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This experiment explores the effect and optimal levels of irradiated Chitosan (IrC) in the diet on lipogenesis and its effect on the blood lipid profile of the Sentul Chickens starter phase. The IrC was generated from shrimp waste chitin, and in addition to being a feed supplement, it has the potential to reduce environmental pollution. Furthermore, Sentul chickens were 100 samples, reared from 0-8 weeks, and the observed variables included triglyceride, cholesterol, and blood Non-Esterified Fatty Acid (NEFA). A completely randomized design (CRD) experimental method was used with four treatments and five replications. The treatments were K0 = basal diet without IrC, K1 = 300 ppm IrC in basal diet, K2 = 350 ppm IrC in basal diet, K3 = 400 ppm IrC in the basal diet. Meanwhile, the samples used for analysis were 40 individuals from the research object based on the average body weight of the population. The results showed that the provision of rations containing IrC (K1) 300 ppm, (K2) 350 ppm, and (K3) 400 ppm had a significant effect (P<0.05) on triglyceride, cholesterol, and NEFA profile in Sentul Chickens blood of the starter phase.

Heat stress causes a decrease in metabolic and immune function, thus resulting in decreased production. Natural extracts such as the active compound diallyl-n-sulfide (Dn-S) are one strategy to overcome the adverse effects of heat stress. One hundred and fifty female laying hens, with a mean bodyweight of 1191.38±25.54 g, aged 11 weeks, were used in this experiment to study Dn-S’s impact from garlic on the metabolite profile of the glycogenolysis pathway and heart failure in laying hens. The sample of laying hens was divided into five treatment groups, each with 25 samples and the Dn-S from garlic isolated by distillation technique. The study was carried out with three types of experimental treatment, groups with a zone temperature of heat stress (38°C) and without Dn-S, heat stress (38°C) and 100 μL Dn-S/sample, heat stress (38°C) and 1125 μL Dn-S/sample, respectively. Based on the results of the study, it shows that heat stress causes an increase in the rate of glycogenolysis. It appears that the administration of 200 μL Dn-S effectively reduces the rate of glycogenolysis and can maintain a normal heart condition. It was concluded that heat stress in laying hens could be avoided by administering diallyl n-sulfide (Dn-S) from garlic. Dn-S has an essential role in preventing changes in the osmotic pressure of body fluids. Overall, it can cope with the metabolic and physiological changes associated with heat stress.

The research aims to examine the effect of irradiated chitosan (ICh) on enzyme levels (SGPT, SGOT, and Gamma Transpeptidase) in the starter phase of Sentul chickens and its physiological conditions, as a result of fungal contamination from the environment (specifically from feed ingredients). This was conducted in the Poultry Production Laboratory, and the sample analysis was performed at the Lab of Animal Physiology and Biochemistry, Padjadjaran University. The samples consisted of 100 Sentul chickens reared from 0-8 weeks, and the method used was a completely randomized design (CRD) with 4 treatments and 5 replications. The treatments were K0 = basal diet (BD) without ICh, K1 = BD + 300 ppm ICh, K2 = BD + 350 ppm ICh, K3 = BD + 400 ppm ICh. The results showed that ICh was significantly different (P < 0.05) on SGPT, SGOT, and Gamma Transpeptidase levels. Therefore, it was concluded that the administration of 400 ppm ICh in the feed effectively enhanced the liver status of Sentul chickens in the starter phase.

Delapan puluh puyuh berumur 4 minggu telah digunakan dalam penelitian ini untuk mengkaji profil lemak dan protein jaringan hati puyuh fase grower dan layer. Penelitinai ni telah dilaksanakan di Kandang Produksi Ternak Unggas, Fakultas Peternakan dan di Laboratorium Fisiologi Ternak dan Biokimia Fakultas Peternakan Universitas Padjadjaran. Penelitian menggunakan metode eksperimental dan pengambilan sampel dilakukan dengan metode purposif sampling (acak).  Data yang diperoleh akan di analisis dengan menggunakan rata-rata hitung, simpangan baku dan uji-T student untuk populasi yang tidak berpasangan. Hasil penelitian menunjukan bahwa terdapat perbedaan antara jumlah kadar lemak jaringan hati pada puyuh fase grower (27,06 %) dan fase layer (34,17 %). Jumlah kadar protein jaringan hati pada puyuh fase grower (78,59 %) dan fase layer (64,06 %)