Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) https://jiip.ub.ac.id/index.php/jiip <p style="text-align: justify;"><strong>Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science)</strong> is a journal published and managed by the Faculty of Animal Science, Universitas Brawijaya in collaboration with Ikatan Sarjana Peternakan Indonesia (ISPI). It is a peer-reviewed journal published three times a year and now actively using Open Journal System (OJS). This journal mediates the dissemination of researchers from various disciplines in animal science, such as animal feed and nutrition; animal reproduction, genetics, and production; social and economic; and animal products and technology. The access to entire articles in this journal is free. The editorial goal is to provide a forum exchange and an interface between academia, industry, government and society in the field of animal science and technology.</p> <p style="text-align: justify;"><strong>Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science)</strong> or <strong>JIIP</strong> has been indexed in Garba Rujukan Digital (Garuda), Google Scholar, SINTA, ISJD, Bielefeld Academic Search Engine (BASE), DOAJ, Scilit, DRJI, and CiteFactor. Based on Ministry of Research, Technology and Higher Education of the Republic of Indonesia (SK No. 148/M/KPT/2020), it<strong> has been accredited</strong> as the scientific journal with category<strong> Sinta 2</strong> for five years<strong>.</strong></p> <p style="text-align: justify;">We accept submission from all over the world. All submitted articles shall never be published elsewhere, must be original and not under consideration for other publication.</p> <p style="text-align: justify;"> </p> <p>Distinguished Researchers and Academicians,</p> <p>Starting form 2022, all manuscripts should be submitted with good English and clear phrasing.</p> <p><a href="https://issn.brin.go.id/terbit/detail/1412930605">E-ISSN 2443-0765</a> | <a href="https://issn.brin.go.id/terbit/detail/1180433915">P-ISSN 0852-3681</a></p> Faculty of Animal Science, Universitas Brawijaya en-US Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) 0852-3681 Authors who publish with this journal agree to the following terms:<br /><br /><ol type="a"><ol type="a"><li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_self">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.</li></ol></ol><br /><ol type="a"><ol type="a"><li>Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.</li></ol></ol><br /><ol type="a"><li>Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a href="http://opcit.eprints.org/oacitation-biblio.html">The Effect of Open Access</a>).</li></ol> Types of Tropical Legume Leaf Meal in Dietary Concentrate Increased the Production of Forage-finished Beef Bali Cattle https://jiip.ub.ac.id/index.php/jiip/article/view/2874 <p>The objective of this experiment was to assess the production responses of forage-finished beef Bali cattle fed concentrated feed containing different types of leaf meal tropical legumes. Sixteen forage-finished male beef Bali cattle (<em>Bos javanicus</em>) with an average body weight of 175.20±27.85 kg and aged 1.5-2.5 years were raised for 54 days for data collection. A randomized completely block design was used, which consisted of four dietary treatments and four replicates. The dietary treatments, which were formulated to be isonitrogenous to provide 120 g/kg dry matter (DM) crude protein, included Cipelang grass (<em>Pennisetum purpureum</em> <em>cv. Taiwan</em>) as a basal diet (Con) or a control supplemented with a dietary concentrate containing either leaf meal of Gliricidia (<em>Gliricidia sepium</em>) 54.57% (Gliri), Leucaena (<em>Leucaena leucocephala</em>) 55.59% (Leu) or Moringa (<em>Moringa oleifera</em>) 40.85% (Mor). The feed intake, average daily gain (ADG), feed conversion ratio (FCR), digestibility and blood parameters were measured. The results showed that legume leaf meal supplementation significantly increased (P&lt;0.05) feed intake, ADG, digestibility, haemoglobin and total leucocytes, while FCR was not affected (P&gt;0.05). The highest ADG was recorded for Leu and Mor cattle, which was in line with the highest feed intake. In conclusion, forage-finished beef Bali cattle fed Cipelang grass as a basal diet grew faster when supplemented with dietary concentrate containing Moringa or Leucaena leaf meal.