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by
Mete Yanar |
Total Records (
8 ) for
Mete Yanar |
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Olcay Guler
,
Mete Yanar
,
Recep Aydin
,
Bahri Bayram
,
Unsal Dogru
and
Sinan Kopuzlu
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The research was performed to determine the effect of non-genetic factors on milkability characteristics and to estimate genetic parameters and relationships among Milk Flow Rate (MFR), Milking Time (MT) and milk yields of Holstein Friesian cows reared in Eastern Region of Turkey. The data used in this study consisted of 1267 observations of MT and MFR on 177 lactations of 91 Holstein Friesian cows. The least squares means for MFR, MT and Total Test Day Milk Yield (TTDMY) were 1.049 kg min-1, 5.83 min and 12.31 kg, respectively. Parity, stage of lactation and calving season affected (p<0.01) on the MFR, MT and TTDMY. Multiparous cows had higher MT and TTDMY (p<0.01) than primiparous cows. Calving season affected (p<0.01) on MT, MFR and TTDMY. The heritability coefficients for MFR, MT and TTDMY were 0.21, 0.23 and 0.23, respectively. The positive genetic correlations of MFR with TTDMY, actual milk yield and 305 days milk yield were 0.62, 0.49 and 0.48, respectively, while genetic correlations between MT and TTDMY, actual milk yield and 305 days milk yield were 0.20, 0.28, 0.34, respectively. Phenotypic and genetic correlations between MFR and MT were -0.49 and -0.63, respectively. |
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Recep Aydin
,
Abdulkerim Diler
,
Mete Yanar
,
Rydvan Kocyigi
and
Tugca Ozkilicci
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The study was carried out to determine the effect of Direct-fed Microbials (DFM) plus digestive enzymes supplement on growth performance of Holstein Friesian calves. Eighteen Holstein Friesian calves were assigned to 1 of 2 treatments, DMF plus enzymes supplement, Control with no DMF plus enzymes additive. The DMF plus enzymes supplement in pre-weaning period was offered to calves after mixing with milk. Then, it was given with starters during post-weaning period. Total of 4 kg head 1 whole milk was fed calves in the morning and evening. While, starter ration was limited 2 kg day 1, dry hay and water were offered ad libitum. Calves were weaned abruptly at 8 weeks of ages. The overall results revealed that weight and weight gains in various stages of the growth of the calves as well as gains in body measurements and feed efficiency ratio were not significantly affected by feeding DMF plus enzymes supplement. However, the DFM plus enzymes supplement resulted in a decrease in the incidence of diarrhea. |
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Olcay Guler
,
Mete Yanar
,
Bahri Bayram
and
Jale Metin
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The effects of three levels of milk replacer on growth performance of Brown Swiss calves (15 males
and 15 females) were investigated in the study. The amount of daily milk replacer given to calves in the
treatment groups was kept constant at 6, 7 and 8% of their birth weight. The calves were weaned at 35 days of
age. The weaning weight, 4 and 6 months weights were, respectively 42.0±1.2, 93.5±4.3 and 142.0±6.3 kg for
calves in 6% group, 42.6±1.2, 96.4±4.2 and 146.8±6.3 kg for those in 7% group and 45.4±1.2, 89.6±4.2 and
133.9±6.3 kg for young animals in 8% group. The weights were not significantly affected by the levels of the
milk replacer. Levels of the milk replacer feeding did not affected significantly on the daily weight gains and
gains in the body measurements in the pre- and post-weaning periods of the growth. Overall results of the
study suggested that it could be possible to drop the level of milk replacer from 8 to 6% of birth weight without
causing a detrimental influence on the growth characteristics of Brown Swiss calves.
