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Animal Science Database

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Abstract

The goals of this study were to assess whether the injection of 1 mg of estradiol cypionate (ECP) at 13 days after service of artificial insemination (AI) increases fertility in the study subject and if the same dose injected in the near estrus (20±1 days) after artificial insemination services...

Author(s)
Leyva, C.; Aguilar, D.; Morales, J. L.; Pérez-López, S.; Véliz, F. G.; Soto-Domínguez, A.; Morán Martínez, J.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2016, 44, 1, pp 24-26
Abstract

The objective of this study was to assess the use of ultrasound and Metricheck® intravaginal device to select dairy cows for a timed artificial program (TAI). There were evaluated lactating Holstein cows (n=138) with an average of 54 days in milk (DIM) and average BCS 2.5 maintained in...

Author(s)
Guido, F. C. L.; Guido, S. I.; Alencar, L. F. de; Bartolomeu, C. C.; Evêncio Neto, J.
Publisher
Colégio Brasileiro de Reprodução Animal, Belo Horizonte, Brazil
Citation
Revista Brasileira de Reprodução Animal, 2017, 41, 3, pp 678-682
Abstract

This study aimed to contribute to understanding the interface between reproductive and nutritional energetic physiology in contemporary dairy cattle. Multiparous Holstein cows (n=32) between 70 and 180 days in milk were used in a study starting 10 d prior to the artificial insemination (AI) date...

Author(s)
Gomez, N. A.; Conley, A. J.; Robinson, P. H.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 189, pp 136-145
Abstract

The objective was to compare luteal area (LA), luteal blood flow (LBF), and progesterone (P4) concentration before and after artificial insemination (AI) in pregnant and open cows in the diestrus preceding insemination and during the first 21 d after insemination. A number of 119 multiparous German ...

Author(s)
Berger, H.; Lietzau, M.; Tichy, A.; Herzog, K.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 104, pp 115-119
Abstract

Objective: To determine the effects of ovarian structures present at OvsynchTM enrolment, disease history, lactation variables and times bred on pregnancy per fixed-time artificial insemination (FTAI) following fixed-time insemination after Ovsynch and to determine the relationship between the size ...

Author(s)
Ingenhoff, L.; Hall, E.; Ranjbar, N. I. S.; House, J. K.
Publisher
Wiley, Melbourne, Australia
Citation
Australian Veterinary Journal, 2017, 95, 4, pp 110-117
Abstract

The productive and reproductive characteristics of Brown Swiss (B) cross-bred cows were investigated by comparing with those of Holstein (H) cows housed in the same barn. Additionally, their hair cortisol levels were analyzed to evaluate the extent of stress experienced during dry and lactation...

Author(s)
Endo, N.; Kuroki, R.; Tanaka, T.
Publisher
Wiley, Tokyo, Japan
Citation
Animal Science Journal, 2017, 88, 10, pp 1506-1512
Abstract

This field study investigated the effects of dystocia on the postpartum complications, milk production, and reproductive performance in Holstein dairy cows. Calving difficulty was scored on a rank scale of 1 to 5. Cows with a calving score of three or higher were judged to have dystocia. The cows...

Author(s)
Kim DongUk; Lee SooChan; Jeong JaeKwan; Choi InSoo; Moon SungHo; Kang HyunGu; Kim IllHwa
Publisher
Korean Society of Veterinary Clinics, Seoul, Korea Republic
Citation
Journal of Veterinary Clinics, 2016, 33, 2, pp 87-92
Abstract

The objective of this study was to determine the effect of timing of artificial insemination on pregnancy rates, calving rates, abortion rates, twinning rates, and calf gender ratio after synchronization of ovulation with Ovsynch protocol in Holstein dairy cows. The ovulation of 219 lactating...

Author(s)
Bayrİl, T.; Yİlmaz, O.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2013, 45, 2, pp 411-416
Abstract

Sex preselection by flow sorting of X- and Y-sperm has been proven to be an efficient and economically feasible strategy for use in Holstein dairy cow breeding, and previous reports have demonstrated the feasibility of altering the sex ratio in buffalo species by using sexed semen in either ...

Author(s)
Lu YangQing; Liao YanQiong; Zhang Ming; Yang BingZhuang; Liang XianWei; Yang XiaoGan; Lu ShengSheng; Wu ZhuYue; Xu HuiYan; Liang YunBin; Lu KeHuan
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2015, 84, 6, pp 862-867
Abstract

Fusion failure of the Müllerian ducts is thought to occur congenitally in cattle. We aimed to elucidate the contribution of incomplete fusion of the Müllerian ducts to reproductive difficulties in dairy cattle. We observed the vaginas of Holstein cattle to classify the anomalies into mild and...

Author(s)
Ishiyama, D.; Nakamura, Y.; Tanaka, T.; Magata, F.; Matsuda, F.; Maeda, K.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 123, pp 209-215

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