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    Determination of some environmental factors on milk yield traits and milk components in Simmental cows
    (Tubitak Scientific & Technological Research Council Turkey, 2024) Sahin, Onur; Soysal, Mehmet Ihsan; Gurcan, Eser Kemal
    The aim of the study was to determine the effects of various environmental factors on milk yield and milk components in Simmental cows. In the present study, 33,813 milk yield records from 1631 cows and milk samples from 233 cows were used for milk component analysis. Lactation milk yield (LMY) and 305 -day yield (305-DMY) were the milk yield characteristics studied. Environmental factors considered for milk yield characteristics included province, calving year, calving month, parity, age, and lactation length. Milk components analyzed were fat percentage (FP), protein percentage (PP), lactose percentage (LP), somatic cell count (Log(10)SCC), and dry matter (DM). Environmental factors considered for milk components were province, birth year, control month, calving month, and parity. The results indicated that all environmental factors significantly influenced milk yield characteristics (p < 0.01). Specifically, province and birth year significantly affected FP and Log(10)SCC (p < 0.01), whereas calving month, control month, and parity did not significantly affect FP. Province, birth year, and control month significantly influenced PP and DM (p < 0.01), while calving month and parity did not significantly affect PP. Province was the only significant factor for LP (p < 0.01). Considering all data, the averages of traits were as follows: LMY (5628.1 +/- 12.80 kg), 305-DMY (5309.2 +/- 11.80 kg), total dry matter yield (TDMY) (22.58 +/- 0.51 kg), DM (12.43 +/- 0.08%), Log10SCC (2.29 +/- 0.04, equivalent to 226239 cells/mL), FP (3.78 +/- 0.06%), PP (3.57 +/- 0.02%), and LP (4.72 +/- 0.01%).
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    Relationships Between Partial Milk Yield and Actual Milk Yield According to Parity in Buffaloes
    (Centenary University, 2024) Soysal, Mehmet Ihsan; Gürcan, Eser Kemal; Ünal, Emel Özkan
    In this study, the relationships between 100-day of partial milk yield and 270-day of additive and total milk yield of buffaloes according to different parity were investigated. A total of 697 lactation records belonging to 135 heads of buffalo and seven lactations were used in the material. The relationships between the animals' 100-day partial milk yield for 270-day and total milk yield were analyzed for seven lactations. In the study, 100-day milk yield was taken as an independent variable, 270-day and total milk yields as dependent variables, and possible relationships were determined according to simple and multiple linear regression analysis methods. The average lactation period was 256.74 ± 2.61 days, the average 270-day additive milk yield was 2078 ± 65.26 litres and the average total milk yield was 1831 ± 89.57 litres. The daily average milk yields were 7.69 ± 0.11 and 7.08 ± 0.07 liters for 270-day and 100-day respectively. The correlation coefficients were calculated for each parity and calculated as 0.901 (p < 0.01) between the 100-day and 270-day additive yield for the general group. The simple and multiple linear regression equations were shown as [V270 = 470.72 + 1.737 V100 (R2 = 80.2%)], [V270 = 966.23 + 0.645 V100 + 0.001V1002 (R2 = 82.4%)] for the groups. As the parity of lactation increased, it was seen that the determination coefficients were increased. Finally, predicting the total lactation yield by using 100-day of partial milk yield has the highest accuracy. © 2024, Centenary University. All rights reserved.
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    The Determination of Some, Reproduction, Growth and Morphological Traits in Honamli Goats Breeds
    (Univ Namik Kemal, 2018) Karadag, Orhan; Soysal, Mehmet Ihsan
    In this study, aimed to determine some morphological traits of Honamli Goat Breed which are widely reared in Turkey's Mediterranean Region, especially The Taurus Mountains. Data on live body weight, body length, height at withers, height at rump, heart girth, chest depth, tail length, head length, forehead width, the front and rear shank circumference were collected from goats (n=200) kept by traditional farmer. Regression analysis was carried out for live weight with all the linear body measurements. The data were classified on the basis of age and gender pattern. Age and sex significantly (P<0.01) influenced all the body measurements. Live body weight and some linear body measurements were highly (P<0.01) and positively correlated for all ages. Regression analysis show thatlive weight can be estimated using measurements of chest depth, body length, chest circumference, forehead width, and front shank circumference. As regards reproductive traits birth rate, infertility, single and twin births rates were calculated, 87%, 13%, 71% and 28% respectively. The litter size and kid rate values were calculated 1.28 and 1.11 respectively. In this study, a total of 190 heads kids were used, twin and single kids birth weight 3.58 kg and 3.95 kg, weaning weight 24.94 kg and 28.69 kg, suckling period daily weight gain, 0.180 kg and 0.205 kg respectively. The average survival rate at weaning (120 days) was found 80 %.
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    Türkiye's indigenous genetic resource: Muradiye Kelebek pigeon
    (Ankara Univ, 2024) Erdem, Evren; Ozbaser, Fatma Tulin; Gurcan, Eser Kemal; Soysal, Mehmet Ihsan
    The current study was carried out to determine the morphological characteristics of the Muradiye kelebek pigeon, which has been reared for many years by breeders in the Muradiye region. The ages of pigeons were classified into two groups: 12-24 months (age group I) and 25-36 months (age group II). The male pigeons had a significantly higher trunk length (P<0.001), head width (P<0.05), beak length (P<0.001), beak depth (P<0.05), thoracic perimeter (P<0.001), and tarsus diameter (P<0.001) compared to the female pigeons. The body weight (P<0.001), chest width (P<0.05), and thoracic perimeter (P<0.01) values of age group II were higher than those of age group I. It was determined that most of the pigeons were grayish blue-eyed (69.90%) and non-crested (76.72%). It was determined that the head structure of the Muradiye kelebek pigeon was similar to the Edremit kelebek, Muradiye donek, Bursa oynari, Thrace roller, and Alabadem pigeon genotypes. The spotted plumage color of the Muradiye butterfly pigeon and the other three genotypes (jackal plumage in the Thrace roller, speckled plumage in the Edremit kelebek pigeon, and red/black galaca in the Muradiye donek pigeon) may be a common trait. Since these genotypes share some phenotypic characteristics, the phylogenetic relationships between the Muradiye butterfly pigeon and the other five pigeon genotypes (Edremit kelebek, Muradiye donek, Alabadem, Bursa oynari, and Thrace roller) should be determined by molecular studies.