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1989

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Articles 61 - 90 of 90

Full-Text Articles in Life Sciences

Evaluation Of Oral Escherichia Coli Bacterin And Water Medication On Performance Of Weaned Pigs (1989), D A. Schoneweis, R I. Nicholson, G E. Fitzner, Robert H. Hines Jan 1989

Evaluation Of Oral Escherichia Coli Bacterin And Water Medication On Performance Of Weaned Pigs (1989), D A. Schoneweis, R I. Nicholson, G E. Fitzner, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Odd-numbered pigs in new-born litters were vaccinated on d 1 with an oral Escherichia coli bacterin and their performance after weaning was compared with that of nonvaccinated littermates (even numbered pigs). In addition, each group of pigs was allotted to four water medication treatments that were administered from d 2 to d 6 after weaning. No significant interaction between vaccine and water treatment was observed. Vaccinated and non-vaccinated pigs performed similarly throughout the trial for the traits of ADG, ADFI, and F/G, indicating no beneficial effect from vaccination. Water medication after weaning did not affect performance or incidence of scours …

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Effects Of Various Fat Sources On Growth Performance Of Finishing Pigs (1989), David A. Nichols, Robert D. Goodband, Robert H. Hines, Jim L. Nelssen Jan 1989

Effects Of Various Fat Sources On Growth Performance Of Finishing Pigs (1989), David A. Nichols, Robert D. Goodband, Robert H. Hines, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

One hundred and twenty-eight finishing pigs averaging 124 lb were utilized to evaluate the effects of different fat sources on growth performance. Pigs were fed one of four diets containing either no added fat (control) or 4% added fat from soybean oil, coconut oil, or choice white grease. The control diet was formulated to contain 14.5 % crude protein and .66 % lysine. All fat-added diets were formulated with the same calorie:lysine ratio as the control diet. There were no differences in average daily gain between pigs fed either the control diet or diets containing added fat. Daily feed intake …

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Effects Of Lecithin And Lysolecithin On The Digestibility Of Fat Sources In Diets For Weanling Pigs (1989), D B. Jones, Jim L. Nelssen, Robert H. Hines, Joe D. Hancock Jan 1989

Effects Of Lecithin And Lysolecithin On The Digestibility Of Fat Sources In Diets For Weanling Pigs (1989), D B. Jones, Jim L. Nelssen, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Ninety-six pigs (17 d of age and 11.6 lb initial wt) were utilized to determine if adding emulsifiers (lecithin and lysolecithin) to diets containing 10% added fat would affect nutrient digestibility. Fat sources were: 1) soybean oil, 2) tallow, 3) lard, and 4) coconut oil. Lecithin and lysolecithin were added as 10% of the added fat. Pigs were limit fed using the following equation: daily feed allowance = .05 x body wt^9. After a 7-d adjustment period, feces were collected for 4 d, pooled, and analyzed for fat, nitrogen, and energy content. Soybean oil and coconut oil were more digestible …

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Effects Of A Flavoring Agent On Finishing Swine Performance (1989), M E. Johnston, G R. Stoner, Jim L. Nelssen Jan 1989

Effects Of A Flavoring Agent On Finishing Swine Performance (1989), M E. Johnston, G R. Stoner, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A finishing study was conducted to evaluate the effect of a commercially available flavoring agent on finishing pig performance. One hundred ninety-two finishing pigs were used in the study. Half the pigs received the finishing diet with added flavor, whereas the other half received the same diet without flavor. There were no differences in average daily gain (ADG) between pigs fed either the flavored or non-flavored feed. However, the pigs receiving flavored feed had significantly higher average daily feed intake for the entire trial. Feed efficiency was better for pigs fed the non-flavored diet than for those fed the flavored …

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Dose-Response Of Weanling Pigs To Streptococcus Faecium (1990), B J. Healy, Joe D. Hancock, Daniel Y.C. Fung, C Liang, S L. Yu Jan 1989

Dose-Response Of Weanling Pigs To Streptococcus Faecium (1990), B J. Healy, Joe D. Hancock, Daniel Y.C. Fung, C Liang, S L. Yu

Kansas Agricultural Experiment Station Research Reports

Two 5-wk experiments, using a total of 270 pigs (avg initial wt of 16.1 and 13.11b), were conducted to determine the dose-response relationship between Streptococcus faecium additions to drinking water and performance of newly weaned pigs. In experiment 1, treatments were: 1) untreated control; 2, 3, and 4) .5, 2.5, and 4.5 x 109 CFU of S. faecillm/pig/d; 5) antibioticfed positive control (CSP250 and CUS04)' Bacterial content of feces collected from the pigs on d 7, 14, and 21 indicated that antibiotic feeding greatly reduced fecal content of streptococci. S. faecium given in the water (.5, 2.5, or 4.5 x …

