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Full-Text Articles in Education
Ec97-275 Effect Of Lactation Length On Sow Reproductive Performance, Donald G. Levis
Ec97-275 Effect Of Lactation Length On Sow Reproductive Performance, Donald G. Levis
University of Nebraska-Lincoln Extension: Historical Materials
As lactation length decreases there is an increase in the weaning-to-estrus interval, a decrease in farrowing rate, a decrease in subsequent litter size and an increase in pigs weaned per sow per year. Because of herd-to-herd differences in the influence of lactation length on reproductive performance, each farm should conduct a preliminary study to evaluate the effect of the lactation length being considered before implementing the “new” weaning age of piglets.
G97-1324 Beef Cattle Implant Update, Dicky D. Griffin, Terry L. Mader
G97-1324 Beef Cattle Implant Update, Dicky D. Griffin, Terry L. Mader
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide discusses the mechanism of action and use strategies for growth promoting implants, including expected responses and cost analysis.
Introduction
Growth promoting implants have been used extensively in beef production for over 30 years. Significant changes in implants and implanting strategies have occurred. Prior to 1987, available implants were estrogenic agents which metabolically enhanced nutrient use to enhance growth. These products improved feed efficiency 5-10 percent and daily gains from 5-15 percent. In 1987, the androgenic (tissue building) agent, trenbolone acetate, was approved for use in growth promoting implants. This compound had an additive effect with existing estrogenic implants. …
Ec97-274 Management Of Replacement Gilts For Efficient Reproduction, Donald G. Levis
Ec97-274 Management Of Replacement Gilts For Efficient Reproduction, Donald G. Levis
University of Nebraska-Lincoln Extension: Historical Materials
Successfully introducing replacement gilts into the breeding herd is an important aspect of breeding herd efficiency. To attain herd efficiency, females must ovulate adequate numbers of viable ova, express estrus, show willingness to mate and conceive in a regular manner. If these qualities are properly developed, pregnancy rate and litter size will be maximized. A gilt development and management program needs to be designed for gilts from birth to farrowing their first litter.
Ec97-276 Management Strategies For Pen-Mating Female Pigs, Donald G. Levis
Ec97-276 Management Strategies For Pen-Mating Female Pigs, Donald G. Levis
University of Nebraska-Lincoln Extension: Historical Materials
The master control switch of a pork production enterprise is weaning day. Pork production managers have little or no control concerning when a weaned female will cycle or how long she will be in estrus after weaning. When females are pen-mated, the producer needs to use management procedures to prevent an excessive number of estrous females from expressing the standing response at the same time, try to manage estrous females so that they are bred at the proper time, try to manage boars so they maintain an adequate level of fertility, evaluate boars for level of sexual behavior before and …
Nf97-317 Managing Dairy Cows To Avoid Abomasal Displacement, Rick Grant
Nf97-317 Managing Dairy Cows To Avoid Abomasal Displacement, Rick Grant
University of Nebraska-Lincoln Extension: Historical Materials
This NebFact discusses feeding strategies to reduce the incidence of displaced abomasum in your dairy herd.
G97-1314 Medication Withdrawal In Beef Cattle, Dicky D. Griffin, Dale Grotelueschen
G97-1314 Medication Withdrawal In Beef Cattle, Dicky D. Griffin, Dale Grotelueschen
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide lists the current withdrawal times for medications used in beef cattle.
Using proper livestock medications is very important. Proper use not only ensures maximal benefits from the medication but minimizes the chances of an unwanted residue. The National Cattlemen's Beef Association has worked hard to develop a premiere quality assurance program. In conjunction with other national and state beef and veterinary associations, the Beef Quality Assurance program now extends to almost every state in the nation. As a result, the safety and quality of beef has never been better. The outstanding record includes having an extremely low rate …
G97-1320 Feeding To Maximize Milk Solids, Rick J. Grant
G97-1320 Feeding To Maximize Milk Solids, Rick J. Grant
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide describes feeding guidelines to increase production of solids-corrected milk.
Proper feeding management of the dairy herd can improve the economy of production and provide for a healthier cow. Feeding to increase production of milk with maximum levels of milk fat and protein is essential for achieving these benefits.
Milk solid components include fat, protein, lactose, and minerals. Normal values for milk fat range from 3.7 percent (Holstein) to 4.9 percent (Jersey); milk protein ranges from 3.1 percent (Holstein) to 3.8 percent (Jersey). Lactose is usually 4.6 to 4.8 percent for all breeds and minerals (ash) average .74 percent. …
G97-1325 What Management Practices Are High Producing Dairy Herds Using?, Jeffrey F. Keown
G97-1325 What Management Practices Are High Producing Dairy Herds Using?, Jeffrey F. Keown
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide outlines management practices used in high-producing dairy operations.
In 1996, a national dairy survey was undertaken by the National Health Monitoring System. This survey of management practices was sent to 2,500 herds in 20 states representing 83.1 percent of all dairy cows in the United States. The states included in the survey were California, Florida, Idaho, Illinois, Indiana, Kentucky, Michigan, Minnesota, Missouri, New Mexico, New York, Ohio, Oregon, Pennsylvania, Tennessee, Texas, Vermont, Washington and Wisconsin. The survey asked 13 questions ranging from computer use, ration balancing, BST use and veterinarian usage to various calf rearing procedures. The survey …
Mp68 1996-98 Dairy Report
University of Nebraska-Lincoln Extension: Historical Materials
Annual Report of University of Nebraska-Lincoln Dairy Research for 1997-1998. Topics include:
Time of Initiating Dietary Fat Supplementaion on Lactation and Reproduction
A Soyhull:Soy Lecithin Soapstock Mixture for Early Lactation Dairy Cows
Nonenzymatically Browned Soybeans for Dairy Cattle
Feather and Blood Meal Combination for Lactating Dairy Cows
Impact of Nonfiber Carbohydrate Concentration on Forage Fiber Digestion
Sulfite Liquor-Treated Meat and Bone Meal for Dairy Cows
The OTHER Causes of Infectious Diseases
Test Day Genetic Evaluations
Income and Herdlife
Maternal Genetic and Cytoplasmic Effects in Dairy Cattle
Financial and Management Survey of Nebraska Dairy Producers
Free-Stall Design and Maintenance
Horizontal Silos …