Browsing by Author "Meral, Yavuz"
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Item Besi sığırlarının bitirme dönemi rasyonlarında pirinç kepeğinin kullanım olanakları(Uludağ Üniversitesi, 2015-11-30) Meral, Yavuz; Biricik, Hakan; Uludağ Üniversitesi/Sağlık Bilimleri Enstitüsü/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.Bu araştırma, besi sığırlarının bitirme dönemi rasyonlarındaki mısırın, belirli oranlarda pirinç kepeği ile ikamesi sonucu, besi performansı, bazı kan ve karkas parametreleri üzerine etkilerinin incelenmesi amacıyla gerçekleştirilmiştir. Araştırmada hayvan materyali olarak 44 baş erkek Holstein ırkı sığır kullanılmıştır. Hayvanlar canlı ağırlıklarına göre 4 farklı gruba ayrılarak, farklı düzeylerde pirinç kepeği içeren rasyonlar ile beslenmişlerdir. Kontrol grubundaki hayvanlara verilen rasyonlar pirinç kepeği içermezken, Pirinç 1 (P1), Pirinç 2 (P2) ve Pirinç 3 (P3) gruplarındaki hayvanlara verilen rasyonlarda bulunan mısır sırasıyla %12.74, %21.20 ve %30.29 miktarlarında pirinç kepeği ile ikame edilmiştir. Araştırma boyunca düzenli olarak kaydedilen yem tüketimi, 0, 30, 66 ve 95. günlerde belirlenen canlı ağırlık ölçümleri ve bu parametrelerden elde edilen yemden yararlanma oranları ile denemenin 0, 66 ve 95. günlerinde ultrason yardımıyla alınan görüntülerin analizleri sonucunda da kontrol ve deneme grupları arasında deri altı yağ kalınlığı, M. Longissimus dorsi derinliği, ve 95. günde kas içi yağ dağılımı parametreleri bakımından önemli farklılık tespit edilmemiştir (P>0.05). Aynı tarihlerde araştırma hayvanlarından alınan kan örneklerinde gerçekleştirilen analizlerin sonucunda; serum glikoz, alkalin fosfataz, büyüme hormonu, insülin benzeri büyüme faktörü-I, leptin, triiyodotironin düzeyleri bakımından kontrol ve deneme grupları arasında önemli düzeyde fark saptanamamıştır (P>0.05). Araştırmanın 95. gününde kan üre nitrojeni, serum konjuge linoleik asit ve tiroid stimülan hormon, 66. ve 95. günlerinde ise serum aspartat aminotransferaz düzeyleri bakımından araştırma grupları arasında önemli farklılıklar tespit edilmiştir (P<0.05). Bu araştırmanın sonuçlarına göre, bitirme döneminde bulunan besi sığırlarının rasyonlarındaki mısır, besi performansı ve ultrason ile belirlenen karkas parametreleri olumsuz yönde etkilenmeksizin %30.29 düzeyine kadar pirinç kepeği ile ikame edilebilmektedir.Publication Effects of a short-term supplementation with liquid oligofructose-enriched inulin on faecal characteristics and selected serum metabolites of healthy saanen kids(Kafkas Üniversitesi, 2015-09-01) Kara, Cağdaş; Meral, Yavuz; Yibar, Artun; Biricik, Hakan; Orman, Abdulkadir; Deniz, Gülay; Yeşilbağ, Derya; Çetin, İsmail; Gençoğlu, Hıdır; Türkmen, İsmet; KARA, ÇAĞDAŞ; Meral, Yavuz; YIBAR, ARTUN; BİRİCİK, HAKAN; ORMAN, ABDÜLKADİR; DENİZ, GÜLAY; YEŞİLBAĞ, DERYA; ÇETİN, İSMAİL; GENÇOĞLU, HIDIR; TÜRKMEN, İBRAHİM İSMET; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Gıda Hijyeni ve Teknolojisi Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı.; 0000-0001-7051-1349; 0000-0001-9138-4422; AAH-4032-2021; ABE-9200-2022; AAG-9134-2021; AAK-5370-2020; HJZ-4775-2023; FFA-7187-2022; DGQ-7149-2022; ISX-0239-2023; JIM-4044-2023; EDZ-7334-2022The objective of this study was to evaluate the effects of a short-term supplementation with liquid oligofructose-enriched inulin on faecal characteristics and selected serum metabolites of healthy Saanen kids. Twenty-four kids (44 days of age) were allotted to a control (CG) or an experimental (EG) group. Each group consisted of 12 kids. Each kid in EG was supplemented with 0.8 and 1.6 g/d of oligofructose-enriched inulin from day 1 to 5 and from day 6 to 15, respectively. Liquid oligofructose-enriched inulin supplementation did not affect faecal score and pH (P > 0.05). Faecal acetate, propionate and total SCFA concentrations did not differ (P > 0.05) between CG and EG, whereas faecal butyrate concentration was higher (P< 0.05) in kids supplemented with liquid oligofructose-enriched inulin. Due