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Arkansas Animal Science Department Report 2001 Table 1. Mean titers for Cl. chauvoei, Cl. sordellii and Cl. perfringens type D in serum of calves vaccinated with either Alpha-7 or Ultrabac 7. Experimental Cl. chauvoei Cl. sordellii Cl. perfringens type D period, d A7 a UB7 b Significance A7 UB7 Significance A7 UB7 Significance level level level 0 6.7 5.7 NS c 0.05 0.05 NS 0.05 0.05 NS 28 61.4 13.6 P < 0.05 0.40 0.30 NS 0.30 0.10 P < 0.06 56 27.7 156.1 P < 0.02 0.40 1.80 P < 0.01 0.30 0.30 NS 84 42.5 37.3 NS 0.30 0.80 P < 0.01 0.30 0.20 NS 112 17.7 20.0 NS 0.10 0.10 NS 0.50 0.10 P < 0.01 a A7 = Alpha-7. b UB7 = Ultrabac 7. c NS = not significant (P > 0.10). Table 2. Mean titers Cl. novyi, Cl. septicum and Cl. perfringens type C in serum of calves vaccinated with either Alpha-7 or Ultrabac 7. Experimental Cl. novyi Cl. septicum Cl. perfringens type C period, d A7 a UB7 b Significance A7 UB7 Significance A7 UB7 Significance level level level 0 0.05 0.05 NS c 0.05 0.05 NS 0.08 0.09 NS 28 0.90 0.08 P < 0.06 0.70 0.90 NS 4.00 1.90 NS 56 0.60 2.10 P < 0.01 0.60 0.90 NS 3.50 8.40 P < 0.01 84 0.50 0.60 NS 0.50 0.60 NS 0.80 2.80 P < 0.01 112 0.25 0.10 NS 0.50 0.60 NS 0.60 1.40 NS a A7 = Alpha-7. b UB7 = Ultrabac 7. c NS = not significant (P > 0.10). 78
Examination of Hospital Pen Management for Stocker Cattle Operations J. Robins, S. Krumpelman, and D. H. Hellwig 1 Story in Brief Two experiments were conducted to examine the management of hospital pens in a stocker facility. Eighty-six calves (bulls and steers, 443 to 618 lb) and126 calves (bulls, steers and heifers, 213 to 415 lb) were used in experiments 1 and 2, respectively. For each experiment, the calves were blocked by weight and randomly assigned to 1.1-acre grass lots with 21 or 22 calves per lot. The calves were examined daily for signs of bovine respiratory disease (BRD), given a clinical illness score (CIS) and treated according to protocol. When each calf was treated for BRD, it was assigned to either group 1 or group 2 (alternately). Calves in group 1 were sent to a hospital pen after treatment, while calves in group 2 were returned to their home pen to recover. In either experiment, there were no significant differences between groups in percentage of treatment successes, treatment failures or relapses. In addition, there were no significant differences between groups for ADG, medication costs, and cost per pound of gain in either experiment. Introduction The goals of a stocker cattle or feedlot health program include reducing mortality due to disease, minimizing disease outbreaks, economically enhancing cattle performance and utilizing professional assistance with health and production management (Lechtenberg et al., 1998; Smith et al., 1993; USDA, 1999). Many operations will utilize a hospital facility for the treatment and recovery of sick animals. These facilities provide a place for animals to recover in a low-stress, non-competitive environment. It is convenient for the hospital manager to evaluate the animal’s response to treatment as well as re-evaluating the therapy for treatment failures. There are however, disadvantages to using a hospital area. These include exposure of the animal to additional pathogens, the development of “seeder” calves that can bring new pathogens back to the home pen, the social adjustment of the calf in a new environment, and poorly managed pens that don’t provide a stress-free environment for the recovering calf. The objective of these studies was to compare the use of a hospital pen against home pen replacement following treatment for bovine respiratory disease (BRD). Experimental Procedures Experiment 1. Eighty-six stocker calves (bulls and steers) with weights ranging from 443 to 618 lb were purchased from several salebarns in Central Arkansas and delivered as a group to the University of Arkansas Beef Cattle Research Facility in Savoy. All animals were initially processed within 24 hours of arrival. This included a modified-live viral vaccine (Frontier 4-Plus ® , Bayer Corp., Shawnee Mission, KS), a multivalent clostridial bacterin (Vision-7 ® , Bayer Corp., Shawnee Mission, KS), and a tetanus toxoid. (Vision-CDT ® , Bayer Corp., Shawnee Mission, KS). A pour-on endectocide (Eprinex ® , Merial, Athens, GA), was used for parasite control. All animals were re-vaccinated with the same products 2 weeks after initial processing. At this time the bulls were castrated using a banding method and the horns were tipped. All calves were weighed, blocked by weight (bulls were stratified through treatment groups to nullify any affects of castration 2 weeks after arrival) and randomly assigned to one of four grass lots (1.1-acres) with 21 or 22 calves per lot. The animals were initially offered a 16% pelleted protein supplement at a rate of 2 lb per head per day. This was gradually increased over one week to a maximum of 4 lb per head per day. This amount was offered daily until the end of the study (28 d). Grass hay was supplemented as necessary. Calves with clinical signs of BRD (Table 1) were removed from their home pens and evaluated for treatment. Each calf was given a clinical illness score (CIS, Table 2), treated for BRD (Table 3) and alternately assigned to one of two groups. Calves from group 1 were sent to a hospital pen to recover and calves from group 2 were, upon treatment, sent back to the respective home pen for recovery. Treatment success was characterized by a CIS of < 2 accompanied by a reduction in body temperature by 20°F or < 104°F. No improvement in CIS and no reduction in body temperature were considered to be a treatment failure and the next successive (Table 3) treatment was initiated. A BRD relapse was defined as showing clinical signs of BRD within 21 days of recovery. There were designated hospital pens for first, second and third treatments. 1 All authors are associated with the Department of Animal Science, Fayetteville. 79
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Arkansas Animal Science Department
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spine copy ARKANSAS ANIMAL SCIENCE
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INTRODUCTION The faculty and staff
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COMMON ABBREVIATIONS Abbreviation T
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The Effects of Nitrogen Fertilizati
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Demographics and Academic Success o
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Efficacy of Mannan Oligosaccharide
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The Use of Hurdle Technology to Red
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Consumer Acceptability of Forage Fe
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