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Application Of Technology For Maximizing Lean Growth (1989), Robert D. Goodband Jan 1989

Application Of Technology For Maximizing Lean Growth (1989), Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

The swine industry is at a crossroads that either mayor may not change the way we produce pork in the future. As we head into the 90's, we are entering a new era in terms of growth promotion and carcass modification,which will produce overnight what would have taken generations to select for. Of the compounds tested, porcine somatotropin (pST) has the most potential to alter the structure of the swine industry. Many fear the application of this technology because of potential increases in pork production displacing and leading to fewer producers. Because pork quality will be improved tremendously (50% reduction …

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Effects Of Dietary Lysine Level On Growing Pig Performance (1989), D F. Li, M E. Johnston, Jim L. Nelssen, Robert D. Goodband Jan 1989

Effects Of Dietary Lysine Level On Growing Pig Performance (1989), D F. Li, M E. Johnston, Jim L. Nelssen, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

A growth trial utilizing 120 pigs (avg initial wt 43.4 lb) was conducted to investigate the lysine requirement for pigs weighing 45 to 75 lb. Pigs were fed a corn-soybean meal diet containing .65, .75, .85, .95, or 1.05% lysine. Average daily gain (ADG) and feed/gain (F/G) were determined weekly, and plasma urea concentration was determined at the end of the first and last week of the experiment. At d 14, ADG was increased and F/G improved with increasing lysine level. Gain was best for pigs fed the .95% lysine diet at d 14 and for those fed .85% lysine …

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Effects Of Daily Porcine Somatotropin Administration On The Performance And Carcass Characteristics Of Finishing Swine (1989), G E. Fitzner, David A. Nichols, B R. Schricker, D E. Darden, T L. Weeden, Robert D. Goodband, Robert H. Hines, Jim L. Nelssen, Donald H. Kropf Jan 1989

Effects Of Daily Porcine Somatotropin Administration On The Performance And Carcass Characteristics Of Finishing Swine (1989), G E. Fitzner, David A. Nichols, B R. Schricker, D E. Darden, T L. Weeden, Robert D. Goodband, Robert H. Hines, Jim L. Nelssen, Donald H. Kropf

Kansas Agricultural Experiment Station Research Reports

One hundred forty-four pigs (72 barrows and 72 gilts) were utilized in six treatments with six pens each to evaluate four levels of daily porcine somatotropin (pST) injections (0, 1, 3, or 5 mg/d) in combination with diets containing 13 or 16% crude protein (CP). One randomly selected pig from each pen was slaughtered when it reached a weight between 230 and 240 lb. Daily feed intake (ADFI), tenth rib backfat, and estimated percentage of lean pork were reduced in pigs fed the 13% CP diet and injected with 3 mg/d pST compared to pigs fed the same diet and …

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Effect Of Replacing Milk Products With A Soybean Protein Isolate Milk Replacer In Diets For Nursery Pigs (1989), D B. Jones, D F. Li, Jim L. Nelssen, Joe D. Hancock Jan 1989

Effect Of Replacing Milk Products With A Soybean Protein Isolate Milk Replacer In Diets For Nursery Pigs (1989), D B. Jones, D F. Li, Jim L. Nelssen, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

One hundred eighty pigs (21 d of age and averaging 14.5 lb) were used to determine if a milk replacer containing soybean protein isolate can replace dried skim milk and dried whey in a high nutrient density starter diet. Pigs received pelleted feeds that were: 1) corn-soybean meal control; 2) a high nutrient density diet (HNDD) containing 20% dried skim milk and 20% dried whey; 3 and 4) diet 2 with milk rcplacer substituted for 50% and 100% of the milk products; 5) corn-milk replacer; 6) corn-milk products. Average daily gain (ADG), average daily feed intake (ADFI), feed conversion (F/G), …

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Effect Of Diet Particle Size On Utilization Of Sunflower Oil Seeds In Nursery Pig Diets (1989), G E. Fitzner, T L. Weeden, Robert H. Hines, Robert D. Goodband Jan 1989

Effect Of Diet Particle Size On Utilization Of Sunflower Oil Seeds In Nursery Pig Diets (1989), G E. Fitzner, T L. Weeden, Robert H. Hines, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

