Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Journal

Kansas Agricultural Experiment Station Research Reports

1997

Discipline
Keyword

Articles 61 - 80 of 80

Full-Text Articles in Life Sciences

Effects Of Starch Gelatinization On Weanling Pig Performance (1997), K Hongtrakul, J R. Bergstrom, W B. Nessmith Jr, I H. Kim, Robert D. Goodband, Keith C. Behnke, Jim L. Nelssen, Michael D. Tokach Jan 1997

Effects Of Starch Gelatinization On Weanling Pig Performance (1997), K Hongtrakul, J R. Bergstrom, W B. Nessmith Jr, I H. Kim, Robert D. Goodband, Keith C. Behnke, Jim L. Nelssen, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Two hundred and ten weanling pigs were fed diets containing nonextruded corn (14.5% gelatinization; control) or corn that was extruded to provide 38.7%, 52.7%, 64.4%, or 89.3% starch gelatinization in the complete diet. With increasing gelatinization, ADG and ADFI decreased and then increased. but apparent digestibility of DM, CP, and energy increased then decreased. These results suggest that the degree of starch gelatinization has an inconsistent effect on weanling pig performance.; Swine Day, Manhattan, KS, November 20, 1997

Go to article

Effects Of Time Of Introduction And Level Of Soybean Meal On Performance Of Segregated Early-Weaned Pigs (1997), P R. O'Quinn, J R. Bergstrom, J A. Loughmiller, K Hongtrackul, R E. Musser, C A. Civis, C J. Maxwell, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband Jan 1997

Effects Of Time Of Introduction And Level Of Soybean Meal On Performance Of Segregated Early-Weaned Pigs (1997), P R. O'Quinn, J R. Bergstrom, J A. Loughmiller, K Hongtrackul, R E. Musser, C A. Civis, C J. Maxwell, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

A growth trial was conducted utilizing segregated early weaned (SEW) pigs to evaluate the effects of time of introduction and level of soybean meal on growth performance. Few differences were observed in growth performance indicating that including up to 40% soybean meal in the diet will not adversely affect growth of high-health status, SEW-reared pigs.; Swine Day, Manhattan, KS, November 20, 1997

Go to article

Determining The Optimal Tryptophan:Lysine Ratio For The Segregated Early-Weaned Pigs (25 To 50 Lb) (1997), J A. Loughmiller, D A. Knabe, K Hongtrakul, S Moser, C Civis, P R. O'Quinn, J W. Smith Ii, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband Jan 1997

Determining The Optimal Tryptophan:Lysine Ratio For The Segregated Early-Weaned Pigs (25 To 50 Lb) (1997), J A. Loughmiller, D A. Knabe, K Hongtrakul, S Moser, C Civis, P R. O'Quinn, J W. Smith Ii, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

A 21 d growth trial was conducted to evaluate the effects of increasing the apparent digestible tryptophan:lysine ratio on growth performance of the 25 to 50 lb pig raised in a high-health, segregated early-weaning (SEW) system. Ten diets were fed with two levels of lysine (.75% and 1.10% apparent digestible lysine) and five apparent digestible tryptophan levels (13, 16, 19, 22, or 25% of lysine). Feeding the high dietary lysine consistently improved ADG and FIG and reduced ADFI. Increasing the tryptophan: lysine ratio did not improve overall performance. Based upon our results, the dietary tryptophan level to maximize growth performance …

Go to article

Influence Of Dietary Tryptophan Levels On The Growth Performance Of Segregated Early-Weaned Pigs (10 To 20 Lb) (1997), J A. Loughmiller, D A. Knabe, K Hongtrakul, P R. O'Quinn, S Moser, J W. Smith Ii, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach Jan 1997

Influence Of Dietary Tryptophan Levels On The Growth Performance Of Segregated Early-Weaned Pigs (10 To 20 Lb) (1997), J A. Loughmiller, D A. Knabe, K Hongtrakul, P R. O'Quinn, S Moser, J W. Smith Ii, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

