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Jud Heinrichs
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Jud Heinrichs

  • Professor of Dairy and Animal Science
324 Henning Building
University Park , PA 16802
E-mail:

Office Phone: (814) 863-3916

Education

  1. Ph.D., Dairy Science, Ohio State University, 1982
  2. M.S., Dairy Science, Ohio State University, 1980
  3. B.S., Animal Science, Cornell University, 1977

Areas of Interest

  • Heifer Management
  • Forages

Biography

Jud is a native of Sullivan County New York, where he was raised on a small Holstein farm.

Jud has been with Penn State since 1982, initally in an extenion appointment and later in an extension/research appointment. His program area is dairy nutrition and management with an emphasis in replacements. Jud's interest in the growth and management of dairy heifers has allowed him to work on several population studies of growth rates of dairy heifers as well as revise the Holstein weight tapes currently used worldwide. He is also a co-inventor of the Penn State Forage and TMR Particle Size Separator.

Jud spent his sabbatical from 1991 to 1992 with the USDA, where he was in charge of the National Dairy Heifer Evaluation Project. He has authored over 75 journal articles and book chapters as well as many extension publications, primarily in the area of dairy replacements and forages.

Research

Calf/Heifer Nutrition and Management; Forage Feeding Management

Extension

Dairy Nutrition, Dairy Calf and Heifer Management

Dr. Heinrichs has sponsored the construction of the Dairy Cattle Nutrition Web site at http://www.das.psu.edu/dairynutrition, which provides a great deal of information about dairy cattle nutrition for the dairy producer.

Honors and Awards

  • 2000 Nutritional Professionals Applied Dairy Nutrition Award: American Dairy Science Association
  • 2002 Pennsylvania Dairyman’s Association Extension Award

Employment

  • The Pennsylvania State University, Professor, 1994 to present
  • The Pennsylvania State University, Associate Professor, 1988 to 1994
  • The Pennsylvania State University, Assistant Professor, 1982 to 1988
  • Liberty Mills, Nutrition Consultant, 1979 to 1982
  • Agricultural Technical Institute, Instructor, 1980 to 1981
  • The Ohio State University, Graduate Research Assistant, 1977 to 1982

Graduate Students

Current Students:

  • Travis Edwards - B.S. Penn State
  • Jorge Elizondo Salazar - M.S. Penn State, B.S. University of Costa Rica
  • Gustavo Lascano - B.S. Zamorano University
  • Robert Leuer - B.S. University of Minnesota
  • Daryl Maulfair - B.S. Penn State
  • Geoff Zanton - B.S. University of Wisconsin-Madison

Previous Students:

  • Sylvia (Wawrzyniak) Kehoe (Ph.D. 2006), Assistant Professor of Dairy Science, University of Wisconsin-River Falls
  • Meghan Moody (M.S. 2006), Dairy Nutritionist, Blue Seal Feeds
  • Keith Lesmeister (Ph.D. 2004), Dairy Nutritionist, Brown's Feeds
  • Paul Kononoff (Ph.D. 2002), Assistant Professor of Animal Science, University of Nebraska
  • Matt Gabler (Ph.D. 2002), Regional Manager, ADM Alliance Inc.
  • Brian Lammers (Ph.D. 1998), Dairy Nutritionist, ADM Alliance Inc.

Graduate Committees:

  • 2001: Booth, J. A.; Ph.D. in Animal Science, Iowa State University
  • 2001: Zhang, M.; Ph.D. in Agricultural and Biological Engineering
  • 2000: Lategan, E.; M. S. in Animal Science, University of Stellenbosch, South Africa
  • 2000: Holtshausen, L.; M. S. in Animal Science, University of Stellenbosch, South Africa
  • 1998: Hoover, L.; M.S. in Agricultural and Biological Engineering

Memberships

  • American Dairy Science Association
  • American Society of Animal Science
  • American Registry Of Professional Animal Scientists
  • American Forage and Grassland Council
  • Pennsylvania Forage and Grassland Council
  • Pennsylvania Extension Professors Association
  • Gamma Sigma Delta

Recent Publications

Articles published in refereed journals:

