Refinar búsqueda
Resultados 41-50 de 188
Effect of Storage Time on Nutrient Composition and Quality Parameters of Corn Silage
2016
Betül Zehra Sarıçiçek | Birgül Yıldırım | Zahide Kocabaş | Emel Ozgumus Demir
This study was carried out to determine the effects of storage duration on nutrient composition and silage quality parameters. Corn was used as silage material. Corn (31.41% dry matter) was harvested at the dough stage and fermented for 90, 104, 118, 132, 146, 160, 174, 188 and 202 days in three trench silos. The samples were brought to laboratory every 14 days. This process was repeated 9 times. After the 132th day, whereas silage crude protein (CP), ether extract (EE), ash and crude fiber (CF) contents decreased, nitrogen free extract (NFE) content increased. Lactic acid concentration of corn silage increased until the 118th day but decreased between the 118th and the 160th days. On the contrary, of decrease in LA concentration, acetic acid concentration increased depending on storage time. Ammonia nitrogen and CO2 concentration of silage increased decreased with progressing time. Storage time had significant influence on Flieg scores. The lowest score was found between days the 104th-118th. In this research, it was observed that there was a change in silage nutrient contents and fermentation characteristics with increasing storage time.
Mostrar más [+] Menos [-]Hydroponic Systems in Forage Production
2016
Ünal Kılıç
Hydroponic farming system (HFS) is used to meet the roughage requirements of ruminants as an alternative method. In the system, forage production is achieved all over the year and germinated grains such as barley, wheat and oat, are used as fresh forage sources. In the present study, HFS, about which there are limited information, was discussed with its advantages and disadvantages. Furthermore, the nutritive values of fresh forages produced in HFS system and also their using possibilities in animal nutrition were discussed. It was understood that HFS can be used for meeting forage requirements of ruminants if it runs effectively.
Mostrar más [+] Menos [-]Physiological Responses of Potato to Short-Term Drought Treatment
2016
İlknur Tındaş | Ufuk Demirel
The study aimed to identify physiological response of potato to drought. For this aim, a drought experiment was carried out by using two different potato varieties, cv. Desiree and Russet Burbank, under environmentally controlled greenhouse conditions. Drought treatment was initiated at 45 days after emergence (early tuber bulking period) by withholding irrigation for 10 days. Physiological traits such as stomatal conductance, transpiration rate, photosynthetic rate, chlorophyll index, leaf temperature, proline content, malondialdehyde (MDA) accumulation and hydrogen peroxide (H2O2) accumulation, in addition, some yield components average tuber weight, number of tubers and plant tuber yield were evaluated in the study. While the first significant decline in stomatal conductance, transpiration rate, and photosynthetic rate of both varieties was occurred at the 5th day of withholding irrigation, the highest decline was observed at 9th and 10th days of withholding irrigation. Proline content in both varieties increased two times at 10th day of withholding irrigation, however, H2O2 accumulation was not changed significantly by drought treatment. Even though MDA accumulation was increased in both varieties under drought stress conditions, the increase was significant in Desiree whereas, it was not significant in Russet Burbank. In addition, while drought treatment did not change the plant tuber yield in both varieties, it caused to a significant decline in average tuber yield of Russet Burbank, being an important trait for marketable tuber yield.
Mostrar más [+] Menos [-]A Case of Dystocia Induced by Misuse of Oxytocin in a Boerboel Bitch
2016
Khalid Talha Biobaku | Lukman Oladimeji Raji | Ganiu Jimoh Akorede | Ismail Ayoade Odetokun | Saliu Akanni Ameen
A two year old boerboel bitch with dark greenish vaginal discharge and history of over 24 hours of difficult labor was presented to the Veterinary Teaching Hospital University of Ibadan for clinical examination and treatment. The owner had wrongfully given oxytocin after observation of signs of parturition. Following careful physical and clinical examinations of the bitch by Veterinary doctors, dystocia due to obstruction of maternal birth canal by a dead fetus was diagnosed. Treatment regimen was by digital manipulation which stimulated cervical dilatation and careful delivery of dead fetus via the vagina. Thereafter, oxytocin was administered to augment the bitch’s weak uterine contraction. Four weak puppies were delivered out of which three survived following adequate treatment.
Mostrar más [+] Menos [-]The Volumetrical, Geometrical and Frictional Properties of White Mulberry (Morus alba L.) Fruits
2016
Ebubekir Altuntaş
The volumetrical, geometrical and frictional properties of white mulberry fruits (Morus alba L.) determined at a moisture content of 13.89% (d.b.). The mean values of the fruit mass, porosity, fruit volume, fruit and bulk densities values of white mulberry fruits were found as 1.06 g, 75.3%, 0.53 cm3, 1911.7 kg/m3 and 454.0 kg/m3, respectively. The mean values of the surface area, sphericity and geometric mean diameter and were 4.16 cm2, 71.02% and 11.5 mm, respectively. The angle of repose of the white mulberry fruits was found as 22.1 and also, the mean values of dynamic and static coefficient of friction against plywood, chipboard, galvanized steel, rubber and mild steel surfaces were determined and the highest dynamic and static coefficients of friction values of white mulberry fruits were found for rubber surface.
