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All Journal Jurnal Ilmu dan Teknologi Hasil Ternak Jurnal Nutrisi Ternak Tropis (JNT)
Kuncoro, Kristian Hadi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Education Immunology & microbiology Veterinary Other

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Correlation Between Intake of Crude Protein, TDN, and CA in Dry Phase Dairy Cows with Birth Weight and Body Size of Holstein Friesian Calf Kuncoro, Kristian Hadi; Harjanti, Dian Wahyu; Hartanto, Rudy; Saleha, Rischa Amalia
Jurnal Nutrisi Ternak Tropis Vol. 9 No. 1 (2026): JNT Jurnal Nutrisi Ternak Tropis March
Publisher : Faculty of Animal Science, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jnt.2026.009.01.1

Abstract

This study aimed to evaluate the relationship between Crude Protein (CP), Total Digestible Nutrient (TDN), and Calcium (Ca) intake in dry-stall dairy cows on birth weight and body size of Holstein Friesian calves. The study used an observational method with purposive sampling of dry-stall Holstein Friesian dairy cows in the early 8th month of gestation with parity 2–7. The parameters observed included CP, TDN, and Ca intake of the dams during the dry-stall period as well as birth weight, chest circumference, height, and body length of the calves. Data were analyzed using multiple regression to determine the relationship between variables. The results showed that the average intake of TDN, CP, and Ca was 8.03 kg/head/day, 1.52 kg/head/day, and 63 g/head/day, respectively. The average birth weight of calves was 38.89 kg with body measurements of 81.64 cm chest circumference, 78.92 cm height, and 70.82 cm length. Intake of TDN and CP together was significantly related to birth weight and chest circumference of calves, but not significantly related to height and length. Ca intake did not show a significant relationship to birth weight or body size of calves. Based on the results of the study, it can be concluded that the intake of CP and TDN of dairy cow in the dry phase of the pen is positively related to the initial performance of calves as reflected in birth weight and chest circumference, while the intake of Ca of the mother in that phase is not directly related to calf performance at birth.
Indonesian Local Plant Proteases as Rennet Alternatives: Sources, Mechanisms, Coagulation Performance, and Technological Challenges Saleha, Rischa; Apriliyani, Mulia Winirsya; Azkarahman, Aldyon Restu; Dafista, Dela; Wiryawan, Dimas; Mamduh, Muhamad Fadly Ilal; Kuncoro, Kristian Hadi; Ghiffari, Imam; Siagian, Maruahal Hari Gautama; Aprini, Gita
Jurnal Ilmu dan Teknologi Hasil Ternak Vol. 21 No. 2 (2026)
Publisher : Faculty of Animal Science Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Enzymatic coagulation determines curd formation and strongly influences cheese quality. Animal rennet remains the reference coagulant because chymosin hydrolyzes ?-casein with high substrate selectivity. Dependence on imported rennet, halal traceability requirements, production costs, and product diversification has increased interest in plant-derived coagulants from domestic resources. This descriptive review evaluates papaya, ginger, pineapple, moringa, biduri, jackfruit, and several Ficus species available or cultivable in Indonesia. The review examines plant organs, protease classes, milk-clotting activity, proteolytic activity, casein selectivity, optimum conditions, curd properties, cheese quality, safety, and application readiness. Papaya latex provides the strongest evidence for practical use through dangke production, although papain requires activity-based dosing and strict control of contact time. Ginger zingibain shows potential for coagulation at relatively high temperatures. Pineapple bromelain supports fresh cheese production and agro-industrial by-product valorization. Moringa proteases show promising ?-casein selectivity, but product-scale validation remains limited. Biduri proteases have been applied in local soft cheese, while jackfruit and Ficus latex remain less selective than conventional rennet. Plant-derived coagulants therefore require application-specific optimization, partial purification, residual activity control, and quality standards based on milk-clotting-to-proteolytic activity ratios. Successful adoption depends on matching each protease with appropriate cheese types and validating performance, safety, consistency, and scalability in Indonesia.
Co-Authors Apriliyani, Mulia Winirsya Aprini, Gita Azkarahman, Aldyon Restu Dafista, Dela Dian Wahyu Harjanti Ghiffari, Imam Mamduh, Muhamad Fadly Ilal Rudy Hartanto Saleha, Rischa Saleha, Rischa Amalia Siagian, Maruahal Hari Gautama Wiryawan, Dimas