Global ETD Search

491	Corn and cob meal and cotton seed meal vs. bran for dairy cows Squires, John Houston January 1906 (has links) Master of Science LD5655.V855 1906.S685B Dairy cattle -- Feeding and feeds Corn as feed Cottonseed meal as feed Wheat as feed Feeds -- Fiber content
492	Genetic variance and covariance compenents for feed intake, average daily gain, and postweaning gain and indices to improve feed efficiency in growing beef cattle Retallick, Kelli June January 1900 (has links) Master of Science / Animal Sciences and Industry / Jennifer M. Bormann / Feed is the single most expensive cost related to beef cattle production. Currently a 70 d performance test is recommended for accurate calculation of efficiency. Previous research has suggested intake tests can be limited to 35 d. Objectives of this study were to estimate genetic parameters for growth and intake traits, compare two alternative indices for feed efficiency, and quantify the genetic response to selection for feed efficiency combining an intake test with two types of gain data. On–test average daily feed intake (ADFI), on-test average daily gain (ADG), and postweaning gain (PWG) records on 5,606 growing steers and heifers were obtained from the U.S. Meat Animal Research Center in Clay Center, NE. On-test ADFI and ADG data were collected from a minimum of 62 to 148 d testing days. Independent quadratic regressions were fitted for body weight on time, and on-test ADG was predicted from the resulting equations. PWG was calculated by subtracting adjusted 205-d weights from 365-d weights and dividing by 160. Genetic correlations were estimated using multiple trait animal mixed models with ADG, ADFI, and PWG for both sexes as dependent variables. The genetic correlations between ADG and PWG for both steers (0.81) and heifers (0.65) were strong. This indicates PWG is a strong proxy for ADG on-test and long test periods may not be necessary. Indices combining EBVs for ADFI and ADG and for ADFI and PWG were evaluated. For each index, the weighting of gain was arbitrarily set to 1.0 and the weighting for ADFI was the negative of the average of the intra-contemporary group ratio of mean gain divided by mean ADFI. Values were combined with EBV to compute two index values per animal. Pearson correlations for steers (0.96) and heifers (0.45) indicated a strong relationship for steers between the indices. Because more animals can be measured for intake, using PWG increases genetic progress of selection for feed efficiency by 15-17% per year. These findings support using PWG data in combination with ADFI to determine efficient animals, lessen costs, and increase annual feed efficiency genetic change. Feed efficiency Postweaning gain Beef cattle Animal Sciences (0475)
493	Feeding value of milo stover for growing beef heifers and lambs Grimes, Charles Robert January 2011 (has links) Digitized by Kansas Correctional Industries Stubble as feed Lambs-- Feeding and feeds. Beef cattle-- Feeding and feeds.
494	Effects of declawing and cage shape on productivity, feathering and fearfulness of egg-type layers Vanskike, Keith P January 2011 (has links) Typescript (photocopy). / Digitized by Kansas Correctional Industries Chickens--Housing Eggs--Production Chickens--Feed utilization efficiency
495	The effects of limit feeding finishing swine on performance and carcass measurements Zook, Warren Allen January 2011 (has links) Typescript (photocopy). / Digitized by Kansas Correctional Industries Animal nutrition Feed utilization efficiency
496	A study on the quality of whole stillage when damaged grains are used as feedstocks for alcohol production Fahrenholz, Charles H. January 2011 (has links) Typescript (photocopy). / Digitized by Kansas Correctional Industries Alcohol as fuel Alcohol--By-products--Evaluation Grain as feed
497	Labor productivity and employee incentive programs for commercial plants in the feed industry Kantor, Richard Valiant January 2011 (has links) Typescript (photocopy). / Digitized by Kansas Correctional Industries Feed industry--Labor productivity Incentives in industry--Evaluation Production managementCase studies
498	The effect of management option on the performance of pregnant feedlot heifers Simon, Michael Charles January 2011 (has links) Typescript (photocopy). / Digitized by Kansas Correctional Industries Heifers--Marketing Feedlots--Management
499	Soybean oil meal as a protein supplement in swine feeding rations Williams, John Calvin. January 1940 (has links) LD2668 .T4 1940 W51 / Master of Science Soybean as feed. Swine--Feeding and feeds. Masters theses
500	A study of the digestibility of sorghum silage and oat straw Dowe, Thomas Whitfield. January 1947 (has links) LD2668 .T4 1947 D68 / Master of Science Sorghum--Silage--Composition. Straw as feed. Digestion. Masters theses

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