Environmental Physiology of Domestic Animals---Spring 2025
(send questions/comments to rod@rodallrich.com)
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Course Material
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Required Textbook:
Environmental Physiology of Livestock (by Collier and Collier)
Go to the Purdue Libraries and download the free pdf copy of this textbook.
Other Reading Material (always listed here, not in BS):
*****Newest reading material always added to top of the below list*****
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4/17/2025
Carbon Monoxide kills a family of 5 in Ohio (April 15, 2025)
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Material for the week of April 21st
Chapter 13 in our textbook
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Material for the week of April 14th
Cohorts
Intrauterine position effects-1
Intrauterine position effects-2
Freemartin heifers
Twins
And Chapter 13 in our textbook (first 4 pages)
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4/1/2025
Another case of CO death for American tourist off shores
Son of Yankees hero Brett Gardner
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3/29/2025
Material for the weeks of March 31st and April 7th (2 weeks)
Pheromones
Pheromones
Vomeronasal Organ
Flehmen Response
Bruce Effect
Coolidge Effect
Lee-Boot Effect
Vandenbergh Effect
Whitten Effect
The Boar Effect
Hog Mate
Bull Exposure-1
Bull Exposure-2
Ram Exposure
Dog Appeasing Pheromone
Calming Pheromones (PPT)
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3/27/2025
We have been following this case for about a month now.
We know they died in a room in a resort in Belize.
But we didn't jump to conclusions as far as "cause of death" was concerned.
Suspects were: drug overdose, foul-play (even if no blunt force trauma present) and CO toxicosis.
We now have the "cause of death"----CO toxicosis
Cause of death revealed for 3 American tourists found dead in Belize
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Material for the week of March 24th
Altitude
Effects of high altitude on humans
EPO
High Mountain Disease in Cattle
Brisket Disease
High Altitude Bull Sale-See the PAP Testing Link
PAP testing-video
PAP Testing in Cattle-video
Brisket Disease in Cattle
Altitude graph
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Stray Voltage in Chicago (3/7/2025)
Chicago
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Our topic for the week of March 10th
Environmental Hormones
Endocrine Disrupting Chemicals
Review Androgens
Review Corticoids
Review Estrogens
Review Progestins
Review Thyroid Hormones
Actions-1
Actions-2
Actions-3
Actions-4
Video on Environmental Estrogens
Zearalenone
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3/3/2025
Optional reading about CO for those hungry for details:
Carbon Monoxide Poisoning
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2/23/2025
Here is some optional reading on topics we encountered in class this past week:
AVMA Guidelines for the Euthanasia of Animals
Blood Brain Barrier (video)
Activated Charcoal (video)
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2/18/2025
Yesterday in class we spent most of our time on pentobarbital and phenobarbital.
You may ask why I include these two compounds on the list of poisons that may affect our animals.
Read below:
https://www.ovrs.com/blog/dog-food/
https://www.drernieward.com/blog/2018/2/17/video-blog-how-did-a-euthanasia-drug-get-into-pet-foods
I include phenobarbital on the list because it is often confused with pentobarbital.
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2/15/2025
Early this semester I mentioned that I thought Indianapolis had passed laws pertaining to
animal care and treatment. I have found a website that lists the main highlights of those laws:
Friends of Indianapolis Dogs Outside (FIDO)
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2/5/2025
Environmental Toxicants and Toxins (a sampling of the 100's that exist)
Sweet Clover Poisoning
More Sweet Clover Poisoning
Dead cattle lead to the discovery of Warfarin
Toxic pet food kills dozens of dogs-aflatoxin
Dogs keep dying-aflatoxin
More dogs are dying-aflatoxin
Melamine and dead dogs
Melamine Update
Mare Reproductive Loss Syndrome
Blister Beetles Kill Horses
Blister Beetle Poisoning
Above this line is Quiz #4
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Pentobarbital-1
Pentobarbital-2
Phenobarbital-1
Phenobarbital-2
Watch this video-1
Watch this video-2
Stray Voltage-1
Stray Voltage-2
Stray Voltage-3
Stray Voltage-4
Antifreeze Poisoning in Dogs
Ethylene Glycol Poisoning
Chocolate Poisoning in Dogs
Above this line is Quiz #5
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Organophosphates-1
Organophosphates-2
Organophosphates-3
Organophosphates-4
Malathion (PPT)
Lead Toxicosis-1
Lead Toxicosis-2
Lead Toxicosis-3
Grape and raisin toxicity in dogs
Teratogens-3
Teratogens-4
Teratogens-5
Teratogens-6
Teratogens-8
Teratogens-9
Teratogens-10
Teratogens-11
Above this line is Quiz #6
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Palytoxin
Xylitol-1
Xylitol-2
Xylitol-3
Gums that contain xylitol:
Orbit
Trident
Stride
Nicorette
Peanut Butter that contains xylitol:
Go Nuts Co.
