Dataset Information

Assessing the sustainable development and intensification potential of beef cattle production in Sumbawa, Indonesia, using a system dynamics approach.

ABSTRACT: The intensification of beef cattle production in dryland areas of East Indonesia has the potential to substantially raise the incomes of smallholder farmers that dominate the sector. In this study we assess the potential for intensifying beef production on Sumbawa Island, by introducing a household feedlot production system (2-20 animals) based on the Leucaena leucocephala (leucanea) tree legume as an improved source of feed. We used a system dynamics approach to model the entire value chain, accounting for herd dynamics, demand dynamics and seasonality. Our findings complement the growing body of biophysical evidence about the potential success of this intervention, by simulating improvements in the annual profitability for beef farmers in the project area of up to 415% by 2023. Increases in farm profit were shown to depend near equally on the higher productivity of the leucaena feeding system and an associated price premium, demonstrating the importance of supporting improved agricultural production with better marketing practices. The intervention was also shown to generate positive or neutral benefits for the main post-farm value chain actors. Importantly, it also reduced the GHG emission intensity of outputs from the beef herd by 16% by 2020. We explored number of scale-out pathways, including a relatively moderate pace of autonomous adoption for our main analysis, resulting in the accumulation of 3,444 hectares of leucaena 20-years after the initial project phase, which could sustain the fattening of 37,124 male cattle per year. More ambitious rates of scale-out were found to be possible without exceeding the animal and land resources of the island.

SUBMITTER: Dahlanuddin

PROVIDER: S-EPMC5560717 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Assessing the sustainable development and intensification potential of beef cattle production in Sumbawa, Indonesia, using a system dynamics approach.

Dahlanuddin Dahlanuddin Henderson Benjamin B Dizyee Kanar K Hermansyah Ash Andrew A

PloS one 20170817 8

The intensification of beef cattle production in dryland areas of East Indonesia has the potential to substantially raise the incomes of smallholder farmers that dominate the sector. In this study we assess the potential for intensifying beef production on Sumbawa Island, by introducing a household feedlot production system (2-20 animals) based on the Leucaena leucocephala (leucanea) tree legume as an improved source of feed. We used a system dynamics approach to model the entire value chain, ac ...[more]

PMID: 28817666

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Project description:A previous study in cattle based on >48,000 markers identified markers on chromosome 4 near the chemerin gene associated with average daily feed intake (ADFI) in steers (P < 0.008). Chemerin is an adipokine associated with obesity and metabolic syndrome in humans, representing a strong candidate gene potentially underlying the observed association. To evaluate whether the bovine chemerin gene is involved in feed intake, 16 markers within and around the gene were tested for association in the same resource population. Eleven were nominally significant for ADFI (P < 0.05) and two were significant after Bonferroni correction. Two and five SNP in this region were nominally significant for the related traits of average daily gain (ADG) and residual feed intake (RFI), respectively. All markers were evaluated for effects on meat quality and carcass phenotypes. Many of the markers associated with ADFI were associated with hot carcass weight (HCW), adjusted fat thickness (AFT), and marbling (P < 0.05). Marker alleles that were associated with lower ADFI were also associated with lower HCW, AFT, and marbling. Markers associated with ADFI were genotyped in a validation population of steers representing 14 breeds to determine predictive merit across populations. No consistent relationships for ADFI were detected. To determine whether cattle feed intake or growth phenotypes might be related to chemerin transcript abundance, the expression of chemerin was evaluated in adipose of 114 heifers that were siblings of the steers in the discovery population. Relative chemerin transcript abundance was not correlated with ADFI, ADG, or RFI, but associations with body condition score and yearling weight were observed. We conclude that variation in the chemerin gene may underlie observed association in the resource population, but that additional research is required to determine if this variation is widespread among breeds and to develop robust markers with predictive merit across breeds.

Project description:Background and aimTo meet domestic demand for meat, Indonesia imports live cattle from Australia, which have non-bovine viral diarrhea (BVD)-free status. The consequence of importing live cattle from Australia is potentially introducing a novel BVD variant to Indonesia. Therefore, detecting BVD early and determining the agent's characteristics and clinical symptoms are necessary. This study aimed to detect and characterize clinical symptoms of bovine viral diarrhea (BVD) and highlight the importance of farm management as a risk factor for the spread of BVD. This study aimed to provide information about the effectiveness of preventive measures against BVD in Australian-imported cattle at the Tanjung Priok Seaport Agricultural Quarantine. Bovine viral diarrhea is among the most common diarrheal diseases found in feedlots and is a severe health and economic problem in cattle.Materials and methodsAll cattle in a selected feedlot were examined for clinical symptoms on their first day of arrival. The sampling criteria included age, body weight, body temperature (BT), animal breath (AB), pulse (PL), conjunctivitis (CJ), hyperlacrimation (HL), hypersalivation (HS), DR, fever, limping leg (LL), emaciation, stomatitis (ST), weakness (WK), and coronitis (CR). In addition, 64 blood samples were taken from cattle that exhibited clinical symptoms of BVD. On the 3rd day of arrival, a blood sample showing positive clinical symptoms was examined using antigen (Ag)-capture enzyme-linked immunosorbent assay (ELISA). The data from these clinical symptoms were analyzed alongside the laboratory results using multidimensional scale analysis, heatmap distribution, and principal component analysis (PCA). Furthermore, the positive serum samples obtained from the Ag-capture ELISA underwent a nested multiplex polymerase chain reaction and molecular detection and genetic characterization of BVDV based on the 5' untranslated region of the viral genome, followed by sequence and phylogenetic tree analyses.ResultsUsing PCA, 12 clinical symptom characteristics of BVD were determined from 13 clinical symptoms synergized with five cattle positive for Ag-capture ELISA. The clinical symptoms included internal factors such as physiological conditions of CJ, HL, HS, DR, BT, LL, loss of appetite, ST, WK, CR, AB, and PL. The screening test showed that five samples tested positive for the BVD Ag, while 59 tested negative. Phylogenetic tree analysis using a 360-nucleotide portion of the NS5B gene showed that Sample B23F5R had a distinct path compared to the other two samples in the phylogenetic diagram. The profile of sample B23F5R was closely related to BVDV reference subgenotype 1-a group (NCBI, access no. LC068605), with a homology percentage of 92.36%. Furthermore, this sample was similar to the BVDV reference 1-a, Strain 12, identified in Japan. The other two samples, B13F5R and A13F5R, showed close resemblance to the BVDV reference subgenotype 1-a that had been previously identified in Indonesia (NCBI, access no. MK411755), with homology percentages of 97.81% and 97.75%, respectively.ConclusionThe BVDV-1a strain is the main subtype present in beef cattle imported from Australia to West Java, Indonesia. The characteristics of clinical symptoms associated with BVD infection comprised 12 symptoms synergized with the positive sample in the PCA. The present results can facilitate the development of preventive and control measures for BVD circulation in Indonesia.

Dataset Information

Assessing the sustainable development and intensification potential of beef cattle production in Sumbawa, Indonesia, using a system dynamics approach.

Publications

Assessing the sustainable development and intensification potential of beef cattle production in Sumbawa, Indonesia, using a system dynamics approach.

Similar Datasets

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