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Disease organisms can be spread on contaminated insemination equipment, clothing, and hands. Without strict attention to hygiene, artificial insemination has the potential to spread disease organisms from: Inseminators can never afford to be complacent about hygiene. Just because animals do not show visible signs of disease does not mean they are not carrying a transmissible …

Section Five: Important diseases to consider during artificial insemination Read More »

Release of the mature egg occurs 24-30 hours from the commencement of the standing heat. The site on the ovary where the egg was released collapses, and the structure re-forms to become a corpus luteum (CL). Optimum fertility of the egg is 6 to 8 hours after ovulation (Average 6 hours for conventional frozen semen, …

Section Four: Becoming pregnant Read More »

A clear understanding of the anatomy and physiology of reproduction in cattle is the necessary foundation for a successful artificial insemination program. Before attempting to inseminate cattle, you must have a clear picture of the anatomy of the female reproductive tract. This includes an understanding of the many signs of oestrus and when cattle should …

Section One: Reproductive anatomy and physiology Read More »

The oestrus cycle is the hormonal regulated reproductive cycle of cattle, generally defined as a period from one ovulation to the next. In normal, empty cattle the regular oestrous cycle repeats every 18 to 24 days in response to changing levels of different hormones. Stages of the oestrus cycle Select each of the + signs …

Section Two: The oestrus cycle Read More »

In this video, Dairy Australia’s Steph Bullen explains the oestrus cycle, commonly referred to as the heat period. The diagram below explains what happens when a cow becomes pregnant and what happens when a cow does not become pregnant. Select image to view fullscreen. Oestrus signs and behaviour In this video, Steph explains what signs …

Section Three: How to detect cows on heat Read More »

Release of the mature egg occurs 24-30 hours from the commencement of the standing heat. The site on the ovary where the egg was released collapses, and the structure re-forms to become a corpus luteum (CL). Optimum fertility of the egg is 6 to 8 hours after ovulation (Average 6 hours for conventional frozen semen, …

Section Four: Becoming pregnant Read More »

Disease organisms can be spread on contaminated insemination equipment, clothing, and hands. Without strict attention to hygiene, artificial insemination has the potential to spread disease organisms from: Inseminators can never afford to be complacent about hygiene. Just because animals do not show visible signs of disease does not mean they are not carrying a transmissible …

Section Five: Important diseases to consider during artificial insemination Read More »

A clear understanding of the anatomy and physiology of reproduction in cattle is the necessary foundation for a successful artificial insemination program. Before attempting to inseminate cattle, you must have a clear picture of the anatomy of the female reproductive tract. This includes an understanding of the many signs of oestrus and when cattle should …

Section One: Reproductive anatomy and physiology Read More »

The oestrus cycle is the hormonal regulated reproductive cycle of cattle, generally defined as a period from one ovulation to the next. In normal, empty cattle the regular oestrous cycle repeats every 18 to 24 days in response to changing levels of different hormones. Stages of the oestrus cycle Select each of the + signs …

Section Two: The oestrus cycle Read More »

In this video, Dairy Australia’s Steph Bullen explains the oestrus cycle, commonly referred to as the heat period. The diagram below explains what happens when a cow becomes pregnant and what happens when a cow does not become pregnant. Select image to view fullscreen. Oestrus signs and behaviour In this video, Steph explains what signs …

Section Three: How to detect cows on heat Read More »