Demirel, M., Yilmaz, I., Deniz, S., Kaplan, 0. and Altdeniz, H. 2003. Effect of addition of urea or urea plus molasses to different corn silages harvested at dough stage on silage quality and digestible dry matter yield. J. Appl. Anim. Res., 24: 7-16.To study the effects of 0.5% urea. aiid 0.5% ureaplus 4% inolasses r~. ' Materials and MethodsArifiye, Frassino, Rx-947 and 3394 corn cultivars were harvested at dough stage, chopped and three treatment groups: control, with 0.5% urea and with 0.5% urea plus 4% molasses were formed. Total 36 silage samples (4 cultivars, 3 treatment groups and 3 replications) were put into one kg jars and pressed. Lid of jars were punched anrl lid side of jars were put on floor for 48 h to drain out excess water. Jars were opened after 90 days. pH of silages was measured as soon as jars were opened. Using Whatman 64 filter paper, filtered silagc liquids and silage fluid were stored in deep freezer until they werc analyzed. Organic acid analyses were made according to method of Leventini et al. (1990) using gas chromatography.Crude protein analyses of silage samples were made by using wet samples. Dry matter (DM), crude protein (CP) and crude ash were analyzed by Weende method (I3ulgurlu and Ergiil, 1978). Van Soest and Robertson (1979) methods were applied to analyze AD17 and NDF. Tilley and Terry's (1963) methods (modified by Marten and Barnes, 1980) were used to Zeterinine i i i r:ilw dry mattcr digestibility (IVDMD) of silage samples. Ruininal ingesta from an Addition of urea to corn silage 9 alfalfa-fed ruminally fistulated ram was hand-collected and strained through four layers of cheesecloth to provide the inoculate for IVDMD determination.Results were analyzed by analysis of variance (SAS, 1998).Treatment means were separated with Duncan test at PcO.05 (Duzgunes, et al., 1978). Results and DiscussionProximate composition of different silages differed by cultivars and supplements, whereas, their interactions were significant for DM, CP and ADF only ( Cultivars' effect on per cent NDF (P

This study planned to determine the differences among nutrient composition, in vitro digestibility, energy content, digestible dry matter and organic matter yields of barley forage harvested at three different stages of maturity. Each vegetation period (heading stage, seed formation stage and mature stage) was randomly assigned to 5 replication from 1 square meter area and fifteen samples were harvested in total. DM, ADF (p<0.001), and NDF (p<0.05) contents were different in each stages of barley forage. In vitro dry matter (IVDMD), organic matter digestibility (IVOMD), metabolizable energy (ME), and net energy for lactation (NE L ) values of samples were determined to be lower than the other two stages at the mature stage (p<0.05). Yield parameters of barley were significantly affected by vegetation period (p<0.001). It can be concluded that all three vegetation period had significantly higher digestibility. Digestible DM, OM and energy yields were higher when harvested at the mature stage of vegetation.

There are small number of tables that show digestibility and energy contents of compound feeds produced by feed factory in different regions of Turkey. Thus, in this paper, four different compound feed types (dairy cattle, beef cattle, calf and lamb growing feeds), totalling 78 compound feeds were analysed to determine their feeding value, dry matter (DM), organic matter (OM) digestibility and energy content (digestible energy (DE), metabolisable energy (ME) and net energy for lactation (NEL). As a result of this study, the crude fiber (CF) levels were higher than standard values in calf and lamb compound feeds and beef cattle compound feeds; however, in the dairy cattle and calf and lamb compound feeds, the crude protein (CP) values were lower than standard values. These findings are considered highly important for the region's animal feeding. According to our results, the compound feeds for dairy cattle and lamb being used for ruminant nutrition in Diyarbakir Province of Turkey were found to have low nutrient qualities; however, in the calf feed both the metabolisable energy level and nutrient quantities were low. Keywords IntroductionTo increase the healthful eating of animal products as an important part of our society, it is necessary to feed the animals in a rational way. In particular, the quantity and quality of proteins in animal feed are important. The feeding values and energy content of animal feeds vary according to, soil conditions, climate and processing methods etc. There are a small number tables that show digestibility and energy contents of compound feeds produced in different regions of Turkey. Low-quality feedstuffs can cause serious nutritional disorders in animals (Çelik et al., 2003;Ergün et al., 2004;Baran, 2014). In order to prevent health problems that arise from imbalanced and insufficient nutrition, it is essential to use a higher quality of animal products to manufacture feeds in animal nutrition (Akdeniz et al., 2005;Baran, 2014;Oğuz et al., 2016).The nutrient content of feed materials used in compound feed production has been shown in the tables grouped in different sources (Dale and Batal 2005;Baran et al., 2008a). Baran et al. (2008b), working in the Diyarbakir province, studied the nutritional content of compound feeds for ruminants. Excluding beef cattle feed from the other compound feeds, they found that the feeds below the declared level of crude protein, while the crude fiber content was higher than declared.There is a close relationship between the digestibility of feeds in terms of organic matter digestibility and energy (Turgut et al., 2002;Denek and Deniz 2004;Ergün et al., 2004). A fast and accurate method for determining the nutritional value of compound feed is of great importance. The determination of feed value is currently made through chemical and biological analyses. However, chemical analyses cannot adequately measure the real value of animal feeds; the actual feed quality depends on an evaluation of the nutrients in the context of the animals being fed (Kara ...

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