</p> Aholiab Aoetpah Jacobus Oematan Manix Manfe Wenbo Sun Musa Banunaek I Gusti Komang Wirawan Copyright (c) 2024 Aholiab Aoetpah, Jacobus Oematan, Manix Manfe, Wenbo Sun, Musa Banunaek, I Gusti Komang Wirawan http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-05 2024-04-05 34 1 1 10 10.21776/ub.jiip.2024.034.01.01 Optimization of the Thickness, Water Vapour Transmission Rate and Morphology of Protein-Based Films Incorporating Glycerol and Polyethylene Glycol Plasticizers https://jiip.ub.ac.id/index.php/jiip/article/view/2864 <p>Edible film is a thin layer that can coat food products and protect them from physical, chemical, and microbiological disturbances. This study aimed to determine the effect of the concentration ratio and different plasticizers on the thickness, water vapour transmission rate, and morphology of protein-based edible films. The study used a completely randomized design with a factorial pattern. The experiment involved two factors: Factor A, which was the whey-gelatine concentration ratio, at three levels (A1 = 1:0.5; A2 = 1:0.75; A3 = 1:1); and Factor B, which was the plasticizer, at two levels (B1 = glycerol; B2 = polyethylene glycol (PEG)). The study revealed that the water vapour transmission rate was significantly affected (P&lt;0.01) by the interaction between whey-gelatin and different types of plasticizers. Additionally, the film thickness was significantly affected (P&lt;0.01) by the whey-gelatine ratio, and the water vapour transmission rate was significantly affected (P&lt;0.01) by the different types of plasticizers used. The film made from protein had a thickness of 0.282-0.357 mm, a water vapour transmission rate of 4.27-5.55 g/mm2.h, and a homogeneous surface structure resulting from the good mixing of whey and gelatin. The concentration of whey-gelatine and the use of different plasticizers can affect the thickness, WVTR, and morphology of the film. The use of glycerol as a plasticizer resulted in a greater thickness, water vapour transmission rate (WVTR), and morphology compared to those of the PEG plasticizer when the whey-gelatin concentration was 1:1.</p> Fahrullah Fahrullah Djoko Kisworo Bulkaini Bulkaini Wahid Yulianto Baiq Rani Dewi Wulandani Haryanto Haryanto Azhary Noersidiq Vebera Maslami Kalisom Ulkiyah Kartika Kartika Lilik Rahmawati Copyright (c) 2024 Fahrullah Fahrullah, Djoko Kisworo, Bulkaini Bulkaini, Wahid Yulianto, Baiq Rani Dewi Wulandani, Haryanto Haryanto, Azhary Noersidiq, Vebera Maslami, Kalisom Ulkiyah, Kartika Kartika, Lilik Rahmawati http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-05 2024-04-05 34 1 11 20 10.21776/ub.jiip.2024.034.01.02 Financial Feasibility Analysis of the Beef Cattle Fattening Business https://jiip.ub.ac.id/index.php/jiip/article/view/2828 <p>Financial analysis is an activity of assessing and determining rupiah units on aspects that are considered feasible from decisions made in the business analysis stage, and the results of the analysis are used as basic parameters in determining the feasibility of a business. The objective of this research was to determine the financial feasibility of the beef cattle fattening business in Balikpapan city. The study employed a survey method within the North Balikpapan subdistrict, in which 40 respondents were selected through purposive sampling. Criteria for respondents included ownership of at least two beef cattle with a rearing period exceeding one year. The financial feasibility analysis used several key indicators, including the break event point (BEP), net present value (NPV), benefit cost ratio (B/C ratio), internal rate of return (IRR), and payback period (PP). Based on the study calculations, the BEP was IDR 9.676.911; NPV <sub>(9.15%)</sub> was IDR 1.017.779.514; NPV <sub>(14.15%)</sub> was IDR 952.403.118; B/C ratio was 2.7; IRR was 87%; and PP was 0.37 years. According to these results, it could be concluded that the beef cattle business in the North Balikpapan subdistrict, Balikpapan city, was feasible.</p> Hamdi Mayulu Sarah Shevi Annisa Puteri Marry Christiyanto Boyke Rorimpandey Copyright (c) 2024 Hamdi Mayulu, Sarah Shevi Annisa Puteri, Marry Christiyanto, Boyke Rorimpandey http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-05 2024-04-05 34 1 21 30 10.21776/ub.jiip.2024.034.01.03 Optimizing Muza-Smoked Salted Egg Production: A SWOT Analysis of an Empowerment Program Leveraging the Triple Helix Model https://jiip.ub.ac.id/index.php/jiip/article/view/2850 <p>Efforts to improve the quality of small and microenterprises (SMEs) depend not only on the availability of internal resources but also on innovation and worldwide regulation dynamics. The triple helix concept has become an alternative solution for improving the quality of SMEs, which consists of academicians, governments, and