- 期刊
台灣企業養豬場流死產胎兒及新生仔豬死亡原因分析
Pathological Studies of Abortion, Stillbirth and Neonatal Deaths on a Swine Herd in Taiwan
摘要
A one-year survey, lasting from January to December 1987, was carried out on an intensive swine herd in Taiwan to determine the incidence and causes of death in aborted, stillborn (type I & II) fetus, and neonatal piglets. The statistical analysis was performed of the relationship between season, environmental temperature, parity as well as breed to the causes of death. A total number of 1,882 piglets and fetus were necropsied, with the losses totally to 27.3% (1882/ 6892). The death was classified as follows: aborted fetus 58(0.84%); mummified fetus 177(2.57%) and macerated fetus 129(1.85%); intrapaturient death(type II stillbirth) 8.55%(589/6892); hebdomadal neonatal death 13.47%(929/ 6892). The results of the Japanese virus isolation(81 parities) and Psendorabies virus isolation(80 parities)were all negative in submitted stillborn and macerated fetus. The causes of the neonatal death were divided into the following groups: developmental and physical, infectious, congenital defect, Postmortem, unknown, immediate death and miscellaneous condition . The main cause of neonatal death was developmental and physical disorders (54.8% of losses). The stillborn and neonatal losses of the piglets reached a peak in July, whereas the type II stillbirth (1.12/litter) and neonatal death (1.57/litter) were higest in II season (16th April to 7th August)(P ＜ 0.01). Total born, born alive and neonatal death of the piglets perlitter were highest in Yorkshire breed (P ＜ 0.01). More than 3rd. parity had higher piglet born alive (P ＜ 0.05) and neonatal death perlitter (P ＜ 0.01).
並列摘要
A one-year survey, lasting from January to December 1987, was carried out on an intensive swine herd in Taiwan to determine the incidence and causes of death in aborted, stillborn (type I & II) fetus, and neonatal piglets. The statistical analysis was performed of the relationship between season, environmental temperature, parity as well as breed to the causes of death. A total number of 1,882 piglets and fetus were necropsied, with the losses totally to 27.3% (1882/ 6892). The death was classified as follows: aborted fetus 58(0.84%); mummified fetus 177(2.57%) and macerated fetus 129(1.85%); intrapaturient death(type II stillbirth) 8.55%(589/6892); hebdomadal neonatal death 13.47%(929/ 6892). The results of the Japanese virus isolation(81 parities) and Psendorabies virus isolation(80 parities)were all negative in submitted stillborn and macerated fetus. The causes of the neonatal death were divided into the following groups: developmental and physical, infectious, congenital defect, Postmortem, unknown, immediate death and miscellaneous condition . The main cause of neonatal death was developmental and physical disorders (54.8% of losses). The stillborn and neonatal losses of the piglets reached a peak in July, whereas the type II stillbirth (1.12/litter) and neonatal death (1.57/litter) were higest in II season (16th April to 7th August)(P ＜ 0.01). Total born, born alive and neonatal death of the piglets perlitter were highest in Yorkshire breed (P ＜ 0.01). More than 3rd. parity had higher piglet born alive (P ＜ 0.05) and neonatal death perlitter (P ＜ 0.01).