication 2008-0522
    Size p. 220-241.
    Publishing place [New York, NY]: Elsevier Science
    Document type Article
    Note In the special issue: Mathematical models that predict the effects of feed characteristics on animal performance / edited by E. Evans, D. Sauvant, and P. Uden.
    ZDB-ID 196563-3
    ISSN 0377-8401
    ISSN 0377-8401
    DOI 10.1016/j.anifeedsci.2007.05.012
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 2931: Show issues

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  6. Article ; Conference proceedings ; Online: Effect of improving Diet Quality by Feeding Supplements on Methane Emission in different Production Systems of Beef Cattle in Brazil

    Geraldo De Lima, J. / Bannink, A. / Van Den Pol - Van Dasselaar, A. / Barioni, L.G. / Menezes Santos, P.

    Livestock, Climate Change and Food security, conference abstract book

    2014  

    Abstract: In Brazil, the national inventories on methane emission are carried out using the Tier 2 approach published by the Intergovernmental Panel on Climate Change (IPCC). Although, IPCC recommends the use of a more specific Tier 3 approach, this is hampered by ...

    Abstract In Brazil, the national inventories on methane emission are carried out using the Tier 2 approach published by the Intergovernmental Panel on Climate Change (IPCC). Although, IPCC recommends the use of a more specific Tier 3 approach, this is hampered by a lack of consolidated data for development, evaluation and application of such a Tier 3 approach. The purpose of this study was to estimate the effect of improving diet quality by feeding supplements on methane emission, calculated by both a Tier 2 and an extant Tier 3 approach, in different production systems of beef cattle in Brazil: (1) high quality diet and feedlot feeding from weaning to slaughter- FSFF - Feedlot finishing (14 mth); (2) energy and protein supplementation - ESPF - Pasture finishing (20 mth); (3) protein supplementation during dry and wet season - PSFF - Feedlot finishing (24 mth); (4) protein supplementation dry at first and second dry seasons combined with ad libitum mineral salt supplementation and protein supplementation wet at first and second wet season, respectively- PSPF - Pasture finishing (30 mth); (5) urea supplementation with mineral salt during the dry season and ad libitum salt during the wet season - USFF - Feedlot finishing (36 mth); (6) urea salt during the dry season and ad libitum mineral salt during the wet season - USPF - Pasture finishing (44 mth). Tier 2 and Tier 3 approaches estimated a profound effect of supplementation on methane emission. Tier 2 estimates ranged from 168 (USPF) to 35 kg per animal (FSFF) while Tier 3 estimates ranged from 145 (USPF) to 32 (FSFF) kg per animal. Using a Tier 3 approach for Brazilian conditions led to lower predictions of enteric methane compared to the IPCC Tier 2 approach. This study is part of the FP7 AnimalChange project (Grant Agreement 266018) and co-financed by the Dutch Ministry of Economic Affairs (KB-12-006.04-003). The first author also acknowledges the financial support of the Capes (Cordena¸c˜ao de Aperfei¸coamento de Pessoal de N´ivel Superior) for granting a graduate ...
    Keywords Life Science
    Subject code 630
    Language English
    Publishing country nl
    Document type Article ; Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Technical Summary