businesses (SMEs). Muza is an SME that is being fostered by lecturers in the Faculty of Animal Science Universitas Brawijaya in Blitar District; this SME produces smoked salted eggs and has become one of the featured products based on Blitar's Service of Fishery and Livestock Department. The communication between the academician and the Muza Management-Government on the development program was implemented separately. This research aimed to develop development strategies to increase the quality of Muza smoked salted eggs. The research was conducted in Blitar District in July 2022. The research used an explanatory method to identify problems in the field and categorize the problems into groups using the SWOT method. SWOT components are formed using in-depth interviews with the planner and implementer of the strategy, which consists of five people. The subjects were given a closed questionnaire that consisted of SWOT components. The SWOT analysis results show that the total IFE score is 4 and the EFE score is 4.45. The IE matrix shows that the empowerment strategy is on the “V” cell, which has a "hold and maintain" strategy. Thus, the programs given were not efficient, and strategic planners need to focus on product quality improvement. The design of GMP and HACCP systems is strongly recommended.</p> Suwigda Agung Novandinata Siti Azizah Abdul Manab Irfan H Djunaidi Achadiah Rachmawati Rositawati Indrati Rosyida Fajri Rinanti Copyright (c) 2024 Suwigda Agung Novandinata, Siti Azizah, Abdul Manab, Irfan H Djunaidi, Achadiah Rachmawati, Rositawati Indrati, Rosyida Fajri Rinanti http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-05 2024-04-05 34 1 31 42 10.21776/ub.jiip.2024.034.01.04 Determination of the New SNP g.939A>G of the TYR Gene in Abnormal Coat Color in Bali Cattle https://jiip.ub.ac.id/index.php/jiip/article/view/2866 <p>This study aimed to assess the presence of single nucleotide polymorphisms (SNPs) in the exon 1 region of the tyrosinase (TYR) gene in Bali cattle with abnormal coat color. This study analyzed 43 Bali cattle, 26 individuals with typical or standard coat color, and 17 individuals with albinism. The genetic diversity of the TYR gene was determined via direct sequencing and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) techniques. The sequence data of the TYR gene were scrutinized using BioEdit and MEGA10 software to detect single nucleotide polymorphisms (SNPs) related to different types of coat color features in Bali cattle. The genetic diversity information was derived from computations performed using PopGen 1.32 software. The results showed that exon 1 of the TYR gene was affected by the new SNP g.939A&gt;G, which is polymorphic in Bali cattle. In conclusion, the SNP c.939A&gt;G can be further analyzed for use as a candidate-assisted selection (MAS) for abnormal coat color in Bali cattle.</p> Kholijah Mokhmad Fakhrul Ulum Sri Darwati Ronny Rachman Noor Jakaria Copyright (c) 2024 Kholijah, Mokhmad Fakhrul Ulum, Sri Darwati, Ronny Rachman Noor, Jakaria http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-18 2024-04-18 34 1 43 50 10.21776/ub.jiip.2024.034.01.05 Chemical Composition and Fermentation Characteristics of Different Proportions of Fermented Poultry Manure and Sheep Feces as Unconventional Feed https://jiip.ub.ac.id/index.php/jiip/article/view/2861 <p>The aim of this recent study was to investigate the effects of different ratios of poultry manure and sheep feces on the fermentation quality of fermented poultry and sheep manure (FPSM). This study used poultry manure, dry sheep feces, cassava flour, molasses, and the addition of multiple microbes (Saus Burger Pakan, SBP<sup>®</sup>). Dried and ground sheep feces, as adsorbents, were mixed with fresh poultry manure at different ratios, including 40% sheep feces and 60% poultry manure (T40), 50% sheep feces and 50% poultry manure (T50), and 60% sheep feces and 40% poultry manure (T60). Each treatment was replicated in triplicate, and 30 kg of each silo was fermented for 14 d. After fermentation, the samples from each treatment were analysed to determine their physical characteristics, chemical compositions, fermentation characteristics, and microbial contamination. The data were analysed using analysis of variance (ANOVA) followed by Duncan’s test if any significant difference was detected. The FPSM results showed that T60 presented (P&lt;0.05) higher amounts of dry matter, crude fibre, pH, and lactic acid bacteria colonies. This study recommended the addition of as much as 60% SBP<sup>®</sup> inoculum and absorbent poultry manure to produce optimum and effective fermentation quality in poultry manure processing.