Extension Mimeo AS, no. 325 (Jan. 1965) |
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Pigs to Pork Cooperative Extension Service PURDUE UNIVERSITY Lafayette, Indiana Environmental Influences on Swine Production C.J. Heidenreich, Animal Sciences Department -Principles AS-325 January, 1965 This publication is designed as a teaching aid for the intensive swine schools conducted by the Cooperative Extension Service. It is also included in the Pork Production Handbook for County Extension Agents. It is intended to offer a more thorough understanding of the environmental influences on swine production. Summary The animal is a complex organism with considerable "built-in" capacity to adjust to a dynamic environment. The environment, in like manner, is complex and continually changing, thereby imposing situations demanding constant adjustment. The precise balance or relation existing between the animal and his natural environment is evidenced by his continued survival. An understanding of the physiological mechanisms involved in the animal and the inherent complexities of the environment is prerequisite to successful swine husbandry. Any decision concerning the degree of management to be imposed, in anticipation of increased economic returns, must be based on a fundamental knowledge of the animal as well as the environment. The Environment Swine productivity is affected by both genetic and environmental factors. It has been said that genetics determines what an animal's potential is, whereas environment determines the extent to which he expresses his potential. In a sense, environment can be expanded to include all those factors which are external to the animal himself. These factors then can be classified into two categories with several subclasses in each. I Biotic Nutritional Disease Social II Physical Heat (7, 900-500, 000 Angstrom units (A), includes infra-red) Light (3,900 to 7,700 A) Radiation (for example, ultra violet, less than 3, 900 A) Atmospheric pressure Water vapor and other gases Air movement Biotic factors are those originating with living organisms such as nutritional
Object Description
Title | Extension Mimeo AS, no. 325 (Jan. 1965) |
Purdue Identification Number | UA-14-13-mimeoas325 |
Title of Issue | Environmental Influences on Swine Production - Principles |
Author of Issue | Heidenreich, C. J. |
Date of Original | 1965 |
Publisher | Purdue University. Cooperative Extension Service |
Subjects (LCSH) |
Swine Swine industry--Environmental aspects |
Genre | Periodical |
Collection Title | Extension Mimeo AS (Purdue University. Agricultural Extension Service) |
Rights Statement | Copyright Purdue University. All rights reserved. |
Coverage | United States - Indiana |
Type | text |
Format | JP2 |
Language | Eng |
Repository | Purdue University Libraries |
Date Digitized | 06/10/2015 |
Digitization Information | Original scanned at 400 ppi on a BookEye 3 scanner using Opus software. Display images generated in Contentdm as JP2000s; file format for archival copy is uncompressed TIF format. |
URI | UA-14-13-mimeoas325.tif |
Description
Title | Extension Mimeo AS, no. 325 (Jan. 1965) |
Purdue Identification Number | UA-14-13-mimeoas325 |
Title of Issue | Environmental Influences on Swine Production - Principles |
Author of Issue | Heidenreich, C. J. |
Date of Original | 1965 |
Publisher | Purdue University. Cooperative Extension Service |
Subjects (LCSH) |
Swine Swine industry--Environmental aspects |
Genre | Periodical |
Collection Title | Extension Mimeo AS (Purdue University. Agricultural Extension Service) |
Rights Statement | Copyright Purdue University. All rights reserved. |
Coverage | United States - Indiana |
Type | text |
Format | JP2 |
Language | Eng |
Transcript | Pigs to Pork Cooperative Extension Service PURDUE UNIVERSITY Lafayette, Indiana Environmental Influences on Swine Production C.J. Heidenreich, Animal Sciences Department -Principles AS-325 January, 1965 This publication is designed as a teaching aid for the intensive swine schools conducted by the Cooperative Extension Service. It is also included in the Pork Production Handbook for County Extension Agents. It is intended to offer a more thorough understanding of the environmental influences on swine production. Summary The animal is a complex organism with considerable "built-in" capacity to adjust to a dynamic environment. The environment, in like manner, is complex and continually changing, thereby imposing situations demanding constant adjustment. The precise balance or relation existing between the animal and his natural environment is evidenced by his continued survival. An understanding of the physiological mechanisms involved in the animal and the inherent complexities of the environment is prerequisite to successful swine husbandry. Any decision concerning the degree of management to be imposed, in anticipation of increased economic returns, must be based on a fundamental knowledge of the animal as well as the environment. The Environment Swine productivity is affected by both genetic and environmental factors. It has been said that genetics determines what an animal's potential is, whereas environment determines the extent to which he expresses his potential. In a sense, environment can be expanded to include all those factors which are external to the animal himself. These factors then can be classified into two categories with several subclasses in each. I Biotic Nutritional Disease Social II Physical Heat (7, 900-500, 000 Angstrom units (A), includes infra-red) Light (3,900 to 7,700 A) Radiation (for example, ultra violet, less than 3, 900 A) Atmospheric pressure Water vapor and other gases Air movement Biotic factors are those originating with living organisms such as nutritional |
Repository | Purdue University Libraries |
Date Digitized | 06/10/2015 |
Digitization Information | Original scanned at 400 ppi on a BookEye 3 scanner using Opus software. Display images generated in Contentdm as JP2000s; file format for archival copy is uncompressed TIF format. |
URI | UA-14-13-mimeoas325.tif |
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