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Effect Of Finishing System And Animal Age On Carcass Traits And Nutritional Profile Of Bison Bulls, Clay Newton
Effect Of Finishing System And Animal Age On Carcass Traits And Nutritional Profile Of Bison Bulls, Clay Newton
Electronic Theses and Dissertations
The objectives of this thesis project were to 1) evaluate the influence of grain- and grass-finishing systems on carcass characteristics, proximate composition, nutritional profile, and fatty acid composition of bison bull meat, and 2) evaluate the influence of animal age on carcass characteristics of bison bulls. For objective 1, bison bulls were allowed to graze native range in north-central Nebraska until approximately 26 mo of age, when they were randomly assigned to either grain-finishing (n = 98; in an open lot with ad libitum access to prairie hay, alfalfa hay and corn for 95 d prior to slaughter) or grass-finishing …
Comparison Of Winter Cow Feeding Strategies On Offspring Performance And Meat Quality, E. Gubbels, K. Olson, J. Block, Z. Smith, R. Salverson, A. Harty, W. Rusche, J. Grubbs, K. Underwood, C. Wright, C. Schauer, D. Stecher, D. Drolc, A. Blair
Comparison Of Winter Cow Feeding Strategies On Offspring Performance And Meat Quality, E. Gubbels, K. Olson, J. Block, Z. Smith, R. Salverson, A. Harty, W. Rusche, J. Grubbs, K. Underwood, C. Wright, C. Schauer, D. Stecher, D. Drolc, A. Blair
SDSU Beef Day 2020 Summary Publication
The objective of this study was to investigate the effects of maternal prepartum dietary energy source (forage vs. concentrate) during mid- and late-gestation on offspring growth performance, carcass characteristics and meat quality.
Breed-Type And Mating System Effects On Beef Cattle Carcass Characteristics, D. M. Marshall
Breed-Type And Mating System Effects On Beef Cattle Carcass Characteristics, D. M. Marshall
South Dakota Beef Report, 1994
The effects of dam breed-type (Simmental x Hereford, Angus x Hereford, and Tarentaise x Hereford) and mating system (rotational versus rota-terminal) on carcass characteristics were evaluated. Means for dam breed-type and mating system were adjusted in separate analyses to one of three slaughter endpoints: 437-day slaughter age, 734-lb carcass weight, or .49 inches of carcass fat thickness. Calves from Simmental x Hereford dams had heavier carcasses compared to the other two dam breed-types when adjusted to a constant slaughter age or fat thickness. Calves from Angus x Hereford dams tended to have more external fat, smaller rib eye area, and …
Feedlot Performance And Carcass Traits Of Cull Cows Fed For Slaughter, R. H. Pritchard, P. T. Burg
Feedlot Performance And Carcass Traits Of Cull Cows Fed For Slaughter, R. H. Pritchard, P. T. Burg
South Dakota Beef Report, 1993
This trial was designed to evaluate how various factors impact the value added process of feeding cull cows. Specific management criteria evaluated included initial body condition, days on feed, implants, and cow age. Feedlot performance and carcass trait changes due to these factors were compared. Prolonging the feeding period from 50 to 77 or 105 days tended (P=.10) to increase average daily gain and dry matter intake (P<.01) and had no (P>.15) effect on feed/gain. This response is similar to short term adaptation and feeding of young cattle. Added days on feed increased (P<.001) dressing percentage, ribeye area, and ribfat thickness while decreasing (P<.001) lean age. Days on feed did not improve fat color. Older cows gained slower (P<.001) and were lighter muscled than young cows. Longer feeding periods progressively increased the number of high quality carcasses produced.
Genetic Parameters For Carcass Traits In Beef Cattle, D. M. Marshall
Genetic Parameters For Carcass Traits In Beef Cattle, D. M. Marshall
South Dakota Beef Report, 1993
The recent scientific literature was reviewed to summarize genetic parameters for carcass traits in beef cattle. Heritability estimates were generally moderate to large, in agreement with previous literature estimates. This suggests good potential for making change through genetic selection for a given individual carcass characteristic. However, genetic improvement through multiple-trait selection would be slowed by several important genetic antagonisms between traits, suggesting the use of terminal breeding systems with complementary sire and dam genetic types. Individual and maternal heterosis estimates from age-constant analyses were numerically positive and quite large for fat thickness and tended to be numerically positive and small …
Implant Strategies For Yearling Steers, R. H. Pritchard, M. A. Robbins
Implant Strategies For Yearling Steers, R. H. Pritchard, M. A. Robbins
South Dakota Beef Report, 1991
Various implant strategies were compared in heavy yearling steers fed for 98 days. Implant treatments included control (nonimplanted), 722 (72 mg zeranol), 36TBA (36 mg zeranol plus 140 mg trenbolone acetate [TBA]), 72TBA (72 mg zeranol plus TBA) and ETBA (20 mg estradiol-200 mg progesterone plus TBA). The 72-mg zeranol dosage represents two implants in one site. Combinations of implants were administered, one in each ear. Implanting increased (P<.05) ADG and DM1 and decreased (P<.05) feed/gain values. Among implanted steers, no differences (P>.10) in ADG or DM1 were observed. Feed/gain was lower (P< .05) for zeranol-TBA combinations than the 72-mg zeranol treatment. Carcasses were heavier and rib eye area was greater (P<.05) in the 72TBA than 36TBA treatment. Kidney-pelvic-heart fat was lower (P<.05) when the ETBA combination was used.
