{"id":2437,"date":"2023-10-03T06:41:22","date_gmt":"2023-10-03T06:41:22","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=2437"},"modified":"2023-10-03T06:43:28","modified_gmt":"2023-10-03T06:43:28","slug":"week-7-ss1-third-term-agricultural-science-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-7-ss1-third-term-agricultural-science-notes\/","title":{"rendered":"Week 7 &#8211; SS1 Third Term Agricultural Science Notes"},"content":{"rendered":"<p>\u00a0<br \/>\n\u00a0<strong>WEEK SEVEN<br \/>\n<\/strong><strong>REPRODUCTION IN FARM ANIMALS II<br \/>\n<\/strong><strong>CONTENT\u00a0\u00a0\u00a0\u00a0<br \/>\n<\/strong><\/p>\n<ul>\n<li>\n<div>Processes of egg formation in poultry\n<\/div>\n<\/li>\n<li>\n<div>Male and female reproductive hormones\n<\/div>\n<\/li>\n<\/ul>\n<p>\u00a0<strong>PROCESSES OF EGG FORMATION IN POULTRY<br \/>\n<\/strong>The egg in poultry is partly formed in the ovary and in the oviduct. At ovulation the ovum carrying the yolk is released by the <strong>ovary<\/strong> into the <strong>oviduct<\/strong> through the funnel called infundibulum. Fertilization takes place in the<strong> infundibulum <\/strong>where the egg spends 15 minutes and moves into the magnum. In the <strong>magnum<\/strong>, part of the egg white (albumen) and the chalaza are secreted round the yolk. The egg stays for 3 hours in the magnum and moves into the<strong> isthmus<\/strong> where the two shell membranes are formed. The egg stays for 1 hour 15 minutes in the isthmus and moves into the <strong>uterus<\/strong> where it remains for 18 \u2013 21 hours and the egg shell is formed from calcium carbonate. Mineral solutions are also added to the egg before it moves into the<strong> vagina <\/strong>whereit remains for 1 \u2013 15 minutes before it is laid through the<strong> cloaca<\/strong>. A complete formation of eggs takes almost 26 hours.<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th1.png\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th2.jpg\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th3.jpg\" alt=\"\"\/><br \/>\n\t<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th4.jpg\" alt=\"\"\/><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th5.jpg\" alt=\"\"\/><\/p>\n<p>\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th6.png\" alt=\"\"\/><\/p>\n<p>\u00a0<br \/>\n\u00a0<img decoding=\"async\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100323_0641_Week7SS1Th7.jpg\" alt=\"\"\/><strong><br \/>\n\t\t<\/strong>REPRODUCTIVE SYSTEM OF POULTRY BIRDS<br \/>\n<strong>EVALUATION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Describe the processes of egg formation in poultry.<strong><br \/>\n\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>Describe the reproductive system of poultry birds.<strong><br \/>\n\t\t\t\t<\/strong><\/div>\n<\/li>\n<\/ol>\n<p>\u00a0<strong>MALE AND FEMALE REPRODUCTIVE HORMONES<br \/>\n<\/strong>Hormones are organic chemical substances produced by endocrine (ductless) glands which<br \/>\ninfluence growth, development and metabolic activities in farm animals. These include<\/p>\n<p>\u00a0<\/p>\n<div>\n<table>\n<tbody>\n<tr>\n<td>HORMONE<\/td>\n<td>SEX<\/td>\n<td>SITE OF SECRETION<\/td>\n<td>FUNCTIONS<\/td>\n<\/tr>\n<tr>\n<td>Testosterone\/ Androgen<\/td>\n<td>Male<\/td>\n<td>Testes<\/td>\n<td>It stimulates the development of secondary sexual characters in male.<br \/>\nIt stimulates sperm production through spermatogenesis.<\/td>\n<\/tr>\n<tr>\n<td>Oestrogen<\/td>\n<td>Female<\/td>\n<td>Ovary<\/td>\n<td>It stimulates the development of secondary sexual characteristics in female animals<br \/>\nIt promotes the production of ova or eggs through oogenesis.<br \/>\nIt stimulates mammary gland development<\/td>\n<\/tr>\n<tr>\n<td>Progesterone<\/td>\n<td>Female<\/td>\n<td>Corpus luteum<\/td>\n<td>It ensures uterus development and implantation of the fertilized ovum.