The combined selection index used in the breeding of new Yorkshire dam line with high prolificacy according to breeding objects was formulated as /：2.272E- BVNB-0.056EBVDAYS. After 5 generations breeding, the two mai...The combined selection index used in the breeding of new Yorkshire dam line with high prolificacy according to breeding objects was formulated as /：2.272E- BVNB-0.056EBVDAYS. After 5 generations breeding, the two main selected traits such as total number of born and age at 100 kg weight was 12.17 piglets/litter and 165.18 d, respectively. The genetic improvements per generates was 0.156 and -2.198, respec- tively. The breeding objects of the new Yorkshire dam line with high prolificacy were basically reached. It indicated that the methods and index could be used in pig breeding.展开更多
Objective： To investigate the necessity of modification to the traditional pigtail probe and evaluate its efficiency and therapeutic effect in searching the nasal cut ends and anastomosing the lacerated lacrimal cana...Objective： To investigate the necessity of modification to the traditional pigtail probe and evaluate its efficiency and therapeutic effect in searching the nasal cut ends and anastomosing the lacerated lacrimal canaliculus. Methods： Eighty-seven patients （including 87 eyes） suffering from canalicular laceration were randomized into two groups： 41 patients treated with traditional pigtail probes （Group A） and 46 with modified pigtail probes （Group B）. During the reconstruction of the lacerated canaliculi, the traditional pigtail probe and the modified pigtail probe were used respectively to seek for the nasal cut ends of lacerated lacrimal canaliculi. Peripherally inserted central catheter （PICCTM） silicone tube with diameter of 0.95 mm was intubated as a stent for 4-6 months. The surgical outcomes were retrospectively analyzed after stent removal. Results： In Group B, the primary success rate of searching the nasal cut ends of lacerated lacrimal canaliculi was 93.48% （43/46） and the final success rate was 97.83% （45/46）. No false passage formed in Group B. Statistical sig- nificance was found between Group A and Group B as the primary success rates of searching the nasal cut ends （ x^2 = 10.522, P〈0.01） and the false passage forming rates were concerned （ x^2=4.704, P〈0.05）, whereas no significance was found between the two groups as the final success rates were concerned （ x^2=0.007, P〉0.05）. The mean time of searching the nasal cut ends of lacerated lacrimal canaliculi in Group B was （5.02±2.73） minutes and the mean time of operation was （33.90±4.84） minutes, and both were significantly shorter than those of Group A （t1=9.779, t2=10.700, P〈0.01）. The cure rate of Group B was 95.65%, though higher than that of Group A, no statistical significance was found （Z=-1.007, P〉0.05）. Totally, 2 patients （2.30%） were found to be absent of common canaliculus and underwent bicanalicular nasal intubation in the two groups. Conclusions： Pigtail probes are efficient and convenient apparatus for searching the nasal cut ends of the lacerated lacrimal canaliculi in the reconstruction of canalicular laceration. Necessary or proper modifications to the pigtail probes can minimize the risk of iatrogenic damages or complications and enhance the efficiency and therapeutic effect of canalicular repair.展开更多
基金Supported by National Science and Technology Support Plan during the Eleventh Five-year Plan(2006BAD01A08-02)Hubei Agricultural Innovation Program(2007-620-004-003)Special Fund for Modern Pig Production Technology Construction(NYCYTX-009)~~
文摘The combined selection index used in the breeding of new Yorkshire dam line with high prolificacy according to breeding objects was formulated as /：2.272E- BVNB-0.056EBVDAYS. After 5 generations breeding, the two main selected traits such as total number of born and age at 100 kg weight was 12.17 piglets/litter and 165.18 d, respectively. The genetic improvements per generates was 0.156 and -2.198, respec- tively. The breeding objects of the new Yorkshire dam line with high prolificacy were basically reached. It indicated that the methods and index could be used in pig breeding.
文摘Objective： To investigate the necessity of modification to the traditional pigtail probe and evaluate its efficiency and therapeutic effect in searching the nasal cut ends and anastomosing the lacerated lacrimal canaliculus. Methods： Eighty-seven patients （including 87 eyes） suffering from canalicular laceration were randomized into two groups： 41 patients treated with traditional pigtail probes （Group A） and 46 with modified pigtail probes （Group B）. During the reconstruction of the lacerated canaliculi, the traditional pigtail probe and the modified pigtail probe were used respectively to seek for the nasal cut ends of lacerated lacrimal canaliculi. Peripherally inserted central catheter （PICCTM） silicone tube with diameter of 0.95 mm was intubated as a stent for 4-6 months. The surgical outcomes were retrospectively analyzed after stent removal. Results： In Group B, the primary success rate of searching the nasal cut ends of lacerated lacrimal canaliculi was 93.48% （43/46） and the final success rate was 97.83% （45/46）. No false passage formed in Group B. Statistical sig- nificance was found between Group A and Group B as the primary success rates of searching the nasal cut ends （ x^2 = 10.522, P〈0.01） and the false passage forming rates were concerned （ x^2=4.704, P〈0.05）, whereas no significance was found between the two groups as the final success rates were concerned （ x^2=0.007, P〉0.05）. The mean time of searching the nasal cut ends of lacerated lacrimal canaliculi in Group B was （5.02±2.73） minutes and the mean time of operation was （33.90±4.84） minutes, and both were significantly shorter than those of Group A （t1=9.779, t2=10.700, P〈0.01）. The cure rate of Group B was 95.65%, though higher than that of Group A, no statistical significance was found （Z=-1.007, P〉0.05）. Totally, 2 patients （2.30%） were found to be absent of common canaliculus and underwent bicanalicular nasal intubation in the two groups. Conclusions： Pigtail probes are efficient and convenient apparatus for searching the nasal cut ends of the lacerated lacrimal canaliculi in the reconstruction of canalicular laceration. Necessary or proper modifications to the pigtail probes can minimize the risk of iatrogenic damages or complications and enhance the efficiency and therapeutic effect of canalicular repair.