  • Vazquez-Anon, M., A. J. Heinrichs, J. M. Aldrich, and G. A. Varga. 1993. Effect of postweaning age on rate of in situ protein disappearance in calves weaned at 5 weeks of age. J. Dairy Sci. 76:2749-2757.
  • Vazquez-Anon, M., A. J. Heinrichs, J. M. Aldrich, and G. A. Varga. 1993. Postweaning age effects on rumen fermentation end-products and digesta kinetics in calves weaned at 5 weeks of age. J. Dairy Sci. 76:2742-2748.
  • Heinrichs, A. J. 1993. Raising dairy replacements to meet the needs of the 21st century. J. Dairy Sci. 76:3179-3187.
  • Heinrichs, A. J., and N. E. Kiernan. 1994. Initial results of a statewide extension program in calf and heifer management in Pennsylvania. J. Dairy Sci.77:338-342.
  • Kiernan, N. E., and A. J. Heinrichs. 1994. Identifying overlapping calf and heifer management practices within subgroups of dairy farmers. Prev. Vet. Med.18:225-236.
  • Heinrichs, A. J., and G. L. Hargrove. 1994. Standards of weight and height for Ayrshire, Brown Swiss, and Milking Shorthorn heifers. J. Dairy Sci. 77:1676-1681.
  • Heinrichs, A. J. 1994. Milk replacers for dairy calves: A review. PART 1. Compend. Cont. Ed. 16:1605-1612.
  • Heinrichs, A. J., S. J. Wells, H. S. Hurd, G. A Hill, and D. T. Dargatz. 1994. The National Dairy Heifer Evaluation Project: profile of replacement heifer management practices on dairy operations in the United States. J. Dairy Sci. 78:2831-2837.
  • Heinrichs, A. J. 1995. Milk replacers for dairy calves: A review. PART 2. Compend. Cont. Ed. 17:433-438.
  • Heinrichs, A. J., S. J. Wells, and W. C. Losinger. 1995. A study of the use of milk replacers for dairy calves in the United States. J. Dairy Sci. 78:2831-2837.
  • Erb, H. N., A. J. Heinrichs, R. E. Woods, and W. M. Sischo. 1996. Test-retest repeatability of the National Animal Health Monitoring System Dairy Heifer Health Report in New York and Pennsylvania, USA. Prev. Vet. Med. 25:291-300.
  • Losinger, W. C., and A. J. Heinrichs. 1996. Dairy operation management practices and herd milk production. J. Dairy Sci. 79:506-514.
  • Losinger, W. C. and A. J. Heinrichs. 1996. The management practices associated with herd milk production as determined from the National Dairy Heifer Evaluation Project. J. Dairy Sci. 79:506-514.
  • Lammers, B. P., D. R. Buckmaster, and A. J. Heinrichs. 1996. A simple method for the analysis of forage and TMR particle size. J. Dairy Sci. 79:922-928.
  • Heinrichs, A. J., N. E. Kiernan, and V. A. Ishler. 1996. Keys to developing an effective satellite extension program. J. Dairy Sci. ADSA 1995 Symposium paper 79:1981-1987.
  • Heinrichs, A. J. 1996. Nutrition and management of replacement cattle. Animal Feed Sci. 59:155-166.
  • Losinger, W. C. and A. J. Heinrichs. 1996. Management practices associated with high death levels due to respiratory problems among preweaned dairy heifers. JAVMA 209:1756-1759.
  • Lammers, B. P., J. W. vanKoot, A. J. Heinrichs and R. E. Graves. 1996. The effect of different types of calf hutches on heat stress. Appl. Engineering in Agr. 12:741-745.
  • Losinger, W. C. and A. J. Heinrichs. 1997. Management practices associated with high mortality among preweaned dairy heifers. J. Dairy Research 64:1-11.
  • Terosky, T. L., A. J. Heinrichs, and L. W. Wilson. 1997. A Comparison of milk protein sources in calf diets up to eight weeks of age. J. Dairy Sci. 79:1981-1987.
