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Kansas Agricultural Experiment Station Research Reports

1996

Swine day

Articles 31 - 54 of 54

Full-Text Articles in Life Sciences

Evaluation Of The Total Sulfur Amino Acid Requirement Of Finishing Pigs (1996), J A. Loughmiller, J W. Smith Ii, J R. Bergstrom, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1996

Evaluation Of The Total Sulfur Amino Acid Requirement Of Finishing Pigs (1996), J A. Loughmiller, J W. Smith Ii, J R. Bergstrom, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Sixty four gilts (initially 120 lb) were used to evaluate the effects of increasing total sulfur amino acid (TSAA):lysine ratios on growth performance and carcass characteristics. Diets included two levels of lysine (.55% and .70% total lysine) and three TSAA:lysine ratios (60, 65, and 70% of lysine) arranged in a 2 x 3 factorial. A tendency for a lysine x TSAA interaction was observed for ADG and ADFI. Increasing TSAA:lysine ratio decreased ADG and ADFI in pigs fed .55% lysine; however, ADG and ADFI were increased in pigs fed .70% lysine and 65% TSAA:lysine. Pigs fed .70% lysine had improved …


The Effects Of Supplementing Growing-Finishing Pig Diets With Carnitine And(Or) Chromium On Growth And Carcass Characteristics (1996), J W. Smith Ii, B T. Richert, K Q. Owen, J R. Bergstrom, W B. Nessmith Jr, S A. Blum, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach Jan 1996

The Effects Of Supplementing Growing-Finishing Pig Diets With Carnitine And(Or) Chromium On Growth And Carcass Characteristics (1996), J W. Smith Ii, B T. Richert, K Q. Owen, J R. Bergstrom, W B. Nessmith Jr, S A. Blum, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Eighty crossbred gilts (initially 83 lb) were used to examine the effects of 50 ppm carnitine and(or) 200 ppb chromium from chromium nicotinate on growth performance and carcass characteristics. In this trial, adding carnitine and(or) chromiunm to the diets of high-lean growth finishing gilts did not increase carcass leanness. However, the combination of carnitine and chromium improved the color characteristics of the longissimus muscle.; Swine Day, Manhattan, KS, November 21, 1996


The Effects Of Porcine Reproductive And Respiratory Syndrome (Prrs) Vaccination On Postweaning Growth Performance (1996), S D. Pretzer, K M. Claussen, J R. Bergstrom, Steven C. Henry, R Phillips, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 1996

The Effects Of Porcine Reproductive And Respiratory Syndrome (Prrs) Vaccination On Postweaning Growth Performance (1996), S D. Pretzer, K M. Claussen, J R. Bergstrom, Steven C. Henry, R Phillips, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We evaluated the effects of a modified-live virus vaccine for PRRS virus on nursery growth performance. The pigs used in this study were obtained from a herd with substandard nursery growth performance attributed to PRRS virus infection. We failed to detect the presence of active circulating field strain virus in either the controls or vaccinated pigs. However, we did detect a strain similar to the vaccine virus strain on d 34 after weaning in the vaccinated pigs. The vaccinated pigs had poorer growth performance from d 7 to 14 after vaccination and were lighter in weight for the remainder of …


An Evaluation Of Several Diet Acidifiers Commonly Utilized In Pig Starter Diets To Improve Growth Performance (1996), J R. Bergstrom, J A. Loughmiller, R E. Musser, W B. Nessmith Jr, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband Jan 1996

An Evaluation Of Several Diet Acidifiers Commonly Utilized In Pig Starter Diets To Improve Growth Performance (1996), J R. Bergstrom, J A. Loughmiller, R E. Musser, W B. Nessmith Jr, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

Early-weaned pigs (weaned at 14 d of age) that are managed in a conventional one-site production system and fed a complex segregated early-weaning diet will benefit from the inclusion of a diet acidifier during the first week. However, the data indicate no benefit from including a diet acidifier in semicomplex diets fed during subsequent growth phases.; Swine Day, Manhattan, KS, November 21, 1996


Effects Of Different Specialty Protein Sources On Growth Performance Of Starter Pigs (1996), J C. Woodworth, R E. Musser, J A. Loughmiller, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1996