A total of 360 pigs (averaging 13 d of age and 9.4 lb) was used to determine the effects of increasing dietary tryptophan:lysine ratio on the growth performance of segregated early-weaned (SEW) pigs. Two apparent digestible lysine levels (1. 15 and 1.50 %) and six apparent digestible tryptophan: lysine ratios (12.5, 15, 17.5, 20, 22.5 and 25%) were fed from d 0 to 16 after weaning. Lysine x tryptophan interactions were observed for ADG and F/G. Increasing the tryptophan: lysine ratio in the low lysine diets improved ADG and F/G in a quadratic manner. Increasing the tryptophan level had no …

Go to article

Effects Of Increased Feed Intake Or Additional Corn From Day 30 To 50 Of Gestation On Performance Of Sows And Growth Performance And Carcass Characteristics Of Offspring (1997), R E. Musser, J S. Bauman, M Heintz, Robert D. Goodband, Duane L. Davis, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 1997

Effects Of Increased Feed Intake Or Additional Corn From Day 30 To 50 Of Gestation On Performance Of Sows And Growth Performance And Carcass Characteristics Of Offspring (1997), R E. Musser, J S. Bauman, M Heintz, Robert D. Goodband, Duane L. Davis, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 321 PIC sows was used to determine the effects of either increased feed (8 Ib/d of complete feed) or added corn (4 Ib/d of complete feed plus 4 Ib/d of ground corn) from d 30 to 50 of gestation on sow and offspring performance. Sows fed increased feed intake from d 30 to 50 of gestation had fewer pigs born live than control sows; however this decrease was not observed for sows fed ground corn. Increased complete diet feed intake from d 30 to 50 of gestation resulted in heavier offspring at slaughter, with offspring from sows …

Go to article

Trends In The Swine Industry: Operations And Marketings (1997), J L. Parcell, Kevin C. Dhuyvetter Jan 1997

Trends In The Swine Industry: Operations And Marketings (1997), J L. Parcell, Kevin C. Dhuyvetter

Kansas Agricultural Experiment Station Research Reports

Trends in the size of swine operations in Kansas and the V. S. are toward fewer and larger operations. The number of operations in Kansas and the U.S. continues to decline; however, the number of hogs marketed has increased because of an increase in operation size. Kansas producers have increased operation size at a slower rate compared to U.S. producers. Kansas ranks tenth nationally in hogs marketed. A migration of swine production from eastern, central, and northern Kansas to southwest Kansas has occurred in the past 5 years.; Swine Day, Manhattan, KS, November 20, 1997

Go to article

Historical Economic Returns To Alternative Swine Enterprises In Kansas (1997), R Jones, Michael R. Langemeier Jan 1997

Historical Economic Returns To Alternative Swine Enterprises In Kansas (1997), R Jones, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

This study examines historical net returns to average Kansas swine producers over the past 16 years. Swine production has been a profitable enterprise. As expected, average returns per head have been higher for farrow-to-finish producers than for feeder pig finishers, and farrow-to-finish producers have nearly always been able to at least cover variable costs of production.; Swine Day, Manhattan, KS, November 20, 1997

Go to article

K-State Turfgrass Research 1997, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 1997

K-State Turfgrass Research 1997, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

With our staff at full strength, several new research projects have been initiated for the 1997 season. As always, we are anxious to hear your suggestions for research that can be done to improve our ability to maintain healthy turf in Kansas.

Go to article

Atp Bioluminescence Can Evaluate Cleaning And Sanitizing Effectiveness In The Milking Parlor (1997), M. J. Meyer, Karen A. Schmidt Jan 1997

Atp Bioluminescence Can Evaluate Cleaning And Sanitizing Effectiveness In The Milking Parlor (1997), M. J. Meyer, Karen A. Schmidt

Kansas Agricultural Experiment Station Research Reports

Four areas of the milking parlor were evaluated for effective cleaning and sanitation using total aerobic counts (standard plate count) and ATP bioluminescence (ATPB) techniques. Whereas the plate counts only monitor bacterial numbers, the ATPB results (reported as relative light units, RLU) also indicate residual soil or food residue on the surface. Results showed little correlation between the RLU values and the aerobic plate count data; however, the ATP bioluminescence system is a fast (<2>min) and simple method that evaluates the effectiveness of cleaning and sanitation procedures employed.; Dairy Day, 1997, Kansas State University, Manhattan, KS, 1997;

Go to article

Puberty Induction In Young Gilts: Ovarian, Uterine, And Pregnancy Responses (1997), J Guo, David M. Grieger, Duane L. Davis Jan 1997

