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Articles 1 - 6 of 6
Full-Text Articles in Animal Sciences
Estimating Dry Matter Digestibility Of Forage In Equine Diets, Taylor N. Godwin
Estimating Dry Matter Digestibility Of Forage In Equine Diets, Taylor N. Godwin
MSU Graduate Theses
Previous research indicates equine fecal inoculates produce comparable results to cecal fluid when used for in vitro procedures to analyze dry matter digestibility (DMD). Equine hindgut microbial populations represented in fecal samples have been shown to be affected by diet. The objective of this study was to determine the effect of diet on in vitro DMD when fecal samples from horses on varying starch and fiber diets were used as inoculates. Six mature Quarter Horses (BW 522 ± 45kg) were used in a crossover repeated measures design to compare the effects of a grain vs. all forage diets on the …
Stress And Body Composition Of Juvenile Alligator Snapping Turtles (Macrochelys Temminckii), Brandon Scott Tappmeyer
Stress And Body Composition Of Juvenile Alligator Snapping Turtles (Macrochelys Temminckii), Brandon Scott Tappmeyer
MSU Graduate Theses
The alligator snapping turtle (Macrochelys temminckii), is a species of conservation concern that is the subject of multiple head-start and reintroduction efforts across its range. In captive propagation programs, producing offspring that are in optimal physiological condition maximizes the likelihood of success after release. The purpose of my study was to compare stress and body composition between one free-ranging reintroduced population and two captive populations. The two captive populations were both housed in southern Oklahoma, but one group was reared indoors whereas the other inhabited outdoor ponds at a national fish hatchery. I used circulating glucocorticoid (corticosterone) concentrations as an …
Role Of Methionine In Fetal Development Of Beef Cattle, Colin D. Chalk
Role Of Methionine In Fetal Development Of Beef Cattle, Colin D. Chalk
MSU Graduate Theses
The objective of this study was to evaluate whether total amino acids (AA) or methionine have an effect on fetal programming of calves using 108 Angus Brangus cows. Treatments were 1) Control, limpograss hay with molasses plus urea (16% CP as fed basis) at 2.72 kg./hd/d, 2) Fishmeal, Control plus 0.33 kg./hd/d of fishmeal ( methionine 2.85 % of RUP), and 3) Methionine, Control plus 10 g/hd/d of MetaSmart liquid (Addisseo Alpharetta, GA) . Fishmeal and Methionine treatments supplied similar amounts of metabolizable methionine. Weight of cows and calves along with body condition score of cows were measured at the …
Oxyrase And Pyruvate Inclusion In Extenders For Cold Stored Stallion Spermatozoa, Jordan T. Shore
Oxyrase And Pyruvate Inclusion In Extenders For Cold Stored Stallion Spermatozoa, Jordan T. Shore
MSU Graduate Theses
A current method in addressing subfertility in stallions include manipulating the semen extender media by supplementing antioxidants and energy sources. Two experiments (EXP 1/EXP 2) were conducted to assess the effects of pyruvate and Oxyrase® suspended in commercial diluents for preservation of stallion spermatozoa. Assessment of total (TM) and progressive motility (PM), velocity and direction of movement (VAP, VSL, VCL, and elongation) were recorded by CASA. In EXP 1, 3 different ejaculates were collected from each of 4 stallions. Aliquots of each ejaculate were suspended into 4 treatments of INRA96 with or without Oxyrase® supplemented at 2.4 U/ml …
A Low-Water Crossing Impacts Movement Behavior Of Northern Hog Suckers In An Ozark Stream, Jeff Michael Williams
A Low-Water Crossing Impacts Movement Behavior Of Northern Hog Suckers In An Ozark Stream, Jeff Michael Williams
MSU Graduate Theses
Low-water crossings are common in Ozark streams and can restrict longitudinal movement in fishes. I evaluated the impact of the Cedar Grove low-water crossing on Northern Hog Sucker Hypentelium nigricans movement behavior in Missouri’s Current River. Radio-tagged fish upstream (henceforth ‘above’; N = 24) and downstream (henceforth ‘below’; N = 26) of the crossing were followed monthly for a year to assess 1) frequency of fish passage, 2) direction of passage, and 3) maximum displacement of mobile (displacement > 1 km) fish. I then looked at diel movement behavior of stationary (displacement < 1 km) fish near the crossing to assess 1) total displacement and linear home range, 2) direction of diel displacement, and 3) habitat use. Passage was limited to four below-tagged fish and was more likely to occur in the upstream direction and during high flow. The direction of maximum displacement in mobile fish was primarily away from the crossing, and below-tagged fish exhibited over seven times greater displacement than above-tagged fish. Diel displacement and linear home range were greater in above-tagged fish, likely due to degraded upstream habitat that increased the distance between day and night habitats. My results suggest the crossing is a semi-permeable barrier that also affects local-scale movement behavior of Northern Hog Suckers. Alternatives to the low-water crossings at Cedar Grove, such as modifying the side channel into a fish bypass, should be considered to promote natural longitudinal movement of fishes in the upper Current River.
White-Nose Syndrome And Immune Responses In A Resistant Bat Species (Eptesicus Fuscus), Keslie Skye Naffa
White-Nose Syndrome And Immune Responses In A Resistant Bat Species (Eptesicus Fuscus), Keslie Skye Naffa
MSU Graduate Theses
White-nose syndrome (WNS) has had a large negative impact on bat populations across eastern North America since its arrival in 2006. Bats affected by WNS appear to die of starvation, possibly due to the increased arousals during hibernation when there is no food present to replace the energy used to arouse. During hibernation, the bat’s immune system should be suppressed. However, once a bat of a susceptible species is exposed to the fungus that causes WNS, Psuedogymnoascus destructans (Pd), the immune system seems to respond, potentially causing an elevation in metabolic rate, which may cause the bat to …