</p> Nadya Durrotul Aisy Arrynda Rachma Dyasti Wardani Dimas Hand Vidya Paradhipta Ali Agus Cuk Tri Noviadi Copyright (c) 2024 Nadya Durrotul Aisy, Arrynda Rachma Dyasti Wardani , Dimas Hand Vidya Paradhipta, Ali Agus, Cuk Tri Noviandi http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-18 2024-04-18 34 1 51 59 10.21776/ub.jiip.2024.034.01.06 The Effect of Credit Access on Climate Change Adaptation Strategies Among Dairy Farmers in East Java, Indonesia https://jiip.ub.ac.id/index.php/jiip/article/view/2842 <p>This study investigated the critical issue of credit access and its implications for climate change adaptation among dairy farmers in East Java, Indonesia. Using survey cross-sectional data from a sample of 70 dairy farmers, this research employs a combination of probit modelling and propensity score matching (PSM) to examine the determinants of credit access and evaluate its impact on climate change adaptation. The findings indicate that credit access is positively and significantly associated with factors such as farming experience, family size, and the number of employed household members. These factors emerge as pivotal determinants shaping farmers' ability to secure credit. The analysis employing PSM further reveals a notable effect of credit access on climate change adaptation. Farmers with access to credit demonstrate a greater propensity to adopt and implement a greater number of climate change adaptation strategies. The positive association between credit access and climate change adaptation underscores the potential role of financial support in enhancing farmers' resilience to environmental challenges. This suggests that facilitating credit access for farmers could significantly contribute to promoting sustainable agricultural practices in the context of climate change. These findings have implications for policymakers, agricultural practitioners, and financial institutions. By leveraging these insights, targeted interventions can be devised to improve credit accessibility for farmers, thereby fostering effective climate change adaptation strategies within the agricultural sector.</p> Eko Nugroho Tina Sri Purwanti Moh Shadiqur Rahman Nanang Febrianto Priyo Sugeng Winarto Nila Kamil Copyright (c) 2024 Eko Nugroho, Tina Sri Purwanti, Moh Shadiqur Rahman, Nanang Febrianto, Priyo Sugeng Winarto, Nila Kamil http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-19 2024-04-19 34 1 60 66 10.21776/ub.jiip.2024.034.01.07 Effects of Tamarind Seed on the Growth Performance and Nutrient Digestibility of Porcine https://jiip.ub.ac.id/index.php/jiip/article/view/2832 <p>Pig livestock feed generally competes with human needs; therefore, alternative feed is needed in the form of tamarind seeds, which contain nutrients but are also antinutrients. The technology required was to use fermented liquid feed. This study aimed to examine the effects of tamarind seeds on the nutrient digestibility growth performance of pigs. The study used a randomized blocked design (RBD) with 4 treatments and replications. In the present study, R0 = fermented liquid feed (FLF) without tamarind seeds (TS), R10 = FLF with 10% TS, R20 = FLF with 20% TS, and R30 = FLF with 30% TS. The analyzed data were subjected to analysis of variance and Duncan's test. The research variables were nutrient consumption and nutrient digestive rations. The results showed that increasing the percentage of TS in FLF had no significant effect (P&gt;0.05) on nutrient consumption or crude fat digestibility in Landrace crossed pigs but had a very significant effect (P&lt;0.01) on the digestibility of dry matter, crude protein, nitrogen-free extracts, crude fat, crude fiber, and ash. The conclusion is that tamarind seeds could be used in fermented liquid feed up to 30%, but it is better to use 20% to increase the nutrient digestibility of pigs. Further research regarding its use to determine the performance of carcass production is recommended</p> Redempta Wea Andy Yumina Ninu Adrianus Dede Elisa Dewi Bernadete Barek Koten Copyright (c) 2024 Redempta Wea, Andy Yumina Ninu, Adrianus Dede, Elisa Dewi, Bernadete Barek Koten http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-19 2024-04-19 34 1 67 74 10.21776/ub.jiip.2024.034.01.08 Comparison of the Bioactive Properties of Honey Proteins from Floral Sources in Indonesia https://jiip.ub.ac.id/index.php/jiip/article/view/2868 <p>The diversity of plant species in Indonesia has resulted in a wide variety of floral honey. The