<br \/>\nIt inhibits oestrus i. e. prevents ovulation.<br \/>\nIt stimulates the development of mammary gland<br \/>\nIt ensures the continuance of pregnancy.<\/td>\n<\/tr>\n<tr>\n<td>Oxytocin<\/td>\n<td>Female<\/td>\n<td>Pituitary<\/td>\n<td>It aids the contraction of the uterine wall during parturition.<br \/>\nIt promotes milk let-down after parturition.<br \/>\nIt aids sperm transportation in the vagina.<\/td>\n<\/tr>\n<tr>\n<td>Relaxin<\/td>\n<td>Female<\/td>\n<td>Pituitary<\/td>\n<td>It aids relaxation of pelvic ligaments during parturition.<\/td>\n<\/tr>\n<tr>\n<td>Follicle stimulating hormone (FSH)<\/td>\n<td>Female<\/td>\n<td>Pituitary<\/td>\n<td>It stimulates the growth of ovarian follicle.\n<\/td>\n<\/tr>\n<tr>\n<td>Luteinizing hormone<\/td>\n<td>Female<\/td>\n<td>Pituitary<\/td>\n<td>It stimulates the secretion of oestrogen and progesterone.<br \/>\nIt causes the rupture of the follicle and the release of the ova from the follicle.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u00a0<strong>GENERAL EVALUATION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>List five animal hormones and function.<strong><br \/>\n\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>What are the functions of the following in the processes of egg formation in poultry?\n<\/div>\n<ol>\n<li>\n<div>Ovary\n<\/div>\n<\/li>\n<li>\n<div>Oviduct\n<\/div>\n<\/li>\n<li>\n<div>Magnum\n<\/div>\n<\/li>\n<li>\n<div>uterus\n<\/div>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p>\u00a0<strong>READING ASSIGNMENT<\/strong><\/p>\n<ul>\n<li>\n<div>Essential Agricultural Science for Senior Secondary Schools by O.A. Iwena chapter 30 page 288 \u2013 290.\n<\/div>\n<\/li>\n<li>\n<div>Answer the following questions from WAEC PAQ 2015 theory question 4a\n<\/div>\n<\/li>\n<\/ul>\n<p>\u00a0<br \/>\n\u00a0<strong>WEEKEND ASSIGNMENT<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Which of these is not a part of the male reproductive system A. uterus masculinusB. oviduct C. testes D. vas deferens\n<\/div>\n<\/li>\n<li>\n<div>The following except one are female reproductive hormones A.oestrogenB. progesterone C. testosterone D. oxytocin\n<\/div>\n<\/li>\n<li>\n<div>Fertilization in poultry birds takes place in the A. infundibulum B. isthmus C.magnumD. uterus\n<\/div>\n<\/li>\n<li>\n<div>The following except one are viviparous animals A. pig B. cattle C. turkey D. goat\n<\/div>\n<\/li>\n<li>\n<div>The hormone responsible for the contraction of the uterine wall during parturition is known as A. oxytocin B. progesterone C. luteinizing hormone D.relaxin\n<\/div>\n<\/li>\n<\/ol>\n<p>\u00a0<strong>THEORY<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Draw and label the diagram of an egg.\n<\/div>\n<\/li>\n<li>\n<div>List five reproductive hormones, site of secretion and their functions.\n<\/div>\n<\/li>\n<\/ol>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 \u00a0WEEK SEVEN REPRODUCTION IN FARM ANIMALS II CONTENT\u00a0\u00a0\u00a0\u00a0 Processes of egg formation in poultry&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,206],"tags":[],"class_list":["post-2437","post","type-post","status-publish","format-standard","hentry","category-posts","category-third-term-ss1-agricultural-science"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=2437"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2437\/revisions"}],"predecessor-version":[{"id":2438,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2437\/revisions\/2438"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=2437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=2437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=2437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}