Person: BİRİCİK, HAKAN
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BİRİCİK
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HAKAN
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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; Veteriner Fakültesi; Hayvan Besleme Ana Bilim 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.Publication Effects of supplementing a direct-fed microbial containing Enterococcus faecium 669 on performance, health, and metabolic responses of Holstein calves(Elsevier Science Inc, 2023-12-13) Biricik, Hakan; Brav, Fahir C.; Çetin, Ece; Aydin, Levent; Fantinati, Paolo; Cappellozza, Bruno I.; BİRİCİK, HAKAN; Brav, Fahir C.; AYDIN, LEVENT; Veteriner Fakültesi; 0000-0001-7051-1349; AAH-4032-2021; CHR-8938-2022; HLG-4450-2023This study aimed to evaluate the effects of Enterococcus faecium 669 supplementation on performance, health, parasitological, microbiological, and hematological responses of preweaning dairy calves. Forty-two newborn Holstein female calves (initial body weight [BW] 44 +/- 4.5 kg) were used in the present study. At birth, calves were ranked by initial BW and assigned to 1 of 2 treatment groups: (1) whole milk (CON; n = 21) and (2) whole milk with the addition of direct-fed microbial Ent. faecium 669 (DFM; n = 21). During the entire experimental period (63 d), DFM was daily-fed at a rate of 2.5 x 109 cfu/head. All calves were offered a mixture of a starter feed and wheat straw for ad libitum consumption. Supplement intake was evaluated daily, whereas calves were weighed on a weekly basis from d 0 to weaning (d 63). Diarrhea was assessed once a day, and fecal and blood samples were collected for microbiological, parasitological, and hematological responses. All data were analyzed with SAS using calf as the experimental unit. A treatment x week interaction was observed for BW, as DFM-supplemented calves were heavier than CON cohorts on d 56 (+ 4.7 kg) and at weaning on d 63 (+ 4.8 kg). A similar interaction was observed for average daily gain (ADG) and dry matter intake (DMI), with greater ADG for DFMsupplemented calves from d 35 to 42, greater ADG and DMI from d 49 to 56, and greater DMI from d 56 to weaning. Moreover, diarrhea occurrence tended to be lower, whereas rectal temperature was 0.2 degrees C lower for DFM-supplemented calves. Treatment x day interactions were observed for the occurrence and counts of Eimeria spp., as DFM-supplemented calves tended to have a reduced number of positive observations on d 42 of the study versus CON, and a significant reduction in positive animals from d 21 to 42 was observed in the DFM group but not in CON calves. For Cryptosporidium spp., no treatment effects were observed on overall occurrence (%), but DFM-supplemented calves had a greater count of oocyst per gram versus CON. No treatment x day interaction or main treatment effects were observed for any of the blood variables analyzed herein, exception being monocytes concentration. In summary, preweaning Ent. faecium 669 supplementation improved performance, diarrhea occurrence, and reduced the number of calves positively-detected for EimeriaPublication Effects of rosemary essential oil as a feed additive on performance, rumen fermentation, and blood parameters in preweaning holstein calves(Hellenic Veterinary Medical Soc, 2023-07-01) Bıyık, F.; Biricik, H.; Ürkmez, E.; Kara, C.; Çetin, I.; Udum, D.; Bıyık, F.; BİRİCİK, HAKAN; Ürkmez, E.; KARA, ÇAĞDAŞ; UDUM, DUYGU; Veteriner Fakültesi; Biyokimya Ana Bilim Dalı; 0000-0001-7051-1349; AAH-4032-2021; AAH-5167-2021; EPB-3936-2022; HHL-7869-2022; HKL-2630-2023The objective of this study was to investigate the effects of rosemary essential oil (REO) supplemen- tation on growth performance, blood metabolites and rumen fermentation in calves throughout the suckling period. Fourty Holstein calves were randomly divided to four dietary groups. Each group consisted of 10 calves; control with no REO supplementation (CON), supplementation of 500 mg/d REO (REO1), supplementation of 1000 mg/d REO (REO2) and supplementation of 2000 mg/d REO (REO3). REO supplementation quadratically increased (P<0.05) the calf starter (CS) intake, average daily gain (ADG) and feed efficiency. Calves fed REO1 and REO2 had the highest CS intake and ADG. Ruminal ammonia-N concentration was lower (P=0.02) for calves fed REO3 than calves fed REO1, but total volatile fatty acids concentration was higher (P<0.01) for calves fed REO1 compared with calves fed CON and REO3. The concentrations of ghrelin, NEFA and BHBA increased linearly (P<0.05) with increasing levels of REO. Calves fed REO2 and REO3 had the highest concentration of ghrelin. Cholesterol concentration decreased linearly (P<0.01) with increasing REO levels on d 56. Calves fed REO2 and REO3 had the lowest cholesterol