Judul: Pengaruh Suplementasi Berbagai Antioksidan Terhadap Performa dan Status Fisiologis Ayam Broiler yang Diberi Cekaman Terhadap Lingkungan Temperatur Tinggi
Abstrak: High ambient temperature results in heat stress on broiler chickens. Antioxidant is the most efficient suplement, which alleviate the negative effects of heat stress. This study was conducted to determine the effects of antioxidants suplementation on performance and physiological status of broiler chickens exposed to high environmental temperature. Ten days-old 48 broilers were randomly assigned to a 2x3 factorial design to 3 environmental treatments, 2 experimental diets of 8 replication of one birds each. The chickens were fed a commercial diet with or without mixed antioxidants. The environmental treatments were as follows: constant temperature at 25 ˚C, cyclic temperature at 25-35-25 ˚C, and constant temperature at 32 ˚C. Chickens in high environmental temperature had lower (P<0.01) feed intake, body weight, and body weight gain than in normal temperature. Antioxidants suplementation had no effect on performances and physiological. Antioxidants suplementation increased yellowness (P<0.05) of breast muscle. Antioxidants and environmental treatments did not influence malondialdehyde (MDA) level. These results suggested that antioxidants did not alleviate the negative effect of heat stress on broiler chickens.
Keyword: heat stress, broiler, antioxidants

Judul: Effects of Antioxidant as Oxidative stress treatment of Quail (Coturnix coturnix japonica)
Abstrak: Puyuh membutuhkan suhu lingkungan yang nyaman agar dapat berproduksi secara optimal. Lingkungan yang panas menjadi salah satu perhatian utama dalam budidaya unggas seiring dengan peningkatan suhu udara dalam pemanasan global. Tujuan penulisan ini adalah untuk mengkaji peranan antioksidan sebagai penangkal stress oksidatif pada puyuh yang dipelihara di daerah tropis. Metode yang digunakan adalah studi pustaka dengan teknik penulisan narative review. Stres oksidatif disebabkan karena suhu lingkungan pemeliharaan ternak jauh lebih tinggi dari zona nyaman yang dibutuhkan. Stres oksidatif yang disebabkan oleh ketidakseimbangan antara reactive oxygen species (ROS) dengan antioksidan di dalam tubuh dapat mengakibatkan penurunan kinerja sel tubuh, sehingga menurunkan produktivitas ternak. Antioksidan yang terkandung dalam pakan dapat mengurangi dampak negatif dari stres oksidatif. Antioksidan yang digunakan bisa berasal dari antioksidan alami seperti asam kandis, ekstrak krokot, mengkudu, kemangi, angkak, minyak jahe, dan tepung tauge. Antioksidan sintetis yang dapat digunakan antara lain adalah CuSO4, Selenium, Zn, dan Vitamin., Quail needs a comfortable environment for optimal production. Hot environment has emerged as a major concern in poultry as global temperature increased. The aim of this research is to study the role of antioxidants to reduce the stress that happened in the tropics. The method that this research used is narrative review. Stress in poultry can be caused because internal or external factors. Oxidative stress caused by an imbalance between reactive oxygen species (ROS) and antioxidants in the body can lead to a decrease in the performance of body cells, thereby reducing livestock productivity. The antioxidant contained in feed can reduce the effects of Oxidative stress. Antioxidants that can be used are natural antioxidants such as asam kandis, purslane, noni and basil, red yeast rice, ginger oil, and bean sprout flour, or synthetic antioxidants such as CuSO4, Selenium, Zn, dan Vitamins.
Keyword: Antioksidan, puyuh, ROS, stres oksidatif

Judul: : Persamaan Tunggal sebagai Representasi Kurva Komposit
Abstrak: A mathematical method is introduced to represent a composite curve based on an extension of analytic geometry. The representation is given either with a single equation or with two equations, in the case of parametric representation. This method permits the representation of composite curves in similar manner to the conventional representation of non-composite curves. Some mathematical tools, including Heaviside unit step function and periodizer function, are used in the establishment of a single equation. In this paper, regular equations of regular and irregular polygon, as well as composite curves of two dimensions, are implemented using a computer algebraic system, Mathematica.
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