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Introductory Lecture. ANP502: Reproductive Physiology. TERM PAPER. INFERTILITY IN FARM ANIMALS. Lecturers. O.M. Onagbesan A.O. Ladokun I.J. James O.A. Osinowo. Defining Animal Reproduction. Animal reproduction: Process by which offspring are produced by male and female parents.

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Introductory lecture

Introductory Lecture

ANP502:Reproductive Physiology


Term paper
TERM PAPER

  • INFERTILITY IN FARM ANIMALS


Lecturers
Lecturers

  • O.M. Onagbesan

  • A.O. Ladokun

  • I.J. James

  • O.A. Osinowo


Defining animal reproduction
Defining Animal Reproduction

  • Animal reproduction: Process by which offspring are produced by male and female parents.

  • Involves heterosexual mating, conception, pregnancy, parturition and lactation.

  • Conception results from fusion of male and female gametes (i.e. spermatozoon and ovum), known as fertilization.

  • Animals must first attain reproductive age (puberty) before being capable of producing gametes.

  • Reproduction involves close coordination of various physiological events to be successful. This is usually achieved through the action of reproductive hormones.


Interdisciplinary nature of animal reproduction
Interdisciplinary nature of Animal reproduction

  • Proper understanding of animal reproduction requires knowledge in diverse fields such as:

    Reproductive physiology, endocrinology,

    environmental physiology, cell biology,

    immunology, genetics, biochemistry, sociology,

    reproductive diseases, psychology, embryology,

    obstetrics and so on.


Animal reproduction and economic livestock production
Animal reproduction and economic livestock production

  • Livestock products such as milk and eggs are directly from reproductive processes.

  • Meat production depends on production of young animals (reproduction) for growing and fattening.

  • Profitability of livestock enterprise largely depends on reproductive efficiency.


Role of reproduction in genetic improvement
Role of reproduction in genetic improvement

DGy = SD * h2

GI

where

SD = selection differential

h2 = heritability estimate, and

GI = generation interval in years.


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