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lf)o.lOOS NEW MEXICO COLLEGE OF AGRICULTURE AND MECHAltfC^Ts'^'''^1^ AND AGRICULTURAL EXPERIMENT STATION t%£v Press Bulletin 1009 \ 21 i'~ V LAMBFEEDING RATIONS ♦^ L f a „ „ . V ^i^>V;.e, f^V^rjfS?* Most lamb feeders when selecting rations for fattening lambs want to' know the following facts: 1. The best combination of available feeds. 2* The amount of each feed that a lamb requires each day. 3. The total amount of feed required for fattening. A. The average daily gain. 5. Cost of 1 pound of gain. Answers to these questions may be found from the results of tests conducted at the New Mexico Agricultural Experiment Station to determine the effectiveness of 67 feed combinations for fattening New Mexico range lambs. The combination of feeds in each ration, the amount that should be fed each day, the amount of each ration necessary for 1 pound of gain, and the gain in lamb weight each day are given in tabular form. The total amount of feed required and the cost of a pound of gain can be calculated from the rations as follows: If a fat lamb is" to weigh between 90 and 100 pounds (a desirable slaughter weight) on a midwestern or California market, it should weigh 95 to 108 pounds in the feed lot. The difference between this finished weight of 95 to 108 pounds and the weight of the feeder lamb when started on feed is the number of pounds that are to be gained in the feed lot. For example, if the feeder lamb weighs 70 pounds when put in the feed lot, it will need to gain about 30 pounds to have a 100pound weight when shipped from the feed lot. If the average daily gain is .3 pound, a 100day feeding period will be necessary. The feeder, therefore, can determine the necessary pounds of gain from his feeder lamb weight, select the ration he is going to feed, get the rate of daily gain stated for that ration, and from these two facts calculate the number of days he will need to feed. If he wants to determine the total feed required to fatten a lamb when a certain ration is used, he can multiply the amount of each feed needed for 1 pound of gain by the required nuaber of pounds as calculated above. Knowing the pounds of feed necessary for 1 pound of gain is useful in determining relative costs of different rations. This can be done by applying local feed prices to the required amounts of feed. In selecting a ration, the feeder must always keep in mind that a certain ;,iini mum rate of gain is necessary, blow which fattening will not be fast enough to properly condition the lamb for slaughter, regardless of the number of days fed. In these rations, a gain of less than .23 pound per day may be considered the minimum gain for proper fattening. All feed requirements and rates of daily gain given in the tables are based on feedlot weights and are higher than those based on buying weights and selling weights at the market. This does not make them any less reliable as guides for the feeder, but he must understand the basis of calculation so that he will not think the rates of gain as given are too high and therefore try to fatten lambs by using rations giving the same rates of gain as he has had when he his used buying and market selling weights to calculate average daily rate of gain. Due to the considerable variations in quality of the sane feeds, difference in feeder lambs, and difference in ability of different feeders, the rations may vary in fattening power as much as .04 pound in average daily gain.
Object Description
Title  Lambfeeding rations 
Series Designation  Press bulletin 1009 
Description  Press bulletin containing recommendations for formulating lamb rations for fattening. 
Subject  LambsFeeding and feeds; lambs (NAL); feed (NAL); 
Creator  Neale, P. E. (Philip Earle); 
Date Original  19450927 
Digital Publisher  New Mexico State University Library 
Rights  Copyright, NMSU Board of Regents. 
Collection  NMSU Cooperative Extension Service and Agricultural Experiment Station Publications 
Source  Scan produced from physical item held by the NMSU Library. 
Type  Text 
Format  image/tiff 
Language  eng 
Page Description
Title  Page 1 
Series Designation  Press bulletin 1009 
Subject  LambsFeeding and feeds; lambs (NAL); feed (NAL); 
Creator  Neale, P. E. (Philip Earle); 
Date Original  19450927 
Digital Publisher  New Mexico State University Library 
Rights  Copyright, NMSU Board of Regents. 
Collection  NMSU Cooperative Extension Service and Agricultural Experiment Station Publications 
Digital Identifier  UAAPp001009_001 
Is Part Of  Lambfeeding rations 
Source  Scan produced from physical item held by the NMSU Library. 
Type  Text 
Format  image/tiff 
Language  eng 
OCR  lf)o.lOOS NEW MEXICO COLLEGE OF AGRICULTURE AND MECHAltfC^Ts'^'''^1^ AND AGRICULTURAL EXPERIMENT STATION t%£v Press Bulletin 1009 \ 21 i'~ V LAMBFEEDING RATIONS ♦^ L f a „ „ . V ^i^>V;.e, f^V^rjfS?* Most lamb feeders when selecting rations for fattening lambs want to' know the following facts: 1. The best combination of available feeds. 2* The amount of each feed that a lamb requires each day. 3. The total amount of feed required for fattening. A. The average daily gain. 5. Cost of 1 pound of gain. Answers to these questions may be found from the results of tests conducted at the New Mexico Agricultural Experiment Station to determine the effectiveness of 67 feed combinations for fattening New Mexico range lambs. The combination of feeds in each ration, the amount that should be fed each day, the amount of each ration necessary for 1 pound of gain, and the gain in lamb weight each day are given in tabular form. The total amount of feed required and the cost of a pound of gain can be calculated from the rations as follows: If a fat lamb is" to weigh between 90 and 100 pounds (a desirable slaughter weight) on a midwestern or California market, it should weigh 95 to 108 pounds in the feed lot. The difference between this finished weight of 95 to 108 pounds and the weight of the feeder lamb when started on feed is the number of pounds that are to be gained in the feed lot. For example, if the feeder lamb weighs 70 pounds when put in the feed lot, it will need to gain about 30 pounds to have a 100pound weight when shipped from the feed lot. If the average daily gain is .3 pound, a 100day feeding period will be necessary. The feeder, therefore, can determine the necessary pounds of gain from his feeder lamb weight, select the ration he is going to feed, get the rate of daily gain stated for that ration, and from these two facts calculate the number of days he will need to feed. If he wants to determine the total feed required to fatten a lamb when a certain ration is used, he can multiply the amount of each feed needed for 1 pound of gain by the required nuaber of pounds as calculated above. Knowing the pounds of feed necessary for 1 pound of gain is useful in determining relative costs of different rations. This can be done by applying local feed prices to the required amounts of feed. In selecting a ration, the feeder must always keep in mind that a certain ;,iini mum rate of gain is necessary, blow which fattening will not be fast enough to properly condition the lamb for slaughter, regardless of the number of days fed. In these rations, a gain of less than .23 pound per day may be considered the minimum gain for proper fattening. All feed requirements and rates of daily gain given in the tables are based on feedlot weights and are higher than those based on buying weights and selling weights at the market. This does not make them any less reliable as guides for the feeder, but he must understand the basis of calculation so that he will not think the rates of gain as given are too high and therefore try to fatten lambs by using rations giving the same rates of gain as he has had when he his used buying and market selling weights to calculate average daily rate of gain. Due to the considerable variations in quality of the sane feeds, difference in feeder lambs, and difference in ability of different feeders, the rations may vary in fattening power as much as .04 pound in average daily gain. 