Effects Of Different Specialty Protein Sources On Growth Performance Of Starter Pigs (1996), J C. Woodworth, R E. Musser, J A. Loughmiller, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Two hundred and ten weanling pigs were fed diets containing either soybean meal, spray-dried blood meal, spray-dried red blood cells, select menhaden fish meal, or synthetic amino acids. From d 0 to 7 postweaning, pigs fed either spray-dried whole blood meal or red blood cells had greater ADG and ADFI than pigs fed select menhaden fish meal or added synthetic amino acids. However, from d °to 14 and 0 to 21, no differences in growth performance occurred among pigs fed the various protein sources. However, pigs fed added synthetic amino acids had poorer ADG compared with the mean for pigs …


Effects Of Split-Nursing Management On Growth Performance In Nursing Pigs (1996), T S. Donovan, Steven S. Dritz Jan 1996

Effects Of Split-Nursing Management On Growth Performance In Nursing Pigs (1996), T S. Donovan, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We evaluated the effects of split nursing the lightest 50% of pigs per litter or the lightest and heaviest 50% of pigs per litter at birth on growth performance until weaning. We did not observe any effects of split nursing on growth performance in pigs from litter sizes<9 at birth. Additionally, we did not observe a difference in mean ADG or pig weight at weaning. However, we did observe a reduction in the variation of ADG between litters. The resulting decrease in variation leads to approximately a 55% (1.3 vs 3.0) reduction in pigs weighing less than 8 lb at weaning. We conclude that the greatest economic benefits are derived from split nursing the lightest 50% of pigs from litter sizes greater than or equal to 9.; Swine Day, Manhattan, KS, November 21, 1996


The Effects Of Experimental Potato Protein On Starter Pig Growth Performance (1996), C A. Kerr, J R. Bergstrom, R E. Musser, W B. Nessmith Jr, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1996

The Effects Of Experimental Potato Protein On Starter Pig Growth Performance (1996), C A. Kerr, J R. Bergstrom, R E. Musser, W B. Nessmith Jr, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

This study suggested that experimental potato protein can be an effective replacement for a portion of spray-dried animal plasma in starter diets. Pigs fed combinations of experimental potato protein and spray-dried plasma had greater ADG than those fed either protein source alone. In phase II diets, pigs fed experimental potato protein had similar ADG and FIG compared with those fed spray-dried blood meal and select menhaden fish meal.; Swine Day, Manhattan, KS, November 21, 1996


The Effects Of Dietary Energy Density And Lysine:Calorie Ratio On The Growth Performance Of The 20 To 55 Lb Pig (1996), J W. Smith Ii, W B. Nessmith Jr, J R. Bergstrom, K Hongtrakul, J A. Loughmiller, R E. Musser, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1996

The Effects Of Dietary Energy Density And Lysine:Calorie Ratio On The Growth Performance Of The 20 To 55 Lb Pig (1996), J W. Smith Ii, W B. Nessmith Jr, J R. Bergstrom, K Hongtrakul, J A. Loughmiller, R E. Musser, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 336 barrows (initially 21.8 lb and 31 ± 2 d of age) was used to evaluate the results of increasing levels of choice white grease and lysine:calorie ratio on pig performance. Increasing levels of both choice white grease and lysine:calorie ratio improved the growth rate and efficiency of pigs fed from 20 to 55 lb.; Swine Day, Manhattan, KS, November 21, 1996


The Effect Of Ingredient Processing And Diet Complexity On Growth Performance Of The Segregated Early-Weaned Pig (1996), K Hongtrakul, J R. Bergstrom, I H. Kim, W B. Nessmith, Robert D. Goodband, Keith C. Behnke, Michael D. Tokach, Jim L. Nelssen Jan 1996

The Effect Of Ingredient Processing And Diet Complexity On Growth Performance Of The Segregated Early-Weaned Pig (1996), K Hongtrakul, J R. Bergstrom, I H. Kim, W B. Nessmith, Robert D. Goodband, Keith C. Behnke, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A 14-day growth trial was conducted to determine the interactive effects of ingredient processing and diet complexity on growth performance of segregated early-weaned pigs. Three processing combinations were used with either a simple or complex diet formulation in 2 x 3 factorial arrangement. Diets were pelleted (control); the corn was moist-extruded, then the complete diet pelleted (extruded); or the complete diet was expanded then pelleted (expanded). An interaction was observed between ingredient processing and diet complexity. Pigs fed the control or extruded diets had improved growth performance as diet complexity increased. However, pigs fed the expanded diets showed little response …


Evaluation Of Various Specialty Protein Sources As Replacements For Spray-Dried Animal Plasma In Diets For Segregated Early-Weaned Pigs (1996), W B. Nessmith Jr, J R. Bergstrom, J A. Loughmiller, J W. Smith Ii, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 1996

