scholarly journals The Conceptualization and Preliminary Evaluation of a Dynamic, Mechanistic Mathematical Model to Assess the Water Footprint of Beef Cattle Production

2020 ◽  
Author(s):  
Hector M. Menendez ◽  
Alberto S. Atzori ◽  
Luis O. Tedeschi
Keyword(s):  
Beef Cattle ◽  
Water Use ◽  
Water Footprint ◽  
Mechanistic Modeling ◽  
Preliminary Evaluation ◽  
Cattle Population ◽  
Cattle Production ◽  
Modeling Framework ◽  
Footprint Model ◽  
Beef Cattle Production

AbstractThe water footprint assessment method has helped to bring livestock water use to the forefront of research to address water challenges under the ecological footprint perspective. The current assessment methods of water use make a meaningful assessment of livestock water use difficult as they are mainly static, thus poorly adaptable to understand future scenarios of water use and requirements. They lack the integration of fundamental ruminant nutrition and growth equations within a dynamic context that accounts for short and long-term behavior and time delays associated with economically important beef producing areas. This study utilized the System Dynamics methodology to conceptualize a water footprint for ruminants within a dynamic and mechanistic modeling framework. The problem of beef cattle livestock water footprint assessment was articulated, and a dynamic hypothesis was formed to represent the Texas livestock water use system as the initial step in developing the Texas Beef Water Footprint model (TXWFB). The fulfillment of the dynamic hypothesis required the development of three causal loop diagrams (CLD): cattle population, growth and nutrition, and the livestock water footprint. The CLD provided a framework that captured the daily water footprint of beef (WFB) of the cow-calf, stocker, and feedlot phases and the entire beef supply chain. Preliminary simulations captured the oscillatory behavior of the Texas cattle population and overshoot and collapse behavior, under conditions when regional livestock water resources became scarce. Sensitivity analysis from the hypothesized CLD structures indicated that forage quality was less of an impact on the daily WFB of each cattle phase compared to the use of high concentrate feeds. This study provided a framework concept for the development of a dynamic water footprint model for Texan’s beef cattle production and water sustainability.

scholarly journals An Evaluation of Historical Trends in New Mexico Beef Cattle Production in Relation to Climate and Energy

2019 ◽  
Vol 11 (23) ◽  
pp. 6840 ◽  
Author(s):  
Ashraf Zaied ◽  
Hatim Geli ◽  
Jerry Holechek ◽  
Andres Cibils ◽  
Mohammed Sawalhah ◽  
...  
Keyword(s):  
New Mexico ◽  
Beef Cattle ◽  
Crude Oil ◽  
Production Systems ◽  
Oil Production ◽  
Mean Annual Temperature ◽  
Cattle Population ◽  
Cattle Production ◽  
Crude Oil Production ◽  
Beef Cattle Production

In support of Food-Energy-Water Systems (FEWS) analysis to enhance its sustainability for New Mexico (NM), this study evaluated observed trends in beef cattle population in response to environmental and economic changes. The specific goal was to provide an improved understanding of the behavior of NM’s beef cattle production systems relative to precipitation, temperature, rangeland conditions, production of hay and crude oil, and prices of hay and crude oil. Historical data of all variables were available for the 1973–2017 period. The analysis was conducted using generalized autoregressive conditional heteroscedasticity models. The results indicated declining trends in beef cattle population and prices. The most important predictors of beef cattle population variation were hay production, mean annual hay prices, and mean annual temperature, whereas mean annual temperature, cattle feed sold, and crude oil production were the most important predictors for calf population that weigh under 500 lb. Prices of beef cattle showed a strong positive relationship with crude oil production, mean annual hay prices, rangeland conditions, and mean annual precipitation. However, mean annual temperature had a negative relationship with mean annual beef prices. Variation in mean annual calf prices was explained by hay production, mean annual temperature, and crude oil production. This analysis suggested that NM’s beef cattle production systems were affected mainly and directly by mean annual temperature and crude oil production, and to a lesser extent by other factors studied in this research.

scholarly journals 144 A modeling framework to assess the impact of the texas beef cattle water footprint on livestock sustainability

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 147-147
Author(s):  
Hector M Menendez ◽  
Benjamin L Turner ◽  
Luis O Tedeschi
Keyword(s):  
Beef Cattle ◽  
Water Use ◽  
Evaluation System ◽  
Crop Production ◽  
Water Footprint ◽  
Phase Region ◽  
Beef Production ◽  
Modeling Framework ◽  
Wide Range ◽  
The Impact

