提高猪群繁殖效率的策略与方法

一、诱导母猪发情与发情检测 发情是后备母猪受胎能力和筛选的标记，是经产母猪受胎能力的标记，以及输精时间的标记。[第一段]     

News from the Scientific Organising Committee Learning new tricks to treat old dogs

Treating elderly pets and maximising your practice returns will be in focus at this year's AVA Annual Conference. The Scientific Organising Committee is delighted that such distinguished international and local speakers have agreed to give presentations in the Small Animal (Geriatric Medicine and Surgery) and Practice Management streams at the conference.
The AVA Conference will be at Hobart's Wrest Point Conference Centre from May 21–26, 2006. To see the full program and to register online visit www.ava.com.au/avaconference.     

Thoracoscopic pericardiotomy as a palliative treatment in a cow with pericardial lymphoma

A 5-year-old Holstein cow, pregnant with a valuable calf, was presented with signs of heart failure (tachycardia, peripheral edema, and distended jugular veins) related to pericardial lymphoma and associated cardiac tamponade. In addition, pleural effusion was present in both hemithoraces. Medical treatment, which consisted of repeated pericardiocenteses, placement of indwelling pleural catheters, administration of intravenous fluid therapy, antibiotics and anti-inflammatory drugs, was ineffective in controlling recurrence of clinical signs despite a temporary improvement. A standing thoracoscopic pericardiotomy was performed in an attempt to reduce clinical signs of heart failure and to prolong life. Clinical signs of heart failure abated and no recurrence was seen. Standing thoracoscopic pericardiotomy along with possible corticosteroids can be recommended as palliative treatment in an effort to extend life for reproductive performance in genetically valuable animals.