    Shukla, P.R. / Skea, J. / Slade, R. / van Diemen, R. / Haughey, E. / Malley, J. / Pathak, M. / Pereira, J.P. / Agus, F. / Arneth, A. / Artaxo Netto, P.E. / Barbosa, H. / Barioni, L.G. / Benton, T. / Bhadwal, S. / Calvin, K. / Calvo, E. / Campbell, D. / Cherubini, F. /
    Connors, S. / Cowie, A. / Davin, E. / Delusca, K. / Denton, F. / Elbehri, A. / Erb, K. / Evans, J. / Flores-Renteria, D. / Garcia-Oliva, F. / Grassi, G. / Hermans, K. / Herrero, M. / Houghton, R. / House, J. / Howden, M. / Hurlbert, M. / Hussein, I.A.G. / Iqbal, M.M. / Jia, G. / Jobbagy, E. / Johnson, F.X. / Kimutai, J. / Kitajima, K. / Knowles, T. / Korotkov, V. / Krishnapillai, M.V. / Krishnaswamy, J. / Kurz, W. / Le Hoang, A. / Lennard, C. / Li, D. / Liwenga, E. / Lwasa, S. / Mahmoud, N. / Masson-Delmotte, V. / Mbow, C. / McElwee, P. / Mena, C.F. / Meza, F. / Mirzabaev, A. / Morton, J. / Moufouma, W. / Myeong, S. / Nedjraoui, D. / Nkem, J. / Nkonya, E. / De Noblet-Ducoudre, N. / Olsson, L. / Osman-Elasha, B. / Petzold, J. / Pichs-Madruga, R. / Poloczanska, E. / Popp, A. / Pörtner, H-O. / Pradhan, P. / Rahimi, M. / Reisinger, A. / Rivera-Ferre, M.G. / Roberts, D.C. / Rosenzweig, C. / Rounsevell, M. / Saigusa, N. / Sapkota, T. / Shevliakova, E. / Sirin, A. / Smith, P. / Sokona, Y. / Sonwa, D.J. / Sousasana, J-F. / Spence, A. / Stringer, L. / Sukumar, R. / Taboada, M.A. / Tena, F. / Tubiello, F. / Türkes, M. / Valentini, R. / Vazquez Montenegro, R.J. / Verchot, L.V. / Viner, D. / Warner, K. / Weltz, M. / Weyer, N.M. / Wreford, A. / Wu, J. / Yassa, N. / Zakieldeen, S. / Zhai, P. / Zommers, Z.

    2021  

    Keywords climate change ; land management ; degradation
    Language English
    Publishing date 2021-03-08T09:02:30Z
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article: Evolution studies from embryo transfer and in vitro fertilization in Nelore cattle at Brazil

    BELTRAME, R. T. / QUIRINO, C. R. / BARIONI, L. G.

    Boletim de Indústria Animal

    Abstract: Data from Brazilian Association of Zebu Breeders were used to show the evolution of conventional embryo transfer (ET) and in vitro fertilization techniques between 1997 and 2007 for the Nelore cattle in Brazil. Data from 109.775 conventional embryo ... ...

    Abstract Data from Brazilian Association of Zebu Breeders were used to show the evolution of conventional embryo transfer (ET) and in vitro fertilization techniques between 1997 and 2007 for the Nelore cattle in Brazil. Data from 109.775 conventional embryo transfer and 73.121 ovum pick-up (OPU) were used. The embryo transfer supremacy was observed until 2004 when a considerable increase of OPU number over ET occurred. More ET and OPU were carried out in Southeast and Mid-West than in others Brazilian regions. The average number of viable embryo along the analysis period is close to that reported by literature (between 5 and 7 embryos per flushing or OPU session).
    Keywords Databases ; History ; Embryology ; Biotechnology
    Language Portuguese
    Document type Article
    ISSN 0067-9615
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  9. Article: Estudo da evolução das biotécnicas de Transferência de Embriões e Fertilização in vitro na raça Nelore no Brasil

    BELTRAME, R. T. / QUIRINO, C. R. / BARIONI, L. G.

    Boletim de Indústria Animal

    Abstract: Data from Brazilian Association of Zebu Breeders were used to show the evolution of conventional embryo transfer (ET) and in vitro fertilization techniques between 1997 and 2007 for the Nelore cattle in Brazil. Data from 109.775 conventional embryo ... ...

    Abstract Data from Brazilian Association of Zebu Breeders were used to show the evolution of conventional embryo transfer (ET) and in vitro fertilization techniques between 1997 and 2007 for the Nelore cattle in Brazil. Data from 109.775 conventional embryo transfer and 73.121 ovum pick-up (OPU) were used. The embryo transfer supremacy was observed until 2004 when a considerable increase of OPU number over ET occurred. More ET and OPU were carried out in Southeast and Mid-West than in others Brazilian regions. The average number of viable embryo along the analysis period is close to that reported by literature (between 5 and 7 embryos per flushing or OPU session).
    Keywords Databases ; History ; Embryology ; Biotechnology
    Language Portuguese
    Document type Article
    ISSN 0067-9615
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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