5. errors and accuracy
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The document defines different types of errors that can occur when taking measurements in an experiment: personal errors due to mistakes by the observer, systematic errors caused by defects in measurement instruments, and random errors from sudden changes in experimental conditions. It explains that the difference between the measured value and the actual value is called error, and discusses how to classify errors into personal, systematic, and random categories. Accuracy is defined as how close a measurement is to the true or standard value.
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Pig farming, pork farming, pig production or hog farming is the raising and breeding of domestic pigs as livestock, and is a branch of animal husbandry. Pigs are farmed principally for food (e.g. pork: bacon, ham, gammon) and skins.
Pigs are amenable to many different styles of farming: intensive commercial units, commercial free range enterprises, or extensive farming (being allowed to wander around a village, town or city, or tethered in a simple shelter or kept in a pen outside the owner's house). Historically, farm pigs were kept in small numbers and were closely associated with the residence of the owner, or in the same village or town.[1] They were valued as a source of meat and fat, and for their ability to convert inedible food into meat and manure, and were often fed household food waste when kept on a homestead.[2] Pigs have been farmed to dispose of municipal garbage on a large scale.[3]
All these forms of pig farm are in use today, though intensive farms are by far the most popular, due to their potential to raise a large amount of pigs in a very cost-efficient manner.[4] In developed nations, commercial farms house thousands of pigs in climate-controlled buildings.[5] Pigs are a popular form of livestock, with more than one billion pigs butchered each year worldwide, 100 million in the United States. The majority of pigs are used for human food, but also supply skin, fat and other materials for use in clothing, ingredients for processed foods,[6] cosmetics,[7] and medical use.[8]Pig farming has gained importance today. Pigs have inherited capacity to acclimatize with varying climatic conditions. Pigs cannot withstand high temperature climate.
Pigs are adjusted to varied rearing practices and consume different types of food (Omnivorous) to attain higher growth and meat production.
Pigs will attain 60-70kg body weight in 6-8months period.
Female pigs i.e., sows will come to heat at age of 8-9 months but avoid using male pigs (Boars) for breeding purpose until it attains one year of age.
Adult sows when bred during right time after attaining maturity will farrow 8-12 piglets in 112-118 days of gestation period (i.e., about 4 months of gestation). Feedefficiencyis to gain one Kg live weightfor every 2.75-3kg feed consumed (FCR: 1:2.75). There are many advantageous in pig rearing. Pork is available at a cheaper price with nutritious and highly palatable tasty meat of higher quality animal protein. Pig bones are used for producing bone meal and also used for purification of sugar in sugar industry.
The manure droppings and urine are good fertilizers which enhance the soil fertilityand improve grain production.
Pig hairs (Bristles) are used for making brushes and ropes, hooves are used for shirt button making and preparation of gum. Hence, pigs are called as multi utility domestic animals. Farmers can take up piggery farming and reduce their debt burden and improve their profits and livelihood.
AUTOSOMES , ALLOSOMES AND SEX RATIO IN HUMAN POPULATION
AUTOSOMES , ALLOSOMES AND SEX RATIO IN HUMAN POPULATIONNistarini College, Purulia (W.B) India
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This presentation offers a bird's eye view of autosomes and sex chromosomes. It also explores the different kinds of diseases of humans due to autosomal and sex-linked inherited traits. The sex determination of plants has been explained. The ratio of sex in the human population along with cause and consequences has been explained here.Animal husbandry: Purpose, scope and management,dairy animals, breeds and eco...
Animal husbandry: Purpose, scope and management,dairy animals, breeds and eco...tibhathakur77
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Discription about animal husbandry.
Energ and Energy Forms, Work, and Power | IGCSE Physics
Energ and Energy Forms, Work, and Power | IGCSE PhysicsBlessing Ndazie
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This extensive slide deck provides a detailed exploration of energy, work, and power for IGCSE Physics. It covers fundamental concepts such as the definition of work done, kinetic energy, potential energy, mechanical energy, conservation of energy, efficiency, and power. The presentation also includes energy transfer, renewable and non-renewable energy sources, calculation of work done, power output, and real-life applications of energy principles. Featuring illustrative diagrams, worked examples, and exam-style questions, this resource is ideal for IGCSE students, teachers, and independent learners preparing for exams.5. errors and accuracy
- 2. The difference between the measured value and the actual value is called Error. Error
- 3. In an experiment certain errors may arise due to experimenter, or to the instrument used or due to both. we divide these errors into three categories, named: 1. Personal Errors 2. Systematic Errors 3. Random Errors Errors and Accuracy
- 4. 1. Personal Error: An error comes into play because of faulty procedure adopted by the observer is called "PERSONAL ERROR". Personal error comes into existence due to making an error in reading a scale. It is due to faulty procedure adopted by the person making measurement. Errors and Accuracy
- 5. 1. Systematic Error: The type of error arises due to defect in the measuring device is known as "SYSTEMATIC ERROR" Generally it is called "ZERO ERROR". it may be positive or negative error. Systematic error can be removed by correcting measurement device. Errors and Accuracy
- 6. 1. Random Error The error produced due to sudden change in experimental conditions is called "RANDOM ERROR". Errors and Accuracy
- 7. The degree to which the result of a measurement, calculation, or specification conforms to the correct value or a standard is accuracy. Accuracy