  • Losinger, W. C. and A. J. Heinrichs. 1997. Age and body weight at first calving for Holsteins in the United States. Pre. Vet . Med. 32:193-205.
  • Heinrichs, A. J., and W. C. Losinger. 1998. Growth of Holstein dairy heifers in the United States. J. Anim. Sci. 76:1254-1260.
  • Place, N. T., A. J. Heinrichs, and H. N. Erb. 1998. The effects of dieseas, management, and nutrition on average daily gain of heifers from birth to four months of age. J. Dairy Sci. 81:1004-1009.
  • Losinger, W. C. and A. J. Heinrichs. 1998. Factors associated with high scours mortality among preweaned dairy heifers. Arch. Zootecnia. 46:311-322.
  • Longenbach, J. I. and A. J. Heinrichs. 1998. A review of the importance and physiological role of curd formation in the abomasum of young calves. Animal Feed Science and Technology 73:85-97.
  • Lammers, B. P., A. J. Heinrichs, and A. Aydin. 1998. The effect of whey protein concentrate or dried skim milk in milk replacer on calf performance and blood metabolites. J. Dairy Sci. 81:1940-1945.
  • Longenbach, J. L., A. J. Heinrichs, and R. E. Graves. 1999. Feed bunk length requirements for Holstein dairy heifers. J. Dairy Sci. 82: 99-109.
  • Heinrichs, A. J., D. R. Buckmaster, and B. P. Lammers. 1999. Processing, mixing, and particle size reduction of forage for dairy cattle. J. Animal Sci. 77: 180-186.
  • Lammers, B. P., A. J. Heinrichs, and R. S. Kensinger. 1999. The effects of accelerated growth rates and estrogen implants in prepubertal Holstein heifers on growth, feed efficiency, and blood parameters. J. Dairy Sci. 82: 1746-1752.
  • Lammers, B. P., A. J. Heinrichs, and R. S. Kensinger. 1999. The effects of accelerated growth rates and estrogen implants in prepubertal Holstein heifers on estimates of mammary development and subsequent reproduction. J. Dairy Sci. 82: 1753-1764.
  • Lammers, B. P. and A. J. Heinrichs. 2000. The response of altering the ratio of dietary protein to energy on growth, feed efficiency, and mammary development in rapidly growing prepubertal heifers. J. Dairy Sci. 83:977-983.
  • Gabler, M. T., P. R. Tozer, and A. J. Heinrichs. 2000. Development of a cost analysis spreadsheet for calculating the costs to raise a replacement dairy heifer. J. Dairy Sci. 83:1104-1109.
  • Tozer, P. R., and A. J. Heinrichs. 2001. What affects the costs of raising dairy heifers: A multiple component analysis. J. Dairy Sci. 84:1836-1844.
  • Kononoff, P. J, H. A. Lehman, and A.J. Heinrichs. 2002. Technical Note-A comparison of methods used to measure eating and ruminating time in cattle. J. Dairy Sci. 85:1801-1803.
  • Gabler, M. T., and A. J. Heinrichs. 2003. Dietary protein to metabolizable energy ratios on feed efficiency and structural growth of prepubertal Holstein heifers. J. Dairy Sci. 86:268-274.
  • Kononoff, P. J, and A. J. Heinrichs. 2003. The effect of reducing alfalfa particle size on cows in early lactation. J. Dairy Sci. 86: 1445-1457.
  • Kononoff, P. J, A. J. Heinrichs, and D. R. Buckmaster. 2003. Modification of the Penn State Forage and Total Mixed Ration Particle Separator and effects of moisture content on its measurements. J. Dairy Sci. 86:1858-1863.
  • Gabler, M. T., and A. J. Heinrichs. 2003. Altering soluble and potentially degradable protein for prepubertal Holstein heifers. J. Dairy Sci. 86:2122-2130.
