Class: Senior Secondary School 1 (SS1 / SSS 1)
Term: Second Term
Week: 4
Age: 15 years
Duration: 45 minutes
Subject: Animal Husbandry
Curriculum Theme: Trade
Previous Lesson: Reproduction Process Of Livestock: Poultry Egg.
Topic: Reproductive hormones
Subject Matter: Oestrogen, Progesterone, Relaxin, Oxytocin, Testosterone, Androgen

Specific Objectives

By the end of the lesson, pupils should be able to:

Cognitive Domain:

Define reproductive hormones.
List at least five reproductive hormones.
State the roles of Oestrogen, Progesterone, Relaxin, Oxytocin, Testosterone, and Androgen in animals.

Affective Domain:

Appreciate the importance of reproductive hormones in animal production.
Show interest in learning more about animal physiology.

Psychomotor Domain:

Identify different reproductive hormones on charts or diagrams.
Relate the functions of hormones to practical animal breeding scenarios.

Discuss with peers the impact of hormone imbalance on animal reproduction.
Collaborate in identifying various reproductive hormones and their functions.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Animal Husbandry.
Lagos State Unified Scheme of Work for Senior Secondary Schools.
Ojo, D.O. (2018). Essential Animal Husbandry for Senior Secondary Schools. University Press PLC.
https://www.agrifarming.in/animal-husbandry/role-of-hormones-in-animal-reproduction/
https://www.britannica.com/science/reproductive-hormone/

Instructional Materials

The teacher will teach this lesson with the aid of:

Charts showing different reproductive hormones and their target organs.
Diagrams illustrating the endocrine system in farm animals.
Whiteboard and markers.

Rationale for the Lesson

This lesson helps pupils understand the chemical regulators that control reproduction in animals. Knowing about these hormones is important for successful animal breeding and management, which directly impacts productivity in animal husbandry.

Prerequisite/Previous Knowledge

Pupils should have basic knowledge of the anatomy of farm animals and the concept of reproduction in animals.

Lesson Content/Board Summary

Reproductive Hormones in Animals

Reproductive hormones are chemical messengers produced by endocrine glands that regulate the processes of reproduction in animals. They control sexual development, mating behavior, pregnancy, and lactation.

Oestrogen

Oestrogen is a group of steroid hormones primarily produced by the ovaries in females. It is responsible for the development of female secondary sexual characteristics and plays a key role in the oestrous cycle.

The roles of Oestrogen include:

Promoting the development of female reproductive organs.
Initiating oestrous behavior (heat) in females.
Preparing the uterus for pregnancy.
Controlling the growth of mammary glands.

Progesterone

Progesterone is a steroid hormone primarily produced by the corpus luteum in the ovary after ovulation. It is often referred to as the “pregnancy hormone” due to its role in maintaining gestation.

The roles of Progesterone include:

Maintaining pregnancy by preventing uterine contractions.
Promoting the development of the uterine lining to support the embryo.
Inhibiting the release of other hormones that might cause ovulation during pregnancy.
Assisting in mammary gland development for milk production.

Relaxin

Relaxin is a peptide hormone produced by the ovaries and placenta. Its primary function is to prepare the reproductive tract for parturition (childbirth).

The roles of Relaxin include:

Relaxing the ligaments in the pelvis.
Softening and dilating the cervix during late pregnancy.
Facilitating the passage of the fetus through the birth canal.

Oxytocin

Oxytocin is a peptide hormone produced by the hypothalamus and released by the posterior pituitary gland. It is involved in both milk ejection and uterine contractions.

The roles of Oxytocin include:

Stimulating uterine contractions during parturition.
Triggering milk ejection (milk let-down) from the mammary glands during suckling.
Influencing maternal bonding behavior.

Testosterone

Testosterone is the primary male sex hormone, an androgen, produced mainly by the testes. It is responsible for the development of male secondary sexual characteristics and sperm production.

The roles of Testosterone include:

Promoting the development of male reproductive organs.
Stimulating spermatogenesis (sperm production).
Developing male secondary sexual characteristics (e.g., muscle mass, deeper voice, horn growth).
Influencing male libido and aggressive behavior.

Androgen

Androgen is a group of steroid hormones, including testosterone, that primarily influence the development and maintenance of male characteristics. While testosterone is the most well-known, other androgens also play roles.