concentration. Also, serum IgG concentration was higher (P<0.01) in calves fed REO2 and REO3 compared with calves fed CON on d 28. It was concluded that the addition of different amounts of rosemary essential oil can positively change some rumen and blood metabolites of calves, as well as the supplementation of REO may have a beneficial effect on growth performance by increasing ghrelin.Publication Effects of exogenous amylase in transition dairy cows fed low-starch diets: 2. total tract digestibility and blood urea nitrogen(Kafkas Univ, Veteriner Fakultesi Dergisi, 2019-09-01) Shaver, Randy Duncan; Gençoğlu, Hıdır; GENÇOĞLU, HIDIR; Kara, Cağdaş; KARA, ÇAĞDAŞ; Biricik, Hakan; BİRİCİK, HAKAN; Efil, Mukaddes Merve; Türkmen, İbrahim İsmet; TÜRKMEN, İBRAHİM İSMET; DENİZ, GÜLAY; Kovanlıkaya, Arda; Kıvanç, Recep Tolga; Yıldırım, Ramazan; Veteriner Fakültesi; 0000-0001-7051-1349; 0000-0001-5077-5689; AAH-4311-2021; AAH-4032-2021; HJZ-4775-2023The objective of this trial was to determine the effect of exogenous amylase during the transition period on total tract digestibility, rumen pH and blood urea nitrogen in lactating dairy cows. The effect of exogenous dietary amylase supplementation on lactation diets with low starch concentration (19.5% of dry matter) and dry period diets with moderate starch concentration was evaluated (15.5% of dry matter). A total of 30 multiparus Holstein cows were randomly assigned to two groups with amylase (n=15) or control (n=15). Three cows from each group were randomly selected and ruminally cannulated for digestibility trials. The research was conducted starting at 21 d prepartum until 84 d postpartum. Digestibility of dry matter, organic matter, neutral detergent fiber, starch, and crude protein remained unaffected by treatment in postpartum. Average pre- and postpartum rumen pH concentrations were 6.25 and 6.15, respectively, and did not differ between treatments. Blood urea nitrogen (BUN) concentrations were lower in cows fed amylase supplemented diet compared to those fed diet without amylase in both pre- and postpartum periods (P<0.001). In conclusion, the dietary supplementation of amylase did may not affect the digestibility of nutrients, however, it may decrease the BUN concentration in pre- and postpartum period for cows fed amylase. Therefore, it may offer potential for improving nitrogen efficiency in dairy cows.Publication Grape seed extract supplementation in heat-stressed preweaning dairy calves: I. Effects on antioxidant status, inflammatory response, hematological and physiological parameters(Elsevier, 2022-09-13) Ürkmez, Emin; Biricik, Hakan; Ürkmez, Emin; BİRİCİK, HAKAN; Veteriner Fakültesi; Hayvan Besleme ve Beslenme Hastalıkları Ana Bilim Dalı; 0000-0001-7051-1349; AAH-4032-2021; GXM-2091-2022This study aimed to investigate the effects of grape seed extract (GSE) supplementation on antioxidant activity, inflammatory markers, hematological and physiological responses during the suckling period in heat-stressed calves. Sixty Holstein female calves (3 d of age, 40.6 +/- 2.17 kg of BW) were randomly divided into four dietary groups. Each group consisted of 15 calves; the milk was supplemented with 0 (CON) 25 (GSE1), 50 (GSE2), and 100 (GSE3) mg/kg BW/day of GSE. On d 3, 33, and 63 blood samples were collected, rectal temperatures (RT) and respiratory rates (RR) were measured three days a week. Calves were exposed to chronic heat stress during the study period and were weaned on d 63. Plasma malondialdehyde (MDA) and tumor necrosis factor-alpha (TNF-alpha) concentrations decreased (P < 0.01) in all GSE supplemented groups compared to the CON group. Also, interferon-gamma (IFN-gamma) concentration decreased (P = 0.03) only in calves fed GSE1. Plasma total antioxidant capacity (TAC) concentration increased (P = 0.02) in calves fed GSE3 on d 33 compared to the CON group, while the concentration of superoxide dismutase (SOD) was higher (P < 0.001) in the GSE2 and GSE3 groups compared to CON and GSE1. The hematocrit percentage, hemoglobin value, RBC, and eosinophil counts were higher (P < 0.01) in all GSE supplemented groups compared to CON. Calves fed GSE1, GSE2 and GSE3 had lower (P < 0.001) neutrophil count compared to CON on d 63. All GSE-supplemented groups had a decreased (P < 0.001) RR compared to CON, while calves fed GSE2 had a tendency to decrease (P = 0.10) in RT. It was concluded that supplementation with 50 and 100 mg/kg BW/ d GSE could improve antioxidant, anti-inflammatory activities, and hematological parameters of calves against oxidative stress, and also reduce the effect of heat stress by reducing the respiratory rate.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; Veteriner Fakültesi; Gıda Hijyeni ve Teknolojisi Ana Bilim 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).