Browsing by Author "Dahlanuddin"

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    Adoption of leucaena-based feeding systems in Sumbawa, eastern Indonesia and its impact on cattle productivity and farm profitability
    (International Center for Tropical Agriculture (CIAT), in association with Chinese Academy of Tropical Agricultural Sciences (CATAS), 2019-09-03) Dahlanuddin; Panjaitan T; Waldron S; Halliday MJ; Ash A; Morris ST; Shelton HM
    Leucaena has been fed to cattle by the Balinese community in Sumbawa and West Sumbawa districts on Sumbawa Island since the 1980s. However, prior to 2011, this practice was not adopted by the local Sumbawanese farmers. Since then, a model leucaena-based cattle fattening system was developed in Sumbawa and West Sumbawa districts in a collaborative research project between the Assessment Institute for Agricultural Technology (BPTP), University of Mataram and The University of Queensland (UQ) funded by the Australian Centre for International Agricultural Research (ACIAR), followed by a scaling-out project involving collaboration between the University of Mataram and CSIRO (Applied Research and Innovation Systems in Agriculture -ARISA project) funded by DFAT (Department of Foreign Affairs and Trade)promoting public-private partnerships. Further promotion of leucaena-based fattening systems occurred in Dompu, Sumbawa, through a project with the University of Mataram and Massey University funded by the New Zealand Ministry of Foreign Affairs and Trade(MFAT). By the end of October 2018, more than 2,500 farmers on Sumbawa Island were practicing leucaena-based cattle fattening. The main drivers of adoption of cattle fattening with leucaena were: (1) The high growth rates achieved (0.4–0.6 kg/d for bulls fed 100% leucaena and 0.66 kg/d when maize grain was added to the leucaena basal diet) compared with 0.16 kg/d for the traditional system, combined with high profitability; (2) the needs of farmers being met in terms of relevance and cultural appropriateness; (3) field extension staff being well trained and mentored, and respected by the farmers; (4) the local government being highly supportive of leucaena-based cattle fattening; and (5) additional benefits being increased dressing percentage and high carcass quality. The rapid increase in the use of leucaena for cattle fattening in eastern Indonesia is expected to have a significant positive impact on household incomes as well as on regional economic growth.
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    Investigation of causes of neonatal mortality in Bali cattle on Sumbawa Island
    (IOP Publishing, 2021-04-01) Sriasih M; Back PJ; Pomroy WE; Morris ST; Hickson RE; Dahlanuddin; Zaenuri LA; Soebari R; Kurniawan M; Qamar S
    There is a desire to increase cattle production on Sumbawa Island but anecdotal reports from farmers indicate that calf mortality can be high. The aim of this paper is to report the occurrence and common causes of calf mortality, as well as to determine if colostral antibody transfer is sufficient in new-born calves. Personal interviews were conducted with 27 farmers. Immunoglobulins were measured in neonatal calves (n=18) using the FASTest IgG Bovine kit. The presence of various pathogens was investigated in fecal samples from calves (n=12) with signs of diarrhea between 1-2 months of age using the FASTest D4T bovine kit and the presence of gastrointestinal parasites was investigated using fecal floatation from pre-weaned calves (3 weeks-3 months of age; n=62). From the questionnaire calf losses ranged from 10-27%, with most losses occurring in older calves. Only one of the 18 calves demonstrated an insufficient concentration of IgG in serum, indicating the possibility of failure of passive transfer from the dam. Of the samples tested from scouring calves, 7 out of 12 samples tested positive for one of the microorganisms causing general diarrhoea in calves. A range of different gastrointestinal nematode parasites were found although very few coccidial oocysts were seen. The results of these studies indicate that calf mortality is high and will be a limitation on the production of beef cattle for slaughter in the Dompu region of Sumbawa Island. Further investigation is required to determine which pathogens are the cause of this calf loss.