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Responses of horses to trailer design, duration, and floor area during commercial transportation to slaughter.
J Anim Sci. 1999 Nov; 77(11):2925-33.JA

Abstract

Nine trailer loads of horses (n = 306) transported to slaughter facilities with distances ranging 596 to 2,496 km were studied to characterize the type of horses used in commercial markets and the physiological responses and number of injuries due to transportation under summer environmental conditions. Slaughter horse candidates were middle-aged (11.4+/-.4 yr), possessed moderately fleshy body condition, weighed 432+/-3.3 kg, and were of Quarter Horse or Thoroughbred breeding. The mean weight loss during commercial transport was 4%. The percentage of injured horses was greater (P < .05) for two-tiered "pot-belly" (29.2%) compared with straight-deck (8.0%) trailers; however, the stress indicators of cortisol and neutrophil:lymphocyte ratio and rectal temperature showed greater (P < .05) responses following transport in straight-deck trailers. As trip duration increased from 5 h 45 min to 30 h, muscle fatigue (lactate concentration) and dehydration (hematocrit and total protein concentration) were the major physiological considerations, especially in durations over 27 h. The percentage of horses injured was less (P < .05) in trailers with 1.14 to 1.31 m2 of floor area per horse than in trailers with 1.40 to 1.54 m2 of floor area per horse. However, most physiological responses (white blood cell count, total protein concentration, and neutrophil:lymphocyte ratio) to transportation were less (P < .05) in horses provided with the greater floor area.

Authors+Show Affiliations

Veterinary Medicine Cooperative Extension, University of California, Davis 95616, USA. clstull@ucdavis.edu

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

10568460

Citation

Stull, C L.. "Responses of Horses to Trailer Design, Duration, and Floor Area During Commercial Transportation to Slaughter." Journal of Animal Science, vol. 77, no. 11, 1999, pp. 2925-33.
Stull CL. Responses of horses to trailer design, duration, and floor area during commercial transportation to slaughter. J Anim Sci. 1999;77(11):2925-33.
Stull, C. L. (1999). Responses of horses to trailer design, duration, and floor area during commercial transportation to slaughter. Journal of Animal Science, 77(11), 2925-33.
Stull CL. Responses of Horses to Trailer Design, Duration, and Floor Area During Commercial Transportation to Slaughter. J Anim Sci. 1999;77(11):2925-33. PubMed PMID: 10568460.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Responses of horses to trailer design, duration, and floor area during commercial transportation to slaughter. A1 - Stull,C L, PY - 1999/11/24/pubmed PY - 1999/11/24/medline PY - 1999/11/24/entrez SP - 2925 EP - 33 JF - Journal of animal science JO - J. Anim. Sci. VL - 77 IS - 11 N2 - Nine trailer loads of horses (n = 306) transported to slaughter facilities with distances ranging 596 to 2,496 km were studied to characterize the type of horses used in commercial markets and the physiological responses and number of injuries due to transportation under summer environmental conditions. Slaughter horse candidates were middle-aged (11.4+/-.4 yr), possessed moderately fleshy body condition, weighed 432+/-3.3 kg, and were of Quarter Horse or Thoroughbred breeding. The mean weight loss during commercial transport was 4%. The percentage of injured horses was greater (P < .05) for two-tiered "pot-belly" (29.2%) compared with straight-deck (8.0%) trailers; however, the stress indicators of cortisol and neutrophil:lymphocyte ratio and rectal temperature showed greater (P < .05) responses following transport in straight-deck trailers. As trip duration increased from 5 h 45 min to 30 h, muscle fatigue (lactate concentration) and dehydration (hematocrit and total protein concentration) were the major physiological considerations, especially in durations over 27 h. The percentage of horses injured was less (P < .05) in trailers with 1.14 to 1.31 m2 of floor area per horse than in trailers with 1.40 to 1.54 m2 of floor area per horse. However, most physiological responses (white blood cell count, total protein concentration, and neutrophil:lymphocyte ratio) to transportation were less (P < .05) in horses provided with the greater floor area. SN - 0021-8812 UR - https://www.unboundmedicine.com/medline/citation/10568460/Responses_of_horses_to_trailer_design_duration_and_floor_area_during_commercial_transportation_to_slaughter_ L2 - https://academic.oup.com/jas/article-lookup/doi/10.2527/1999.77112925x DB - PRIME DP - Unbound Medicine ER -