Methods Of Animal Improvement
Bayani Gaba-gaba
A herder near Sokoto wants calves that grow faster without losing the White Fulani's famous heat tolerance. A poultry keeper in Ibadan wants birds that lay like an exotic hybrid but survive a Nigerian backyard on local feed. Neither farmer can wish a better animal into existence. What they can do is choose who mates with whom, generation after generation, and that single choice is the whole of animal improvement.
In this lesson you will meet the four methods examiners expect you to know inside out: selection, crossbreeding, inbreeding and outbreeding. You will learn what each one does to a herd's genes, work through realistic farm scenarios that decide which method fits which goal, and master the advantage and disadvantage of each, the exact comparison WAEC sets almost every year.
Manufura
- State the methods of animal improvement
- Explain selection as a method of animal improvement
- Explain crossbreeding as a method of animal improvement
- Distinguish between inbreeding and outbreeding
- Explain the advantages and disadvantages of each method of animal improvement
Takardar Darasi
Yi Rijista don Ci Gaba
Ƙirƙiri asusu kyauta don samun damar duk kayan koyo, tambayoyin atisaye, da kuma bibiyar ci gaban ka.
Nazarin Darasi
Barka da kammala darasi akan Methods Of Animal Improvement. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which method of animal improvement combines animals of two different breeds to produce offspring that may outperform both parent breeds? A. Selection B. Crossbreeding C. Inbreeding D. Outbreeding Answer: B
- Mating a sire to his own daughter is an example of: A. Crossbreeding B. Outbreeding C. Inbreeding D. Selection Answer: C
- The improved performance often shown by the first-cross offspring of two different breeds is called: A. Inbreeding depression B. Hybrid vigour C. Genotype drift D. Betterment Answer: B
- A herd that has been mated among close relatives for several generations begins to show smaller litter sizes and weaker offspring. This is best described as: A. Hybrid vigour B. Inbreeding depression C. Heterosis D. Selection response Answer: B
- Which method of animal improvement chooses the best-performing animals within a single breed as parents of the next generation? A. Crossbreeding B. Outbreeding C. Selection D. Hybridisation Answer: C
Yi Rijista don Ci Gaba
Ƙirƙiri asusu kyauta don samun damar duk kayan koyo, tambayoyin atisaye, da kuma bibiyar ci gaban ka.
Yi Rijista don Ci Gaba
Ƙirƙiri asusu kyauta don samun damar duk kayan koyo, tambayoyin atisaye, da kuma bibiyar ci gaban ka.
Littattafan da ake ba da shawarar karantawa
Tambayoyin Da Suka Wuce
Kana ka na mamaki yadda tambayoyin baya na wannan batu suke? Ga wasu tambayoyi da suka shafi Methods Of Animal Improvement daga shekarun baya.
Tambaya 1 Rahoto
(a) Explain each of the following terms as used in the slaughtering of farm animals:
(i) scalding
(ii) singeing:
(iii) evisceration.
(b) Name four agents involved in the marketing of farm animals and animal products
(c) State five marketing functions that could be performed to facilitate the sale of chicken and eggs.
(d) Name three stages in the life cycle of a roundworm.
(e) Mention two methods of animal improvement.
Yi Rijista don Ci Gaba
Ƙirƙiri asusu kyauta don samun damar duk kayan koyo, tambayoyin atisaye, da kuma bibiyar ci gaban ka.