to trophic and antiinflammatory effects of butyrate, we hypothesize that oligofructose-enriched inulin supplementation may be useful to help tissue repair and regeneration, particularly during an intestinal infection. Faecal Lactobacillus, Bifidobacterium and Clostridium perfringens concentrations were not affected by oligofructose-enriched inulin supplementation (P > 0.05). Daily dose of oligofructose-enriched inulin tended to increase serum glucose concentrations (P < 0.09, P < 0.08). Serum urea and albumin concentrations were similar between groups (P > 0.05). Serum total protein and globulin levels were lower in EG compared with CG (P < 0.05). During the experimental period lasting for 15 days, there were no differences in growth performance parameters between groups (P > 0.05).Item Effects of dietary rosemary and oregano volatile oil mixture on quail performance, egg traits and egg oxidative stability(Taylor & Francis, 2013-04) Yeşilbaǧ, Derya; Gezen, Şerife Şule; Biricik, Hakan; Meral, Yavuz; Uludağ Üniversitesi/Veterinerlik Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; 0000-0003-0708-3833; B-1526-2018; AAH-4032-2021; AAK-5370-2020; 9246817500; 9239300200; 6602982111; 557866094001. This study was conducted to determine the effects of volatile oil mixture on quail laying performance, egg traits and egg malondialdehyde (MDA) concentration. 2. A total of 260 Pharaoh quails (Coturnix coturnix Pharaoh) aged 6 weeks were equally divided into 5 groups of 65 (4 replicates of 13 quails each). The mixture of diets was as follows: a control treatment with 0mg volatile oil/kg of diet; (1) 200mg/kg rosemary volatile oil; (2) 200mg/kg oregano volatile oil; (3) 40mg/kg rosemary volatile oil plus 160mg/kg oregano volatile oil (ratio 20:80) and (4) 160mg/kg rosemary volatile oil plus 40mg/kg oregano volatile oil (ratio 80:20). The diets were prepared fresh for each treatment. The experimental period lasted 10 weeks. 3. At the end of the experiment, there were no significant differences amongst the groups in body weight, egg weight, egg mass, egg shape index, Haugh unit, egg shell thickness or egg shellbreaking strength. 4. Diets containing rosemary volatile oil increased the egg production significantly. Feed intake significantly increased in the groups containing volatile oil mixture (groups 4 and 5). The inclusion of rosemary volatile oil at 200mg/kg improved feed efficiency. 5. Egg albumen and egg yolk index values showed significant increases in the group given diets containing rosemary volatile oil. Egg yolk colour became darker with the addition of rosemary and oregano volatile oil. The treatment group had lower egg yolk MDA concentration than the control group. 6. It is concluded that, alone or in combination, rosemary and oregano volatile oil can be used in quail diets without adverse effects on the measured parameters. Inclusion of rosemary and oregano volatile oil in quail diets enhanced the antioxidant status of eggs.Item Effects of inulin supplementation on selected faecal characteristics and health of neonatal Saanen kids sucking milk from their dams(Elsevier, 2012-12) Kara, Çağdaş; Orman, Abdülkadir; Gençoğlu, Hıdır; Kovanlıkaya, Arda; Meral, Yavuz; Çetin, İrene; Yibar, Artun; Kasap, Sevim C.; Türkmen, İbrahim İsmet; Deniz, Gülay; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Zooteknik Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Gıda Hijyeni ve Teknolojisi Bölümü.; Uludağ Üniversitesi/Veteriner Fakültesi/İç Hastalıkları Anabilim Dalı.; 0000-0002-9217-3034; 0000-0001-9138-4422; AAC-2909-2020; AAP-7998-2020; AAG-9134-2021; K-6112-2016; 31967678500; 24335834100; 15753357900; 31967682500; 55786609400; 7006082971; 38762296900; 36514844800; 6701855392; 8849978100Fifty newborn Saanen kids were used to study the effects of inulin supplementation on faecal score, faecal pH, selected faecal bacterial population, BW, body temperature, haematological traits, selected health parameters and the incidence of diarrhoea. Kids were sorted