New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here


by: Reagan Okuneva


Marketplace > Texas A&M University > Animal Science > ANSC 108 > GENERAL ANIMAL SCIENCE
Reagan Okuneva
Texas A&M
GPA 3.77

Chris Skaggs

Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Chris Skaggs
Class Notes
25 ?




Popular in Course

Popular in Animal Science

This 5 page Class Notes was uploaded by Reagan Okuneva on Wednesday October 21, 2015. The Class Notes belongs to ANSC 108 at Texas A&M University taught by Chris Skaggs in Fall. Since its upload, it has received 19 views. For similar materials see /class/225818/ansc-108-texas-a-m-university in Animal Science at Texas A&M University.

Similar to ANSC 108 at Texas A&M




Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/21/15
SWINE MANAGEMENT Top Five Countries 1 China 2 EU 3 US 4 Brazil 5 Russia Top 5 States 1 Iowa 2 N Carolina 3 Minnesota 4 Illinois 5 Indiana Reasons Moved to TX Panhandle 1 Environmental soundness 2 Water 3 Feedstuffs 4 Remote location 5 Trainable workforce Types of operations 0 Farrowtofinish all stages from breeding to market select for maternal traits o Farrowing to Nursery Feeder pig marketed at 4060 lbs nursery 21 days minimize feed demands 0 Farrow to wean sell 1015 lb pigs at 21 days to NurserytoGrow o GrowerFinisher purchase 4060 lb feeder pigs and feed to market weight 0 NurseryGrowFinish purchase 1015 lb pigs and put in nursery on high protein diet before moved to finishing program 0 Seedstock producers provide for farrowtofinish and farrowtofeeder ops want genetic superiority reproductive performance growth performance and carcass composition Allin Allout higher level of management disinfect entire bam more efficient Crossbreeding 0 Hybrid VigorHeterosis o Rotational system 2 or 3 breeds rotated in crisscross market hogs and replacement gilts are produced Disadvantages include lower heterosis reduction in grth potential and carcass merit 0 Terminal system all offspring are marketed simple or complex replacement females must be purchased 0 Rotaterminal system 20 of herd uses rotational crossing of breeds excelling in maternal characteristics replacement gilts are produced Nutrition and feeding 0 Feed accounts for 6570 of costs 0 270 pounds in 180190 days 0 Soybean meal is the main source of protein Baby Pig Processing 1 Clip Needle teeth 2 Iron Shot 3 Dock Tail 4 Notch Ears 5 Castrate 6 Cut Navel cord Ear notching right ear is litter left ear is pig Reproductive traits underlines very important 6 teats side Age at puberty 58 months Estrous cycle 21 days 2 day estrus Gestation lengthl 14 days DAIRY CATTLE 86 lbsl gallon ofmilk Increase in milk production decrease in cow numbers Top states CA and WI Consumption trends 0 Decrease in high fat products 0 Increase in cheese 0 Increase in whole milk equivalents Dairy products rank 4111 in TX agriculture sales Reasons for moving from East to West 1 Humidity and climate 2 Land prices population 3 Government regulations 4 Change from traditional familytype ops to businesstype farms Top 2 Counties Erath and Deaf Smith Holstein large milk volume low milk solids Jersey most milk solids higher heathumidity tolerance Avg cow in the US produces twice the milk of her 1955 counterpart due to management nutrition and genetics EPDs st used in dairy cattle BST used to increase persistency of lactation Record milk production was 19 gallons per day Use AI because produces superior genetics dairy bulls are meanaggressive Negative energy balance Days 4560peak lactation 60 days dry Mastitis in ammation of udder number one money loser in dairy industry Five major traits 1 Frame 2 Dairy Character 3 Body Capacity 4 Udder most emphasis 5 Feet and Legs Calf hutch where dairy calves are tied at 13 days reduce disease spread and calfcalf contact Milk machine uses vacuum Herringbone Parlor Parallel Parlor Rotary Parlor newest BEEF CATTLE One steer produces 540 servings of beef Cowcalf production Stocker cheap gain Feedlot production high concentrate nishing Checkoff funding lhead each time sold goes to researchadvertisementmarketing TX is Number One in 0 Total cattle 14 mil 143 o Ranches l33000l63 0 Beef cows 55 mil166 o Cattle on feed 26 mil202 o Fed cattle marketed 62 mil256 o Feedlots over 5000 head 25 Global Production 1 India 2 Brazil 3 China 4 US 5 EU Top 5 US Beef cowcalf ops by number of cows Deseret Cattle amp Citrus Florida JR Simplot ID King Ranch Lykes Bros FL Parker Ranch HA 959P Purposes for Castration o More docile less restless Finer lean more marbling Finish in less time Can be mixed with females Inferior bulls can39t breed cows Purposes for Dehoming Look more uniform Less shedfeeding space Reduce bruises Sell for higher prices Reduces injuries to workers Implanting cattle steroids in ear 0 Increase weaning weight 510 0 Stockers gain 1015 more 0 Feeders gain 1015 more 810 more efficient VAC45 program to precondition cattle reduce health issues ease transition to feed Injection site in neck Frame score based on hip height gender and age Minimum scrotal circumference of 30 cm Adjustment for weaning weight weaning age of calf age of dam gender of calf Dystocia birth weight sex of calf pelVic size of cow maturity Estrous cycle 21 days estrus 18 hours Gestation Length 283 days REPRODUCTIVE PHYSIOLOGY Female Stages of Follicle Growth 1 Primary microscopic amp 1 layer of cells 2 Secondary microscopic and 2 layers of cells 3 TertiaryAntral antrum uidfllled caVity 4 Graafian Looks like blister 5 Corpus Hemorrhagicumblood body 6 Corpus Luteum prod progesterone maintain pregnancy 7 Corpus Albicans white body regression of CL OViduct Infundibulum Ampulla Isthmus fertilization occurs at AIJ Ampullaryisthmic junction Cervix thickwalled and inelastic l Annular rings ruminants 2 Corkscrew sow 3 Longitudinal folds mare Male Seminiferous Tubules l Sertoli cells nurture sperm cells 2 Leydig cells produce testosterone Temperature control 0 Sperm kept about 4 degrees C below body temp o Scrotum tunica dartis contract when cold 0 Cremaster pulls testes closer o Pampiniform plexus blood vessels that cool blood before entering testes Epididymus Caput Corpus Cauda 1 Transport sperm 2 Concentrate sperm 3 Store sperm 4 Maturation of sperm Accessory Glands l Vesicular nutrients and buffering in semen 2 Prostate cleanse urethra 3 BulbourethralCowper s Glands gel portion of semen GnRH controls release of F SH and LH from anterior pituitary FSH stimulates follicle growth estradiol prod sperm cell production LH stimulate ovulation formation of CL secretion of progesterone or testosterone OT milk letdown uterine contractions Estrogen sexual behavior during estrous secondary sex characteristics Progesterone quothormone of pregnancyquot released from CL Artificial Insemination Advantages 0 Genetic improvement 0 Disease control 0 Record Keeping o Eliminates need for bulls o More economical Disadvantages 0 Time for estrous detection 0 Percent of cows in estrus during breeding season 0 Trained personnel required 0 Overuse of inferior sires Methods Rectocervicalcattle Speculumsheep Cervicalswine Vaginocervicalmare bE Nf


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.