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Animal Sciences

Kansas Agricultural Experiment Station Research Reports

2019

Articles 61 - 67 of 67

Full-Text Articles in Life Sciences

Determining The Effects Of Increasing Levels Of Xylanase In Nutrient Adequate Diets On Growth Performance, Carcass Characteristics Of Growing-Finishing Pigs, H. R. Kerkaert, J. M. Derouchey, S. S. Dritz, R. D. Goodband, M. D. Tokach, J. C. Woodworth, H. Calderone Cartagena, M. Gonçalves Jan 2019

Determining The Effects Of Increasing Levels Of Xylanase In Nutrient Adequate Diets On Growth Performance, Carcass Characteristics Of Growing-Finishing Pigs, H. R. Kerkaert, J. M. Derouchey, S. S. Dritz, R. D. Goodband, M. D. Tokach, J. C. Woodworth, H. Calderone Cartagena, M. Gonçalves

Kansas Agricultural Experiment Station Research Reports

A total of 1,944 mixed sex growing-finishing pigs (PIC; 337 × 1050; initial BW of 49.9 ± 1.18 lb) were used in a 131-d growth trial to determine the effects of increasing added xylanase xylanase in adequate diets on grow-finish pig growth performance and carcass characteristics. Pens were assigned to 1 of 6 treatments in a randomized complete block design with BW as a blocking factor. There were 12 replicate pens per treatment and 27 pigs per pen. The experimental diets were corn-soybean meal-based and were fed in 5 phases. The 6 dietary treatments were formulated to: 0, 2.3, 4.5, …

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Determination Of Efficacy Of Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, J. Faser Jan 2019

Determination Of Efficacy Of Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, J. Faser

Kansas Agricultural Experiment Station Research Reports

A total of 320 nursery pigs (DNA; 241 × 600; initially 22.9 lb BW) were used in a 21-d growth trial to determine the available P (aP) release curve for Smizyme TS G5 2,500 (Origination, Inc., Saint Paul, MN). Pigs were weaned at approximately 21 d of age, randomly allotted to pens based on initial body weight (BW), and fed common starter diets. On d 21 post-weaning, considered d 0 of the study, pens were blocked by BW and randomly allotted to 1 of 8 dietary treatments with 5 pigs per pen and 8 pens per treatment. Eight 1-ton batches …

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Effect Of Steam Pressure And Conditioning Temperature During The Pelleting Process On Phytase Stability, C. N. Truelock, N. E. Ward, J. W. Wilson, C. R. Stark, C. B. Paulk Jan 2019

Effect Of Steam Pressure And Conditioning Temperature During The Pelleting Process On Phytase Stability, C. N. Truelock, N. E. Ward, J. W. Wilson, C. R. Stark, C. B. Paulk

Kansas Agricultural Experiment Station Research Reports

This experiment was designed to evaluate the effects of steam pressure and conditioning temperature on the stability of microbial phytase. Treatments were arranged as a 2 × 3 factorial of steam pressure (24 and 44 psi) and conditioning temperature (170, 180, and 190°F). Phytase was added to a corn-soybean meal-based diet and mash samples were collected for phytase analysis. The diet was pelleted via steam conditioning (10 × 55 in Wenger twin staff pre-conditioner, Model 150) and using a pellet mill (CPM Model 1012-2) with a 3/16 × 1 1/4 in pellet die (L:D 6.7). Conditioner retention time was set …

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Evaluation Of A Commercial Model For Predicting Growth Performance Of Pigs With Varying Diet Composition And Stocking Density, M. B. Menegat, F. Wu, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband Jan 2019

Evaluation Of A Commercial Model For Predicting Growth Performance Of Pigs With Varying Diet Composition And Stocking Density, M. B. Menegat, F. Wu, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to validate the growth performance predictions of a commercial model (CAMERA®; INTL FCStone, New York, NY) by comparing the optimally-solved estimates with observed growth performance from published studies. Three studies were selected to create 3 feeding scenarios: 1) variation in dietary energy concentrations and fiber sources (Nitikanchana et al., 2015); 2) variation in dietary lysine level (Menegat et al., 2017); and 3) variation in space allowance (Carpenter et al., 2018). For each validation scenario, the growth performance of pigs from the best-performing treatment group was first estimated, calibrated using the observed performance, and used …

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Disease Prevalence And Its Consequences On Blood Metabolites, Physical Activities, Milk Yield, And Fertility, J. S. Stevenson, S. Banuelos Jan 2019

Disease Prevalence And Its Consequences On Blood Metabolites, Physical Activities, Milk Yield, And Fertility, J. S. Stevenson, S. Banuelos

Kansas Agricultural Experiment Station Research Reports

Health status of 160 lactating cows was monitored by assessing blood metabolites on days 0, 3, 7, and 14 after calving, in addition measures of physical activity during 20 days surrounding parturition. Cows with clinical disease (any with diagnosis of ketosis, metritis, mastitis, respiratory disease, or milk fever during the first 60 days in milk) were compared with outcomes in healthy cows. Expected differences were observed between health status groups for serum concentrations of free fatty acids, beta-hydroxybutyrate, haptoglobin, and calcium, but not for plasma glucose. Daily postpartum rumination and eating times were decreased in diseased cows and they spent …

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Individual Feed Intake Of Transition Cows And Their Daily Activity Measures Of Temperature, Eating, Rumination, Resting, And Activity Times, J. S. Stevenson, C. S. Takiya, B. J. Bradford Jan 2019

Individual Feed Intake Of Transition Cows And Their Daily Activity Measures Of Temperature, Eating, Rumination, Resting, And Activity Times, J. S. Stevenson, C. S. Takiya, B. J. Bradford

Kansas Agricultural Experiment Station Research Reports

Fifteen transition dairy cows bearing CowSensor®ear tags were monitored during 14 days before and after calving to assess temperature and behavior outcomes recorded by the sensors, in addition to actual individual dry matter and as-fed feed intake. The sensors—compared with reported visual observation studies—underestimated eating and resting times, but rumination time was estimated reasonably accurately. Expected changes in rumination (decreased acutely before calving and increased linearly to day 14) and general activity (increased acutely just before calving) were observed. More studies are warranted to determine how to use these activity monitors in detecting health disorders of cows that …

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Effects Of A High-Protein Corn Product On Nutrient Digestibility And Production Responses In Mid-Lactation Dairy Cows, W. E. Brown, B. J. Bradford Jan 2019

Effects Of A High-Protein Corn Product On Nutrient Digestibility And Production Responses In Mid-Lactation Dairy Cows, W. E. Brown, B. J. Bradford

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted to assess the effects of a high-protein corn product (56% crude protein; CP) relative to other sources of protein on the lactation performance of dairy cows. Twenty-four Holstein cows (1,367 ± 105 lb of body weight, 111 ± 34 days in milk, 2.28 ± 0.46 lactations; mean ± standard deviation) were randomly assigned to treatment sequence in a replicated 4 × 4 Latin square design balanced for carryover effects. Cows were individually fed one of four diets with a different protein concentrate source during each 28-day period, including: soybean meal (SBM), high-protein corn product (HPCP), soybean …

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