by parity of their dams and multiple birth (twin or triplet) and assigned to one of the two groups (control: CG, and experimental: EG) at birth. Each group consisted of 25 kids. The groups were similar with regard to sex and birth weight. All kids were fed colostrum for the first 3 days after birth, and then the kids in EG were adapted to inulin supplementation by an increased dosage from day 4 to 7. Each kid in EG was supplemented with 0.2 g, 0.3 g, 0.4 g, 0.5 g and 0.6 g inulin on day 4, 5, 6, 7 and from day 8 to 28, respectively, whereas the kids in CG did not receive inulin. Faecal score and faecal bacterial population were not affected by inulin supplementation (P > 0.05). There were differences in faecal pH on day 14 (P = 0.01) and 28 (P < 0.05), whereas no difference in faecal pH on day 21 (P > 0.05) was detected between groups. No differences (P > 0.05) in BW and haematological traits were found between groups. Body temperature did not differ on day 14 and 21 (P > 0.05), whereas there was a difference in body temperature on day 28 (P = 0.01) between groups. The numbers of kids with pneumonia and kids treated for pneumonia and diarrhoea were similar for CG and EG. Kid losses during the study were the same for CG and EG. The incidence of diarrhoea was not affected by inulin supplementation (P > 0.05). Inulin supplemented to kids did not adversely affect faecal score. The effect of inulin on faecal pH was not consistent. The results of our study suggested that daily dose (0.6 g) of inulin might not be enough to observe effects of it. Our data will be useful to determine the dose and timing of inulin supplementation in future studies investigating the effects of inulin on the parameters associated with performance and health status in kids and other young ruminants.Item Effects of juniper essential oil on growth performance, some rumen protozoa, rumen fermentation and antioxidant blood enzyme parameters of growing Saanen kids(Wiley, 2016-05-30) Yeşilbağ, Derya; Biricik, Hakan; Çetin, İsmail; Kara, Çağdaş; Meral, Yavuz; Cengiz, Şerife Şule; Orman, Abdülkadir; Udum, Duygu; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Biyokimya Anabilim Dalı.; 0000-0001-9138-4422; 0000-0001-7052-1694; 0000-0003-0708-3833; AAH-4032-2021; AAK-5370-2020; AAG-9134-2021; AAH-5167-2021; B-1526-2018; 9246817500; 6602982111; 56707038100; 31967678500; 55786609400; 56329475100; 24335834100; 31967936400This study aimed to evaluate the effects of juniper essential oil on the growth performance, rumen fermentation parameters, rumen protozoa population, blood antioxidant enzyme parameters and faecal content in growing Saanen kids. Thirty-six male Saanen kids (36 +/- 14days of age) were used in the study. Each group consisted of 9 kids. The control group (G1) was fed with a diet that consisted of the above concentrated feed and oat hay, whereas the experimental groups consumed the same diet but with the concentrated feed uniformly sprayed with juniper essential oil 0.4 ml/kg (G2), 0.8 ml/kg (G3) or 2 ml/kg (G4). There were no differences (p>0.05) in live weight, live weight gain or feed consumption between the control and experimental groups. There was a significant improvement (p<0.05) in feed efficiency in the G3 group. There were no differences in the rumen pH, rumen volatile fatty acid (VFA) profile or faecal pH of the control and experimental groups. The rumen NH3N values were similar at the middle and end of the experiment, but at the start of the experiment, the rumen NH3N values differed between the control and experimental groups (p<0.05). The faecal score value was significantly (p<0.05) decreased in the experimental groups. The addition of juniper essential oil supplementation to the rations caused significant effects on the kids' antioxidant blood parameters. Although the superoxide dismutase (SOD) activity, total antioxidant capacity (TAC) and catalase values were significantly (p<0.05) increased in the experimental groups (G2, G3 and G4), especially group