Mostrar más [+] Menos [-]Effect of Sous Vide Cooking Method on Nutritional Values of Vegetables
2016
Serap Coşansu | Özlem Kıymetli
Sous vide is a cooking method in which food is heat processed after vacuum packaging in heat stable pouches. Meat, chicken, fish and vegetables can be cooked by this method; even meals containing these ingredients can be preserved by heat processing after precooking and vacuum packaging steps. Meanwhile sous vide cooking is a preservation method that the product is cooled rapidly after heat processing and can be stored for long periods. By this method, food can be cooked in vacuum packed without losing its flavour, taste and nutritional value. In this review, the effects of sous vide cooking on the major nutrients of vegetables such as antioxidant compounds and vitamins will be mentioned.
Mostrar más [+] Menos [-]Comprehensive Risk Assessment of Heavy Metal Accumulation in Surface Sediment of Lake Tortum Based on Ecological Indices
2016
Serkan Kürker
In this study, ecological risks arising from the accumulation of some heavy metals in surface sediments of Lake Tortum are discussed based on the use of ecological indices, such as enrichment factor (EF), contamination factor (CF), pollution load index (PLI), potential ecological risk index (PER) and the mean probable effect concentration quotient (mPEC-Q). Sediment samples were collected from six different sites using Van Veen grab and heavy metal and organic carbon content of sediments were determined. Results testify to the existence of minimal to moderate contamination in lake sediment. The highest value for the enrichment factor pertains to Cd caused by the use of fossil fuels in settlement areas in the lake catchment. PLI and PER estimations, on the other hand, reveals the presence of low heavy metals-induced ecological risk in lake sediments. Ranging between 15% and 29%, mPEC-Q values are indicative of the fact that Lake Tortum is a low-moderate priority site in terms of toxicity level caused by heavy metals.
Mostrar más [+] Menos [-]Extraction and Characterization of Gelatin from Mackerel (Scomber scombrus) and Sea bass (Dicentrarchus labrax) Bones
2016
Yasemen Yanar | Mehmet Gökçin
The aims of this study were to determine the physicochemical properties of extracted gelatins from mackerel (Scomber scombrus) and sea bass (Dicentrarchus labrax) bones and compare with those of commercial fish and bovine gelatins. The yield of gelatin obtained from the bone of mackerel and sea bass were 5.98 and 6.20%, respectively. Two extracted gelatins showed higher protein content, lower moisture content compared to both commercial gelatins, indicates that the gelatin has considerably high purity. Melting temperatures of mackerel and sea bass bone gelatins were 25.5 and 23°C, respectively. Mackerel bone gelatin was yellow in appearance and higher L* value than both commercial gelatins. It can be concluded from the present study that mackerel and sea bass bone are a prospective source to produce gelatin in good yield with desirable functional properties comparable to commercially available mammalian and fish gelatins.
Mostrar más [+] Menos [-]The Threat of Ochratoxin A in Poultry Nutrition
2016
Emrah Güngör | Aydın Altop | Güray Erener
Ochratoxin A is a toxic substance coming up with growing up of some species of Aspergillus and Penicillium at feedstuffs. Diseases and deaths can occur if this toxic substance is consumed by animals. Ochratoxin A can contaminate easily feedstuffs of mixed feeds while producing, harvesting and storing period and pose a serious threat for world and Turkey considering existing rate in feed and feedstuffs. Moreover taking account of passing to animal tissues, ochratoxin A pose a serious risk for human health. Regarding this, ochratoxin A has negative effects on human such as disorders of kidney and reproductive organs. In addition there is various methods to eliminate this damages made by ochratoxin A. In this review, existing of ochratoxin A in poultry feeds, the negative effects on poultry, transition to tissues and practices that can ease the negative effects were summarized.
Mostrar más [+] Menos [-]Effects of Temperature on Time Dependent Rheological Characteristics of Koumiss
2016
Serdal Sabancı | Ömer Çokgezme | Derya Tezcan | Mutlu Cevik | Filiz İçier
The rheological properties of koumiss were investigated at different temperatures (4, 10, and 20°C). Experimental shear stress–shear rate data were fitted to different rheological models. The consistency of koumiss was predicted by using the power-law model since it described the consistency of koumiss best with highest regression coefficient and lowest errors (root mean square error and chi-square). Koumiss exhibited shear thinning behavior (n
Mostrar más [+] Menos [-]