antioxidant activities of these Indonesian honeys have not been determined. Ten types of honey from indigenous Indonesian sources (9 monofloral; 1 heterofloral) were evaluated for their antioxidant activity using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method. The Folin-Ciocalteu test was used to determine the total phenolic content, and an aluminum chloride colorimetric assay was used to determine the total flavonoid content. SDS–PAGE was used to determine the molecular weights of the honey proteins. The mean antioxidant activity of the honey samples, defined as the IC<sub>50</sub> of DPPH, ranged from 5.46 to 34.42. The mean total phenol content ranged from 27.57 to 53.85 mg GAE/100 g, and the mean flavonoid content ranged from 3.58–15.67 mg CE/100 g. A protein of ~60 kDa was detected in all honey varieties. A positive correlation was observed between antioxidant activity, total phenols, and total flavonoids, indicating that their phenolic and flavonoid components confer the antioxidant activity of these honey varieties. To the best of our knowledge, indigenous Indonesian honey, especially monofloral Calliandra honey, has shown greater antioxidant activity than other kinds of honey worldwide.</p> Firman Jaya Herly Evanuarini Edy Susanto Aldyon Restu Azkarahman Copyright (c) 2024 Firman Jaya, Herly Evanuarini, Edy Susanto, Aldyon Restu Azkarahman http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-22 2024-04-22 34 1 75 86 10.21776/ub.jiip.2024.034.01.09 In Silico Study of Bioactive Compounds from Yellow Bioherbal as Potential LpxC Protein Inhibitors for Controlling Pathogenic Bacteria in Broiler Chicken Intestinal https://jiip.ub.ac.id/index.php/jiip/article/view/2830 <p>Bioherbal, a feed additive made from rhizome extract, exhibited promising capabilities in eradicating pathogenic bacteria residing within the digestive tracts of broiler chickens. The LpxC protein, a biosynthetic regulator of lipid A (a critical component of gram-negative bacterial cell walls), was the focus of this research. Our primary objective was to assess the bioactive potential of bioherbal as a prospective inhibitor of UDP-3-O-(R-3-hydroxymyristoyl)-N-acetylglucosamine (LpxC) by employing in silico methods. Computational analyses were employed to scrutinize the interactions between the LpxC protein and various ligands on Bioherbal. Molecular docking served as the initial screening process, evaluating 48 bioactive compounds based on energy affinity, conformation values, and interactions with protein residues. The three compounds exhibiting the lowest binding affinities were subjected to molecular dynamics simulations. Molecular docking analysis revealed that most of the screened compounds exhibited low binding affinity for LpxC. Elephantorrhizol, zedoraldehyde, glechomanolide, demethoxycurcumin, curcumin, hexahydrocurcumin, gweicurculactone, germacrone, and 1,2-dihydrocurcumin exhibited lower binding affinities (&lt;-7 kcal/mol). Elephantorrhizol, curcumin, and hexahydrocurcumin were selected for further analysis via molecular dynamics due to their similarity to native ligands. Molecular dynamics simulations revealed stable interactions of LpxC. In summary, these findings suggested that Bioherbal possesses the potential to function as an LpxC inhibitor, thereby offering a promising avenue for preventing the proliferation of gram-negative bacteria within the digestive tracts of broiler chickens. This computational study paves the way for further experimental investigations in this domain.</p> Zaen Yusuf Muhammad Halim Natsir Osfar Sjofjan Copyright (c) 2024 Zaen Yusuf, Muhammad Halim Natsir, Osfar Sjofjan http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-23 2024-04-23 34 1 87 98 10.21776/ub.jiip.2024.034.01.10 Conception Rate of Filial Friesian Holstein Cows After Being Inseminated Using Unsexed and Sexed Semen https://jiip.ub.ac.id/index.php/jiip/article/view/2796 <p>This research aimed to increase the reproduction of dairy cows with artificial insemination (AI) in Filial Friesian Holstein cows using sexed semen. This research was conducted in Pandesari Village, Pujon District, Malang Regency, East Java. The 114 Filial Friesian Holstein cows were used in this research and divided into three Treatments: T1: 38 cows were inseminated using unsexed semen, T2: 38 cows were inseminated using albumin sedimentation sexed semen, and T3: 38 cows were inseminated using Percoll density gradient centrifugation (PDGC) sexed semen. The material was selected by purposive sampling with a minimum body condition score (BCS) specification of 2.5 (scale 1-5); the material had normal reproductive organs and showed signs of heat/estrus. The parameters of this study are the percentage of non-return rate (NRR) 1, NRR 2, and conception rate (CR). The data obtained were analyzed using descriptive analysis. The differences in NRR and CR between the unsexed sperm, sexed sperm with albumin sedimentation, and sexed sperm with PDGC were analyzed with the chi-square test and were considered significant at p &lt; 0.05. The chi-square test was carried out to compare the observed values with the expected values. The results showed that the success of artificial insemination was greater by using albumin-sedimented sexed semen compared to unsexed semen or PDGC-sexed semen, with NRR values of 1 (95%), NRR values of 2 (87%) and CR values of 63%. The conception rate of artificial insemination using albumin-sedimented sexed semen was 63% greater than that of artificial insemination using unsexed semen and PDGC-sexed semen, which obtained the same value of 47%.</p> Amir Firdaus Putri Utami Anisa Ramadhani Habib Asshidiq Syah Mashitah ShikhMaidin Aulia Puspita Anugra Yekti Nurul Isnaini Trinil Susilawati Copyright (c) 2024 Amir Firdaus, Putri Utami, Anisa Ramadhani, Habib Asshidiq Syah, Mashitah ShikhMaidin, Aulia Puspita Anugra Yekti, Nurul Isnaini, Trinil Susilawati http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-24 2024-04-24 34 1 99 107 10.21776/ub.jiip.2024.034.01.11 The Ability of KUB Rooster to Produce Indonesian Super Native Chickens https://jiip.ub.ac.id/index.php/jiip/article/view/2873 <p>The crossbreed originated from male native chicken x female commercial layers, currently in Indonesia called a Super Native Chicken (<em>Ayam Kampung Super</em>). This study aimed to evaluate the ability of a selected local KUB (<em>Ayam Kampung Unggul Balitbangtan</em>) rooster to cross female ISA Brown chickens to produce Indonesian super native chickens. In comparison, the ISA hen was crossed with an unselected local chicken of <em>bangkok </em>descent (<em>Ayam Kampung Turunan Bangkok, </em>KTB) rooster, and the same hen strain was crossed with a Rhode Island Red (RIR) rooster. The treatment was crossbreeding (CB): CB<sub>1</sub>= KUB x ISA, CB<sub>2</sub>= KTB x ISA, and CB<sub>3</sub>= RIR x ISA. The results of the study showed that there were no significant (P&gt;0.05) effects on fertility, hatchability, embryonic mortality, or chick abnormalities, but KUB x ISA resulted in significantly greater (P&lt;0.01) chick weight and chick yield than did KTB x ISA. In conclusion, the KUB rooster was able to cross with ISA Brown to produce Super Native Chicken without significant adverse effects on fertility or hatchability, resulting in better quality day-old chicks than those produced by the KTB rooster.</p> Zulfan Zulfan Muhammad Aman Yaman Muhammad Faris Ariga Muhammad Ammar Copyright (c) 2024 Zulfan Zulfan, Muhammad Aman Yaman, Muhammad Faris Ariga, Muhammad Ammar http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-25 2024-04-25 34 1 108 117 10.21776/ub.jiip.2024.034.01.12 Effects of Supplementation with Different Nutrient Contents of Vitamin E Diets on the Performance and Health Status of IPB-D3 Candidate Chicken Strains https://jiip.ub.ac.id/index.php/jiip/article/view/2879 <p>The purpose of this study was to evaluate the effect of supplementation with 200 ppm vitamin E in a diet with different nutrient contents on the performance and health status of the IPD-D3 candidate chicken strain. This research used 160 IPB-D3 chickens that were reared for 5 to 12 weeks. This experiment used a completely randomized factorial design with 4 treatments and 4 replications. P0 = control diet, P1 = control diet minus 3% ME and 3% PK, P2 = P0 + vitamin E 200 ppm, P3 = P1+ vitamin E 200 ppm. The data were analysed using ANOVA with an interaction’s significant difference test. The results showed that there was an interaction effect between supplementation with 200 ppm vitamin E and different nutrient contents on feed consumption (P&lt;0.05). Supplementation of vitamin E (200 ppm) in the control diet according to Cobb’s recommendation gave the highest feed consumption. A decrease in the metabolizable energy (90,50 kcal kg<sup>-1</sup>) and crude protein (7.2%) of the diet (P1) significantly decreased (P&lt;0.05) the final body weight, body weight gain and feed efficiency. Supplementation with 200 ppm vitamin E significantly (P&lt;0.05) decreased the leukocyte count. In conclusion, reducing the metabolic energy and protein content of the diet reduced chicken growth by 10.40% and feed efficiency by 