Puberty Induction In Young Gilts: Ovarian, Uterine, And Pregnancy Responses (1997), J Guo, David M. Grieger, Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

The age of gilts when their first litter is produced affects reproductive efficiency and the applications of biotechnologies such as in vitro fertilization and genetic engineering. Therefore, we evaluated the effect of age on response to puberty induction in gilts. Gilts were injected with PG600® followed 96 h later with human chorionic gonadotropin to induce follicular growth and ovulation, respectively. In the first experiment, 84-, 104-,124-, 144-, and 164-d-old gilts were used. For treated gilts, uterine weight, uterine length, number of corpora lutea (CL), peripheral progesterone (P4), and estradiol (~) increased (P<.05) linearly with age. Uterine luminal prostaglandins (PGs) PGE and PGF decreased for gilts treated at 124 d of age or older. The second experiment evaluated pregnancy success for gilts induced to ovulate at 116 vs 151 d of age. The effects of induction of two consecutive estrous cycles also were evaluated. Two of seven (28.6%) and four of nine (44.4%) gilts first treated when 116 and 151 d old but none of seven gilts treated at both 96 and 116 d of age were pregnant 60 d postinseillination. Results indicated that induction of a prior cycle did not inlprove pregnancy rates. However, some gilts in this population maintained pregnancies to 60 d when induced to ovulate and inseminated at 120 d of age.; Swine Day, Manhattan, KS, November 20, 1997

Go to article

Conception And Pregnancy Rates In Dairy Cows After Various Programmed Breeding Systems (1997), Jeffrey S. Stevenson, K. E. Thompson, Y. Kobayashi Jan 1997

Conception And Pregnancy Rates In Dairy Cows After Various Programmed Breeding Systems (1997), Jeffrey S. Stevenson, K. E. Thompson, Y. Kobayashi

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to measure conception and pregnancy rates in lactating dairy cows after various treatments followed by artificial insemination (AI) after detected estrus or at one fixed time. In Experiment 1, Holstein cows in one herd were assigned randomly to four treatments every 3 wk (27, 3-wk cluster groups): 1)Ovsynch33, 2) GnRH+PGF2α, 3) 2xPGF2α, and 4) 2xPGF2α+GnRH. In Experiment 2, Holstein cows in one herd were assigned randomly to two treatments every 3 wk (14, 3-wk cluster groups): 1) Ovsynch48 and 2) GnRH+PGF2α. In both experiments, frozen-thawed semen from multiple sires was used, one technician performed>95% of …

Go to article

Ultrasound Versus Convection Cooking Of Beef Longissimus And Pectoralis Muscles, F.W. Pohlman, J.F. Zayas, Michael E. Dikeman, John A. Unruh Jan 1997

Ultrasound Versus Convection Cooking Of Beef Longissimus And Pectoralis Muscles, F.W. Pohlman, J.F. Zayas, Michael E. Dikeman, John A. Unruh

Kansas Agricultural Experiment Station Research Reports

Longissimus and pectoralis muscles were removed from 10 steer carcasses at 4 days postmortem , aged for 14 days at 4 ÌŠF, then assigned to either ultrasound (ULS) or convection (Conv) cooking to either 144 or 15 8 ÌŠF internal temperature. Ultrasound cooking was faster (P<.05), had greater (P<.05) moisture retention and less (P<.05) cooking loss, and used less energy (P<.05). It also produced muscle samples that required less (P<.05) peak force to shear than those from Conv cooking and resulted in superior (P<.05) myofibrillar tenderness. No significant interactions occurred among cooking method, muscle, or endpoint temperature. As expected, longissimus (ribeye) muscles cooked faster (P<.05) and required less (P<.05) energy and were superior (P<.05) in instrumentally measured texture and sensory tenderness than pectoralis muscles. Cooking to 158EF caused greater (P<.05) moisture and cooking losses, required more (P<.05) time and energy, and degraded (P<.05) instrumental textural and sensor y characteristics. Ultrasound offers a new cooking mode that could increase cooking speed, improve energy efficiency and improve some textural characteristics, compared to conventional cooking.

