Artificial Insemination

Resumen

A single Holstein bull with outstanding milk-yield genetics can sire only a few hundred calves in a lifetime of natural mating. The same bull's semen, collected once and frozen, can sire tens of thousands, on farms he will never visit, years after he has died. That is the promise of artificial insemination: it detaches superior genetics from the physical limits of a single animal covering a single herd.

In this lesson you will learn exactly what AI is and how it differs from natural mating, follow the procedure from semen collection through evaluation, dilution, freezing and thawing to the moment of insemination, and weigh the real advantages against the real disadvantages, including the cold-chain problem that makes AI harder to run in rural Nigeria than in a temperate dairy country.

Objetivos

  1. Define artificial insemination
  2. State the procedure involved in artificial insemination
  3. Explain the advantages of artificial insemination over natural mating
  4. State the disadvantages of artificial insemination
  5. Explain the equipment used in artificial insemination

Nota de la lección

A cattle breeder near Kaduna wants his cows served by an exceptional bull kept hundreds of kilometres away in Zaria. Transporting either animal is expensive and risky. Artificial insemination solves this without moving either: only the semen travels, so one bull's genetics can reach herds he never meets.

Evaluación de la lección

Felicitaciones por completar la lección del Artificial Insemination. Ahora que has explorado el conceptos e ideas clave, es hora de poner a prueba tus conocimientos. Esta sección ofrece una variedad de prácticas Preguntas diseñadas para reforzar su comprensión y ayudarle a evaluar su comprensión del material.

Te encontrarás con una variedad de tipos de preguntas, incluyendo preguntas de opción múltiple, preguntas de respuesta corta y preguntas de ensayo. Cada pregunta está cuidadosamente diseñada para evaluar diferentes aspectos de tu conocimiento y habilidades de pensamiento crítico.

Utiliza esta sección de evaluación como una oportunidad para reforzar tu comprensión del tema e identificar cualquier área en la que puedas necesitar un estudio adicional. No te desanimes por los desafíos que encuentres; en su lugar, míralos como oportunidades para el crecimiento y la mejora.

  1. Artificial insemination differs from natural mating mainly because: A. It always produces twins B. Semen is collected and manually deposited into the female rather than through direct mating C. It does not require a healthy sire D. It removes the need to detect oestrus Answer: B
  2. In the artificial insemination procedure, semen is usually frozen for storage in: A. Distilled water B. A refrigerator at 4 degrees Celsius C. Liquid nitrogen D. Saline solution Answer: C
  3. Which instrument is used to deposit thawed semen into the female's reproductive tract? A. Artificial vagina B. AI gun (insemination pipette) C. Rectal palpation glove D. Extender bottle Answer: B
  4. Which of the following is an advantage of artificial insemination over natural mating? A. It removes the need for skilled personnel B. It allows a single superior sire to service far more females C. It guarantees pregnancy regardless of timing D. It eliminates the cost of semen straws Answer: B
  5. A major disadvantage of artificial insemination in many rural Nigerian communities is: A. Too many bulls are required B. Natural mating is illegal C. Maintaining the liquid nitrogen cold chain is difficult D. It increases disease transmission between animals Answer: C

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Preguntas Anteriores

¿Te preguntas cómo son las preguntas anteriores sobre este tema? Aquí tienes una serie de preguntas sobre Artificial Insemination de años anteriores.

WAEC SSCE - Animal Husbandry - 2021

Pregunta 1 Informe

(a)i) Explain the term brooding as used in animal husbandry.

(ii) State four routine activities which are carried out in a brooder house.

(b) State four effects of parasites in livestock production.

(c) Mention four ways of controlling liver fluke in sheep production.

(d) Define the term artificial insemination as used in animal production.

(ii) State four advantages of artificial insemination in cattle production.

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