Effect of a trainer cow on health, behavior, and performance of newly weaned beef calves.

Experiments were conducted to investigate the effects of the presence of a trainer cow on behavior, performance, health, and feeding patterns of newly weaned beef calves. In Exp. 1,252 weaned calves (270+/-18 kg) were allocated to 22 pens (11 to 15 calves per pen). A trainer cow was randomly assigned to each of 11 pens. Calves were weighed prior to feeding on d 0, 3, 7, 14, 21, and 28. Rectal temperatures were taken on each of these days (except d 28) and blood samples were collected on d 0, 3, and 7 and subsequently analyzed for serum haptoglobin and leukotoxin antibody titers. Instantaneous scan observations of calf behavior were made at 10-min intervals between 0730 and 1730 on d 1, 2, 4, 5, and 6. A similar protocol was used in Exp. 2, in which 297 calves (258+/-17 kg) were allocated to 24 pens. Blood analyses included haptoglobin, white blood cell counts (WBC), and neutrophil:lymphocyte (NL) ratios. In Exp. 3, the above protocol was followed and patterns of feed bunk attendance of individual calves were also monitored using radio frequency identification by passive transponder ear tags. Trainer cows did not influence (P > .10) calf rectal temperatures, requirements for antibiotic therapy, WBC, NL ratios, or leukotoxin antibody titers. Pooled across treatments, NL ratios were lower (P < .01) on d 0 (.31) than on d 3 (.36) or d 7 (.39). Although differences in weight gain were detected in some periods within the three experiments, there were no differences (P > .10) overall (d 0 to 28). Trainer cows did not affect (P > .05) frequency or duration of bunk visits by the calves. Averaged across treatments, frequency and duration of bunk visits increased (P < .001) from 9.6 visits/d and 56.7 min/d between d 0 and 3 to 12.3 visits/d and 108.9 min/d between d 15 and 21. The number of calves observed eating during scan sampling observations also increased from 16.4% on d 1 to 25% on d 4 (P < .10) and 29% on d 5 and 6 (P < .05). More (P < .05) calves were observed lying on d 1 (41.7%) and d 2 (45.3%) than on d 4 (37.5%), d 5 (34.8%), or d 6 (36.2%). With a trainer cow present, fewer (36.7% vs 41.5%; P < .001) calves were observed lying and more (11.7% vs 10.2%; P = .08) were observed walking than when no cow was present. Trainer cows did not improve calf health, time spent at the feed bunk, or performance of newly weaned calves.

[1]  F. Provenza,et al.  Conditioned food aversions: principles and practices, with special reference to social facilitation , 1999, Proceedings of the Nutrition Society.

[2]  Tim A. McAllister,et al.  Validation of a radio frequency identification system for monitoring the feeding patterns of feedlot cattle , 1999 .

[3]  T. Mcallister,et al.  Bunk attendance of feedlot cattle monitored with radio frequency technology , 1998 .

[4]  J. Stookey,et al.  A Comparison of Weaning Techniques in Farmed Wapiti (Cervus Elaphus) , 1997, Animal Welfare.

[5]  L. Babiuk,et al.  Serum haptoglobin as an indicator of the acute phase response in bovine respiratory disease , 1996, Veterinary Immunology and Immunopathology.

[6]  L. Stanker,et al.  Haptoglobin response to clinical respiratory tract disease in feedlot cattle. , 1996, American journal of veterinary research.

[7]  F. Provenza.  Postingestive Feedback as an Elementary Determinant of Food Preference and Intake in Ruminants , 1995 .

[8]  T. Niewold,et al.  Influence of physical stress on the plasma concentration of serum amyloid-A (SAA) and haptoglobin (Hp) in calves. , 1995, The Veterinary quarterly.

[9]  M. Shoukri,et al.  Clustering of fatal fibrinous pneumonia (shipping fever) in feedlot calves within transport truck and feedlot pen groups , 1994 .

[10]  F. Fluharty,et al.  Effects of energy density and protein source on diet digestibility and performance of calves after arrival at the feedlot. , 1994, Journal of animal science.

