Browsing by Author "Dritz, S.S."

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Browsing by Author "Dritz, S.S."

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  • Predicting lysine requirements using protein and lipid accretion curves for growing-finishing gilts
    De La Llata, M.; Dritz, S.S.; Tokach, M.D.; Goodband, R.D.; Nelssen, J.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1999)
    A total of240 growing-finishing gilts (60 to 260 lb) was used to model accretion rates and the lysine:calorie ratio requirement based on lipid and protein growth. Real-time ultrasound measurements were used to estimate lipid ...
  • The relationship between body condition score and backfat in gestating sows
    Young, M.G.; Tokach, M.D.; Goodband, R.D.; Nelssen, J.L.; Dritz, S.S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2001)
    Backfat and body condition score were measured on 731 sows in a commercial swine facility to assess the accuracy of feeding sows in gestation based on body condition score. Body condition score was poorly correlated (r2 ...
  • A review of oxytocin use for sows and gilts
    Linneen, S.K.; Benz, J.M.; Dritz, S.S.; DeRouchey, J.M.; Goodband, R.D.; Tokach, M.D. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2005)
    Oxytocin is frequently used to decrease farrowing time and birth interval as an aid to prevent stillbirths, but recent research has shown that oxytocin use can increase the number of pigs stillborn when used too early in ...
  • Sensory characteristics of loins from pigs fed glycerol and ractopamine HCl during the last 28 days of finishing
    Duttlinger, A.W.; Houser, T.A.; DeRouchey, J.M.; Tokach, M.D.; Dritz, S.S.; Nelssen, J.L.; Goodband, R.D.; Prusa, K.J.; Huskey, L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2009)
    Sensory characteristics were evaluated on a total of 80 loins from pigs fed diets containing glycerol, ractopamine HCl (RAC), and a combination of glycerol and RAC during the last 28 d prior to harvest. A total of 1,054 ...
  • Sorting growing-finishing pigs by weight fails to improve growth performance or weight variation
    O’Quinn, P.R.; Dritz, S.S.; Goodband, R.D.; Tokach, M.D.; Swanson, J.C.; Nelssen, J.L.; Musser, R.E. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2000)
    A trial was conducted to determine the effects of sorting pigs by body weight at placement on growth performance and weight variation at finishing. Unsorted pigs and heavy sorted pigs had higher ADG than medium or light ...
  • Soybean meal is necessary in diets for early-weaned (12 d of age) pigs
    Dritz, S.S.; Tokach, M.D.; Nelssen, J.L.; Goodband, R.D.; Owen, K.Q. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1993)
    A total of 192 pigs (initially 8.0 lb and 12 d of age) was used to determine the optimal soybean meal level to be included in starter diets for the 12-d-old weaned pig. The trial was a 28 d growth assay. Pigs were allotted ...
  • Spray-dried egg protein in diets for early-weaned starter pigs
    Owen, K.Q.; Nelssen, J.L.; Tokach, M.D.; Goodband, R.D.; Dritz, S.S.; Kats, L.J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1993)
    A total of 197 weanling pigs (initially 11.7 lb and 18 d of age) was used in a 28 d growth trial to determine the influence of spray-dried egg protein as a protein substitute for either soybean meal or spray-dried porcine ...
  • Supplementation of L-carnitine and paylean improve growth performance of pigs in a commercial finishing facility
    James, B.W.; Tokach, M.D.; Goodband, R.D.; Nelssen, J.L.; Dritz, S.S.; Owen, K.Q.; Woodworth, J.C. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2002)
    Our previous experiments evaluating the interactive effects of dietary L-carnitine and Paylean have primarily focused on improved meat quality benefits of feeding carnitine in combination with Paylean. Although there were ...
  • Use of dried distillers grains with solubles and soybean hulls in nursery pig diets
    Barbosa, F.F.; Dritz, S.S.; Tokach, M.D.; DeRouchey, J.M.; Goodband, R.D.; Nelssen, J.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2008)
    A total of 3,186 pigs were used in two 21-d experiments to evaluate growth performance of nursery pigs fed different levels of dried distillers grains with soluble (DDGS) or soybean hulls. In each experiment, pigs (n = ...
  • Use of dried distiller’s grains with soluble for swine diets
    Hastad, C.W.; Tokach, M.D.; Nelssen, J.L.; Goodband, R.D.; Dritz, S.S.; DeRouchey, J.M.; Groesbeck, C.N.; Lawrence, K.R.; Lenehan, N.A.; Keegan, T.P. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2003)
    A large increase in the number of ethanol plants has lead to increased availability of dried distiller’s grains with solubles (DDGS). New plants also have improved processing techniques, which makes DDGS more attractive ...