  • Gabler, M. T., and A. J. Heinrichs. 2003. Effects of increasing dietary protein on nutrient utilization in heifers. J. Dairy Sci. 86:2170-2177.
  • Kononoff, P. J, and A. J. Heinrichs. 2003. The effect of corn silage particle size and cottonseed hulls on cows in early lactation. J. Dairy Sci. 86:2438-2451.
  • Kononoff, P. J, A. J. Heinrichs and H. A. Lehman. 2003. The effects of corn silage particle size on eating behavior, chewing activities, and rumen fermentation in lactating cows. J. Dairy Sci. 86:3343-3353.
  • Heinrichs, A. J., C. M. Jones, and B. S. Heinrichs. 2003. Effect of mannan oligosaccharide or antibiotics in neonatal dairy calf diets on health and growth. J. Dairy Sci. 86:4064-4069.
  • Lesmeister, K. E., P. R. Tozer, and A. J. Heinrichs. 2004. Development and analysis of a rumen tissue sampling procedure. J. Dairy Sci. 87: 1366-1344.
  • Lesmeister, K. E., A. J. Heinrichs, and M. T. Gabler. 2004. Effects of supplemental yeast (Saccharomyces cerevisiae) culture on rumen development, growth characteristics, and blood parameters in neonatal dairy calves. J. Dairy Sci. 87: 1832-1839.
  • Lesmeister, K. E., and A. J. Heinrichs. 2004. Effects of corn processing on growth characteristics, rumen development, and rumen characteristics in neonatal dairy calves. J. Dairy Sci. 87:3439-3450.
  • Lesmeister, K. E., and A. J. Heinrichs. 2005. Effects of adding extra molasses to a texturized calf starter on rumen development, growth characteristics, and blood parameters in neonatal dairy calves. J. Dairy Sci. 88:411-418.
  • Bailey, K. W., C. M. Jones, and A. J. Heinrichs. 2005. Economic returns to Holstein and Jersey herds under multiple component pricing. J. Dairy Sci. 88:2269-2280.
  • Heinrichs, A. J., B. S. Heinrichs, O. Harel, G. W. Rogers, and N. T. Place. 2005. A prospective study of calf factors affecting age, body size and body condition score at first calving of Holstein dairy heifers. J. Dairy Sci. 88:2828-2835.
  • Nennich, T. D., J. H. Harrison, L. M. VanWieringen, D. Meyer, A. J. Heinrichs, W. P. Weiss, N. R. St-Pierre, R. L. Kincade, D. L. Davidson adn E. Block. 2005. Prediction of manure and nutrient excretion from dairy cattle. J. Dairy Sci. 88:3721-3733.
  • Zanton, G. I., and A. J. Heinrichs. 2005. Meta-analysis to assess effect of prepubertal average daily gain on Holstein heifers on first-lactation production. J. Dairy Sci. 88:3860-3867.
  • Kononoff, P. J., A. J. Heinrichs, and M. T. Gabler. 2006. The effects of nitrogen and forage source on feed efficiency and structural growth of prepubertal Holstein heifers. Prof. Anim. Scientist. 22:84-88.
  • Heinrichs, A. J., H. N. Erb, G. W. Rogers, J. B. Cooper, and C. M. Jones. 2006. Variability in Holstein heifer heart girth measurements and comparison of prediction equations for live weight. Pre. Vet . Med. In press doi:10.1016/j.prevetmed.2006.11.002.
  • Zanton, G. I., and A. J. Heinrichs. Nutrient digestibility, rumen fermentation, and nitrogen utilization in postpubertal dairy heifers given diets differing in soluble and rumen undegradable protein. J. Dairy Sci. In press.
  • Kehoe, S. I., A. M. Gehman, and A. J. Heinrichs. Effects of amylase on rumen development in neonatal dairy calves. Prof. Anim. Scientist. In press.