One hundred ninety-two weanling pigs were fed diets containing 15 or 25% sunflower oil seeds that were ground using a hammermill equipped with either a 1/8 or 3/16 in. screen. Average daily gain (ADG) of pigs fed the 25% sunflower seed diet ground through a 1/8 in. screen was similar to ADG of pigs fed the control diet or that with 15% sunflower seeds, although there was a reduction in ADFI. This indicates that finely ground sunflower seeds can be utilized in nursery pig diets up to 25% with no impairment in performance.; Swine Day, Manhattan, KS, November 16, 1989

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Effect Of Soybean Processing On Starter Pig Performance And Nutrient Digestibility (1989), D F. Li, R C. Thaler, Jim L. Nelssen, Keith C. Behnke Jan 1989

Effect Of Soybean Processing On Starter Pig Performance And Nutrient Digestibility (1989), D F. Li, R C. Thaler, Jim L. Nelssen, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

One hundred sixty-eight pigs were used to evaluate the effect of soybean processing on starter pig performance and nutrient digestibility. Soybean products tested were commercial soybean meal, full-fat roasted soybeans from either a Roast-A-Tron or Rickles Roaster, extruded soybeans, and steam-flaked soybeans. Pigs fed soybeans from the Rickles Roaster had lower average daily gain, average daily feed intake, and feed efficiency than pigs fed the other soybean products. Rickles soybeans had lower apparent digestibility of nitrogen, dry matter, total fat, and long chain fatty acids than the other treatments. Pigs fed steam-flaked soybeans had the second lowest growth rate. These …

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Effect Of Various Fat Sources On Starter Pig Gut Morphology And Nutrient Digestibility (1989), D F. Li, R C. Thaler, D L. Harmon, T L. Weeden, Jim L. Nelssen Jan 1989

Effect Of Various Fat Sources On Starter Pig Gut Morphology And Nutrient Digestibility (1989), D F. Li, R C. Thaler, D L. Harmon, T L. Weeden, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

One digestion trial utilizing 24 weanling pigs was conducted to compare the effect of various fat sources on gut morphology and ileal nutrient digestibility. Diets had either no added oil (control) or were supplemented with 10% either soybean oil, coconut oil or a combination of soybean oil and coconut oil (1:1 ratio). Pigs were sacrificed on 29 d of age, and ileal digesta were collected. Villus height and crypt depth were measured at the midpoint of the small intestine. Results indicate that pigs fed the combination of soybean oil and coconut oil had longer villus height and slightly higher ileal …

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Effect Of Roasting On Utilization Of Sunflower Oil Seeds In Nursery Pig Diets (1989), G E. Fitzner, T L. Weeden, D F. Li, D B. Jones, Robert H. Hines, Robert D. Goodband, Joe D. Hancock Jan 1989

Effect Of Roasting On Utilization Of Sunflower Oil Seeds In Nursery Pig Diets (1989), G E. Fitzner, T L. Weeden, D F. Li, D B. Jones, Robert H. Hines, Robert D. Goodband, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

One hundred twelve weanling pigs were used to evaluate effects of diets containing 25% raw or low or high roasted sunflower seeds on performance. Pigs fed meal and pelleted diets containing sunflower seeds roasted to a roaster exit temperature of 264 of (low roast) were more efficient (F/G) than pigs fed raw sunflower seed diets in meal form. Pelleting raw, low roast, and high roast sunflower seed diets significantly improved F/G compared to raw sunflower seed and basal diets fed in meal form. These results indicate that meal diets containing 25% low roasted sunflower seeds or pelleted diets containing 25% …

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Evaluating Dhi Records With The Dairy Herd Analyzer (1989), James R. Dunham Jan 1989

Evaluating Dhi Records With The Dairy Herd Analyzer (1989), James R. Dunham

Kansas Agricultural Experiment Station Research Reports

A computer program was developed for analyzing DHI records to evaluate potential losses from 1) reproduction, 2) nutrition, 3) milk quality, and 4) genetics. Production-tested Kansas Holstein herds were grouped according to Rolling Herd Average (RHA), with the groups averaging 13,587, 15,988, 17,938 and 20,227 lb milk/cow/yr. Losses were directly related to RHA, amounting to $573, $426, $300, and $160/cow/yr, respectively. The Dairy Herd Improvement (DHI) program provides valuable information to dairy farmers for making feeding, breeding, and management decisions. Yet, the only economic information provided by the program is feed cost/cwt milk produced and income over feed cost. Hence, …