Go to article

Estrus Detection, First Service Conception, And Embryonic Death In Beef Heifers Synchronized With Mga And Prostaglandin, G.C. Lamb, B.L. Miller, V. Traffas, L.R. Corah Jan 1997

Estrus Detection, First Service Conception, And Embryonic Death In Beef Heifers Synchronized With Mga And Prostaglandin, G.C. Lamb, B.L. Miller, V. Traffas, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

In April, 1996, 1501 yearling crossbred heifers located on seven different ranches were estrus-synchronized and artificially inseminated (AI) 12 hours after they were detected in estrus. Herd size ranged from 82 to 43 9 head. Of the 1501 heifers, 86.1% were detected in estrus. First service conception rates of those 1292 heifers averaged 58.4% (40.3 to 68.8%). In three herds, ultrasonography was used to diagnose 525 heifers as pregnant at 30 days after AI. At 60 to 90 days after the breeding season, palpation of the uterus confirmed that embryonic death had occurred in 4.2% (4.0 to 4.8%). First service …

Go to article

Freestall Design And Management For Cow Comfort (1997), John F. Smith, G. A. Jones, Joseph P. Harner Jan 1997

Freestall Design And Management For Cow Comfort (1997), John F. Smith, G. A. Jones, Joseph P. Harner

Kansas Agricultural Experiment Station Research Reports

The design and management of freestall 4) air or vision. facilities are critical in maintaining cow comfort and high milk production. Dairy produc- Lunge Space ers should be conscious of the factors affecting cow comfort in freestall facilities. These The first reason a freestall may fail is lack factors include: ventilation, water availability, of lunge space. A cow needs forward or side feed availability, stall design, and stall bed- lunge space to maneuver in and out of the stall ding. Dairy producers should strive to have easily. There should be no obstructions in lactating cows standing to be milked; standing …

Go to article

Steam Pasteurization To Reduce Bacterial Populations On Commercially Slaughtered Beef Carcasses, D.E. Schafer, Curtis L. Kastner, Randall K. Phebus, Abbey L. Nutsch Jan 1997

Steam Pasteurization To Reduce Bacterial Populations On Commercially Slaughtered Beef Carcasses, D.E. Schafer, Curtis L. Kastner, Randall K. Phebus, Abbey L. Nutsch

Kansas Agricultural Experiment Station Research Reports

A steam pasteurization system (SPS) has been shown in laboratory and commercial evaluations to effectively reduce bacterial populations on freshly slaughtered beef. Our study evaluate d the bactericidal uniformity of SPS. Samples were collected from the five anatomical locations, one per carcass, 40 samples per location , so that 200 carcasses were evaluated before and 200 after pasteurization. Each carcass was sampled by wiping a 300 c m2 area of the specified location with a moist, sterile sponge. For all locations, the total aerobic plate count (APC) after pasteurization was lower (P#.01). Before pasteurization, the midline was contaminate d most …

Go to article

The Effect Of Vitamin E, Selenium, And Copper Supplementation Preweaning On The Performance And Immune Response Of Beef Calves, C.L. Wright, L.R. Corah, Gerald L. Stokka, Frank Blecha, G. Lynch Jan 1997

The Effect Of Vitamin E, Selenium, And Copper Supplementation Preweaning On The Performance And Immune Response Of Beef Calves, C.L. Wright, L.R. Corah, Gerald L. Stokka, Frank Blecha, G. Lynch

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effect of vitamin E, selenium, and copper supplementation on the pre- and postweaning performance, immune responses, and serum metabolites o f crossbred beef calves. In experiment 1, 71 calves were blocked by weight and allotted to one of four individually fed treatments: 1) control supplement (2 lb grain creep ) (CS), 2) CS + .27 mg selenium + 500 IU vitamin E, 3) CS + 9.1 mg copper, and 4) combination of treatments 2 and 3. In experiment 2, 80 crossbred beef calves were blocked by weight and allotted to 5 individually fed …

Go to article

Summary Of Grazing Research On Kansas Crp Land, Michael R. Langemeier, P.D. Ohlenbusch, R.D. Jones Jan 1997

Summary Of Grazing Research On Kansas Crp Land, Michael R. Langemeier, P.D. Ohlenbusch, R.D. Jones