G4, the blood glutathione peroxidase (GPX) value significantly decreased in the experimental groups. The results of this study suggest that supplementation of juniper oil is more effective on antioxidant parameters than on performance parameters and may be used as a natural antioxidant product.Item Effects of probiotic (Bacillus subtilis DSM 17299) supplementation on the caecal microflora and performance in broiler chickens(Ecole Nationale Veterinaire Toulouse, 2011-11) Deniz, Gülay; Orman, Abdülkadir; Çetinkaya, Figen; Gençoğlu, Hıdır; Meral, Yavuz; Türkmen, İbrahim İsmet; Uludağ Üniversitesi/Veterinerlik Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; Uludağ Üniversitesi/Veterinerlik Fakültesi/Zooteknik Anabilim Dalı.; Uludağ Üniversitesi/Veterinerlik Fakültesi/Gıda Hijyeni ve Teknolojisi Anabilim Dalı.; 0000-0001-9138-4422; AAI-1993-2021; AAG-9134-2021; 56186472300; 24335834100; 8657771200; 15753357900; 55786609400; 6701855392The aim of the study was to determine the effects of dietary probiotic supplementation with B. subtilis spores (strain DSM 17299) on the growth performance and carcass traits in broiler chickens and to analyse the influence on the caecal microflora. A total of 364 one day-old male broiler chicks were randomly divided into 2 equal groups (not supplemented controls and birds receiving dietary addition of B. subtilis spores (8x10(5) cfu/kg of food) for 6 weeks). Body weights, body weight gains, food intake and food efficiency were weekly evaluated and the carcass parameters (hot carcass weight and yield) and the caecal microflora composition were determined at the end of the experiment. The probiotic supplementation has significantly increased the final weight gain (P < 0.05) and the hot carcass weight (P < 0.01), reduced the food intake calculated for 6 weeks (P < 0.001) and improved the food conversion ratios since the 4th week with supplementation (p < 0.001). In parallel, in the treated birds, the caecal population of bacilli was markedly enhanced (P < 0.01) whereas those of enterococci (P < 0.001) and coliforms (P < 0.05) were significantly lowered. The Enterobacteriaceae counts were also weakly depressed but not significantly and the numeration of lactobacilli has also tended to slightly increase. These results show that the dietary inclusion of B. subtilis spores improve the weight growth and the food efficiency in broilers probably through the selection of beneficial bacteria to the detriment of pathogen germs in the caecal microflora.Item Effects of supplemental mannanoligosaccharides on growth performance, faecal characteristics and health in dairy calves(Asian-Australasian Association of Animal Production Societies, 2015-11) Kara, Çağdaş; Cihan, Hüseyin; Temizel, Mutlu; Çatık, Serkan; Meral, Yavuz; Orman, Abdülkadir; Yıbar, Artun; Gençoğlu, Hıdır; Uludağ Üniversitesi/Veteriner Fakültesi.; 0000-0003-2515-1211; 0000-0003-1544-6438; 0000-0002-4828-4116; 0000-0001-9138-4422; 0000-0001-9510-5734; 0000-0003-1067-2874; DXJ-9465-2022; ABH-3742-2020; CDA-0725-2022; CHM-0716-2022; DGQ-7149-2022; AAG-9134-2021; ABE-9200-2022; HJZ-4775-2023; 31967678500; 6602381681; 7801559387; 56515323800; 55786609400; 24335834100; 38762296900; 15753357900Twenty Holstein calves were used to investigate the effects of mannanoligosaccharides (MOS) supplementation in the whole milk on growth performance, faecal score, faecal pH, selected faecal bacterial populations and health during the preweaning period. Healthy calves selected by clinical examination were allocated to one of the two groups (control [ CG] and experimental [ EG]) at 5 days old. Each group consisted of 5 male and 5 female calves. Each calf in EG was supplemented with 7 g/d of a MOS product (Celmanax) from 5 days to 56 days of age. MOS supplement was mixed with the whole milk once in the morning and administered to the calves in EG via nipple bottle, whereas the calves in CG were fed the whole milk without MOS. Calves were weaned at 56 days of age. The final body weight, average