Abstracts:

  • Heinrichs, A. J., P. R. Tozer, P. C. Hoffman, H. Chester-Jones and M. A. Faust. 2000. Risk assessment of dairy heifer replacement options. J. Dairy Sci. 83(Suppl. 1):175.
  • Harvatine, K. J., P. J. Kononff, and A. J. Heinrichs. 2000. The effect of sample physical form on in situ digestion kenetics. J. Dairy Sci. 83(Suppl. 1):120.
  • Gabler, M. T., A.J. Heinrichs. and L.C. Griel. 2001. Increased dietary crude protein to energy ratios on in situ dry matter disappearance, rumen ammonia, nitrogen balance, and urinary excretion of purine derivatives of prepubertal Holstein heifers. J. Dairy Sci. 84(Suppl. 1):161.
  • Lesmeister, K. E., and A. J. Heinrichs. 2001. Effects of a dairy calf starter containing yeast on daily grain intake, weight gain, structural growth, and rumen development in dairy calves. J. Dairy Sci. 84(Suppl. 1):223.
  • Heinrichs, A. J., M. R. Long, and T. S. Schriefer. 2001. The response of a non-medicated milk replacer containing a monnolignosacharide on growth and health of neonatal dairy calves. J. Dairy Sci. 84(Suppl. 1):269.
  • Kononoff, P. J, H. A. Lehman, and A. J. Heinrichs. 2001. Comparison of methods used to measure eating and ruminating time in cattle. J. Dairy Sci. 84(Suppl. 1): 413.
  • Kononoff, P. J, A. J. Heinrichs, H. A. Lehman, and M. L. Long. 2001. The effect of increasing alfalfa haylage particle size on physically effective fiber. J. Dairy Sci. 84(Suppl. 1):10.
  • Gabler, M. T., and A. J. Heinrichs. 2002. A dietary protein to metabolizable energy ratio: Altering soluble and potentially degradable fractions on rumen ammonia, volatile fatty acids and nitrogen balance of prepubertal Holstein heifers. J. Dairy Sci. 85(Suppl. 1):242.
  • Kononoff, P. J, and A. J. Heinrichs. 2002. The effect of corn silage particle size and cottonseed hulls on cows in early lactation. J. Dairy Sci. 85 (Suppl. 1): 204.
  • Lesmeister, K. E., A. J. Heinrichs, and P. R. Tozer. 2002. Development of a repeatable procedure for rumen tissue sampling. J. Dairy Sci. 85 (Suppl. 1): 334.
  • Gehamn, A. M., A. J. Heinrichs, M. R. Long, and K. E. Lesmeister. 2003. The effect of amylase on rumen development in neonatal dairy calves. J. Dairy Sci. 86(Suppl. 1): 342.
  • Heinrichs, A. J., C. M. Jones, L. R. VanRoekel, and M. A. Fowler. 2003. CalfTrack: a system of dairy calf workforce management, training, and evaluation and health evaluation. J. Dairy Sci. 86(Suppl. 1): 115.
  • Kononoff, P. J., A. J. Heinrichs, and M. T. Gabler. 2003. The effect of nitrogen and forage source on feed efficiency and structural growth of prepubertal Holstein heifers. J. Dairy Sci. 86(Suppl. 1): 307.
  • Kononoff, P. J., A. J. Heinrichs, and H. A. Lehman. 2003. The effect of corn silage particle size on eating behavior, chewing activities, and rumen fermentation in lactating dairy cows. J. Dairy Sci. 86(Suppl. 1): 341.
  • Zanton, G. I., and A. J. Heinrichs. 2003. Altering protein degradability and solubility on rumen fermentation, blood urea nitrogen, and nitrogen balance in 16-18 month-old heifers. J. Dairy Sci. 86(Suppl. 1): 22.
  • Kehoe, S. I., M. L. Moody, and A. J. Heinrichs. 2004. Effect of time of milk replacer delivery on feed intake of calves during weaning. J. Dairy Sci. 87(Suppl. 1):210.
  • Zanton, G. I., and A. J. Heinrichs. 2004. Altering dry matter intake affects the nutritional efficiency of dairy heifers. J. Dairy Sci. 87(Suppl. 1):128.
  • Costello, S. S., L. A. Holden, A. J. Heinrichs, E. P. Hovingh, M. O'Connor, V. A. Ishler, R. E. Stup, and B. J. Hilty. 2005. Competency acquisition of workers participating in the Penn State Dairy Production Skills Certificate. J. Dairy Sci. 88(Suppl. 1):330.
  • Kehoe, S. I., and A. J. Heinrichs. 2005. Effects of weaning age and milk feeding frequency on calf growth, health and rumen parameters. J. Dairy Sci. 88(Suppl. 1):253.
  • Kehoe, S. I., M. L. Moody, A. J. Heinrichs, and M. R. Long. 2005. Number of lactations have no effect on immunoglobulin G concentration of heifer and cow colostrum. J. Dairy Sci. 88(Suppl. 1):57.
  • Stup, R. E., A. J. Heinrichs, R. Van Saun, and D. Wolfgang. 2005. Calf sense: Learning to manage newborn dairy calves. J. Dairy Sci. 88(Suppl. 1):330.
  • Zanton, G. I., and A. J. Heinrichs. 2005. The effects of altering dry matter intake on rumen digestion and turnover in dairy heifers. J. Dairy Sci. 88(Suppl. 1):255.
  • Zanton, G. I., M. J. Vassallo, D. R. Buckmaster, and A. J. Heinrichs. 2005. Effect of corn silage harvest method on intake and production by mid lactation dairy cows. J. Dairy Sci. 88(Suppl. 1):185.
  • Daubert, J. M., M. L. Moody, G. I. Zanton, and A. J. Heinrichs. 2006. Nitrogen and dry matter digestibility of high and low forage diets in dairy heifers. J. Dairy Sci. 89(Suppl. 1):160.
  • Kehoe, S. I., B. M. Jayarao, B. A. Straley, and A. J. Heinrichs. 2006. Effects of management techniques and farm status on bacterial contamination of colostrum. J. Dairy Sci. 89(Suppl. 1):214.
  • Moody, M. L., G. I. Zanton, and A. J. Heinrichs. 2006. Rumen fermentation patterns of dairy heifers fed restricted amounts of high and low forage diets. J. Dairy Sci. 89(Suppl. 1):366.
  • Zanton, G. I., and A. J. Heinrichs. 2006. The effects of restricted feeding a high concentrate or high forage ration for similar weight gains on structural growth in Holstein heifers. J. Dairy Sci. 89(Suppl. 1):366-367.
  • Zanton, G. I., and A. J. Heinrichs. 2006. The effects of restricted feeding high concentrate or high forage rations on rumen fermentation in dairy heifers. J. Dairy Sci. 89(Suppl. 1):438-439.
  • Zanton, G. I., A. J. Heinrichs, and E. F. Wheeler. 2006. The effects of restricted feeding high concentrate or high forage rations on nutrient digestibility and nitrogen utilization in dairy heifers. J. Dairy Sci. 89(Suppl. 1):439.