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Feyzi Ugur
,
Mine Dosay Akbulut
and
Mete Yanar
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With this study, it was aimed to form a breeding schedule, suggesting to weaning the calves at 35 days age and at the most suitable live weight. Brown Swiss calves weaned at 35 days age were separated into three groups. Calf groups which gained 10-20, 21-29 and 30-50% live weight based on birth weight at weaning time were named as G1, G2 and G3, respectively. The average weight gain of the groups between birth and weaning periods, were obtained as 15.2±1.9, 25.9±2.4 and 40.3±1.9%, respectively (p = 0.00). The effects of the groups on daily weight gains in the periods between birth and 6 months were found insignificant (p = 0.11). Similarly, the effect of the groups on total gains in body measurements in the periods between weaning and four months were also found insignificant. As a result, the growth performance of the Brown Swiss, weaned with gaining averagely 15.2, 25.9 and 40.3% weight compare to their birth weight, at 35 days age, were found similar. |
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Abdulkadir Ozluturk
,
Olcay Guler
,
Mete Yanar
,
Omer Akbulut
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Necdet Unlu
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Sinan Kopuzlu
and
Ozmen Biberoglu
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The effects of two different initial ages of fattening on the weight gain, feed intake and feed efficiency characteristics as well as carcass and non-carcass components of the native Eastern Anatolian Red cattle raised in Eastern region of Turkey were studied in this research. According to the age at the beginning of the fattening, 61 EAR male cattle was allocated into two age treatment groups named as group I (9-14 months of ages) and group II (17-22 months of ages). Total weight gain throughout the fattening was numerically greater in younger group compared with the elderly group, however, the difference was not statistically significant. Total dry alfalfa hay and concentrate intake as dry matter did not differ significantly between age groups. However, feed efficiency ratios were significantly (p<0.01) influenced by initial age of the fattening in favour of younger EAR cattle. Carcass cutability and yield grade values of the EAR cattle in group I did not differ significantly from those in group II. Overall results of the study revealed that as initial age of the fattening lowers, fattening performance and feed efficiency ratio of EAR male cattle improved, but, carcass quality traits were not adversely influenced. |
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Bahri Bayram
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Mete Yanar
and
Omer Akbulut
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The study was aimed to describe changes caused by conversion to organic dairy farming in Turkey, focusing on reproductive and milk production traits. The data used in this research were obtained from reproductive and milk records of Holstein Friesian cows reared in a private organic dairy farm. The results revealed that cows under organic management had shorter days open and calving interval values compared with cows reared under pre-organic system. Actual and 305 days milk yields of cattle in organic system were greater than these of cows in pre-organic system. Lactation duration was also significantly influenced by farming system and calving season, but days dry was not affected by none the non-genetic factors. |
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Recep Aydin
,
Mete Yanar
,
Olcay Guler
,
Sadrettin Yuksel
,
Feyzi Ugur
and
Leyla Turgut
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The study was carried out to determine the effect of environmental factors on milkability traits and to estimate genetic parameters and relationships among milk yields, milk flow rate (MFR) and milking time (MT) of Brown Swiss cows reared in Eastern Region of Turkey. The data used in this study consisted of 2051 observations of milking time and milking flow rate on 315 lactations of 163 cows. The averages for MFR, MT and total test day milk yield (TTDMY) were 0.972 kg min 1, 5.46 min and 11.35 kg, respectively. Stage of lactation and parity had significant (p<0.01) effect on the MFR, MT and TTDMY. Multiparous cows had higher MT and TTDMY (p<0.01) than primiparous cows. Calving season only significantly (p<0.01) affected on TTDMY. The heritability estimates for MFR, MT and TTDMY were 0.37, 0.37 and 0.21, respectively. The positive genetic correlations of MFR with actual milk yield, 305 days milk yield, TTDMY were 0.423, 0.585 and 0.735, respectively, while negative genetic correlations between MT and milk yield traits were calculated. The higher heritability values for MFR and MT suggested that selection of a good milkability seems to be promising and genetic improvement in MFR and MT might be achieved through selection for milk production. |
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Mete Yanar
,
Sadrettin Yuksel
and
Ugar Zulkadir
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The study was carried out to compare growth, weight gain and feed efficiency traits of Brown Swiss calves which were fed milk replacer and raised in individual, group and individual+group housing systems. Weights, gains in weights and body measurements at various ages were determined. The results revealed that group-housing could be attractive concerning growth rate of Brown Swiss calves, easiness and economical construction of the group pens, although young animals in group pens had slightly less favourable feed conversion efficiency ratio. |
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