daily weight gain (ADG) and average daily feed intake (ADFI) were statistically similar (p>0.05) but were higher by 3.70%, 6.66%, and 10.97%, respectively, in MOS than in control calves. Feed efficiency (ADG/ADFI) was also similar in two calves group. While faecal scores did not differ on day 5, 7, 14, 21, 28, 42, 49, and 56 between groups, EG had a higher faecal score (p=0.05) than CG on day 35. Faecal concentration of Lactobacillus was lower (p<0.05) in EG compared with CG. No differences (p>0.05) in faecal concentrations of Bifidobacterium, Clostridium perfringens, and Escherichia coli were found between groups. Although there were no significant differences (p>0.05) in the incidence of diarrhoea, treatment days for diarrhoea and the costs associated with diarrhoea treatments between groups, collectively, the observed reductions in treatment days and the cost of diarrhoea treatments accompanying increases in final body weight, ADG and ADFI for EG may indicate potential benefit of MOS in treatment of diarrhoea.Item Effects of volatile oil additives on growth, carcass performances, and calcium and phosphorus concentrations in serum and bone of broilers(Ecole Nationale Veterinaire, 2016) Cengiz, Şerife Şule; Yeşilbağ, Derya; Eren, Mustafa; Çetin, İsmail; Meral, Yavuz; Biricik, Hakan; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; 0000-0003-0708-3833; AAH-4032-2021; B-1526-2018; AAK-5370-2020; AAC-5057-2020; EQT-2756-2022; DGQ-7149-2022; 56329475100; 9246817500; 9239300300; 56707038100; 55786609400; 6602982111Essential oils (herbal volatile oils) as alternatives to antibiotics are considered the most powerful natural feed additives. The aim of this study was to determine the effects of volatile oils and their mixtures (VOM) dietary supplementation on the performance, serum and tibia characteristics of broilers. A total of 800 male Ross 308 broiler chicks were equally divided into 8 groups of 100 chicks (10 replicates of 10 chicks each). The study included a control (NC) and diets supplemented with oils according to the following 7 treatments: 200 mg alpha-tocopherol acetate/kg (PC); 100 mg oregano oil /kg (OVO); 100 mg rosemary oil /kg (RVO); 100 mg fennel oil (FVO); oregano oil + rosemary oil + fennel oil - equally mixed - (100, 200, and 400 mg/kg, VOM-1, VOM-2 and VOM-3, respectively). The experiment was conducted for 42 d.At the end of the experiment, no significant differences were observed in feed intake and carcass yield. Dietary supplementation with mixed volatile oils (VOM-2 and VOM-3) and OVO improved the final body weight. Dietary treatments significantly influenced the feed conversion ratio (FCR) and bone ash (P< 0.001). Furthermore, the hot carcass weights of the OVO and RVO group and the volatile oil mixture group (VOM-2 and VOM-3) were significantly higher than for the NC group. FVO and VOM supplementation at both inclusion levels (VOM-2 and VOM-3) in the broiler diet significantly increased the bone Ca level compared with the other groups (p< 0.001). Moreover, the bone phosphorus percentage of the same groups (FVO, VOM-2 and VOM-3) were also significantly enhanced (p< 0.001) compared to the control groups (NC and PC). In conclusion, the results of this study showed encouraging improvement in performance and in tibia Ca levels in broilers when their diets were supplemented with VOM-3.Item Evaluation of nutrient equivalency of microbial phytase in hens in late lay given maize-soybean or distiller's dried grains with solubles (DDGS) diets(Taylor and Francis, 2013-08) Deniz, Gülay; Gezen, Şerife Şule; Kara, Çağdaş; Gençoğlu, Hıdır; Meral, Yavuz; Baser, E.; Uludağ Üniversitesi/Veterinerlik Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.; 0000-0003-0708-3833; B-1526-2018; 56186472300; 9239300200; 31967678500; 15753357900; 55786609400; 557871374001. An experiment was conducted with 360 Lohmann LSL-Classic White Leghorn layers (64 weeks old) to evaluate the effects of supplementation of microbial phytase on production, egg quality, bone, selected manure parameters and feed costs. 