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Changes in performance of traits mea...

Self, Raelye Taylor.

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Changes in performance of traits measured in performance tests on Rambouillet rams.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Changes in performance of traits measured in performance tests on Rambouillet rams./
作者:	Self, Raelye Taylor.
面頁冊數:	28 p.
附註:	Adviser: Mike W. Salisbury.
Contained By:	Masters Abstracts International45-05.
標題:	Agriculture, Animal Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1443504

Changes in performance of traits measured in performance tests on Rambouillet rams.
Self, Raelye Taylor.

Changes in performance of traits measured in performance tests on Rambouillet rams. - 28 p.

Adviser: Mike W. Salisbury.

Thesis (M.S.)--Angelo State University, 2007.

The objectives of this study were to estimate time trends in performance and time trends in variation in performance of Rambouillet rams on the Texas A&M performance test in Sonora, Texas at the Texas A&M Research Center. Traits that were analyzed were average daily gain, initial and final weight, staple length, average fiber diameter, clean fleece weight, and yield. Performance records from all years (over 10,000 Rambouillet rams) were used to estimate trends in performance and variation on performance. Regressions were estimated using the Mixed Procedure of SAS. SAS PROC MEANS was used to estimate within-year variances and SAS PROC REG was used to estimate the regression on year. The regressions of performance on year indicate significant responses in all traits except yield and fiber diameter. The trend in variances suggests that sufficient variation exists within the population to continue improvement into the future.Subjects--Topical Terms:

1021764
Agriculture, Animal Pathology.

Changes in performance of traits measured in performance tests on Rambouillet rams.
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100 1 $a Self, Raelye Taylor. $3 1272611
245 1 0 $a Changes in performance of traits measured in performance tests on Rambouillet rams.
300 $a 28 p.
500 $a Adviser: Mike W. Salisbury.
500 $a Source: Masters Abstracts International, Volume: 45-05, page: 2321.
502 $a Thesis (M.S.)--Angelo State University, 2007.
520 $a The objectives of this study were to estimate time trends in performance and time trends in variation in performance of Rambouillet rams on the Texas A&M performance test in Sonora, Texas at the Texas A&M Research Center. Traits that were analyzed were average daily gain, initial and final weight, staple length, average fiber diameter, clean fleece weight, and yield. Performance records from all years (over 10,000 Rambouillet rams) were used to estimate trends in performance and variation on performance. Regressions were estimated using the Mixed Procedure of SAS. SAS PROC MEANS was used to estimate within-year variances and SAS PROC REG was used to estimate the regression on year. The regressions of performance on year indicate significant responses in all traits except yield and fiber diameter. The trend in variances suggests that sufficient variation exists within the population to continue improvement into the future.
590 $a School code: 1291.
650 4 $a Agriculture, Animal Pathology. $3 1021764
690 $a 0476
710 2 $a Angelo State University. $3 1022135
773 0 $t Masters Abstracts International $g 45-05.
790 $a 1291
790 1 0 $a Salisbury, Mike W., $e advisor
791 $a M.S.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1443504