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Photo credit: Andrew Sandeen
Risk Management for Reproduction Programs - Articles Articles
Risk management must address big-picture financial aspects; however, it is also relevant to specific areas of management, such as reproduction. More
Photo by David Almquist on Bugguide.org, used with permission.
Camphor Shoot Borer (Cnestus mutilatus) - Articles Articles
Camphor shoot borers are an introduced species of ambrosia beetle that attack small-diameter branches and trunks of stressed, weakened, and dying trees. They also accidentally bore holes into plastic gasoline containers, hoses, and tanks. More
Insects on Real Christmas Trees
Insects on Real Christmas Trees - Articles Articles

Insects on Real Christmas Trees

Michael J. Skvarla

Most real Christmas trees are free of insects and other arthropods. However, it is possible that some trees may harbor one or more species. More
Photo from pixabay.com. CC0
The Fat in Different Dairy Products - Articles Articles
Learn about the impact milk fat has on human health and how it differs between various dairy products. More
Asian longhorned ticks are can be found on deer and other wildlife, as well as livestock and companion animals.
Asian Longhorned Tick, Haemaphysalis longicornis - Articles Articles

Asian Longhorned Tick, Haemaphysalis longicornis

Erika Machtinger, Michael J. Skvarla

The Asian Longhorned tick is a recent invasive tick to Pennsylvania. This tick can be found on wildlife and on livestock. It is important to be aware of the presence of this tick and to implement prevention and control measures when necessary. More
Sclerodermus Latreille
Sclerodermus Latreille - Articles Articles

Sclerodermus Latreille

Michael J. Skvarla

Sclerodermus are small wasps that can become pestiferous and sting people when they attack wood-boring beetle larvae that have infested wooden structures and furniture. More
Magnolia Leaf-Footed Bug
Magnolia Leaf-Footed Bug - Articles Articles

Magnolia Leaf-Footed Bug

Michael J. Skvarla

Magnolia leaf-footed bugs are brown bugs occasionally found on magnolia. They do not pose a risk to human health and do not cause damage to or reduce the vigor of infested trees, but may be nuisance pests. More
Jalysus wickhami. Photo © John Rosenfeld
Spined Stilt Bug - Articles Articles

Spined Stilt Bug

Michael J. Skvarla

Spined stilt bugs are an occasional pest of greenhouse tomatoes that can cause flower and fruit abortion and unsightly feeding damage in mature fruits. More
Yellowmargined leaf beetle (YMLB) adult. Photo: Michael Skvarla, Penn State
Yellowmargined Leaf Beetle Serious Pest in Pennsylvania - Articles Articles

Yellowmargined Leaf Beetle Serious Pest in Pennsylvania

Michael J. Skvarla, Shelby Fleischer, Ph.D.

Yellowmargined leaf beetle (YMLB) (Microtheca ochroloma) is a serious pest of cruciferous crops. More
Why Cows Don't Get Pregnant
Why Cows Don't Get Pregnant - Articles Articles

Why Cows Don't Get Pregnant

Andrew Sandeen

Dairy cows don't always conceive after the first insemination attempt. There are a variety of causes that may contribute to conception failure. More
Michael Skvarla, director of the Insect Identification Lab in Penn State's College of Agricultural Sciences, holds a walking stick. Photo by Amy Duke
Penn State Department of Entomology Offers Insect Identification Services - News News
Director of the Insect Identification Lab in Penn State's College of Agricultural Sciences knows his bugs More
Photo credit: Andrew Sandeen
More Progesterone, Please - Articles Articles

More Progesterone, Please

Andrew Sandeen

Progesterone is essential for normal reproductive cycling; it inhibits estrus and controls follicle growth. But, some high-producing dairy cows have too little in circulation. More
Photo: T. Baugher, Penn State
A Brief Guide to Hand Lenses - Articles Articles

A Brief Guide to Hand Lenses

Michael J. Skvarla

Arthropods, including plant pests and biocontrol agents, are often difficult to identify with the naked eye. More
Characteristics of the Bovine Estrous Cycle
Characteristics of the Bovine Estrous Cycle - Videos Videos
This video introduces some of the key characteristics of the estrous cycle in cattle. More
Brown marmorated stink bug
Brown Marmorated Stink Bug - Articles Articles

Brown Marmorated Stink Bug

Michael J. Skvarla

The brown marmorated stink bug (BMSB) was first collected in September of 1998 in Allentown, but probably arrived several years earlier. More
Photo credit: Andrew Sandeen
Is 60 the Magic Number? - Articles Articles

Is 60 the Magic Number?

Andrew Sandeen

Factors to consider before shifting voluntary waiting period or dry period length. More
Minimizing Interservice Intervals
Minimizing Interservice Intervals - Videos Videos

Minimizing Interservice Intervals

Andrew Sandeen

9:45

This video defines interservice intervals and provides suggestions for how to improve them to maximize reproductive efficiency and dairy herd profitability. More
Predicting Pregnancy Loss
Predicting Pregnancy Loss - Articles Articles

Predicting Pregnancy Loss

Andrew Sandeen

Diagnosing pregnancy early identifies open cows and can help minimize days open and increase profitability, but losing confirmed pregnancies can be very frustrating. More
Food is a central part of life in every culture. And eating with others is meaningful. The foods may be different, such as this ugali (corn porridge) and dried fish from Tanzania, but the significance of eating together isn’t.
Making the Most of Cross-Cultural Encounters - Articles Articles
Understanding differences between cultures can provide helpful insight for situations encountered everywhere in our increasingly global society, including common encounters on U.S. farms. More
Dealing with the Stubborn Corpus Luteum (CL) During a Timed AI Program
Dealing with the Stubborn Corpus Luteum (CL) During a Timed AI Program - Articles Articles
Some of the latest, greatest timed artificial insemination (AI) protocols have become pretty complex, but not without valid reasons. More
Cyclicity in Dairy Cows: Postpartum Blues
Cyclicity in Dairy Cows: Postpartum Blues - Articles Articles
Ovulation is the critical event that must function correctly and be responded to in a timely manner in to establish a new pregnancy. More
Cyclicity in Dairy Cows: Defining the Issue
Cyclicity in Dairy Cows: Defining the Issue - Articles Articles
Open cows that aren't cycling normally can hamper successful reproduction. More
A Long-Term Mindset for Reproductive Management
A Long-Term Mindset for Reproductive Management - Articles Articles
As we look at reproductive management and its impact on overall success of a dairy operation, it is clearly a critical component. More
Use of Activity Monitors to Predict Ovulation and Get Cows Pregnant
Use of Activity Monitors to Predict Ovulation and Get Cows Pregnant - Articles Articles
Activity monitors may consistently predict ovulation and pinpoint the perfect time to breed cows. More
Scott Bauer, USDA Agricultural Research Service, Bugwood.org
Trouble-shooting Infertility Problems in Cattle - Articles Articles
This article examines problem areas related to anestrus, repeat breeding, pregnancy loss, and postpartum disorders. More