Browsing by Author "Yildiz, Serhat"

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Forage Turnip (Brassica Rapa) Harvested in Different Phases of Vegetative Stage and Ensiled With the Additives of Molasses and Barley and the Effects of Additives on Silage Quality, in Vitro Digestibility, and Energy Content
(Tubitak Scientific & Technological Research Council Turkey, 2022) Yildiz, Serhat; Deniz, Suphi; Ozkan, Fatma; Kale, Cagri
This study was conducted to determine the silage quality, in vitro digestibility and energy content of forage turnip (Brassica rapa) ensiled with molasses or ground barley. Forage turnip was harvested at three different stages: the beginning, middle and end of the flowering period, and it was ensiled with no additive (control), 5% molasses or 4% ground barley. In the trial, pH, nutrient contents, ammonia nitrogen (NH3-N) contents, volatile fatty acid (VFA) contents, Fleig scores, in vitro digestibility and energy content were determined. It was observed that the effect of the vegetative stage on the difference between the groups was significant (p < 0.05). Accordingly, with the progression of the vegetative stage, the contents of dry matter (DM), organic matter (OM), ether extract (EE), neutral detergent fiber (NDF) and acid detergent fiber (ADF) showed an increase while a decrease was observed in crude protein (CP). The effects of the additives on the difference between the groups were found to be significant except for the CP parameter (p < 0.05). Molasses and barley addition to the silages increased DM, OM and EE contents and reduced the levels of NDF and ADF. With the progression of the vegetative stage, lactic acid (LA) and acetic acid (AA) values decreased while pH values and Fleig scores increased. The effects of additives were found to be insignificant for all parameters except for AA and Fleig scores. As the vegetative stage progressed, the dry matter digestibility (DMD), organic matter digestibility (OMD), digestible energy (DE), metabolic energy (ME) and net energy for lactation (NEL) values of the silages decreased significantly (p < 0.05). The addition of molasses or barley, compared to the control, resulted in a significant increase in the levels of DMD, OMD, DE, ME, and NEL (p < 0.05). In conclusion, in parallel with the progression of the vegetative stage, the DMD, OMD, DE, ME, and NEL values of the silages decreased, increasing with the addition of the additives, and the obtained silages were of high-quality as alternative quality roughage in ruminant feeding.
Research Article the Effects of Ensiling Sunflower With Different Ratios of Sugar Beet Pulp and Bacterial Inoculant Plus Enzyme Additives on Silage Quality, in Vitro Digestibility and Energy Content
(Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal, 2025) Yildiz, Serhat
This study investigated the effects of the addition of different additives to ensiled headless confectionary sunflower crops (HCSC) on silage quality, in vitro digestibility (IVD), and energy content. HCSC was pulled into pieces and mixed with sugar beet pulp (SBP) at ratios of 0, 10, 20, and 30%, and a bacterial inoculant+enzyme mixture (BI+E) was added to these groups at a ratio of 0 or 5 g.ton-1. The pH values; ammonia nitrogen (NH3-N) and volatile fatty acid (VFA) concentrations of the silages; and raw nutrient parameters, IVD, energy content, relative feed value (RFV) and Fleig scores were subsequently determined. SBP increased the OM and CP levels and lowered the DM, CA, EE, NDF, and ADF levels of the silages. BI+E increased the OM, CP, NDF, and ADF levels (p<0.05). The effect of the SBPxBI+E interaction on nutrient contents was significant only for the CP and EE values (p<0.05). SBP supplementation increased the AA and PA values. BI+E increased the values of all the parameters except for LA (p<0.05). The effects of the SBPxBI+E interaction on fermentation values were significant except for those of PA (p<0.05). Significant changes were observed in RFV and IVD by the addition of SBP, in Fleig scores by the addition of BI+E, and in IVD, RFV and Fleig scores by the interaction of SBPxBI+E (p<0.05). In the case of adding BI+E to HCSCs, it would be more appropriate to ensile it with a carbohydrate source such as SBP, and adding SBP to this material at a ratio of up to 30% is recommended.
Silage Quality, Nutrient Content and Relative Feed Value of Urea and Molasses Added Sweet Maize [ Zea Mays (L.) . ) Saccharata Sturt.] ] Silage
(Agricultural Research Communication Centre, 2024) Yildiz, Serhat
Background: study silage quality, (RFV), parameters and Fleig scores of sweet maize [ Zea mays (L.) . ) saccharata Sturt.] .] without the cob ensiled with urea or molasses. Methods: Plant parts remaining from the sweet maize whose cobs were harvested were ensiled with the addition of 1% urea and 5-10% molasses. In the liquid samples collected from the silages, pH values, ammonia nitrogen (NH3-N) and volatile fatty acid (VFA) concentrations were measured and the silage samples were subjected to crude nutrient analyses, RFV and Fleig score determination. Result: Significant differences were found among the groups in terms of their dry matter (DM), organic matter (OM), crude ash (CA), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) values. The difference between silage groups was significant in terms of NH3 3 and VFA values. In the analyses of Fleig scores, physical parameters and RFV results, the groups were found significantly different except for Fleig scores. In parallel with the increase in the concentration of urea used in the silage groups, there were reductions in Fleig scores, physical parameters and RFV values, while their CP levels increased. The molasses that was added to the silages led to a reduction in their silage pH, NH3--N and butyric acid (BA) values and an increase in their lactic acid (LA) values. It was concluded that the additives used in this study contributed positively to the quality of the silages, all silages with additives were quality silages and they could be used as an alternative quality roughage resource in feeding ruminants.