Evaluation Of Various Specialty Protein Sources As Replacements For Spray-Dried Animal Plasma In Diets For Segregated Early-Weaned Pigs (1996), W B. Nessmith Jr, J R. Bergstrom, J A. Loughmiller, J W. Smith Ii, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We used high-health status, weanling pigs to evaluate six different protein sources as replacements for spray-dried animal plasma. Spray-dried blood meal, spray-dried egg, spray-dried wheat gluten, extruded soy protein concentrate, select menhaden fish meal, and soybean meal each replaced 2.5 or 5.0% spray-dried animal plasma. Pigs fed increasing levels of spray-dried blood meal, spray-dried egg, or soybean meal had decreased ADFI; however, increasing levels of select menhaden fish meal, extruded soy protein concentrate, and spray-dried wheat gluten had no influence or increased ADFI. For the high-health pigs used in this trial, select menhaden fish meal, extruded soy protein concentrate, and …


Influence Of Lysine Concentration On Growth Performance And Carcass Characteristics Of Finishing Pigs (1996), Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 1996

Influence Of Lysine Concentration On Growth Performance And Carcass Characteristics Of Finishing Pigs (1996), Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We used a total of 11,653 pigs to examine the influence of a lysine phase-feeding regimen on growth performance and carcass characteristics in finishing pigs. We found that the lysine regimen did not affect ADG. Also, the low-lysine regimen was adequate for maximizing growth performance and carcass characteristics of barrows. However, the low-lysine regimen was inadequate to optimize feed efficiency in gilts. Further analysis indicated that the largest differences in feed efficiency were for the 115 to 160 lb period in gilts. Later in the growth period, feed efficiency of gilts was similar across dietary lysine regimens.; Swine Day, Manhattan, …


Effect Of Dietary L-Carnitine On Growth, Carcass Characteristics, And Metabolism Of Swine (1996), K Q. Owen, H Ji, C V. Maxwell, G C. Tremblay, S I. Koo, S A. Blum, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach Jan 1996

Effect Of Dietary L-Carnitine On Growth, Carcass Characteristics, And Metabolism Of Swine (1996), K Q. Owen, H Ji, C V. Maxwell, G C. Tremblay, S I. Koo, S A. Blum, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Thirty six Yorkshire gilts (initially 123 lb BW) were used to investigate the effect of dietary carnitine on growth performance, carcass characteristics, fatty acid oxidation, and enzyme kinetics. Dietary carnitine reduced fat deposition in favor of protein deposition, stimulated fatty acid oxidation, induced the expression of pyruvate carboxylase, increased the capacity of pyruvate carboxylase flux, and decreased the capacity of branch chain keto dehydrogenase.; Swine Day, Manhattan, KS, November 21, 1996


Influence Of Lysine Concentration On Growth Performance And Carcass Characteristics Of Finishing Pigs (1996), Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 1996

Influence Of Lysine Concentration On Growth Performance And Carcass Characteristics Of Finishing Pigs (1996), Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We used a total of 11,653 pigs to examine the influence of a lysine phase-feeding regimen on growth performance and carcass characteristics in finishing pigs. We found that the lysine regimen did not affect ADG. Also, the low-lysine regimen was adequate for maximizing growth performance and carcass characteristics of barrows. However, the low-lysine regimen was inadequate to optimize feed efficiency in gilts. Further analysis indicated that the largest differences in feed efficiency were for the 115 to 160 lb period in gilts. Later in the growth period, feed efficiency of gilts was similar across dietary lysine regimens.; Swine Day, Manhattan, …


The Impact Of Selected Hog Carcass Traits On Prices Received (1996), J Mintert, Steven S. Dritz, Ted C. Schroeder, S Hedges Jan 1996

The Impact Of Selected Hog Carcass Traits On Prices Received (1996), J Mintert, Steven S. Dritz, Ted C. Schroeder, S Hedges

Kansas Agricultural Experiment Station Research Reports

Hog producers can control the quality of the hogs they market. Through genetic selection and management, producers can have a large impact on hog carcass characteristics such as weight, backfat depth, and loin depth. Determining how much emphasis to place on changing or managing various carcass traits requires knowledge of the trait's value to the individual producer. Results from this study provide information on expected changes in price at one major midwestern packer associated with changes in carcass weight, backfat depth, and loin depth. Number of hogs marketed in each group did not affect net carcass value. However, these results …