Popular Press Articles:

  • Heinrichs, A. J. and G. L. Hargrove. 1996. How big should they be? Hoard's Dairyman 141(7):275.
  • Chverchko, D. and A. J. Heinrichs. 1996. We compared weaning at 30, 45, and 60 days. Hoard's Dairyman. 141(9):362.
  • Heinrichs, A. J. 1996. There are new ways to check silage particle size. Hoard's Dairyman. 141(11):438.
  • Lammers, B. P., A. J. Heinrichs and D. R. Buckmaster. 1996. Method helps in determination of forage and TMR particle size requirements for cattle. Feedstuffs 68(14):14-16.
  • Wiggers, D. L. and A. J. Heinrichs. 1996. A survey of calf and heifer management practices. Jersey Journal 43:20-23.
  • Heinrichs, A. J. 1998. New growth charts for Holsteins. Hoard's Dairyman. 143:646-647.
  • Heinrichs, A. J. 1999. Why you should start feeding calves grain early. Hoard's Dairyman. 144:328.
  • Heinrichs, A. J. 1999. Contract heifer raising is gaining steam. Hoard's Dairyman. 144:580.
  • Heinrichs, A. J. 1999. Feed bunk scoring for high producing cows. Hoard's Dairyman. 144:580.
  • Heinrichs, A. J. 1999. Condition scoring fine tunes heifer growth. Hoard's Dairyman. 144:614.
  • Heinrichs, A. J., and K. Lesmeister. 2000. Why you should hold off on feeding forage to calves. Hoard's Dairyman 145:638.
  • Heinrichs, A. J. 2001. Just what size should they be? Hoard's Dairyman. 146(Suppl. 10/25/01):14-15.
  • Gabler, M. T., and A. J. Heinrichs. 2002. 2001, 1989 NRC requirements for dairy heifers compared. Feedstuffs. 74(10):11-13.
  • Gabler, M. T., and A. J. Heinrichs. 2002. Consider all sides of the custom grower question. Hoard's Dairyman. 147:143.
  • Gabler, M. T., A. J. Heinrichs, and P. R. Tozer. 2002. Dairy heifer rates of gain affect later profitability. Feedstuffs. 74(2):13,22.
  • Heinrichs, A. J. 2002. Pay attention to calves during cold weather. Farmshine 24:15.
  • Heinrichs, A. J. 2002. Tomorrow's productivity from today's calf. International dairy topics. 7:23-25.
  • Heinrichs, A. J., and P. J. Kononoff. 2002. Forage particle separators can tell us a lot. Hoard's Dairyman. 147:82-83.
  • Kononoff, P. J., and A. J. Heinrichs. 2002. Particle separator add-on improves analysis. Hoard's Dairyman. 147:620.
  • Kononoff, P. J., A. J. Heinrichs, and G. A. Varga. 2002. Manure can help solve nutrition puzzle. Farmshine. 24:18.
  • Gabler, M., P. Tozer, V. Ishler,and J. Heinrichs. 2003. Don't overlook manure handling costs. Hoard's Dairyman. 148:328.
  • Heinrichs, A. J. 2003. Early intake of starter should be a goal. Farmshine 25:15.
  • Heinrichs, J. 2003. Why you should feed grain to calves early. Hoard's West. 148:W108.
  • Heinrichs, J., and C. Jones. 2003. How the young calf?s stomachs change. Hoard?s Dairyman. 148:390.
  • Heinrichs, A. J., and P. J. Kononoff. 2003. Particle size can be measured for rations. Farmshine 24:5.
  • Heinrichs, A. J., and P. J. Kononoff. 2003. Proper nutrition means paying attention to particle size. Farmshine 25:17.
  • Jones, C., and J. Heinrichs. 2003. How much milk should you feed young calves? Hoard's Dairyman. 148:652.
  • Jones, C., and J. Heinrichs. 2003. Why that colostrum is so important. Hoard?s Dairyman. 148:468-469.
  • Tozer, P.,and J. Heinrichs. 2003. Don't let heifer costs eat your profit. Hoard's Dairyman. 148:139.
  • Tozer, P.,and J. Heinrichs. 2003. Go for the biggest bang when reducing replacement costs. Hoard's Dairyman. 148:203.
  • Heinrichs, A. J. 2004. Yeast culture may affect rumen development. Feedstuffs. 76(Sep 10):11-14.
  • Heinrichs, J., and C. Jones, 2004. Do's and don'ts for weaning calves. Hoard's Dairyman. 149:93.
  • Jones, C., and J. Heinrichs. 2004. What about waste milk for calves? Hoard's Dairyman. 149:184-185.
  • Jones, C., and J. Heinrichs. 2004. What makes colostrum good…or not good. Hoard's Dairyman. 149:26.
  • Kononoff, P. J., and A. J. Heinrichs. 2004. TMR fiber :long enough to work…without sorting. Hoard's Dairyman. 149:640.
  • Jones, C., and J. Heinrichs. 2005. What might be wrong with your silage. Hoard's Dairyman. 150:220.
  • Zanton, G. I., and A. J. Heinrichs. 2005. Rearing decisions can have long-term effects: Part 1. Feedstuffs. 77(51):16-17.
  • Jones, C., and J. Heinrichs. 2006. All milk replacers are not created equal. Hoard's Dairyman. 151:136.
  • Jones, C., and J. Heinrichs. 2006. Higher components will make more money. Hoard's Dairyman. 151:761.
  • Jones, C., and J. Heinrichs. 2006. Tackle the invisible losses of silage. Hoard's Dairyman. 151:59.
  • Jones, C., J. Heinrichs, and V. Ishler. 2006. Avoid these silage-making pitfalls. Hoard's Dairyman. 151:294.
  • Jones, C., J. Heinrichs, and V. Ishler. 2006. Pay attention to your silage moisture levels. Hoard's Dairyman. 151:168-169.
  • Zanton, G., and J. Heinrichs. 2006. Is there a best growth rate for heifers? Hoard's Dairyman. 151:82.
  • Zanton, G. I., and A. J. Heinrichs. 2006. Rearing decisions can have long-term effects: Part 2. Feedstuffs. 78(Feb 10).