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Reproductive Status Of Kansas Dairy Herds (1989), Edward P. Call Jan 1989

Reproductive Status Of Kansas Dairy Herds (1989), Edward P. Call

Kansas Agricultural Experiment Station Research Reports

There has been no appreciable change in the reproduction status of Kansas dairy herds over the last 25 yr. For example, the average calving interval was 398 days in 1965 and 405 days in 1988. Analysis of other measures show similar results. Although the long-stated management goal for a dairy herd has been a calf-a-year or 365-day calving interval, few herds realize this efficiency. On the positive side, the stability of reproductive performance is noteworthy, since genetic antagonism exists between production and reproduction. From 1965 to 1988, average yearly milk production in production-tested herds (DHI) has increased 41%.; Dairy Day, …

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Why Do Dairy Cows Have Reproductive Problems? How Can We Solve Those Reproductive Problems? (1989), J.S. Britt Jan 1989

Why Do Dairy Cows Have Reproductive Problems? How Can We Solve Those Reproductive Problems? (1989), J.S. Britt

Kansas Agricultural Experiment Station Research Reports

Except for very low producing herds, management of reproduction does not seem to have much effect on the herd's level of production. To counter this statement, we must ask the question: "If they did not manage reproduction, what would their production level be?" Dairy cows develop reproductive problems from three major categories of causes: man-made, biological, and environmental.; Dairy Day, 1989, Kansas State University, Manhattan, KS, 1989; The 1989 Annual KSU Dairy Day is known as Dairy Day, 1989

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Reproductive Research In Dairy Cattle At Ksu (1989), Jeffrey S. Stevenson Jan 1989

Reproductive Research In Dairy Cattle At Ksu (1989), Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Research in reproductive physiology and breeding management of dairy cattle at Kansas State University has the following objectives: 1) to better understand those factors that influence the reestablishment of ovarian function, estrous cycles, and fertility after calving and 2) to apply that knowledge to areas of management in which pregnancy rates and calving intervals can be improved in dairy herds. Our past efforts have included 1) pioneering research into the applications of gonadotropin-releasing hormone (GnRH) at the time of insemination and early postpartum as a prophylactic treatment for inducing estrous cyclicity; 2) application of treatments utilizing prostaglandin F2α(PGF2α) for breeding …

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The Effect Of Nutrient Intake And Protein Degradability On The Growth And Development Of Holstein Heifers (1989), D.E. Isbell, J.L. Morrill Jan 1989

The Effect Of Nutrient Intake And Protein Degradability On The Growth And Development Of Holstein Heifers (1989), D.E. Isbell, J.L. Morrill

Kansas Agricultural Experiment Station Research Reports

One hundred and twelve Holstein heifers were used from 10 wk until 26 wk of age. They were assigned to receive either 100% or 115% of NRC (1978) recommended nutrients and to be fed either control or extruded SBM. There were no interaction effects between the nutrient amount and type of SBM. Heifers on the higher nutrient amounts gained 205 lb vs 168 lb for the heifers on the lower nutrient amounts. Those on the higher nutrient amounts also had greater increases in height (8.7 vs 7.5 in), length (10.2 vs 8.7 in), and heart girth (12.6 vs 10.6 in). …

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Effect Of Lasalocid In Rations For Growing Heifers (1989), D.E. Isbell, J.L. Morrill Jan 1989

Effect Of Lasalocid In Rations For Growing Heifers (1989), D.E. Isbell, J.L. Morrill

Kansas Agricultural Experiment Station Research Reports

Sixty-four Holstein heifer calves were used from 10 to 26 wk of age to study the effects of lasalocid on growth and feed consumption. Calves were evaluated weekly for weight gain and feed consumption. Lasalocid-fed heifers gained slightly, but not significantly, more than those that did not receive lasalocid. Their hay consumption was not significantly different than that of the control heifers.; Dairy Day, 1989, Kansas State University, Manhattan, KS, 1989; The 1989 Annual KSU Dairy Day is known as Dairy Day, 1989

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A Rapid Method Of Analysis Of Corn Grain Fordairy Cattle (1989), G. Garcia, R. Malvetti, L.H. Harbers Jan 1989

A Rapid Method Of Analysis Of Corn Grain Fordairy Cattle (1989), G. Garcia, R. Malvetti, L.H. Harbers