2. Experimental diets were formulated as follows: (1) maize-soybean (CS), (2) CS+300 units of phytase (FTU)/kg diet which was formulated to recoup only calcium and available phosphorus equivalency for phytase (CS+PHYCa+P), (3) CS+300 FTU/kg diet which was formulated to recoup total nutrient equivalency for phytase (CS+PHYtotal), (4) CS+100 g/kg distiller's dried grains with solubles (DDGS), (5) DDGS+300 FTU/kg diet which was formulated to recoup only calcium and available phosphorus equivalency for phytase (DDGS+PHYCa+P), or (6) DDGS+300 FTU/kg diet which was formulated to recoup total nutrient equivalency for phytase (DDGS+PHYtotal). 3. Each dietary treatment was assigned to 4 replicate groups with 3 cages and 5 hens per cage. The hens were provided with feed and water ad libitum. The experiment lasted for 8 weeks. 4. CS+PHYCa+P, CS+PHYtotal, DDGS+PHYCa+P and DDGS+PHYtotal diets supplemented with phytase provided similar percentage egg production, egg weight, egg mass, exterior egg quality, initial and final body weight compared with phytase-free diets. 5. However, supplementation of phytase to the experimental diets and calculation of the total nutrient equivalency for enzyme caused increased feed intake and decreased feed conversion ratio and Haugh unit. 6. No differences in manure dry matter, crude ash, total nitrogen, tibia crude ash, calcium and phosphorus contents were found among the experimental diets. On the other hand, manure total phosphorus content was significantly decreased in the DDGS diet and diets supplemented with phytase in comparison to the CS diet. 7. It was concluded that the addition of microbial phytase to the CS-based diets or diets with DDGS of hens in late lay and using Ca and available P equivalency of enzyme in feed; formulation may provide an economic benefit and decrease the amount of phytate P excretion in the manure without compromising production and egg quality parameters.Item Geçiş dönemindeki süt sığırlarında karaciğer yağlanması ve kolinin önemi(Uludağ Üniversitesi, 2013-10-22) Meral, Yavuz; Kara, Çağdaş; Uludağ Üniversitesi/Veteriner Fakültesi.Artan dünya nüfusu ve gelişen süt sığırcılığı endüstrisine paralel olarak, süt sığırlarının beslenmesinde yem katkı maddelerinin kullanım alanı ve miktarı artmıştır. Metabolik ve reprodüktif bozuklukların en çok gözlendiği dönem, doğum öncesi ve sonrasındaki 3 haftayı kapsayan geçiş dönemidir ve bu süreç, bir süt sığırının yaşam döngüsü içerisindeki en önemli dönem olarak kabul edilmektedir. Günden güne büyüyen süt sığırcılığı endüstrisinde hastalıkları tedavi etmekten çok hastalığın ortaya çıkışını önlemek önem kazanmıştır. Büyük verim kayıplarına ve tedavi maliyetlerine yol açan özellikle geçiş döneminde gözlenen yağlı karaciğer sendromunun önlenmesinde, geçiş dönemindeki yüksek verimli süt sığırı rasyonlarına rumenden korunmuş kolin ilavesi umut verici bir besleme stratejisi olarak değerlendirilmektedirItem Influence of glycerol supplementation to dairy and feedlot cattle diets on performance and health: A review(Uludağ Üniversitesi, 2015-08-10) Meral, Yavuz; Kara, Çağdaş; Biricik, Hakan; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı.Increasing population and demand in nearly every sector led humankind to use energy efficiently in every production area. One of the recent “megatrends” worldwide is to supply energy from renewable sources. Rapid emerge of biodiesel industry in the world accompanied with increasing production of industry by-products. As a result of this, some of the industry by-products, such as glycerol, are started to become more available and feasible which is thought to have a promising potential for being a remarkable alternative to high-energy containing feed raw materials. Because of increasing prices of cereals all over the world and search for alternative feed materials by producers has encouraged animal nutrition scientist to determine the effects of this different commercially