[11]  R. T. Brandt,et al.  Inflammatory response to clostridial vaccines in feedlot cattle. , 1994, Journal of the American Veterinary Medical Association.

[12]  A. Potter,et al.  The effect of subunit or modified live bovine herpesvirus-1 vaccines on the efficacy of a recombinant Pasteurella haemolytica vaccine for the prevention of respiratory disease in feedlot calves. , 1992, The Canadian veterinary journal = La revue veterinaire canadienne.

[13]  J. C. Pollard,et al.  Behaviour and weight change of red deer calves during different weaning procedures , 1992 .

[14]  M. T. Zavy,et al.  THE EFFECT OF THE STRESS OF WEANING AND TRANSPORT ON WHITE BLOOD CELL PATTERNS AND FIBRINOGEN CONCENTRATION OF BEEF CALVES OF DIFFERENT GENOTYPES , 1989 .

[15]  J. Griffin,et al.  Stress and immunity: a unifying concept. , 1989, Veterinary immunology and immunopathology.

[16]  D. Hutcheson,et al.  Influence of protein concentration in prefast and postfast diets on feed intake of steers and nitrogen and phosphorus metabolism of lambs. , 1988, Journal of animal science.

[17]  P. Eckersall,et al.  Bovine acute phase response following turpentine injection. , 1988, Research in veterinary science.

[18]  W. A. Phillips,et al.  THE EFFECTS OF THE STRESS OF WEANING AND TRANSIT ON PERFORMANCE AND METABOLIC PROFILE OF BEEF CALVES OF DIFFERENT GENOTYPES , 1987 .

[19]  W. Stricklin.  Some factors affecting feeding patterns of beef cattle , 1987 .

[20]  D. Hutcheson,et al.  Management of Transit-Stress Syndrome in Cattle: Nutritional and Environmental Effects , 1986 .

[21]  J. J. Lynch,et al.  Behavioural factors modifying acceptance of supplementary foods by sheep. , 1986 .

[22]  W. A. Phillips,et al.  The effect of a preassembly zeranol implant and post-transit diet on the health performance and metabolic profile of feeder calves. , 1986, Journal of animal science.

[23]  J. Mclaren,et al.  Influence of Preweaning and B-Vitamin Supplementation of The Feedlot Receiving Diet on Calves Subjected to Marketing and Transit Stress , 1982 .

[24]  L. Matthews,et al.  Learning and associated factors in ruminant feeding behaviour , 1980 .

[25]  S. P. Konggaard,et al.  Effects of isolating first-lactation cows from older cows , 1979 .

[26]  Philip N. Lehner,et al.  Handbook of ethological methods , 1979 .

[27]  A. Andrews.  Factors affecting the incidence of pneumonia in growing bulls , 1976, Veterinary Record.

[28]  R. E. Lubow,et al.  The Context Effect: The Relationship Between Stimulus Preexposure and Environmental Preexposure Determines Subsequent Learning. , 1976 .

[29]  C. J. Callahan,et al.  Effect of forage-concentrate ratio in complete feeds fed ad libitum on feed intake prepartum and the occurrence of abomasal displacement in dairy cows. , 1972, Journal of dairy science.

[30]  E. W. Klosterman,et al.  Protein and Energy Utilization during Compensatory Growth in Beef Cattle , 1972 .

[31]  C. Balch.  Proposal to use time spent chewing as an index of the extent to which diets for ruminants possess the physical property of fibrousness characteristic of roughages , 1971, British Journal of Nutrition.

[32]  Shozo Suzuki,et al.  Change in the rate of eating during a meal and the effect of the interval between meals on the rate at which cows eat roughages , 1969 .

[33]  H. H. Sambraus.  Zur sozialen Rangordnung von Rindern1 , 1969 .

[34]  R. Davis,et al.  Rate of feed consumption and body weight of beef cattle. , 1964 .

[35]  J. Meyer,et al.  Undernutrition And Subsequent Realimentation In Rats And Sheep , 1964 .