Kansas Agricultural Experiment Station Research Reports

Calibration equations for near infrared reflectance spectroscopy (NIRS) have been either purchased from the manufacturer or developed in the laboratory. Comparative analysis with standard laboratory procedures indicate that NIRS may be used for analyzing dairy feedstuffs, when proper calibration is made with local feedstuffs. NIRS is a new, rapid method of analyzing feedstuffs that reduces the time from several days to one minute or more after grinding and subsampling. The instrument needs to be calibrated from nutrient analyses made in the laboratory. Many calibrations may be purchased from the manufacturer of the instrument; however, we have found that many Kansas …

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Comparison Of Growth Of Holstein Heifers Fed100% Or 115% Of Nrc Requirements (1989), M. G. Daccarett, J.L. Morrill Jan 1989

Comparison Of Growth Of Holstein Heifers Fed100% Or 115% Of Nrc Requirements (1989), M. G. Daccarett, J.L. Morrill

Kansas Agricultural Experiment Station Research Reports

One hundred and one Holstein heifers from the KSU Dairy Unit were used in this experiment. They were assigned to two treatments in which they were fed either 100% or 115% of the 1988 NRC requirements of energy, protein, major minerals, and major vitamins. Body measurements (height, length, heart girth, weight, body condition scores, and backfat thickness) were recorded. Rations for each group were formulated using the average wt of the heifers. Results suggest that feeding 115% of NRC requirements produces larger frame heifers (without excess body condition), with potential for earlier calving, compared to feeding 100% of NRC requirements.; …

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Evaluation Of Water Oxygenation Onmilk Production: Milk Composition Andsomatic Cell Concentration In Milk (1989), John E. Shirley, C. Galdamez, J. Estrada Jan 1989

Evaluation Of Water Oxygenation Onmilk Production: Milk Composition Andsomatic Cell Concentration In Milk (1989), John E. Shirley, C. Galdamez, J. Estrada

Kansas Agricultural Experiment Station Research Reports

Forty Holstein cows in mid-lactation were utilized to evaluate the effects of water oxygenation on milk production, milk composition, and somatic cell count. Cows were fed a total mixed ration consisting of 25% alfalfa, 25% corn silage, and 50% corn-soy concentrate on a dry matter basis. Treatments included a 7-day preliminary period followed by two 28-day periods in which the treatments were reversed. Water consumption, milk production, milk composition, and somatic cell count were not different between treatments. Cows receiving oxygenated water were more docile and easily managed than control cows. Ozone introduced into water forms hydrogen peroxide, nitrous oxide, …

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Neutrophil And Lymphocyteresponse To Vitamins C And Esupplementation In Young Calves (1989), S.D. Pruiett, J.L. Morrill, Frank Blecha, James J. Higgins Jan 1989

Neutrophil And Lymphocyteresponse To Vitamins C And Esupplementation In Young Calves (1989), S.D. Pruiett, J.L. Morrill, Frank Blecha, James J. Higgins

Kansas Agricultural Experiment Station Research Reports

Calves were bottle-fed milk replacers at 10% of weekly adjusted body weight for 8 wk. Treatments were 1) no supplements (control), 2) .16 oz vitamin C, or 3) .16 oz vitamin C plus 125 IU/lb vitamin E. Lymphocytes and neutrophils isolated from day 14 and day 28 blood samples were assayed for neutrophil-mediated S. aureus phagocytosis and antibody-dependent cellular cytotoxicity, and for mitogen induced lymphocyte proliferation. Eye and nasal discharges of calves supplemented with vitamin C and vitamins C plus E were less than those of control calves for wk 1 to 8. Lymphocyte proliferation with the mitogens showed a …

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Utilization Of Near Infrared Reflectancefor The Determination Of Fat, Moisture,And Protein In Cheddar Cheese (1989), G.S. Zink, I.J. Jeon, L.H. Harbers Jan 1989

Utilization Of Near Infrared Reflectancefor The Determination Of Fat, Moisture,And Protein In Cheddar Cheese (1989), G.S. Zink, I.J. Jeon, L.H. Harbers

Kansas Agricultural Experiment Station Research Reports

Near infrared reflectance spectroscopy (NIRS) was used to develop calibration equations for the rapid determination of moisture, protein, and fat in Cheddar cheese. Most mean values from NIRS data had lower standard deviations than values obtained by standard laboratory procedures. A larger number of samples is needed to refine calibrations and validate the equations.; Dairy Day, 1989, Kansas State University, Manhattan, KS, 1989; The 1989 Annual KSU Dairy Day is known as Dairy Day, 1989

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Pregnancy Rates Of Dairy Cows At First Service:Influence Of Gonadotropin-Releasing Hormoneand Timing Of Ai Relative To Estrus (1989), Jeffrey S. Stevenson, M.O. Mee, R.K. Scoby, Y. Folman Jan 1989

