Validation of a mathematical model of the bovine estrous cycle for cows with different estrous cycle characteristics
نویسندگان
چکیده
منابع مشابه
Mechanisms regulating follicle wave patterns in the bovine estrous cycle investigated with a mathematical model.
A normal bovine estrous cycle contains 2 or 3 waves of follicle development, and ovulation takes place in the last wave. However, the biological mechanisms that determine whether a cycle has 2 or 3 waves have not been elucidated. In a previous paper, we described a mathematical model of the bovine estrous cycle that generates cyclical fluctuations of hormones, follicles, and corpora lutea in es...
متن کاملA simple mathematical model of the bovine estrous cycle: follicle development and endocrine interactions.
Bovine fertility is the subject of extensive research in animal sciences, especially because fertility of dairy cows has declined during the last decades. The regulation of estrus is controlled by the complex interplay of various organs and hormones. Mathematical modeling of the bovine estrous cycle could help in understanding the dynamics of this complex biological system. In this paper we pre...
متن کاملChanges of acute-phase proteins during different phases of the estrous cycle in Ovsynch-synchronized Holstein cows
Background: Acute-phase proteins (APPs) may be increased due to different stresses during estrus phase in farm animals. Aims: Determining changes of APPs at different phases of non-synchronized estrous cycle group (NSEG), and Ovsynch-synchronized estrous cycle group (SEG) in Holstein cows. Methods: Twelve non-pregnant clinically and paraclinicaly healthy Holstein cows with a body condition scor...
متن کاملReview of Follicular Growth and the Bovine Estrous Cycle
Introduction Figure 1 summarizes some key aspects of the bovine estrous cycle. Changes in the 2 key structures on the ovary, the preovulatory follicle and the corpus luteum, are emphasized in this figure. The function of 4 important hormones is also summarized in this figure. Estradiol-17ß from the preovulatory follicle causes the cow to manifest estrus behaviour and have an LH surge. The LH su...
متن کاملEstrous Cycle Synchronization In
E STRUS and ovulation in gilts have been successfully inhibited by daily injections of progesterone (Ulberg et al., 1951; Baker et al., 1954) and more recently by the inclusion of progestational compounds in the feed (Nellor, 1960; Dzuik and Baker, 1962). The successful use of orally active progestational agents to synchronize the estrous cycles of gilts without a subsequent reduction in fertil...
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ژورنال
عنوان ژورنال: Animal
سال: 2017
ISSN: 1751-7311
DOI: 10.1017/s175173111700026x