Person: SUCU, EKİN
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
SUCU
First Name
EKİN
Name
4 results
Search Results
Now showing 1 - 4 of 4
Publication In vitro studies on rumen fermentation and methanogenesis of different microalgae and their effects on acidosis in dairy cows(Mdpi, 2023-03-01) Sucu, Ekin; SUCU, EKİN; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü; 0000-0003-1470-2751; AAG-8331-2021Two in vitro studies were carried out on nonlactating dairy cows. Experiment 1 compared the methanogenesis and rumen fermentation parameters of various microalgae (Spirulina platensis, Chlorella vulgaris, and Schizochytrium spp.) and protein feeds (sunflower meal, soybean meal, and alfalfa hay) with monensin (MON). Rumen fermentation parameters were determined by an in vitro gas production system. Experiment 2 compared the ability of three microalgae to prevent acidosis. They were tested for 6 h against oat straw (100 mg) and MON (12 g/mL) to ameliorate ruminal acidosis caused by the addition of glucose (0.1 g/mL) as a fermentable carbohydrate with rumen fluid. In experiment 1, there were variations in the nutrient content of microalgae and protein sources. The dry matter content of the substrates ranged from 90 to 94%, and the organic matter content ranged from 82 to 88%, with Schizochytrium spp. having the highest. Protein content in algae and protein feeds ranged from 18-62% of dry matter (DM) to 16-48% DM, with S. platensis and C. vulgaris having the highest. The ether extract of Schizochytrium spp. (45.5% DM) was the highest of any substrate. In vitro rumen fermentation revealed that protein feeds increased the cumulative gas production at the highest level while MON caused a decrease. Ruminal pH was found to be higher in MON (6.95) and protein feeds (6.77-6.81) than in algae (6.37-6.50). In addition, in terms of metabolizable energy and digestible organic matter, protein feeds outperformed algae. The MON produced the least amount of methane (CH4) of any substrate, but Schizochytrium spp. demonstrated potential for CH4 reduction. In these groups, the decrease in CH4 production was accompanied by a decrease in total volatile fatty acids, acetate, and the acetate-to-propionate ratio, but an increase in propionate. Experiment 2 revealed MON as the most effective cure for controlling acidosis. However, C. vulgaris and Schizochytrium spp. had an effect on medium culture pH and demonstrated potential for acidosis prevention. This study found that algae can influence ruminal fermentation, have the potential to reduce CH4 production, and may reduce acidosis incidence rates. These assumptions, however, must be validated through in vivo studies.Publication The effects of hazelnut husk supplementation on silage quality, deterioration, and in vitro digestion parameters in second crop maize(Ankara Üniversitesi, 2023-01-01) Okumuş, Ahmet; Sucu, Ekin; SUCU, EKİN; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü; 0000-0003-1470-2751; AAG-8331-2021This research investigates the effects of hazelnut husk on the low dry matter (DM) maize silage quality, microbial profile, deterioration, fiber components, and digestion parameters. Second crop maize was harvested at the milk stage of maturity (26.61% DM) and ensiled in laboratory silos with or without ground hazelnut husk. A total of 18 jars of silage were made utilizing two treatments (control silage and 15% hazelnut -contained silage), three different opening dates, and three replicates. All silage analyses were completed in all of the opening periods. Hazelnut husk increased the (p<0.05) silage DM, pH, ash, protein, and cellulose fractions content while only decreasing (p<0.05) hemicellulose. The lactic acid, propionic acid, acetic acid, and butyric acid in silages were reduced (p<0.05) by the hazelnut husk. The addition of hazelnut husk to the silages increased (p<0.05) the population of lactobacilli but had no influence (p>0.05) on the yeast -mold population. Hazelnut husk increased (p<0.05) aerobic stability in maize silages. Hazelnut husks reduced in vitro gas production value, digestible organic matter, metabolic energy, and net energy lactation values, but increased protozoa in the rumen (p<0.05). The hazelnut husk demonstrated a potential hygroscopic property in low DM maize silage by increasing silage DM and improving fermentation efficiency, as well as air stability during feedout.Publication Effects of algae derived pure β-Glucan on in vitro rumen fermentation(Ankara Üniversitesi, 2023-01-01) Sucu, Ekin; Sonat, Füsun; SUCU, EKİN; SONAT, FÜSUN; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Fizyoloji Anabilim Dalı; 0000-0003-1470-2751; AAG-8331-2021; AAG-8396-2021The major purpose of this study was to determine how varying doses of algae derived pure r3-glucan affected in vitro gas generation, volatile fatty acid (VFA) concentrations, methane production, and protozoa populations. Different doses of r3-glucan [i.e., 0, 50, 100, 150, and 200 mg/kg feed (DM basis)] were applied to corn silage as experimental treatments. After 6-96 hours of incubation, the dose of 200 mg/kg of DM r3-glucan reduced total gas production compared to control (P<0.01). The concentration of total VFA decreased quadratically (P<0.01) as the amount of r3-glucan inclusion decreased (except for 200 mg/kg DM) when compared to the control group. The total VFA concentration was found to be the lowest (P<0.01) at 50, 100, and 150 mg/kg DM r3-glucan than the other doses. Propionate and butyrate concentrations increased linearly (P<0.01) in the r3-glucan supplemented groups, except for the 50 mg/kg DM dosage. When compared to the control group, all doses of r3-glucans lowered acetate and the acetate: propionate ratio linearly and quadratically (P<0.01). The addition of r3-glucans reduced the number of protozoa linearly (except at the lowest dose) and reduced the methane generation linearly and quadratically (P<0.01). The concentration of NH3-N did not differ (Linear, P=0.12; Quadratic, P=0.19) between treatments. The key findings were that r3-glucan acted as a rumen modulator, and levels of more than 50 mg/kg of feed DM functioned as a potential methane regulator in the rumen due to reduced acetate and acetate to propionate ratio.Publication Effects of rumen-protected methionine and lysine on milk yield and milk composition in holstein dairy cows consuming a corn grain and canola meal-based diet(Tubitak Scientific & Technological Research Council Turkey, 2022-01-01) Gülgün, Emrah; Sucu, Ekin; SUCU, EKİN; Bursa Uludağ Üniversitesi/Ziraat Fakültesi.; 0000-0003-1470-2751; AAG-8331-2021Methionine (Met) and lysine (Lys) are thought to be the two most important amino acids for lactation performance. Met and Lys dietary supplementation can thus be an effective approach to improve amino acid balance for lactation performance, particularly in early lactation. The purpose of this study was to determine how rumen-protected (RP) Met + Lys affect milk production, milk composition, and feed efficiency in primiparous Holstein dairy cows fed a corn grain and canola meal-based diet for 60 days (8.5 weeks) following calving. Two hundred primiparous Holstein dairy cows were randomly assigned to one of two dietary treatments based on their expected calving date: 1) a basal diet; or 2) a basal diet supplemented with RP Met + Lys. Milk production and feed consumption were tracked on a daily basis, and milk components were tested once a week. During the trial, drinking water was always available in front of the dairy cows. The RP Met + Lys considerably increased (p 0.05) milk yield (+ 2.20 kg/d), fat corrected milk yield (+ 2.18 kg/d) and feed efficiency but had no effect on dry matter intake (p 0.05) the proportion of milk fat, but had no effect on the other milk composition markers (p 0.05). Except for milk crude protein, the yields of fat, true protein, lactose, and energy in milk were higher (p < 0.05) in cows fed RP Met + Lys vs. control cows. The results indicate that supplementing with RP Met + Lys after the first calving has a considerable impact on subsequent milk and milk fat production, as well as the yield of the majority of milk nutrients.