Andy Herring
- Courses1
- Reviews3
- School: Texas A&M University
- Campus: College Station
- Department: Animal Science
- Email address: Join to see
- Phone: Join to see
-
Location:
College Station, TX - Dates at Texas A&M University: January 2008 - April 2020
- Office Hours: Join to see
N/A
Would take again: Yes
For Credit: Yes
0
0
Not Mandatory
Awesome
Doctor Herring was one of the best professors I've ever had. I took his classes for ANSC 406 and last semester for ANSC 605. Both were among the best and most entertaining courses I've ever had. Also, he's very patient and understanding of conflicts between students. His classes are fun. The laboratory classes are fun and engaging as well. Overall, his courses are highly recommended.
Biography
Texas A&M University College Station - Animal Science
Experience
Texas A&M University
Associate Professor
I teach undergraduate and graduate courses in beef cattle production and conduct research related to the genetic influences and interactions associated with beef cattle production systems. I also work with producers and industry groups.
Texas A&M University
Professor
I teach undergraduate and graduate courses in beef cattle production and conduct research related to the genetic influences and interactions associated with beef cattle production systems. I also work with producers and industry groups.
Texas Tech University
Assistant and Associate Professor
I taught animal breeding and beef cattle production courses, trained graduate students, conducted research and supervised the university beef center.
Education
Texas A&M University
Doctor of Philosophy (Ph.D.)
Genetics
Texas A&M University
Master's Degree
Animal Breeding
Texas A&M University
Associate Professor
I teach undergraduate and graduate courses in beef cattle production and conduct research related to the genetic influences and interactions associated with beef cattle production systems. I also work with producers and industry groups.Texas A&M University
Professor
I teach undergraduate and graduate courses in beef cattle production and conduct research related to the genetic influences and interactions associated with beef cattle production systems. I also work with producers and industry groups.Talpa-Centennial High School
High School Diploma
Tarleton State University
Bachelor's Degree
Animal Science
Publications
North American Beef Production (Chapter 5)
CSIRO Publishing, MLA (Australia)
I authored Chapter 5 on North American beef production in the book Beef Production and Trade. This book covers global beef production considerations, but has heavy influence on the Australian industry and associated scenarios.
North American Beef Production (Chapter 5)
CSIRO Publishing, MLA (Australia)
I authored Chapter 5 on North American beef production in the book Beef Production and Trade. This book covers global beef production considerations, but has heavy influence on the Australian industry and associated scenarios.
Beef cattle production system capacity considerations for improved food security: A case study in Myanmar
Animal Frontiers
Myanmar is one of the most underdeveloped nations of the world. The economy is heavily based on agriculture, and cattle are used throughout the country for draft, particularly by farmers. Myanmar’s national economy is also rapidly developing, and there is great potential to increase food security and food quality in cattle and other livestock industries. In this case report, we discuss several scenarios and observations regarding the Myanmar cattle industry in combination with broad-scale beef cattle production systems considerations that can be applied for long-term sustainability in developing nations, regions, or individual operations. Most of the concepts discussed here are also important for sustainable beef cattle production systems globally.
North American Beef Production (Chapter 5)
CSIRO Publishing, MLA (Australia)
I authored Chapter 5 on North American beef production in the book Beef Production and Trade. This book covers global beef production considerations, but has heavy influence on the Australian industry and associated scenarios.
Beef cattle production system capacity considerations for improved food security: A case study in Myanmar
Animal Frontiers
Myanmar is one of the most underdeveloped nations of the world. The economy is heavily based on agriculture, and cattle are used throughout the country for draft, particularly by farmers. Myanmar’s national economy is also rapidly developing, and there is great potential to increase food security and food quality in cattle and other livestock industries. In this case report, we discuss several scenarios and observations regarding the Myanmar cattle industry in combination with broad-scale beef cattle production systems considerations that can be applied for long-term sustainability in developing nations, regions, or individual operations. Most of the concepts discussed here are also important for sustainable beef cattle production systems globally.
Beef Cattle Production Systems
CABI
This is a 14-chapter text book designed for international student and producer audiences interested in beef cattle production. It provides an integrated view of beef cattle production with a systems-based approach, discussing the interrelationships of a broad range of topics with the overall goal of optimizing cattle production for increased profit. There are study questions at the end of each chapter. Available through most typical book retailers.
North American Beef Production (Chapter 5)
CSIRO Publishing, MLA (Australia)
I authored Chapter 5 on North American beef production in the book Beef Production and Trade. This book covers global beef production considerations, but has heavy influence on the Australian industry and associated scenarios.
Beef cattle production system capacity considerations for improved food security: A case study in Myanmar
Animal Frontiers
Myanmar is one of the most underdeveloped nations of the world. The economy is heavily based on agriculture, and cattle are used throughout the country for draft, particularly by farmers. Myanmar’s national economy is also rapidly developing, and there is great potential to increase food security and food quality in cattle and other livestock industries. In this case report, we discuss several scenarios and observations regarding the Myanmar cattle industry in combination with broad-scale beef cattle production systems considerations that can be applied for long-term sustainability in developing nations, regions, or individual operations. Most of the concepts discussed here are also important for sustainable beef cattle production systems globally.
Beef Cattle Production Systems
CABI
This is a 14-chapter text book designed for international student and producer audiences interested in beef cattle production. It provides an integrated view of beef cattle production with a systems-based approach, discussing the interrelationships of a broad range of topics with the overall goal of optimizing cattle production for increased profit. There are study questions at the end of each chapter. Available through most typical book retailers.
