Browsing by Author "Karsli, M.A."
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Article The Determination of Planting Density on Herbage Yield and Silage Quality of Jerusalem Artichoke (Helianthus Tuberosus L.) Green Mass(KAFKAS UNIVERSITY, 2009) Karsli, M.A.; Bingöl, N.T.The aim of this study was to determine green mass yield, silage quality prepared from green mass, nutrient content and digestibility of Jerusalem artichoke (Helianthus tuberosus L.) planted at varying planting densities. Experiment was designed as split plot with four replication and four different plant densities were tested. Planting densities were 70×50 cm (Control), 30×50 cm (Group I), 50×50 cm (Group II), and 85×50 cm (Group III). Chopped green mass were utilized as both silage prepared into 1 L jar-silo and dried original samples. pH of silages were 4.54-4.81 (P=0.5). Lactic acid, acetic acid, propionic acid, and ammonia-N levels were 2.12-4.30%, 1.97-2.32%, 0.29-0.41%, 0.82-1.14%, respectively (P<0.05). Dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), in vitro organic matter digestibility (IOMD), metabolic energy (ME) Mcal/kg values were 29.99-33.28% and 37.05-39.40%; 85.41-85.79% and 86.74-87.88%; 8.58-9.59% and 9.32-11.19%; 35.58-42.53% and 35.19-37.05%; 23.94-30.12%and 23.51-25.08%; 51.71-54.67% and 59.15-63.13%; 1.87-2.012% and 2.139-2.284% for silage and original samples, respectively. Dry matter yields of Jerusalem artichoke ranged from 297.3 to 768.1 kg/da (P<0.01). In conclusion, Jerusalem artichoke as an alternative feedstuff has a forage yield and nutrient content similar to high quality forage. Increasing planting density quadratically increased forage yield. The highest yield was obtained with 50×50 cm planting density. In general, Jerusalem artichoke silage has lower nutrient content, in vitro organic matter digestibility and energy value compared with original sample. Based on this data, Jerusalem artichoke green mass should be preferred to feed to animals as green forage, but can be fed to animals as silage if necessary.Article Effects of Microbial Phytase on Animal Performance, Amount of Phosphorus Excreted and Blood Parameters in Broiler Fed Low Non-Phytate Phosphorus Diets(2009) Bingol, N.T.; Karsli, M.A.; Bolat, D.; Akca, I.; Levendoglu, T.The aim of the current study was to evaluate the effects of a microbial phytase on broiler performance, mineral retention and mineral excretion in broilers fed corn-soybean meal-barley based diet with low available phosphorus level. A total of 300 one day-old Ross 308 broilers were allotted into 5 treatment groups consisted of 4 subgroups. This basal diet (negative control) was supplemented with enzyme (Rovabio; control). Then, control diet was supplemented with 500 g ton-1 microbial phytase (Rovaphos; 500 g phytase), 1000 g ton-1 microbial phytase (1000 g phytase) and 1500 g ton-1 microbial phytase (1500 g phytase). Body weight of broiler fed low available phosphorus diets supplemented with phytase were significantly higher (p<0.05) compared with broilers fed low available phosphorus diet without phytase throughout the experiment starting from second week of experiment. Broilers fed negative control diet had significantly less carcass weights compared with other groups (p<0.05). Addition of phytase linearly increased serum P levels and decreased amount of P excreted in feces. It can be concluded that dietary available phosphorus can be reduced up to 30% in broiler diet with 1000 g phytase/ton supplementation without affecting animal performance. © 2009 Academic Journals Inc.Article Evaluation of Berseem Clover in Diets of Ruminants Consuming Corn Crop Residues(American Society of Animal Science, 1999) Karsli, M.A.; Russell, J.R.; Hersom, M.J.Berseem clover hay was compared to alfalfa hay provided at 0, 25, and 50% of the diet DM in mixtures with corn crop residues to wether lambs. Berseem clover hay had lower (P < .05) concentrations of NDF, ADF, and CP than alfalfa hay. The digestibility of DM, DMI, and N balance did not differ (P > .05) between diets containing alfalfa hay or berseem clover hay. To evaluate stockpiled berseem clover as a supplement for grazed corn crop residues, berseem clover and oats were incorporated into a corn-corn-oat/berseem clover crop rotation for 3 yr in replicated 6.1-ha fields. Two cuttings of oat-berseem clover hay were harvested each summer before forage was stockpiled for winter grazing. After corn grain harvest, multiparous and primiparous crossbred cows in midgestation were allotted to each field at 1.01 ha/cow to strip-graze corn crop residues with or without stockpiled berseem clover or allocated to replicated drylots for 98 to 140 d. Each group was offered alfalfa-grass hay as large bales to maintain a mean body condition score of 5 on a 9-point scale. Mean rates of total and digestible OM disappearance from grazed and ungrazed field areas of berseem clover and corn crop residues did not differ over the 3 yr. In vitro organic matter disappearance (IVOMD) tended to decrease more rapidly (P = .13) and NDF and ADF concentrations increased more rapidly (P < .05) in berseem clover than in corn crop residues. Seasonal BW change did not differ (P > .05) between winter management systems in any year, and seasonal body condition score changes did not differ (P > .05) between cows grazing corn crop residues and berseem clover and those maintained in a drylot in yr 2 and 3. Cows grazing corn crop residues with or without berseem clover required less (P < .05) hay than those maintained in dry-lot. Although the effects of berseem clover hay supplementation on the intake and digestibility of corn crop residues do not differ from alfalfa hay, the nutritional value of stockpiled berseem clover decreases rapidly during winter, limiting its value as a standing supplement for corn crop residues in late winter.