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.
Fish and other fishery products are one of the important food sources in fulfilling human nutritional needs. Fish contains nutrients that are good for the body and are easily digested by the body. Fish is a source of animal protein that comes from the water. Fish is rich in nutritional content, such as protein, fatty acids, vitamins and minerals. Fish is a source of long chain fatty acids, such as omega-3. Omega-3 fatty acids from marine and fresh fish are higher than those from land and vegetable animals. The potential for fish availability is more than other fishery products, so that to meet the nutritional needs of the body can be done by consuming fish as needed. Public knowledge about the importance of nutritional content in fish for health is still low, so there is a need for knowledge about the nutritional content of fish and their health benefits. This review explains the nutritional content of seawater and freshwater fish and its benefits for health.
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.
Tunicate, a filter-feeder in seawater, is able to accumulate high amount of metals using intracellular polymer matrices. The woven pyrogallol structures of tunichrome, a small peptide contained in tunicate's blood cells, is believed to be responsible for selective metal sequestration in tunicates from seawater. However, the intriguing tunichrome matrix is difficult both to harvest from the tunicate and to synthesize massively due to the extreme oxidation sensitivity of the pyrogallol moiety which limits the study scope. Here, we succeeded to mimic tunichrome by conjugating two cheap and naturally occurring components: pyrogallol-5-carboxylic acid (gallic acid) and chitin nanofiber. A tunicate-mimetic infiltration matrix of surface-tailored chitin nanofibers with pyrogallol moieties (CGa) demonstrated the versatility of this strategy in generation of ingenious filtration material, especially for unprecedented fine and clean gold recovery inside of the tunicate-mimetic infiltration matrix (>99%, 533 mg gold per gram weight), which exceeds that of the presently most popular materials. Complexation between pyrogallol on the nanofiber and gold was similar to that of a tunichrome's metal sequestration. Extended X-ray absorption fine structure (EXAFS) spectroscopy and data-fitting elucidated the decreased coordination numbers for Au-Au nearest neighbors, demonstrating that gold coordinated to pyrogallol units, followed by an intramolecular association of Au. A catalytic reduction of 4-nitrophenol mediated by the tunicate-mimetic matrix with harvested gold revealed excellent recyclability up to 30 cycles (∼95% reduction), which together with methylene blue reduction and antimicrobial performances indicates the versatile characteristics of sustainable processes by the tunichrome mimetics. This strategy opens the door for fast-developing new biomimetic alternatives for precious metal recovery, which is not restricted to gold and can offer a tool for multifaceted soft/hard nanomaterials.
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 %)
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