1082 CYCLOPEDIA OF LIVE STOCK AND COMPLETE STOCK DOCTOR. 



What to do. — In order to accomplish this purpose a bare-lot system 

 was adopted. This consists simply in keeping the ewes with their lambs 

 on a plat of ground from which all grass or other green vegetation has 

 been removed. The lambs, therefore, have no temptation to pick up any- 

 thing from the ground and do not run the risk of infesting themselves 

 with the nodule-producing parasites which may be upon the ground. In 

 the experiments carried on at the Louisiana Station the ewes were fed 

 grain once a day, and a rack was provided for feeding green forage of 

 different kinds. All green forage which was pulled out of the rack by the 

 sheep was carefully removed from the feed lot each day. Fresh water was 

 always present in a wooden trough, and the feed lot was leveled so as to 

 prevent the accumulation of water in pools from which lambs might 

 drink. In this feed lot nine ewes were placed with six lambs, the lambs 

 being born in February and March. At the end of June, all lambs being 

 weaned, the ewes were slaughtered and all found to be infested with the 

 parasitic worms. The lambs were slaughtered and carefully examined at 

 ages varA'ing from 88 to 155 days. In three of these lambs two or three 

 nodules of minute size were found in the intestines. The others were 

 entirely free from nodules, but all six of the lambs were infested to a 

 greater or less extent with stomach worms. The infestation of stomach 

 worms, however, was not sufficient to influence perceptibly the develop- 

 ment and fattening of the lambs. It is difficult to understand how infesta- 

 tion with stomach worms took place. The bare-lot method appears, from 

 these experiments, to give promise as a means of raising lambs for market 

 at an early age from mothers infested with the nodule-producing parasite 

 without danger of serious infestation of the lambs. It is recommended 

 that in addition to maintaining the infested ewes with their lambs in a 

 bare lot the lambs should be given some vermifuge with their food, or at 

 least common salt, to assist in the removal of possible stomach worms. 



TROUGH FOR DIPPING LAMBS FOR SHEEP SCAB. 