The general roles of Androgens include:

Controlling the development and function of male reproductive organs.
Promoting protein synthesis and muscle growth.
Regulating male sexual behavior.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and asks them to recall what they know about reproduction in animals. The teacher then introduces the topic by explaining that specific chemicals regulate these processes.
Pupils’ Activity: Pupils respond to the teacher’s questions and listen attentively.
Learning Point: Pupils recall prior knowledge about animal reproduction and are introduced to the concept of hormones.

Step 2: Defining Reproductive Hormones

Time: 5 minutes
Teaching Skill: Explanation/Definition
Teacher’s Activity: The teacher defines reproductive hormones as chemical messengers that regulate reproductive processes in animals. The teacher explains that these hormones are produced by endocrine glands.
Pupils’ Activity: Pupils listen, take notes, and ask questions for clarification.
Learning Point: Pupils understand the general definition of reproductive hormones.

Step 3: Discussion on Oestrogen and Progesterone

Time: 10 minutes
Teaching Skill: Discussion/Elaboration
Teacher’s Activity: The teacher displays charts showing female reproductive hormones. The teacher explains the sources and roles of Oestrogen and Progesterone, highlighting their importance in the female reproductive cycle and pregnancy.
Pupils’ Activity: Pupils observe the charts, participate in the discussion, and note down the key functions of Oestrogen and Progesterone.
Learning Point: Pupils learn about Oestrogen and Progesterone and their specific functions in female animals.

Step 4: Discussion on Relaxin and Oxytocin

Time: 7 minutes
Teaching Skill: Explanation/Questioning
Teacher’s Activity: The teacher proceeds to explain the roles of Relaxin and Oxytocin, emphasizing their functions during parturition and lactation. The teacher asks questions to ensure understanding.
Pupils’ Activity: Pupils listen, answer questions, and record the functions of Relaxin and Oxytocin.
Learning Point: Pupils understand the roles of Relaxin and Oxytocin in childbirth and milk release.

Step 5: Discussion on Testosterone and Androgen

Time: 8 minutes
Teaching Skill: Explanation/Comparison
Teacher’s Activity: The teacher displays charts showing male reproductive hormones. The teacher explains the sources and roles of Testosterone and Androgen, distinguishing between them and emphasizing their importance in male reproduction and development.
Pupils’ Activity: Pupils observe the charts, listen to the explanation, and note the functions of Testosterone and Androgen.
Learning Point: Pupils learn about Testosterone and Androgen and their specific functions in male animals.

Step 6: General Overview and Recap

Time: 5 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher briefly recaps all the hormones discussed, their sources, and their main functions, using the board summary. The teacher encourages pupils to ask any remaining questions.
Pupils’ Activity: Pupils review their notes, ask questions, and mentally consolidate the information.
Learning Point: Pupils reinforce their understanding of all the reproductive hormones covered.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define reproductive hormones.
List any three reproductive hormones discussed.
State one major role of Oestrogen in female animals.
Explain the primary function of Oxytocin during parturition.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 2 minutes
Teaching Skill: Closure
Teacher’s Activity: The teacher summarizes the lesson by reminding pupils about the importance of reproductive hormones in animal production. The teacher assigns homework: “Research one practical application of synthetic reproductive hormones in animal husbandry.”
Pupils’ Activity: Pupils listen to the summary and copy down the homework assignment.
Learning Point: Pupils understand the practical relevance of the lesson and are encouraged to research further.

Lesson Keywords

Oestrogen – Hormone primarily responsible for female sexual characteristics and oestrous cycle.
Progesterone – Hormone important for maintaining pregnancy.
Relaxin – Hormone that relaxes pelvic ligaments and softens the cervix during birth.
Oxytocin – Hormone that causes uterine contractions and milk let-down.
Testosterone – Primary male sex hormone responsible for male characteristics and sperm production.
Androgen – A group of hormones, including testosterone, that control male characteristics.

Differentiation

For pupils who grasp concepts quickly, the teacher can encourage them to research specific hormonal disorders in farm animals. For pupils needing more support, the teacher will provide simplified diagrams and allow for peer-assisted learning during discussion times.

Note for teachers using this lesson plan

Ensure that the charts and diagrams used are clear and visible to all pupils. Encourage active participation and questions to clarify any complex physiological processes. Emphasize the practical implications of understanding these hormones in animal husbandry.