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Abstract

For 150 ewes, the duration of oestrus averaged 30.09 plus or minus 0.56 h (6-40 h); it was 25-33.30 h in 75% of ewes. Length of oestrous cycle averaged 17.6 days (10-28), and it was 16-18 days in 81.4% of ewes. For ewes inseminated 3, 12 and 26 h after the onset of oestrus, the NR rate to 1st ...

Author(s)
Cetinkaya, K.
Citation
Lalahan Zootekni Arastirma Enstitusu Dergisi, 1979, 19, 3-4, pp 103-120
Abstract

The effects of luprostiol injections in early (days 5 to 9 of the oestrous cycle) and late (days 10 to 15 of the cycle in heifers and days 10 to 14 in cows) dioestrus on the injection to oestrus interval and pregnancy rates were examined after fixed time inseminations at 72 and 96 h after...

Author(s)
Alan, M.; Çoyan, K.; Aksoy, M.; Tekeli, T.; Ișik, K.; Sezen, S.
Citation
Tierärztliche Umschau, 1993, 48, 9, pp 587-590
Abstract

Three experiments were performed to determine the optimum time for insemination of Karacabey Merino sheep, 559 ewes and 2 rams from Bursa (Turkey) were used. In the 1st experiment, 60 ewes and 2 rams were used. Ewes were divided into 3 groups of 20. Ewes in each group were inseminated once, twice...

Author(s)
Gökçen, H.; Soylu, M. K.; Doğan, İ.; Erzurum, F.
Citation
Veterinarium, 1998, 9, 1, pp 56-60
Abstract

Three-year-old Merino ewes (n=30) and rams (n=6) were employed for the following study. The ewes were randomly divided into three groups. 18 mg melatonin (Regulin) was implanted in ewes belonging to Group I (n=10). Thirty-five days following implantation, teaser rams were introduced and ewes...

Author(s)
Emrellİ, A. Z.; Horoz, H.; Tek, Ç.
Publisher
Veteriner Fakültesi Dekanlığı, Istanbul Üniversitesi, Istanbul, Turkey
Citation
Veteriner Fakültesi Dergisi (Istanbul), 2003, 29, 2, pp 267-275
Abstract

The aim of this study was to stimulate the oestrous cycle and shorten the time between calving and succeeding pregnancy by using GnRH and PGF2α in cows that do not return to oestrus until the 55th day postpartum. 40 Holstein cows were (2-10 years of age) divided into four groups. At day zero, 250...

Author(s)
Sabuncu, A.; Kaya, H. H.; Tek, Ç.
Publisher
Veteriner Fakültesi Dekanlığı, Istanbul Üniversitesi, Istanbul, Turkey
Citation
Veteriner Fakültesi Dergisi (Istanbul), 2003, 29, 2, pp 277-284
Abstract

293 Anatolian cows housed in small barns were examined for infertility problems. The total incidence of reproductive problems in small barns was 44.70%. The conception rates were 68.5 and 51.2% for cows and heifers at first service, respectively. The incidence of delayed ovulation, cystic ovarian...

Author(s)
Kaya, M.; Gulyuz, F.; Tasal, I.; Uslu, B. A.
Publisher
Indian Veterinary Association, Chennai, India
Citation
Indian Veterinary Journal, 2005, 82, 9, pp 957-958
AbstractFull Text

The aim of this study was to monitor luteal activity in Zavot cows between calving and day 42 of gestation by milk progesterone enzymeimmunoassay (EIA) and thus to assess the sensitivity of this test in the diagnosis of early pregnancy and to determine the lengths of anoestrous periods. For that...

Author(s)
Çenesİz, M.; Uzun, M.
Publisher
Yüzüncü Yıl Üniversitesi, Van, Turkey
Citation
Yüzüncü yıl Üniversitesi Veteriner Fakültesi Dergisi, 2010, 21, 3, pp 153-157
AbstractFull Text

It is known that the pituitary FSH and LH stores are dramatically depleted during the anoestrous in seasonal breeders. Hence, the aim of this study was to evaluate the effect of deslorelin implant (a GnRH analogue) to induce oestrus in suckling goats. Suckling goats (n=21) of coloured Mohair breed...

Author(s)
Uslu, B. A.; Șendağ, S.; Tașal, İ.; Gülyüz, F.; Uçar, Ö.; Wehrend, A.
Publisher
Kafkas Üniversitesi, Veteriner Fakültesi Dergisi, Kars, Turkey
Citation
Kafkas Üniversitesi Veteriner Fakültesi Dergisi, 2012, 18, 6, pp 1067-1071
Abstract

The aim of the present study was to determine the possible relationship between bovine viral diarrhoea (BVD) virus infection and the appearance of cervical mucous discharge (CMD) and the reproductive performance of cows in oestrus. For this purpose, CMD from 97 Holstein cows in oestrus was...

Author(s)
Yavru, S.; Kale, M.; Gulay, M. S.; Yapİcİ, O.; Bulut, O.; Ata, A.
Publisher
Akadémiai Kiadó, Budapest, Hungary
Citation
Acta Veterinaria Hungarica, 2013, 61, 2, pp 281-289
AbstractFull Text

The purpose of this study was to investigate the effect of parity and reproductive status on peak milk yield and some reproductive traits of Holstein cows reared in a private dairy farm of Konya province. Parities were 1 (n=105), 2 (n=97), 3 (n=42), 4 (n=72) and 5+ (n=24). Investigated characters...

Author(s)
Erat, S.; Kalender, H.; Çelİk, O.
Publisher
Hayvancılık Merkez Araștırma Enstitüsü Müdürlüğü, Ankara, Turkey
Citation
Lalahan Hayvancılık Araștırma Enstitüsü Dergisi, 2013, 53, 1, pp 17-27

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