Establishing Criteria for a Method to Automatically Detect the Onset of Parturition and Dystocia in Breeding Pigs

作者：Gutierrez Winson Montanez; Kim Dae Geun; Kim Dong Hyeok; Kim Suk; Lee Seung Joo; Kim Byeong Woo; Hong Jong Tae; Yu Byeong Ki; Kim Hyuck Joo; Oh Taek Keun; Chang Hong Hee^*

来源：Journal of the Faculty of Agriculture, Kyushu University, 2011, 56(1): 57-61.

DOI：10.5109/19637

The aims of the present study were to characterize the farrowing process in gilts and multiparous sows in terms of duration of farrowing, birth intervals, birth weight, piglets born alive, stillbirth, mummified and dystocia by comparing means in terms of parities, and to establish criteria for a method to automatically detect the first birth and dystocia in breeding pigs for a selected farm in South Korea. One hundred nine Yorkshire x Landrace; YL, Landrace x Yorkshire; LY which were mainly raised in South Korea were used for this study (31 breeding pigs for parity 1; 48 breeding pigs for parity 2 to 6; 30 breeding pigs for parity 7 to 12). Though the results varied from one another, we didn't find any statistical significant differences within the observed parameters from the different parities studied. Given that our findings were still within the range values of the previously published works therefore our results can be a useful tool to establish a criterion to characterize the process of parturition. In this present study, we were able to established a criteria about the onset of birth by the observation that if a first discharged object is detected from a sow that weighs more than 400 g, it can be confirm that she is already been undergoing the process of farrowing and the good criterion to consider that a sow is undergoing dystocia is an interval of more than 30 min. Moreover, we believe that the parity of breeding pigs is not necessarily required in establishing criterion in detecting the onset of farrowing and dystocia because we found no significant difference results among the different parities studied. In this paper we just aimed to establish a criteria for a method to automatically detect the onset of parturition and dystocia in breeding pigs with an specific breed, location and season, therefore, we acknowledge that our findings may not be considered as the general criteria to a method to detect the onset of birth and dystocia in breeding pigs, to all type of parturition and to all breeds however we believed that it can be a useful tool to evaluate our newly developed automatic parturition detecting device which is now currently on progress and which will be tested on the same experimental farm and during the specified seasons.

• 出版日期2011-2