Abstract Anticipated growth in the demand for beef products driven by increased protein consumption, brings into question the efficiency, sustainability, profitability, and social dimensions of water use for U.S. beef production. Current assessment of U.S. beef production provides a wide range (695 to 14,191 L H2O/kg) of water footprint (WF) measurements of green (rainfed), blue (ground or surface), and grey (waste treatment) water use, but lacks defined region-specific estimates. The objective of this ongoing study is to develop a dynamic mathematical model for Texas beef cattle WF (TXWFB) that allows users to estimate a Texas WF, evaluate assumptions and parameters of current WF methodologies, identify water-use inefficiencies, and provide policy recommendations for a sustainable WF. The TXWFB was developed using Vensim DSS™ and evaluated with the Model Evaluation System™. The TXWFB model correctly replicated the previously published Chapagain and Hoekstra (2003; CH2003) water footprint results for beef cattle with a 36-month lifespan in both grazing [11,915 m3/t (0.4 t)] and industrial beef cattle [9636 m3/t (0.545 t)] systems. Then, parameters (diet composition and water footprints) from the CH2003 model were used as inputs into the TXWFB model to develop baseline scenarios for Texas, using ten climate regions (36-month lifespan; baseline grazing µ = 26,389 m3/t and industrial µ = 24,615 m3/t). The baseline results were then compared to grazing and industrial scenarios with regionalized Texas parameters for pasture, forage, and crop production (evapotranspiration, drought), diet/phase/region (cow-calf, stocker, and feedlot; 24 months). The TXWFB predictions for regional grazing (µ = 7,591 m3/t) and industrial (µ = 5,948 m3/t) results were 71 to 75% less than the baseline scenarios (P < 0.05). We concluded that the TXWFB estimates were considerably smaller than those previously published, suggesting that current WF methodologies can be refined to more adequately assess beef cattle WF in the US.

scholarly journals ANALISIS NERACA PASOKAN DAN KEBUTUHANSAPI DAN DAGING SAPI DI JAWA BARAT

2018 ◽  
Vol 4 (2) ◽  
pp. 98
Author(s):  
Achmad Firman ◽  
Mumun M Sulaeman ◽  
Linda Herlina ◽  
Marina Sulistyati
Keyword(s):  
Beef Cattle ◽  
Quantitative Method ◽  
Supply And Demand ◽  
Secondary Data ◽  
Cattle Population ◽  
Cattle Production ◽  
West Java ◽  
Beef Cattle Production ◽  
Beef Prices

Cattle and beef commodities have become a political commodity because the increase in beef prices has been responded significantly by both legislative and executive institutions. West Java became one of the provinces categorized as the area of beef consumption because the needs of cattle and beef cannot be supplied by local cattle in West Java. Lack of beef cattle is supplied from outside the province or abroad. This study aims to see the amount of cattle and beef cattle production to West Java, the number of cattle and beef cattleneeds in West Java, as well as the balance between supply and demand of beef and beefcattle in West Java. This research used quantitative method with secondary data as its base of analysis. The results showed that the number of cattle production calculated from the number of cattle population, the production of calf, the amount of imported cattle from outside the province or abroad. In 2015, the number of West Java cattle population amounted to 425,486 heads, 60,990 calves, 219,226heads of imported cattle. The amount of beef cattle production can reach 75,477,941 kg. The total requirement of cattle and beef cattle in West Java was 408,881 heads  and 84,733,150 kg. Based on data of supply and requirement of beef cattle could be calculated balance of cattle beef in West Java. The balance of beefcattle in West Java had a deficit meat during 2011-2015.Keywords: Production, Supply, Consumption, Balance, Beef Cattle

Environmental impacts of Brazilian beef cattle production in the Amazon, Cerrado, Pampa, and Pantanal biomes

2021 ◽  
pp. 127750
Author(s):  
Milene Dick ◽  
Marcelo Abreu da Silva ◽  
Rickiel Rodrigues Franklin da Silva ◽  
Otoniel Geter Lauz Ferreira ◽  
Manoel de Souza Maia ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Environmental Impacts ◽  
Cattle Production ◽  
Beef Cattle Production

Identification of breeding objectives using a bioeconomic model for a beef cattle production system in Uruguay

2014 ◽  
Vol 160 ◽  
pp. 21-28 ◽  
Author(s):  
Maria Isabel Pravia ◽  
Olga Ravagnolo ◽  
Jorge Ignacio Urioste ◽  
Dorian J. Garrick
Keyword(s):  
Beef Cattle ◽  
Production System ◽  
Bioeconomic Model ◽  
Cattle Production ◽  
Breeding Objectives ◽  
Beef Cattle Production

Bioeconomic simulation of Rhipicephalus microplus infestation in different beef cattle production systems in the Brazilian Cerrado

2021 ◽  
Vol 194 ◽  
pp. 103247
Author(s):  
Maria Paula Cavuto Abrão Calvano ◽  
Ricardo Carneiro Brumatti ◽  
Jacqueline Cavalcante Barros ◽  
Marcos Valério Garcia ◽  
Kauê Rodriguez Martins ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Production Systems ◽  
Rhipicephalus Microplus ◽  
Brazilian Cerrado ◽  
Cattle Production ◽  
Beef Cattle Production
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