7.24%. Supplementation of vitamin E in the diet has a good effect on immunity and reduces leukocytes. According to the Cobb broiler standard (2018), the IPB-D3 chicken strain still responds to a diet that contains nutrients supplemented with 200 ppm vitamin E, which results in good performance and production</p> Sara Romantis Sumiati Cece Sumantri Copyright (c) 2024 Sara Romantis, Sumiati, Cece Sumantri http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-26 2024-04-26 34 1 118 125 10.21776/ub.jiip.2024.034.01.13 Growth Pattern of Male and Female Kejobong Goats in Rural Areas https://jiip.ub.ac.id/index.php/jiip/article/view/2870 <p>Growth is an important physiological activity in the animal that produces meat. This study aimed to investigate the growth rate of male and female Kejobong goats raised by farmers in Kejobong District, Purbalingga Regency, Central Java Province, Indonesia. The materials observed in this study were 43 female Kejobong goats aged 0–36 months and 34 male Kejobong goats aged 0–18 months, which were selected based on the available reliance sampling method. The relationship between the body weight (Y) and age (X) of the goats was analysed by cross-sectional comparison, with simple statistics and correlation regression. The body weights of male and female Kejobong goats aged 0–12 months were similar. However, after 12 months of age, the body weight of the males was greater than that of the females. The regression analysis and correlation between age and body weight in male and female Kejobong goats showed that the equation of the regression in the male goats was Y = - 0.040 X<sup>2</sup> + 2.662 X + 1.105 and that in the female goats was Y = -0.019 X<sup>2</sup> + 1.566 X + 4.665. The correlation coefficients (r) between age and body weight in male and female Kejobong goats were 0.97 and 0.90, respectively, while the coefficients of determination (r<sup>2</sup>) were 93.50% and 80.60%, respectively. It was concluded that the body weights of male and female Kejobong goats increased with the age of the goats. The relationship between age and body weight of Kejobong goats was very close</p> Endang Purbowati Edy Rianto Copyright (c) 2024 Endang Purbowati, Edy Rianto http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-26 2024-04-26 34 1 126 131 10.21776/ub.jiip.2024.034.01.14 Production Elasticity of Layer Farming During the COVID-19 Pandemic in Blitar District https://jiip.ub.ac.id/index.php/jiip/article/view/2806 <p>The livestock sub-sector, an integral part of the agricultural sector, is the animal protein producing sub-sector which plays an important role in meeting people's nutritional needs. The development of the laying hen farming business has enormous potential, this is because purebred chicken eggs contribute quite a lot to animal protein self-sufficiency. The research aims to analyze the input factors of the production that affect the production of layer farming businesses and to assess the production elasticity of these businesses during the COVID-19 pandemic in Blitar District. Data collection took place between July and August 2020 in the Blitar Distrcit. Utilizing a sample random sampling method. The study involved 64 farmers as representative. The research variables used in this study were the population of laying hens, the price of chicken eggs, feed costs, vaccines and medicines expenses, seed prices, mortality, electricity costs, the price of culled chickens, Hen Day Production (HDP) and the number of workers. Quantitative analysis was employed to analyze production costs, revenues, and income, while qualitative analysis was used to analyze production elasticity through Cobb-Douglas regression analysis. The research data were processed using SPSS version 24. The results of the study indicate that 1) the population of laying hens and HDP significantly affected the production of layer farming businesses, along with the cost of vaccines and medications in the Blitar District. 2) The population of layers, mortality rates, electricity costs, HDP, and total labor demonstrated elasticity with respect to the production of layer farms. Conversely, egg prices, feed costs, vaccination and medication expenses, day-old chick (DOC) costs, and final chicken prices exhibited inelasticity concerning the production of layer farms in Blitar district.</p> Gunawan Adi Santoso Budi Hartono Umi Wisaptiningsih Suwandi Copyright (c) 2024 Gunawan Adi Santoso, Budi Hartono, Umi Wisaptiningsih Suwandi http://creativecommons.org/licenses/by-nc-sa/4.0 2024-04-29 2024-04-29 34 1 132 141 10.21776/ub.jiip.2024.034.01.15