This is the period during which the female animal releases milk from its udder immediately after parturition and thereafter. The milk is used to feed the young ones. It is under the control of hormone, i.e, decrease in progesterone and an increase in oestrogen and oxytocin. Lactation or milk let-down can be increased, or if…
PROCESS OF EGG FORMATION IN POULTRY
The process of egg formation is controlled by hormones. The egg is formed partly in the ovary and partly in the oviduct. Ovary: The yolk is secreted by the ovary and enclosed in a follicle. The yolk increases in size by accumulating yolk materials carried from different parts of the body by blood stream. The…
OESTRUS CYCLE, MATING, GESTATION PERIOD, OVULATION, PARTURITION AND FERTILIZATION IN FARM ANIMALS
OESTRUS CYCLE Oestrus cycle is the interval from the end of one heat period to the beginning of another. It is also the period of “heat” or “oestrus” for coitus or mating. It is followed by a long period in which female animals will not show desire to mate. It is under the influence of…
MEANING OF ANIMAL REPRODUCTION
Reproduction is the ability in animal to give birth to young ones. The purpose of reproduction is to ensure continuity of life. The reproductive system includes all the organs and tissues concerned with reproduction in animals. Farm animals reproduce sexually and are mostly viviparous because they. bear their young ones alive. Poultry birds on the…
COMMON WEEDS FOUND ON FARMS
Common weeds found on farms including their common names and botanical names are shown below: Guinea grass (Panicum maximum). Bahama grass (Cynodon dactylon). Carpet grass (Axonopus compressus). Sensitive plant (Mimosa pundica). Spear grass (Imperiata cylindrica). Wire grass (Aspilia africana). Centro (Centrosema pubescens) Blue feather (Commelina nudiflora) Stubborn grass (Eleucine indica). Stubborn weed (Sida acuta). Goat…
INTRODUCTION TO CHEMISTRY
Chemistry may be defined as the science that is concerned with the composition and the structure of matter, and with the forces that hold the structures together. Chemistry as a science has, as its primary objectives, the determination of the nature and properties of the non-living matter, which surrounds us, and the preparation of new…
ETHICAL, LEGAL AND SOCIAL ISSUES IN CHEMISTRY
The study of chemistry has brought tremendous, positive development to the world and to Nigeria in particular. Chemistry has contributed greatly towards providing our basic needs and improving the quality of our life. For example, the provision of clothing, housing, better food and transportation is made possible through the knowledge of chemistry. However, there are…
MEANING OF WEEDS
Weed is any plant that grows in a place where it is not expected to grow or a plant which grows out of place. Weed can also be defined as a plant that grows where it is not desired in such a way that it constitutes nuisance either to man, livestock or crops. All farmers…
AGRICULTURAL EXTENSION OFFICER OR AGENT OR WORKER
An agricultural extension officer or worker is a person who is involved in the dissemination of new ideas and techniques from the research institutes to farmers. He acts as an intermediary between researchers and farmers. Qualities of a Good Extension Worker Originality: For an extension officer or worker to succeed as an agent of…
AGRICULTURAL EXTENSION PROGRAMMES IN NIGERIA
Agricultural extension programmes are the media or channels through which new ideas and techniques are disseminated to rural farmers. In other words, they are bodies or agencies which have extension service units that can teach and train extension workers on the job to improve their daily services so that they will be able to transfer…