Book Chapters:

  • Heinrichs, A. J. 1999. Dairy Calf and Heifer Management in Herd Health 3rd edition. O. M. Radostits editor. W. B. Saunders. Co.
  • Heinrichs, A. J., and L. E. Doepel. 2000. Milk Replacers in Large Animal Internal Medicine 3rd edition. B. P. Smith editor. Mosby Co.
  • Heinrichs, A. J., L. Doepel, and R. Corbett. 2001. Milk Replacers in Large Animal Internal Medicine. Harcourt Co. pp.382-386.
  • Heinrichs, A. J., and O. M. Radostits. 2001. Health and Management of dairy calves and replacement heifers in Heard Health 3rd edition. W. B. Saunders Co. pp. 333-396.
  • Kehoe, S. I. and A. J. Heinrichs. 2004. Gastrointestinal development in dairy calves. In: Nutritional Biotechnology in the Feed and Food Industries. Nottingham University Press. Pp 195-203.
  • Heinrichs, A. J., and K. E. Lesmeister. 2005. Rumen development in the dairy calf. In: Calf and Heifer Rearing. Nottingham University Press. Pp. 53-67.
  • Zanton, G. I., M. L. Moody, and A. J. Heinrichs. 2006. Improving animal feed efficiency with alternative dairy heifer feeding scenarios. In: Nutritional Biotechnology in the Feed and Food Industries. Nottingham University Press. Pp. 353-358.