Nuts 'N More
P28 Foods
Krush Nutrition
Persin-1
Persin-2
Macadamia Nuts
Yeast Dough
Rodenticides
DES also harms the third generation
Hormone Implants
Local Hormone Delivery
Estradiol benzoate
Above this line is Quiz #7
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1/30/2025
Gas Table from lecture on 2/5
Gases
Carbon monoxide #1
Carbon monoxide #2
Carbon monoxide #3
CO deaths
More CO deaths
And more CO deaths
2 more CO deaths
Savannah's Law now in Effect
3 More CO deaths
4 More CO deaths
Hotels and CO
CO Detectors-A video
Silo Gas
More Silo Gas
And more silo gas
Another silo death
Grain Bin Entrapment
Manure Pit Gases
Deaths from Manure Pit gases
Radon
Radon test kit
Phosphine Gas-1
Phosphine Gas-2
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1/26/2025
Comments about Quizzes
** Q1 has now been graded and scores posted in BS.
** I encourage you to take picture of quiz before you hand it in.
** Quizzes will be given every Wednesday.
** If possible, avoid the use of acronyms as answers.
** Partial credit is always possible.
** Quizzes use the 80/20 rule.
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1/24/2025
View these required videos and read in our textbook before next week's quiz:
Video2
Video3
Video4
Video5--Beef Cattle
Read Chapter 15 in our textbook
(don't get bogged down in the fine details of the chapter)
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As promised, Practice Quiz #1 (to help prepare for this Wednesday's quiz)
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Assignment for the week of January 13th
Read Chapter 2 in our textbook and view this video:
Heat Transfer Mechanisms
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Syllabus
Learning Objectives Using active and self-directed learning techniques, empower students to learn and
apply principles of environmental physiology over a lifetime to benefit themselves and their animals.
Learning Coach Coach Rod rallrich@purdue.edu rod@rodallrich.com
Course Topics Thermoregulation Homeostasis Behavior Cohorts Photoperiod Reproduction Parasites
Gases Role of Genotype Altitude Sensory Systems Water Balance Phytotoxins
Metabolism Hyperbaric Chambers Pheromones Nutrition Heat Transfer Mechanisms Telemetry
Environmental Hormones Buildings Transportation Environmental Enrichment Equipment
Course Website www.rodallrich.com Web links lead to required course material
Redundant website: rodallrich2.com Brightspace will contain points earned. and misc. material
Assessments On each Wednesday during the semester, we will have an assessment during the
last 15 minutes of lecture that will be worth 50 points each. We will have 12 of
these assessments (A1-A12) and count the best 10 scores for the course grade.
Suggested Homework Go to “Quizzes/Crossword Puzzles” link at rodallrich.com
Course Grade There are 500 total points possible for the semester.
We will use the plus minus grading system as outlined below:
A plus (4.0) 97.0-100.0 % A (4.0) 93.0-96.9 % A minus (3.7) 90.0-92.9 %
B plus (3.3) 87.0-89.9 % B (3.0) 83.0-86.9 % B minus (2.7) 80.0-82.9 %
C plus (2.3) 77.0-79.9 % C (2.0) 73.0-76.9 % C minus (1.7) 70.0-72.9 %
D plus (1.3) 67.0-69.9 % D (1.0) 63.0-66.9 % D minus (0.7) 60.0-62.9 %
F (0.0) < 60.0 %
Bad Weather Policy: In the event that Purdue cancels classes,
Rod will send an email to students describing how the schedule of course events is affected by the cancellation.
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The End