  • Use of infrared thermography to evaluate differences in mean body surface temperature and radiant heat loss in growing pigs
    Loughmiller, J.A.; Spire, M.F.; Tokach, M.D.; Dritz, S.S.; Nelssen, J.L.; Goodband, R.D.; Hogge, S.B.; James, B.W. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2000)
    Eighty barrows were used in two experiments to determine the relationship between feed intake or dietary energy concentration and mean body surface temperature (MBST) and mean body surface radiant heat loss (MBSL) as ...
  • The use of real-time ultrasound to model the growth performance and lysine requirements of growing-finishing pigs on commercial farms
    Smith, J.W.II; Tokach, M.D.; Schinckel, A.P.; Dritz, S.S.; Nelssen, J.L.; Goodband, R.D. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1996)
    Eighty pigs, 40 barrows and 40 gilts, on two commercial finishing operations were used to model growth and accretion rates. Major differences were observed between the two farms. This analysis indicates that realtime ...
  • The use of real-time ultrasound to model the growth performance and lysine requirements of growing-finishing pigs on commercial farms
    Smith, J.W.II; Tokach, M.D.; Schinckel, A.P.; Dritz, S.S.; Nelssen, J.L.; Goodband, R.D. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1996)
    Eighty pigs, 40 barrows and 40 gilts, on two commercial finishing operations were used to model growth and accretion rates. Major differences were observed between the two farms. This analysis indicates that real-time ultrasound ...
  • Using heart girth to determine weight in finishing pigs
    Groesbeck, C.N.; Goodband, R.D.; DeRouchey, J.M.; Tokach, M.D.; Dritz, S.S.; Nelssen, J.L.; Lawrence, K.R.; Young, M.G. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2002)
    Heart girth and body weight were measured on 100 growing-finishing pigs (50 to 273 lb) at the KSU Swine Teaching and Research Center. Heart girth, in inches, was measured using a cloth measuring tape. The tape was placed ...
  • Using mixer efficiency testing to evaluate feed segregation in feed lines
    Groesbeck, C.N.; Goodband, R.D.; Tokach, M.D.; Nelssen, J.L.; Dritz, S.S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2004)
    An experiment was conducted to evaluate potential diet segregation in feed lines by measuring coefficient of variation (CV) and mean salt concentration. The facility was a 1500-head gestation barn with nine feed lines, ...
  • Utilizing vaccination for Porcine Circovirus Type 2 as a tool to aid elimination of PCV2 from swine populations
    Potter, M.L.; Dritz, S.S.; Hesse, R.A.; Rowland, R.R.R.; Nietfield, J.C.; Oberst, R.; Henry, S.C.; Tokach, L.M.; Hays, M.; Fuller, A.; Straw, B.E.; Bates, R.O. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2011)
    A total of 928 pigs from the Swine Teaching and Research Centers at Michigan State University (MSU) and Kansas State University (KSU) and a Kansas commercial farm were used during a 3-year study to determine whether ...
  • Validation of control diets for lactose and fish meal replacement studies in nursery pigs
    Sulabo, R.C.; Tokach, M.D.; DeRouchey, J.M.; Goodband, R.D.; Dritz, S.S.; Nelssen, J.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2008)
    The objective of this study was to develop and validate control test diets to be used for lactose and fish meal replacement studies in nursery pigs. A total of 180 nursery pigs (PIC, initially 16.6 lb and 28 ± 2 d of age) ...
  • Validation of flank-to-flank allometric equations in predicting weight of lactating sows and lactation weight change
    Sulabo, R.C.; Tokach, M.D.; Dritz, S.S.; Wiedmann, E.J.; Goodband, R.D.; DeRouchey, J.M; Nelssen, J.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2007)
    The objectives of this study were to validate the use of flank-to-flank measurement in predicting weight of lactating sows and to determine the accuracy of the developed models in estimating lactation weight change. A total ...
  • Validation of flank-to-flank measurements for predicting boar weight
    Sulabo, R.C.; Quackenbush, J.; Goodband, R.D.; Tokach, M.D.; Dritz, S.S.; DeRouchey, J.M.; Nelssen, J.L (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2006)
    Allometric relationships, in which linear body dimensions are expressed as a function of body weight, are commonly used in growth studies. Previous work at Kansas State University showed a positive correlation between ...
  • Variation in chemical composition of soybean hulls
    Barbosa, F.F.; Tokach, M.D.; DeRouchey, J.M.; Goodband, R.D.; Nelssen, J.L.; Dritz, S.S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2008)
    The objective of this study was to examine the variation in chemical composition of soybean hulls. Our goal was to develop regression equations characterizing the nutritive value of soybean hulls for use in swine diets. ...