Conference Proceedings:

  • Heinrichs, A. J. 1996. The importance of heifer raising to a profitable dairy farm. Northeast Regional Agr. Eng. Serv. NRAES-74. pp. 1-6.
  • Heinrichs, A. J. 1996. After colostrum and before weaning. Northeast Regional Agr. Eng. Serv. NRAES-74. pp. 230-244.
  • Heinrichs, A. J. 1997. Forage particle size recommendations for dairy cows. Northeast Regional Agr. Eng. Serv. NRAES-99 pp.268-278.
  • Place N. T. and A. J. Heinrichs. 1997. Balage feeding management. Northeast Regional Agr. Eng. Serv. NRAES-99 pp.309-318.
  • Lammers, B., M. Gabler, and J. Heinrichs. 2001. Protein and energy needs of the heifer. Pages 21-28 in Proc. North East Heifer Workshop.
  • Heinrichs, A. J. 2002. Economic Analysis of Heifer Raising Programs. Proc. Engalec National Dairy Congress. Pp. 24-31.
  • Heinrichs, A. J. 2002. Mannan oligosaccharides in the diets of dairy calves and their effects on growth and health. Biotechnologia en la Industria de la Alimentacion Animal. Pp. 175-185.
  • Heinrichs, A. J. 2002. Protein and Energy Relationships in Feed, Efficiency of Mammary Gland Development in Prepubertal Calves and First Lactation and Lifetime Milk Production. Proc. Engalec National Dairy Congress. Pp. 31-39.
  • Heinrichs, A. J. 2002. Uso do racions total mezclasa (TMR) para vacus lecheras. Proc. Costa Rican Nacional Dairy Congreso. Pp. 45-52.
  • Lammers, B. P., M. T. Gabler, and A. J. Heinrichs. 2002. Protein and energy needs of the heifer. Proc. NE Dairy Heifer Grower's Assn. pp. 21-28.
  • Lammers, B. P., M. T. Gabler, and A. J. Heinrichs. 2002. Protein and energy needs of the heifer. Proc. Tri-State Dairy Nutrition Conference. pp. 71-79.
  • Nennich, T., J. H. Harrison, D Meyer, W. P. Weiss, A. J. Heinrichs, R. L. Kincaid, W. J. Powers, R. K. Koelsch, and P. E. Wright. 2003. Development of standard methods to estimate manure production and nutrient characteristics from dairy cattle. Ninth International Animal and Food Processing Wastes Proceedings. Research Triangle Park, NC. Pp 263-268.
  • Kononoff, P. J., and A. J. Heinrichs. 2004. New developments in TMR particle size measurements. Proceedings Tri-State Dairy Nutrition Conference. Pp. 75-83.
  • Kononoff, P. J., and A. J. Heinrichs. 2004. TMR particle size analysis and interpretation. Proceedings Cornell Nutrition Conference. Pp. 167-177.
  • Heinrichs, A. J., P.J. Kononoff, and G. I. Zanton. 2005. Using particle size measurements for feeding management of corn silage based dairy rations. Proceedings of the Mid-Atlantic Nutrition Conference. Pp. 147-151.
  • Vough, L. E., D. R. Buckmaster, and A. J. Heinrichs. 2006. Baleage systems: what’s working best today. NRAES-181. Silage for Dairy Farms. Harrisburg, PA. Pp. 161-172.
  • Zanton, G. I., and A. J. Heinrichs. 2006. A new paradigm for heifer nutrition: cut manure output 20 to 40 percent. Proc. of Penn State Dairy Cattle Nutrition Workshop. Pp. 73-77.