valued products on performance, metabolism and final product quality for cattle nutrition. Thus the aim of this review is to evaluate the potential of glycerol for feedlot and dairy cattle nutrition.Item Influence of Juniper (Juniperus communis) oil on growth performance and meat quality as a natural antioxidant in quail diets(Taylor & Francis, 2014-06-24) Yeşilbağ, Derya; Cengiz, Şerife Şule; Çetin, İsmail; Meral, Yavuz; Biricik, Hakan; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme Anabilim Dalı.; 0000-0003-0708-3833; 0000-0002-9217-3034; AAK-5370-2020; B-1526-2018; AAH-4032-2021; K-6112-2016; 9246817500; 56329475100; 56707038100; 55786609400; 66029821111. This study aimed to evaluate the effects of juniper oil on growth performance and meat quality in quails to determine its use as a safe and natural method to reduce overdependence on the use of antibiotic. 2. A total of 1000 1-d-old Pharaoh (Coturnix coturnix Pharaoh) quails, including both males and females, were divided into 4 groups containing 250 quails and treated as follows: (1) a control group with 0mg volatile oil/kg diet; (2) 100mg/kg juniper oil; (3) 150mg/kg juniper oil and (4) 200mg/kg juniper oil. The diets were prepared fresh for each treatment. The experiment was carried out for 42 d. 3. The results of the study showed that supplementation with juniper oil (100 and 150mg/kg) caused a significant increase in live weight, live weight gain and carcass yields during the growing and finishing periods. Feed intake and feed conversion ratio were not significantly influenced by treatments. 4. The quails given rations containing juniper oil had reduced thiobarbituric acid levels in raw thigh meat samples at different storage times. Juniper oil was found to have significant antioxidant activity and prevented lipid oxidation in stored meat. 5. In conclusion, natural antioxidants such as a juniper oil can be used instead of synthetic antioxidants to retard lipid oxidation in animal diets to improve meat product quality and animal performance.Publication Juniper oil improves oxidative stability and eggshell and albumin quality of quail eggs(Taylor, 2015-01-02) Cengiz, Şerife Şule; Yeşilbağ, Deryağ; Meral, Yavuz; Çetin, İrene; Biricik, Hakan; Cengiz, Şerife Şule; YEŞİLBAĞ, DERYA; Meral, Yavuz; Çetin, İrene; BİRİCİK, HAKAN; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Besleme Anabilim Dalı; 0000-0003-0708-3833; 0000-0002-9217-3034; 0000-0001-7051-1349; B-1526-2018; K-6112-2016; AAK-5370-2020; AAH-4032-2021; DGQ-7149-20221. The aim of this study was to determine the effects of juniper oil (JO) dietary supplementation on the laying performance, egg traits and egg malondialdehyde (MDA) concentrations of quail.2. A total of 400 female Pharaoh quails were equally divided into 4 groups containing 100 quails (5 replicates of 20 quails each). The study included a control treatment with no diet additives, and the treatments were as follows: (group 1) 100mg JO/kg; (group 2) 200mg JO/kg; (group 3) 300mg JO/kg. The experiment was carried out for 60d.3. At the end of the experiment, there were no significant differences in body weight, egg weight, egg mass, egg shape index, yolk colour, egg production, feed consumption or feed efficiency.4. The Haugh unit was increased in groups 2 and 3 compared to the control group. Dietary fortification with JO improved eggshell thickness and breaking strength compared to the control group. Furthermore, the damaged egg ratio was significantly decreased in group 3 compared to the control. The increasing concentration of JO (200 and 300mg/kg) caused a significant decrease in egg yolk MDA concentration after 15 and 30d of storage at 20 degrees C.5. It was concluded that inclusion of JO in layer diets can improve egg quality characteristics in terms of Haugh unit, eggshell thickness and breaking strength. Moreover, supplementation of JO in the diets of quail may enhance the antioxidant status of eggs, and the most effective doses of JO were 200 and 300mg/kg.