Monthly Variation In Hog Carcass Traits (1996), J Mintert, Steven S. Dritz, Ted C. Schroeder, S Hedges Jan 1996

Monthly Variation In Hog Carcass Traits (1996), J Mintert, Steven S. Dritz, Ted C. Schroeder, S Hedges

Kansas Agricultural Experiment Station Research Reports

Little research has been conducted regarding the impact that time of year when hogs are marketed has on various carcass traits. This study examined monthly variation in a variety of hog carcass traits based upon 1995 slaughter summaries provided by a midwestern hog marketing network. Results indicate that carcass traits did indeed vary throughout the 1995 calendar year. However, given that these monthly variations were observed only during one year, it remains to be seen whether they indicate a seasonal relationship that hog producers can expect to see year after year or specific factors operative only in 1995. Additional years …


Effects Of Fat And Sodium Bicarbonate On Growth Performance And Stomach Morphology In Finishing Pigs (1996), S P. Sorrell, I H. Kim, Robert H. Hines, G A. Kennedy, L L. Burnham, Joe D. Hancock Jan 1996

Effects Of Fat And Sodium Bicarbonate On Growth Performance And Stomach Morphology In Finishing Pigs (1996), S P. Sorrell, I H. Kim, Robert H. Hines, G A. Kennedy, L L. Burnham, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Pigs fed diets with soybean oil consumed less feed; grew more efficiently; and had greater last-rib backfat thickness, keratosis, and ulceration in their stomachs than pigs fed diets without soybean oil. Pigs fed diets with NaHC03 tended to eat more feed and had numerically greater ADG, but feed/gain and carcass measurements were not affected. NaHC03 decreased ulceration scores only for pigs fed diets without added fat.; Swine Day, Manhattan, KS, November 21, 1996


The Effect Of Carbohydrate Source And Extrusion Processing On Growth Performance On Segregated Early-Weaned Pigs (1996), K Hongtrakul, J R. Bergstrom, I H. Kim, W B. Nessmith Jr, Robert D. Goodband, Keith C. Behnke, Michael D. Tokach, Jim L. Nelssen Jan 1996

The Effect Of Carbohydrate Source And Extrusion Processing On Growth Performance On Segregated Early-Weaned Pigs (1996), K Hongtrakul, J R. Bergstrom, I H. Kim, W B. Nessmith Jr, Robert D. Goodband, Keith C. Behnke, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A 21-day growth trial was conducted to determine the effect of various carbohydrate sources with or without moist extrusion processing on growth performance of segregated early-weaned pigs. Treatments included five different carbohydrate sources (corn, corn starch, rice, wheat flour, and grain sorghum) with or without moist extrusion processing in a 2 x 5 factorial arrangement. No interactions were observed among carbohydrate sources and extrusion processing. Growth performance was not improved by extrusion processing. Surprisingly, pigs fed corn had poorer growth performance compared to those fed other carbohydrate sources. These results suggest that corn starch, rice, wheat flour, and grain sorghum …


Evaluation Of The Total Sulfur Amino Acid Requirement Of Finishing Pigs (1996), J A. Loughmiller, J W. Smith Ii, J R. Bergstrom, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1996

Evaluation Of The Total Sulfur Amino Acid Requirement Of Finishing Pigs (1996), J A. Loughmiller, J W. Smith Ii, J R. Bergstrom, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Sixty four gilts (initially 120 lb) were used to evaluate the effects of increasing total sulfur amino acid (TSAA):lysine ratios on growth performance and carcass characteristics. Diets included two levels of lysine (.55% and .70% total lysine) and three TSAA:lysine ratios (60, 65, and 70% of lysine) arranged in a 2 x 3 factorial. A tendency for a lysine x TSAA interaction was observed for ADG and ADFI. Increasing TSAA:lysine ratio decreased ADG and ADFI in pigs fed .55% lysine; however, ADG and ADFI were increased in pigs fed .70% lysine and 65% TSAA:lysine. Pigs fed .70% lysine had improved …


Determination Of Contract Base Payments To Feeder-Pig Finishers (1996), J L. Parcell, Michael R. Langemeier Jan 1996

Determination Of Contract Base Payments To Feeder-Pig Finishers (1996), J L. Parcell, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

Risks associated with independent feeder-pig finishing have prompted finishers to seek alternative finishing and marketing methods. A means of reducing risk has developed through contract feeder-pig finishing. Research results indicated that slightly risk-averse finishers required contract base payments ranging from $11.00 to $30.00 per head. Strongly risk-averse finishers required contract base payments ranging from $8.50 to $19.00 per head. The lower end of the ranges is for a low-profit finisher. The upper end of the ranges is for a high-profit finisher.; Swine Day, Manhattan, KS, November 21, 1996


