Monitoring and Comparing Follicular and Luteal Function Between  Genetically High- and Low-Producing Dairy Cows by Ultrasonography

Şükrü Metin PANCARCI

Makale detayları

Monitoring and Comparing Follicular and Luteal Function Between Genetically High- and Low-Producing Dairy Cows by Ultrasonography

Yazarlar:

Şükrü Metin PANCARCI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 2, pp.141-148

Belge Tipi:

Makale

Yayın Tarihi:

1/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000772000

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Anahtar kelimeler:

Özet:

 

The objectives of this study were to investigate the effectiveness of ultrasonography in monitoring ovarian activity by  examining follicular growth and regression and studying the correlation between corpus luteum (CL) measurements and plasma  progesterone (P4) concentrations, and to compare high-and low-production genetic lines of dairy cows regarding endogenous bovine  somatotropin (bST) and milk production effects on follicular wave patterns, size and number of follicles, CL growth and plasma P4  concentrations during the estrous cycle monitored by ultrasound. Seventeen multiparous lactating Holstein cows were divided into  two groups, a low-production group (control group, n=9) and a high-production group (select group, n=8). Ovaries were examined  daily from the day after estrus until the subsequent estrus by ultrasonography to monitor follicular and luteal dynamics. Nine of the  17 estrous cycles investigated in this trial had two follicular waves with an estrous cycle length of 22.2±0.4 days with a ovulatory  (Graafian) follicle (18.1±0.4 mm), while 8 cycles had three follicular waves with an estrous cycle length of with a ovulatory  (Graafian) follicle (18.1±0.4 mm), while 8 cycles had three follicular waves with an estrous cycle length of 24.5±0.7 days with a  Graafian follicle (16.0±0.9 mm). The average length of the 2-wave estrous cycle was significantly shorter (P.

 

The objectives of this study were to investigate the effectiveness of ultrasonography in monitoring ovarian activity by  examining follicular growth and regression and studying the correlation between corpus luteum (CL) measurements and plasma  progesterone (P4) concentrations, and to compare high-and low-production genetic lines of dairy cows regarding endogenous bovine  somatotropin (bST) and milk production effects on follicular wave patterns, size and number of follicles, CL growth and plasma P4  concentrations during the estrous cycle monitored by ultrasound. Seventeen multiparous lactating Holstein cows were divided into  two groups, a low-production group (control group, n=9) and a high-production group (select group, n=8). Ovaries were examined  daily from the day after estrus until the subsequent estrus by ultrasonography to monitor follicular and luteal dynamics. Nine of the  17 estrous cycles investigated in this trial had two follicular waves with an estrous cycle length of 22.2±0.4 days with a ovulatory  (Graafian) follicle (18.1±0.4 mm), while 8 cycles had three follicular waves with an estrous cycle length of with a ovulatory  (Graafian) follicle (18.1±0.4 mm), while 8 cycles had three follicular waves with an estrous cycle length of 24.5±0.7 days with a  Graafian follicle (16.0±0.9 mm). The average length of the 2-wave estrous cycle was significantly shorter (P.

Makale detayları

Monitoring and Comparing Follicular and Luteal Function Between Genetically High- and Low-Producing Dairy Cows by Ultrasonography

Yazarlar:

Şükrü Metin PANCARCI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 2, pp.141-148

Belge Tipi:

Makale

Yayın Tarihi:

1/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000772000

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Cow

Follicle

Corpus luteum

Progesterone

Bovine somatotropin

Ultrasonography

Reproduction

Milk Production.

Sayı

Makale detayları

Yazarlar: Şükrü Metin PANCARCI

Yayıncı: TUBITAK

Dergi: Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 2, pp.141-148

Belge Tipi: Makale

Yayın Tarihi: 1/1999

Belge Dili: Türkçe

Document ID (Org No.): 2000772000

Sıklık: İki Aylık

eISSN: 1303-6181

pISSN: 1300-0128

Sayı

Yazarlar:

Şükrü Metin PANCARCI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 2, pp.141-148

Belge Tipi:

Makale

Yayın Tarihi:

1/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000772000

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128