Person: KOYUNCU, MEHMET
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KOYUNCU
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MEHMET
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Publication Effect of sex on fattening performance and carcass characteristics in kivircik lambs(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2021-01-01) Koyuncu, Mehmet; KOYUNCU, MEHMET; Altincekic, Seniz Ozis; ÖZİŞ ALTINÇEKİÇ, ŞENİZ; Duru, Serdar; DURU, SERDAR; Canbolat, Onder; CANBOLAT, ÖNDER; Bursa Uludağ Üniversitesi/Ziraat Fakültesi.; 0000-0001-9044-8092; 0000-0001-5243-4458; I-9517-2017; AAG-8210-2021; JPL-0865-2023The aim of this study was to evaluate the effect of sex on fattening performance and carcass characteristics of Kivircik lambs. Fifty head weaned Kivircik lambs, half males and half females, were used in fattening period. After weaning, the growth and feed consumption of the male and the female lambs fattened for 56 days were recorded. Average daily weight gain differed significantly (P<0.01) between the males and the females (294.9 and 214.2 g, respectively). A total of 10 lambs (5 males and 5 females) were slaughtered and the left side of the carcasses was cut into five joints. Dressing percentage (hot/cold) based on full weight and empty body weight were lower (P<0.05) for the males than the female lambs. Sex had a significant effect on kidney-knob and channel fat weight, M. longissimus dorsi section area (MLDA) and liquid expelled (P<0.01). Sex primarily affected the quantity of all types of fat deposits. The male lambs had higher muscle, muscle/bone and muscle/total fat ratios than females.Publication Managerial practices related to the survival of calves in dairy cattle breeding farms in Hendek district-I(Bursa Uludağ Üniversitesi, 2023-06-14) Karaca, Merve; Koyuncu, Mehmet; KOYUNCU, MEHMET; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü; 0000-0003-0379-7492This research was conducted out to determine the knowledge, ideas and behaviors related to the managerial practices of calf’s survival in dairy cattle farms in Hendek district of Sakarya province, and to analyze the status of the existing farms. In the research, were identified farms which are registered to Turkvet and e-breeding system database having ten or more dairy cattle in Hendek district. Random sampling method was used to determine the sample size. The identified farms are divided into five class which are 10-20 heads, 21-30 heads, 31-40 heads, 41-50 heads and over 50 heads of cattle. In this context, after obtaining general data about the farms, questions related to the main topics about the care and management of calves such as colostrum use, feeding practices, health protection and housing were evaluated. In feeding management, farms with a capacity of 40 heads and less prefer grazing and supplementary feeding, while farms with a capacity of 40 heads and above prefer to feed in barns (P<0.05). While 74% of all farms have an annual average milk yield of less than 5000 liters, 26% yield more than 5000 liters (P<0.05). 15.6% of the farms produce less than five calves, 33.8% 6-10 calves, 28% 11-20 calves, and 22.5% have 20 or more calves (P<0.05). In 70.5% of the farms, calf losses occur within the first 30 days, followed by a decrease in deaths in the following weeks. While the answer to the question of separating the calves from their mothers after birth comes to the forefront in small-scale farms, the approach to separate them immediately or within the first 12 hours becomes prominent as the farm capacity increases (P<0.05). It was determined that approximately 77% of the farms did not have such an approach to determine the quality of the colostrum given to the calves, and it was determined that quality assessments were made as the farm capacity increased (P<0.05).Publication Managerial practices related to the survival of calves in dairy cattle breeding farms in Hendek district-II(Bursa Uludağ Üniversitesi, 2023-06-14) Karaca, Merve; Koyuncu, Mehmet; KOYUNCU, MEHMET; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü; 0000-0003-0379-7492This research was conducted out to determine the knowledge, ideas and behaviors related to the managerial practices of calf survival in dairy cattle farms in Hendek district of Sakarya province, and to analyze the status of the existing farms. In the research, were identified farms which are registered to Turkvet and e-breeding system database having 10 or more dairy cattle in Hendek district. Random sampling method was used to determine the sample size. The identified farms are divided into 5 groups which are 10-20 heads, 21-30 heads, 31-40 