Omitting Vitamin And Trace Mineral Premixes, And(Or) Reducing Inorganic Phosphorus During Late Finishing Did Not Affect Growth Performance, Carcass Traits, Or Muscle Quality (1996), I Mavromichalis, Donald H. Kropf, G A. Kennedy, Robert H. Hines, B W. Senne, I H. Kim, S L. Johnston, Joe D. Hancock Jan 1996

Omitting Vitamin And Trace Mineral Premixes, And(Or) Reducing Inorganic Phosphorus During Late Finishing Did Not Affect Growth Performance, Carcass Traits, Or Muscle Quality (1996), I Mavromichalis, Donald H. Kropf, G A. Kennedy, Robert H. Hines, B W. Senne, I H. Kim, S L. Johnston, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Omitting the vitamin and trace mineral premixes and(or) adding 2/3 less supplemental inorganic phosphorus source (from .55% down to .40% total P) to diets during late finishing (191 to 265 lb) had no effect on growth performance, carcass characteristics, or muscle quality in high-lean pigs. Thus, this concept can be used to decrease the cost of feeding terminal-cross pigs to heavy weights, while decreasing excretion of minerals from intensive swine operations.; Swine Day, Manhattan, KS, November 21, 1996


Examination Of Pork Marketing Margins (1996), Ted C. Schroeder, J Mintert Jan 1996

Examination Of Pork Marketing Margins (1996), Ted C. Schroeder, J Mintert

Kansas Agricultural Experiment Station Research Reports

This study analyzes recent changes observed in pork, farm-to-wholesale and wholesale-to-retail, marketing margins. Although the inflation-adjusted, farm-to-wholesale margin has declined over the last 25 years, the wholesale-to-retail margin has increased. Pork producers need to know why these trends have occurred so they better understand pork marketing margin determinants as they develop policy positions and consider vertical marketing alliances.; Swine Day, Manhattan, KS, November 21, 1996


Effects Of High Oil Corn And Fat Level On Growth Performance Of Nursery Pigs (1996), J R. Bergstrom, C J. Samland, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband Jan 1996

Effects Of High Oil Corn And Fat Level On Growth Performance Of Nursery Pigs (1996), J R. Bergstrom, C J. Samland, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

Two studies were conducted to evaluate the effects of adding high oil corn to nursery diets as compared to other sources of fat. The results of both studies suggest that addition of fat to the nursery pig diet, regardless of the source, has no significant influence on growth performance until late in the nursery phase.; Swine Day, Manhattan, KS, November 21, 1996


Performance Of Weanling Pigs Fed Diets Containing Various Lactose Sources (1996), P R. O'Quinn, J R. Bergstrom, J A. Loughmiller, R E. Musser, W B. Nessmith Jr, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach Jan 1996

Performance Of Weanling Pigs Fed Diets Containing Various Lactose Sources (1996), P R. O'Quinn, J R. Bergstrom, J A. Loughmiller, R E. Musser, W B. Nessmith Jr, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Two growth trials were conducted to evaluate the effects of replacing the lactose provided by dried whey in the phase II diet with either deproteinized whey or an alternative lactose source, DairyLac 80®. No differences in performance observed among pigs fed diets containing 10% dried whey or deproteinized whey or DairyLac 80®. These trials indicate that deproteinized whey and DairyLac 80® can be used to replace the lactose contained in dried whey for starter pig diets.; Swine Day, Manhattan, KS, November 21, 1996


Increasing Valine, Isoleucine, And Total Branched Chain Amino Acids For The Lactating Sow (1996), B T. Richert, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1996

Increasing Valine, Isoleucine, And Total Branched Chain Amino Acids For The Lactating Sow (1996), B T. Richert, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

One hundred eighty-five sows were used to evaluate effects of the interrelationship between isoleucine and valine on sow and litter performance. Litter weight and weight gain at weaning increased as dietary valine, isoleucine, and total branched chain amino acids increased. Increasing dietary valine increased concentrations of milk DM and fat. Milk DM, CP, and fat increased as dietary isoleucine increased. Both valine and isoleucine increased litter weights. The independent increases in litter weaning weights from adding valine and isoleucine suggest separate modes of action in the lactating sow.; Swine Day, Manhattan, KS, November 21, 1996