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Nutritional Quality of a Mixture of Indigofera sp. Leaves and Banana Steams Fermented Using Ma-11 Inoculant at Different Doses Yunita Purnamasari; Ali Mursyid Wahyu Mulyono; Muhammad Husein
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.11727

Abstract

Feed availability is one of the main constraints in livestock production, especially in tropical regions where supply is highly influenced by seasonal changes. Banana stems have potential as livestock feed due to their abundant availability; however, they contain low protein and high crude fiber, which requires processing to improve their nutritional quality. One of the methods that can be applied is fermentation using a bioactivator. This study aimed to evaluate the effect of different doses of Microbacter Alfaafa-11 (MA-11) inoculant on the nutritional quality of fermented banana stem and Indigofera sp. leaves. The study utilized a Completely Randomized Design (CRD) featuring three dose levels (0%; 0.05%; and 0.1%) and included four replicates over a period of 12 days of anaerobic fermentation. The measured variables were crude protein, crude fiber, and the weight of dry matter biomass. The data were examined using analysis of variance (ANOVA), followed by Duncan’s Multiple Range Test at a significance threshold of 5%. The findings indicated that the addition of MA-11 notably raised the crude protein level (P<0.05), with the highest value recorded at the 0.1% dose; however, it did not significantly affect (P>0.05) the crude fiber or the dry matter biomass weight. These findings indicate that MA-11 is more effective in improving protein content than in reducing crude fiber or modifying dry matter biomass weight.
Effects of Anchovy Head Meal and Rice Bran on KUB-2 Chickens Irwan Setyo Nugroho; Ali Mursyid Wahyu Mulyono; Muhammad Husein
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.11756

Abstract

This study addressed the increasing cost of conventional feed ingredients by evaluating local alternative feed resources for KUB-2 chicken production. Although anchovy heads (Stolephorus sp.) and rice bran have shown potential as low-cost feed ingredients, their combined substitution effects on KUB-2 chickens have not been previously investigated. This study aimed to evaluate the effects of substituting anchovy heads and rice bran in the diet on feed intake, body weight gain, feed conversion ratio, and mortality of KUB-2 chickens. The experiment used a Completely Randomized Design with three treatments: T0 (0% substitution), T1 (5% substitution), and T2 (10% substitution), each with four replications, resulting in 12 experimental units. Data were analyzed using analysis of variance followed by Duncan’s multiple range test. The results showed that substitution up to 10% had no significant effect (P>0.05) on all measured parameters and tended to maintain growth performance and feed efficiency. This indicates that the nutrient contribution of anchovy heads and rice bran was sufficient to support normal physiological growth without adverse effects on survival. These findings demonstrate that anchovy heads and rice bran can serve as practical local feed alternatives for partial replacement of conventional ingredients, offering potential feed cost efficiency while maintaining productive responses in KUB-2 chickens. Further studies using higher inclusion levels are recommended to determine the optimal biological and economic substitution threshold.
The Effect of Cooling Pad Spacing in Closed Cages on Broiler Chicken Performance Khayla Nur Aisya Fitri; Ali Mursyid Wahyu Mulyono; Muhammad Husein
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.11759

Abstract

Optimizing cooling pad placement in closed house systems is critical to ensuring uniform thermal distribution and preventing heat stress, yet the effect of cooling pad distance on broiler performance during the starter phase remains insufficiently studied. Objective: This study investigated the effect of three cooling pad distances (6 m, 12 m, and 18 m) on feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) of broiler chickens during the starter phase. Methods: A completely randomized design (CRD) was applied with three treatments (P1, P2, P3) and four replications (5 birds/replication; 60 birds total) over 14 days at a commercial broiler farm in Jenawi, Karanganyar. Data were analyzed using one-way ANOVA and Duncan's Multiple Range Test. Results: Cooling pad distance had no significant effect (P>0.05) on FI, BWG, or FCR, with all FCR values remaining within the normal commercial range. The evaporative cooling pad effectively distributed cool air uniformly up to 18 m, demonstrating that the full capacity of the closed house can be utilized without compromising production efficiency. These findings contribute scientific evidence that proper cooling pad installation eliminates thermal gradients across house zones, providing a basis for optimizing housing design and management in tropical broiler production.
The Effect of Adding Molasses to Avocado Seed Flour (Persea americana) Silage on Physical and Chemical Quality Engkus Ainul Yakin; Ali Mursyid Wahyu Mulyono; Catur Suci Purwati; Sri Sukaryani
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.11807

Abstract

Avocado seed meal, a part of the avocado plant that is rich in antioxidants and various other nutrients and non-nutrient substances, has great potential to be used as an herbal additive in animal feed. This study aims to determine the effect of molasses addition on the nutrient profile and quality of avocado seed meal silage. The control treatment (P1) used plain avocado seed flour, while the experimental treatments (P2, P3, and P4) incorporated increasing molasses concentrations of 1%, 2%, and 3% of dry matter, respectively. All treatments were stored for 21 days at ambient temperature. The metrics assessed included nutrient composition, physical characteristics, and fresh silage quality. The data collected were evaluated using analysis of variance, and differences in parameter values among treatments were additionally examined with DMRT at a significance level of 5%. Findings showed that molasses notably improved the silage's nutrient composition and fresh quality (P<0.05), but had no significant effect on physical quality (P>0.05). The conclusion of this study suggests that adding 3% molasses can produce the highest-quality avocado seed meal silage as an optimal feed for livestock.