heads, 41-50 heads and over 50 heads of cattle. In this context, after obtaining general data about the farms, questions related to the main topics about the care and management of calves such as colostrum use, feeding practices, health protection and housing were evaluated. Milk-fed to calves, marketed milk, marketed milk + waste milk, and marketed milk + milk replacer are given in three ways. Within the scope of the size of the farms, the difference between the source of the milk consumed during the milk feeding period was found to be significant (P<0.05). Until the first 30 days of age, in farms with a capacity of over 30 heads, approximately 8 liters of milk are given (P<0.05), while in small farms, sucking milk from the mother or giving less milk is preferred. Farms are sensitive about reaching the concentrate and rough feed of the calves, and they generally apply it from the first week. The concentrated feed used in calf feeding is approximately 70% in pellet form. The weaning age of the calves is 90 days in farms with 40 heads and below and after 90 and 120 days in farms over 40 heads (P<0.05). Age criterion taken into consideration at weaning was found to be more important than body weight and feed consumption (P<0.05). While the calves are housed mainly in groups (60%) in small-scale farms, individual pens (70%) stand out among the preferences due to the increase in capacity. Small-scale farms prefer metal, wood, and brick, and large-scale farms mainly plastic and metal materials for calf shelters (P<0.05). Eight weeks or more is preferred for keeping calves in individual pens (P<0.05).Publication Determination of udder characteristics in kivircik sheep under the breeder conditions(Kahramanmaraş Sütçü İmam Üniversitesi, 2021-01-01) Akgün, Hilal; Koyuncu, Mehmet; KOYUNCU, MEHMET; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü; FFK-4918-2022This study was conducted to determine udder characteristics, linear udder scores and the relationship of these characteristics with each other of Kivircik sheep in breeder conditions. A total of 38 heads of Kivircik ewes were used in the study. Udder morphology characteristics of the traits including udder circumference, udder height, udder length, teat distance, teat width and teat length values were measured as 37.2 cm, 17.1 cm, 22.8 cm, 16.5 cm, 18.8 mm and 27.3 mm respectively. Linear scores including teat placement, udder depth, degree of separation and degree of suspension of the udder were scored as 4.6, 8.0, 3.4 and 6.9, respectively. The effect of the control periods and live weight of the sheep were significant on the udder characteristics (P<0.05, P<0.01), and the effect of the type of birth was insignificant. The effects of the live weight and type of birth on the linear scores udder characteristics were insignificant.Publication The effects of short-mid-long term intravaginal sponge application on reproductive performance of Karacabey Merino ewes in the anestrous season(Agricultural Research Communication Centre, 2019-01-01) Altınçekiç, Şeniz Öziş; Koyuncu, M.; ÖZİŞ ALTINÇEKİÇ, ŞENİZ; KOYUNCU, MEHMET; Uludağ Üniversitesi/Ziraat Fakültesi/Hayvan Bilimleri Bölümü; 0000-0001-9044-8092; 0000-0003-0379-7492; AAG-8210-2021; AAG-8536-2021; JPL-0865-2023The aim of the present paper was to investigate the efficiency of different progestagen treatment methods in combination with Pregnant Mare Serum Gonadotrophin (PMSG) in Merino ewes outside the breeding season. A total of 78 ewes (2 to 4 years old) with a mean bodyweight of 58.4 kg and an average body condition score (BCS) of 3.5 were used in the trial. The ewes were randomly divided into 3 equal groups [n=26]. Intravaginal progestagen sponges containing Fluorogestone Acetate (FGA; 30 mg) were inserted intravaginally for different periods (7_days: short-term; 10_days: mid-term, 14_days: long-term). In all cases, 500 IU PMSG was administered intramuscularly at sponge withdrawal. The oestrus response, lambing rate, multiple birth rate, fecundity and litter size were [65.4, 61.5, 18.8 %, 0.77 and 1.25] in the short-term group; 80.8, 88.5, 34.8 %, 1.31 and 1.48 in the mid-term group; and 96.2, 92.3, 62.5 %, 1.50 and 1.63 in the long-term group, respectively. Oestrus manifestation and multiple birth rate were greater in long-term than in mid-and short-term groups, whereas for lambing rate, fecundity and litter size, better results were obtained in long- and mid-term than in short-term protocol. In conclusion, in Merino ewes, oestrus synchronisation outside the breeding season with long and mid-term progestagen treatment was found to be more effective than short-term treatment.