Effects Of Restricting Intake On Carcass Traits Of Young Steers, R. H. Pritchard, D. H. Gee, M. R. Robbins
Effects Of Restricting Intake On Carcass Traits Of Young Steers, R. H. Pritchard, D. H. Gee, M. R. Robbins
South Dakota Beef Report, 1989
Feedlot performance and carcass characteristics were compared when steer calves were fed energy dense diets ad libitum (AL) or restricted (RI) to achieve constant growth rates. AL steers grew more rapidly (P.e.10) than RI steers, 2.93 vs 2.74 Ib per head per day. For the period from 98 days to slaughter (AL = 89 days, RI = 99 days), AL steers consumed more dry matter daily than Rl steers. Restricting intake did not affect feed conversions or total dry matter consumed while in the feedlot. Steers were slaughtered at similar final weights. Intake level did not affect carcass weight, rib …
Characterization Of Hereford And Two-Breed Rotational Crosses Of Hereford With Angus And Simmental Cattle: Carcass Traits Of Steers, D.M. Marshall, M. D. Monfore, W. J. Costello, C. A. Dinkel
Characterization Of Hereford And Two-Breed Rotational Crosses Of Hereford With Angus And Simmental Cattle: Carcass Traits Of Steers, D.M. Marshall, M. D. Monfore, W. J. Costello, C. A. Dinkel
South Dakota Beef Report, 1989
Calf carcass traits were evaluated for Simmental (S) x Hereford (H) and Angus (A) x H cross cows in two-breed rotations and for straightbred H. Data were grouped into seven dam breed categories: straightbred Hereford (H), F1 S x H cows (SH), S x H cows of low percentage H (SHS), S x H cows of high percentage H (HSH), F1 A x H cows (AH), A x H cows of low percentage H (AHA) and A x H cows of high percentage H (HAH). Straightbred H and crossbred SH, AH, SHS and AHA cows were mated to H bulls, …
Effect Of Early Weaning On Feedlot Performance And Carcass Characteristics Of High Growth Potential Feeder Calves, R.H. Pritchard, M.A. Robbins, D.H Gee, R.J. Pruitt
Effect Of Early Weaning On Feedlot Performance And Carcass Characteristics Of High Growth Potential Feeder Calves, R.H. Pritchard, M.A. Robbins, D.H Gee, R.J. Pruitt
South Dakota Beef Report, 1988
Steer and heifer calves produced at Ft. Meade were used to evaluate early weaning and accelerated feeding as a management tool when retaining ownership of calves. Calves were weaned at 5 1/2 (EM) or 7 mo (NW) of age and started immediately on a 60% grain feeding program. Slaughter dates represented mean calf ages of 385 or 425 days and days on feed ranged from 179 to 257 days. Range conditions were good and early weaning had little effect on calf weight at any point in the feeding period. Feeding high grain diets to EW calves did not have any …
Feeding High Grain Diets To Steer Calves With Different Feedlot Arrival Weights, R.H. Pritchard
Feeding High Grain Diets To Steer Calves With Different Feedlot Arrival Weights, R.H. Pritchard
South Dakota Beef Report, 1987
Crossbred steer calves (384 head) were used in a 2-year study to determine the effects of feedlot arrival weight and diet concentrate levels on feedlot performance and carcass variables. Steers were separated into Light (434 lb), medium (486 lb) and heavy (533 lb) groups based upon weights when they arrived at the feedlot. A low energy (LE) corn silage receiving and growing system was compared with a high energy (HE) system that involved feeding relatively higher levels of grain during receiving and growing periods. Calves were fed to similar fatness endpoints. Rate of gain was similar for weight groups, but …
Effects Of Anabolic Implants On Reproductive Function, Carcass Characteristics And Performance In Postweaned Beef Bulls, S.J. Gordon, H.L. Miller, D.H. Gee, B.A. Petithean
Effects Of Anabolic Implants On Reproductive Function, Carcass Characteristics And Performance In Postweaned Beef Bulls, S.J. Gordon, H.L. Miller, D.H. Gee, B.A. Petithean
South Dakota Beef Report, 1986
Angus bulls averaging 620 lb were used to study the effects of implants on performance, carcass characteristics and reproductive parameters of intact males. Sixty-six bulls were randomly assigned to four treatments. These treatments were (1) nonimplanted, (2) implanted with 36 mg of Ralgro every 60 t o 70 days, (3) implanted with 220 mg of Synovex-S every 60 t o 70 days, (4) implanted with 24 mg of Compudose every 180 days. Body weights were taken a t the initiation of the trial and every 28 days. Blood samples were collected v i a jugular venipuncture weekly for 9 weeks …