heifer raising
Download
Skip this Video
Download Presentation
Heifer Raising

Loading in 2 Seconds...

play fullscreen
1 / 16

Heifer Raising - PowerPoint PPT Presentation


  • 80 Views
  • Uploaded on

Heifer Raising. Lecture 11 ANS 336 2/21/01. Once A Day Feeding - Milk. Reduces labor? Reduces scours Promotes faster rumen development When a calf drinks milk it forms a curd in the fourth stomach then takes approximately 3-4 hours to totally leave

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Heifer Raising' - abril


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
heifer raising

Heifer Raising

Lecture 11

ANS 336

2/21/01

once a day feeding milk
Once A Day Feeding - Milk
  • Reduces labor?
  • Reduces scours
  • Promotes faster rumen development
  • When a calf drinks milk it forms a curd in the fourth stomach then takes approximately 3-4 hours to totally leave
  • Milk replacer forms a harder curd and it takes 18 hours to leave the fourth stomach.
    • If fed twice daily - new milk is mixed with the previous curd
once a day
Once A Day
  • Acid content of the stomach is the main weapon against bacteria
  • If pH is > than 4.2 bacteria such as E.Coli will survive and grow. Below 4.2 the bacteria is physically killed.
  • Normal pH of the fourth stomach is 2.
  • When milk is drank the pH rises to 6 and takes up to 3 hours to drop below 4.2.
  • Twice a day exposes the calf to high pH twice a day. E Coli thrives and is the major cause of calf deaths.
once a day1
Once A Day
  • To reduce cost of raising calves, we must convert from the high cost, high risk and labor intensive phase to an efficient ruminant.
  • Must eat dry matter as early as possible.
  • By condensing all the dry matter into one low volume feed – whole milk will not work.
  • Over a 10-14 day period of time the animal can be converted to getting 500 grams of milk replacer in 2 qts of water. Normal feedings require 200 grams.
  • The single low volume of feed is digested slowly but leaves the calf feeling hungry therefore starts on starter grain earlier.
once a day2
Once A Day
  • To raise a calf on whole milk or milk replacer cost about $ 4.00 per kg of gain.
  • Once weaned it cost about $.70/ kg of gain.
  • Milk feeding of calves does not assist rumen development.
  • Calves can be weaned at 30-35 days of age once consuming 1 lb of good calf starter.
  • However, starter should contain 20% Protein. Provide clean cereal straw which is low in nutrient content and poor taste to provide roughage.
  • Good tasting Alfalfa or pasture will encourage consumption which can not be utilized at this stage.
  • Requires excellent management.
nutrient terminology
Protein

CP includes NPN and True Protein

CP used as Ruminants utilization about the same.

N Content X 6.25 as not all the nitrogen is in the form of protein.

DP - digestible Protein

Amount consume minus the amount in feces.

AP - apparent digestibility

Part of the protein comes from the animal.

Energy

DE digestible energy

ME – Metabolizable energy

TDN

NEm – net energy Maintenance

Neg - Net energy gain

Nel - Net energy lactation

Nutrient Terminology
nutrient terminology changes nrc
Old - 1989

UIP – Undegradable Intake Protein

DIP – degradable intake Protein

MCP- Microbial Protein

BCP Bacterial Protein

New – 2000

RUP – Rumen Undegradable Protein

RDP – Rumen degradable Protein

MP – Metabolizable Protein

True protein absorbed from the intestine (MCP –RUP)

Nutrient Terminology Changes - NRC
slide16
Dry Matter Intake

DMI = BW (2%) + .33 FCM

FCM = (lbs of milk X .4) + (lbs of milk X % Bfat) 15

Maximum Ration NDF = 1.2% of BW

Forage NDF = 0.9 % of BW

Conc. NDF = 0.3 % BW

Must provide: 28 to 30 % of the Total Ration in NDF

19 to 21 % of the Total Ration in ADF

ad