Pregnancy Rates Of Dairy Cows At First Service:Influence Of Gonadotropin-Releasing Hormoneand Timing Of Ai Relative To Estrus (1989), Jeffrey S. Stevenson, M.O. Mee, R.K. Scoby, Y. Folman

Kansas Agricultural Experiment Station Research Reports

We demonstrated that gonadotropin-releasing hormone (GnRH or Cystorelin®) failed to improve pregnancy rates at the first service. When GnRH injection and insemination are both carried out either in early or late estrus or if cows are bred in early estrus and given a GnRH injection later in estrus, pregnancy rates are reduced by 9 to 13 percentage points compared to breeding according to the am-pm rule without GnRH treatment (control). Pregnancy rates of cows injected with GnRH early in estrus and bred in late estrus were similar to controls injected with saline and inseminated late in estrus (46 vs 43%). …

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Dairy Facility Design (1989), J.P. Muprhy Jan 1989

Dairy Facility Design (1989), J.P. Muprhy

Kansas Agricultural Experiment Station Research Reports

When planning new construction or major modification of a dairy system, consider: "¢ calf, heifer, dry cow, and milking cow housing; "¢ feed types, handling equipment, and storage; "¢ manure handling method; "¢ milking system and equipment; "¢ labor requirements; "¢ building environment; "¢ sanitary and pollution control regulations; "¢ future expansion. Many dairy farmers produce their own feeds and raise their own herd replacements. The needs of each groups require different housing, feeding, storage, and handling systems.; Dairy Day, 1989, Kansas State University, Manhattan, KS, 1989; The 1989 Annual KSU Dairy Day is known as Dairy Day, 1989

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Changes In Genetic Evaluation Of Dairy Cattle: The Animal Model (1989), K. Heikes Jan 1989

Changes In Genetic Evaluation Of Dairy Cattle: The Animal Model (1989), K. Heikes

Kansas Agricultural Experiment Station Research Reports

The July 1989 USDA Sire Summary introduced a new system for genetic evaluations in dairy cattle. These evaluations, known as the Animal Model (AM), include several new features that help to increase the accuracy of evaluations compared to the way sire summaries were calculated in the past.; Dairy Day, 1989, Kansas State University, Manhattan, KS, 1989; The 1989 Annual KSU Dairy Day is known as Dairy Day, 1989

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The Use Of Bovine Somatotropin (Bst) In Dairy Cattle (1989), J. Estrada, John E. Shirley Jan 1989

The Use Of Bovine Somatotropin (Bst) In Dairy Cattle (1989), J. Estrada, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

We all have heard about the use of BST in lactating dairy cattle during the last 6 to 8 years, but what is BST? Bovine somatotropin is another dairy management tool developed to improve the efficiency and reduce the cost of producing milk. It is the newest in a list of technological advances in the dairy industry, such as genetic improvements, nutrition, health, housing, milking equipment and techniques, embryo transfer, and DHI records. BST is a natural protein produced in the anterior pituitary gland of all cattle. Like other proteins, BST is composed of various amino acids (190-199). BST is …

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Involution Of The Uterus Of Dairy Cattle (1989), Edward P. Call Jan 1989

Involution Of The Uterus Of Dairy Cattle (1989), Edward P. Call

Kansas Agricultural Experiment Station Research Reports

The rate of involution of the bovine uterus is remarkable. By 20 days after calving, tissue sloughing and hemorrhaging have ceased, and the size of the uterus has been reduced by more than 80%. By 40 days, the uterus has completely involuted except for isolated pockets of leukocytes. Any reproductive or metabolic disorders around calving will delay involution. A preventive herd health program (PHHP) including a reproductive examination of cows within a month after calving will pay dividends in improved reproductive performance. With a sound PHHP, servicing cows on the first heat after 42 days fresh is recommended.; Dairy Day, …

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1989 Agricultural Research, Southeast Kansas Branch Station, L. W. Lomas, K. P. Coffey, J. L. Moyer, D. W. Sweeney, G. V. Granade, T. Walter, K. W. Kelley Jan 1989

1989 Agricultural Research, Southeast Kansas Branch Station, L. W. Lomas, K. P. Coffey, J. L. Moyer, D. W. Sweeney, G. V. Granade, T. Walter, K. W. Kelley

Kansas Agricultural Experiment Station Research Reports

Research on beef cattle and crops at Southeast Kansas Branch Station.

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