Feed Intake and Weight Changes in Bos indicus-Bos taurus Crossbred Steers Following Bovine Viral Diarrhea Virus Type 1b Challenge Under Production Conditions
Pathogens
Bovine viral diarrhea virus (BVDV) has major impacts on beef cattle production worldwide, but the understanding of host animal genetic influence on illness is limited. This study evaluated rectal temperature, weight change and feed intake in Bos indicus crossbred steers (n = 366) that were challenged with BVDV Type 1b, and where family lines were stratified across three vaccine treatments of modified live (MLV), killed, (KV) or no vaccine (NON). Pyrexia classification based on 40.0 °C threshold following challenge and vaccine treatment were investigated for potential interactions with sire for weight change and feed intake following challenge. Pyrexia classification affected daily feed intake (ADFI, p = 0.05), and interacted with day (p < 0.001) for ADFI. Although low incidence of clinical signs was observed, there were marked reductions in average daily gain (ADG) and cumulative feed intake during the first 14 day post-challenge; ADG (CV of 104%) and feed efficiency were highly variable in the 14-day period immediately post-challenge as compared to the subsequent 14-day periods. A sire × vaccine strategy interaction affected ADFI (p < 0.001), and a sire by time period interaction affected ADG (p = 0.03) and total feed intake (p = 0.03). This study demonstrates that different coping responses may exist across genetic lines to the same pathogen, and that subclinical BVDV infection has a measurable impact on cattle production measures.
North American Beef Production (Chapter 5)
CSIRO Publishing, MLA (Australia)
I authored Chapter 5 on North American beef production in the book Beef Production and Trade. This book covers global beef production considerations, but has heavy influence on the Australian industry and associated scenarios.
Beef cattle production system capacity considerations for improved food security: A case study in Myanmar
Animal Frontiers
Myanmar is one of the most underdeveloped nations of the world. The economy is heavily based on agriculture, and cattle are used throughout the country for draft, particularly by farmers. Myanmar’s national economy is also rapidly developing, and there is great potential to increase food security and food quality in cattle and other livestock industries. In this case report, we discuss several scenarios and observations regarding the Myanmar cattle industry in combination with broad-scale beef cattle production systems considerations that can be applied for long-term sustainability in developing nations, regions, or individual operations. Most of the concepts discussed here are also important for sustainable beef cattle production systems globally.
Beef Cattle Production Systems
CABI
This is a 14-chapter text book designed for international student and producer audiences interested in beef cattle production. It provides an integrated view of beef cattle production with a systems-based approach, discussing the interrelationships of a broad range of topics with the overall goal of optimizing cattle production for increased profit. There are study questions at the end of each chapter. Available through most typical book retailers.
Feed Intake and Weight Changes in Bos indicus-Bos taurus Crossbred Steers Following Bovine Viral Diarrhea Virus Type 1b Challenge Under Production Conditions
Pathogens
Bovine viral diarrhea virus (BVDV) has major impacts on beef cattle production worldwide, but the understanding of host animal genetic influence on illness is limited. This study evaluated rectal temperature, weight change and feed intake in Bos indicus crossbred steers (n = 366) that were challenged with BVDV Type 1b, and where family lines were stratified across three vaccine treatments of modified live (MLV), killed, (KV) or no vaccine (NON). Pyrexia classification based on 40.0 °C threshold following challenge and vaccine treatment were investigated for potential interactions with sire for weight change and feed intake following challenge. Pyrexia classification affected daily feed intake (ADFI, p = 0.05), and interacted with day (p < 0.001) for ADFI. Although low incidence of clinical signs was observed, there were marked reductions in average daily gain (ADG) and cumulative feed intake during the first 14 day post-challenge; ADG (CV of 104%) and feed efficiency were highly variable in the 14-day period immediately post-challenge as compared to the subsequent 14-day periods. A sire × vaccine strategy interaction affected ADFI (p < 0.001), and a sire by time period interaction affected ADG (p = 0.03) and total feed intake (p = 0.03). This study demonstrates that different coping responses may exist across genetic lines to the same pathogen, and that subclinical BVDV infection has a measurable impact on cattle production measures.
Antibody titers to vaccination are not predictive of level of protection against a BVDV type 1b challenge in Bos indicus - Bos taurus steers
Vaccine
Subclinical illness associated with infection is thought to reduce performance and increase production costs in feedlot cattle, but underlying components remain largely unidentified. Vaccination is frequently used in feedlot settings but producers lack metrics that evaluate the effectiveness of vaccination programs. The goal of this study was to determine if levels of serum neutralizing antibody titers were predictive of levels of vaccine protection in a commercial setting. During this four-year study, Angus-Nellore steers housed in a production feedlot setting were assigned to 1 of 3 vaccine treatments: killed vaccine (kV), modified live virus (MLV) vaccine, or no vaccine (control), and were challenged with a noncytopathic 1b field strain of bovine viral diarrhea virus. Rectal temperature and levels of circulating lymphocytes and platelets were monitored following challenge. While no animals were diagnosed as clinically ill with respiratory disease, indicators of disease (pyrexia, lymphopenia, and thrombocytopenia) were observed. The MLV treatment had the highest proportion, 34.68%, of animals that were protected against the challenge regardless of the pre-challenge antibody titer and had the fewest number of lymphopenia cases in response to the challenge. Both vaccine treatments mitigated thrombocytopenia when compared to the control treatment, and the MLV treatment reduced lymphopenia; however, these symptoms were not completely eliminated in vaccinated animals. Pyrexia was present in 40.11% of the animals, but no difference in the frequency of cases between treatments was observed.
