Written Paper

Toe lesion development in gilts and sows housed in confinement as influenced by toe size and toe location  [1990]

Kornegay, E.T. (Virginia Polytechnic Institute and State University, Blacksburg, VA) Bryant, K.L. Notter, D.R.

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The influence of toe size and toe location on development of toe lesions was evaluated from weaning through four parities (n - 116). Toe measurements, frequency and severity of toe lesions, and soundness scores were obtained at mean ages of 40, 115, 178, 240, 520, 732, 91 6, and 1,090 d. All toe measurements increased linearly and quadratically (P .001) with age and were influenced by toe location (P .001). Front outside and rear outside toes were the largest and rear inside toes were the smallest; front inside toes were intermediate. Toe location affected (P .001) development of toe lesions and a toe X age interaction (P .01) was observed for all types of toe lesions. Frequencies of toe lesions were similar up to 178 d of age. Afterwards, the frequency of toes with lesions rose more rapidly for the front outside and rear outside toes than for the front inside and rear inside toes. Correlation coefficients indicated that as the difference between inside and outside toe base area became larger, the frequency of inside toes with lesions decreased and the frequency of outside toes with lesions increased. This suggests that unequal toe size on the same foot increases toe lesion development on the larger toes. Selecting replacement gilts with large, evensized toes is recommended and may result in fewer toe lesions

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Applied agricultural research (USA)

ISSN : 0179-0374