Kansas Agricultural Experiment Station Research Reports

Animal performance and n et return per acre were examined for four CRP research sites in Kansas in 1 994, 1995, and 1996. Both mowing and prescribed burning increased animal performance in 1994. Mowing was economically feasible on one of the four sites. Prescribed burning was economically feasible on three of four sites. Mowing and burning treatments were not repeated i n 1995 or 1996. Net returns per acre for the site that was grazed with cowcalf pairs ranged from -$8.55 to -$25.54. For the sites grazed with stockers, net returns per acre varied from -$18.67 to $31 .39. Net …

Go to article

Effect Of Supplement Strategy On Intake And Digestion Of Prairie Hay By Beef Steers, R.H. Greenwood, C.A. Loest, Evan C. Titgemeyer, James S. Drouillard Jan 1997

Effect Of Supplement Strategy On Intake And Digestion Of Prairie Hay By Beef Steers, R.H. Greenwood, C.A. Loest, Evan C. Titgemeyer, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

The effects of supple mental corn (4 lb/day), rumen-protected methionine (4.25 grams DL-methionine per day), or a cooked molasses block (1 lb/day) on intake and digestion of prairie hay were measured i n beef steers. Steers that consumed the cooked molasses block ate more forage than control steers, whereas forage intake was decreased by supplemental corn. Total tract organic matter digestion, expressed as a percent of intake, was numerically greatest for steers consuming the cooked molasses block. Digestible organic matter intake, a rough estimate of energy available to the steers, was unaffected by methionine but was increased by supplementation of …

Go to article

Effect Of Urea Level In Protein Supplements On Performance By Beef Cows Consuming Low-Quality, Tallgrass-Prairie Forage, B.C. Woods, R.C. Cochran, C.P. Mathis, J.S. Heldt, K. C. Olson, Evan C. Titgemeyer, David M. Grieger Jan 1997

Effect Of Urea Level In Protein Supplements On Performance By Beef Cows Consuming Low-Quality, Tallgrass-Prairie Forage, B.C. Woods, R.C. Cochran, C.P. Mathis, J.S. Heldt, K. C. Olson, Evan C. Titgemeyer, David M. Grieger

Kansas Agricultural Experiment Station Research Reports

One hundred thirty two Hereford x Angus cows grazing tallgrass-prairie range during winter were used to evaluate the effects of varying the amount of supplemental degradable intake protein (DIP) derived from urea on cow and calf performance. Treatment groups were: 0, 15, 30, and 45% of the supplemental DIP from urea. Supplements were formulated to contain 30% crude protein (CP), with approximately 70% of the CP being DIP. Palatability was not a significant problem within the range of urea inclusion tested. In general, prepartum weight and condition losses were greater with increasing levels of urea, although the magnitude of condition …

Go to article

Effect Of Bacterial Inoculants On The Fermentation And Preservation Efficiencies And Nutritive Value Of Alfalfa Silage For Growing Steers, K.K. Bolsen, G.L. Huck, M.K. Siefers, J.E. Turner, S.A. Anderson, J.S. Pendergraft, Matthew A. Young, Ronald V. Pope Jan 1997

Effect Of Bacterial Inoculants On The Fermentation And Preservation Efficiencies And Nutritive Value Of Alfalfa Silage For Growing Steers, K.K. Bolsen, G.L. Huck, M.K. Siefers, J.E. Turner, S.A. Anderson, J.S. Pendergraft, Matthew A. Young, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Two silage bacterial inoculants from Pioneer Hi-Bred International, Inc. were evaluated using second-cutting alfalfa. The Pioneer brand 1174® inoculant and a Pioneer experimental inoculant each increased the rate and efficiency of the ensiling process in both farm-scale and laboratory-scale silos. The two inoculants increase d the DM recovery in the farm-scale silos compared to the untreated silage. Steers fed the experimental inoculant-treated silage gained faster (P<. 10) (2.56 vs. 2.37 lb per day), had a 4.0% higher DM intake, and were 4.3% more efficient than steers fed the untreated silage. The 1174-treated silage supported a numerically but not statistically better steer performance than the control silage. When the DM recovery results were combined with the feed per gain results, the silages with 1174 and experimental inoculant produced 5.3 and 10.5 lb more steer gain per ton of crop ensiled, respectively, than the control silage.

Go to article

First Prev