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Prediction of optimal rumen degradable protein levels in no-roughage, corn-based feedlot diets
(University of Missouri--Columbia, 2007)
), and NPN (96.3% corn, 1.7% biuret; 8.8% RDP). The CON and NPN diets were designed to limit MOEFF. Additionally, 100 crossbred steers were blocked by weight and divided into twenty pens. Dietary treatments were fed for 105 days and were CON (95.55% corn, 4...
Self-selection of animal by-product by poultry through utilization of choice feeding
(University of Missouri--Columbia, 2020)
"The emergence of animal welfare provisions by humane societies has limited management practices. One of these provisions is the animal's freedom to express normal behavior. Animal by-product feeding to livestock and poultry ...
Improving viability of immunodeficient RAG2-/- pigs by non-specific porcine antibody administration
(University of Missouri--Columbia, 2020)
was reported in our immunocompetent wildtype pigs as remaining present in vivo over 0.05 [mu]g/mL for 10 days yielding a half-life of approximately 3.5 days, even though IgG has been described to have a half-life of 21 days....
Genetic and nutritional effects on reproduction in lactating dairy cows
(University of Missouri--Columbia, 2020)
performance observed in high genetic merit lactating dairy cows compared to cows of an average genetic merit managed in a standardised environment. The studies specifically focused on characterising uterine health, ovarian activity, circulating concentrations...
Evaluation of modified montmorillonites in poultry diets
(University of Missouri--Columbia, 2007)
The present work was conducted to determine if modification of MONTs with Cu and Zn would enhance the protection of broiler chicks against the adverse effects of AF, and to determine if the modified MONTs would be bioavailable ...
Effect of ovulatory follicle size on bovine pregnancy associated glycoproteins in beef cattle
(University of Missouri--Columbia, 2010)
following GnRH-induced ovulation of 14 to 15 mm compared to 12 to 13 mm follicles. The first increase in bPAG occurred on d 24. There was an effect of day on bPAG but no effect of ovulatory follicle size or ovulatory follicle size by day interaction from d...
Protein source selection in nursery pigs during choice-feeding
(University of Missouri--Columbia, 2020)
focus is on the concern for animal welfare on farms (Deemer and Labao, 2001). Programs have been created to capitalize on this trend and create products deemed more ethical from mainstream production. Most of which do not back their practices by science...
Feed intake component of fescue toxicosis during short-term exposure to thermoneutral and heat stress conditions
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Fescue toxicosis is results from intake of tall fescue grass containing a fungal endophyte. It affects most of herbivore species, including rodents. ...
Interaction of metsulfuron and nitrogen fertilizer in Tall Fescue forage systems
(University of Missouri--Columbia, 2022)
resources and time. It has been reported to cost $250 to $400 per acre to replace tall fescue, with an additional 18 months of no grazing while new species emerge. Most current research efforts have focused on managing tall fescue to reduce toxicity risk...
Comparative transcriptional profiling of the uterus according to stage of the estrous cycle and pregnancy status in gilts
(University of Missouri--Columbia, 2007)
of temporal and spatial specific gene expression, help create the microenvironment required for movement of gametes, capacitation of sperm, fertilization, successful embryonic development and subsequent fetal growth. During the first 30 days of gestation...
Effects of heat stress on leukocyte function and gene expression in lactating dairy cows
(University of Missouri--Columbia, 2018)
, behavior, and health lead to greater costs for producers and decreased welfare for animals. In terms of health, the current literature does not provide conclusive evidence of the effects of heat stress on the immune system of dairy cows. To elucidate a...
Phenotypic and genetic effects of disposition on beef tenderness and quality attributes
(University of Missouri--Columbia, 2011)
and are profitable to producers. The American Simmental Association (ASA) provided records which included pedigree information, multiple WBSF core values, reported as average peak shear force (APSF), and a maximum of two EV measurements taken 42 days apart. Bayesian...
Molecular regulation of fetal brain development in pigs
(University of Missouri--Columbia, 2021)
of the male (M) and female (F) fetal brain at gestation day (d) 45, 60 and 90. The analysis showed fewer differentially expressed genes (DEGs) in the brain of male and female fetuses in earlier gestation (d45-d60) when compared to late gestation (d60-d90...
Comparison of long-term progestin-based protocols to synchronize estrus in beef heifers
(University of Missouri--Columbia, 2009)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Experiment 1 evaluated two long-term progestin-based and controlled internal drug release estrus synchronization protocols to determine their potential ...
Factors affecting neonatal and peripartum maternal metabolism and behavior in beef cattle and horses
(University of Missouri--Columbia, 2018)
to parturition in beef cattle, and the effect of parity on those behavioral changes. Changes in activity were detected during the 3 d prior to calving, with some parameters affected by parity. Lying bouts increased on the day prior to calving...
Effect of dry matter intake restriction on energy balance, ruminal fermentation, and nutrient retention by beef steers
(University of Missouri--Columbia, 2005)
assigned to one of two diets that were formulated to promote a 1.6 kg ADG at either AL or IR80. All diets delivered similar total NE, MP, Ca, and P per day. During both trials, fecal DM output by IR80 was less (P[greater than or equal to] 0.03) than...
Influence of seasonal environment, top and bottom deck transport, transport duration, and time in lairage on overall pork quality and blood serum cortisol concentrations of market hogs
(University of Missouri--Columbia, 2007)
Objectives of this study were to determine effects of seasonal environment, top and bottom deck transport, transport duration, and time in lairage on overall pork quality and blood serum concentrations of the stress hormone ...
Transgenerational effects of in utero heat stress on reproduction in pigs
(University of Missouri--Columbia, 2017)
(GHS n=23; GTN n=25) were moved to the University of Missouri Swine Teaching Farm to farrow at approximately day 114 of gestation. No differences were observed between GHS and GTN females at the 8th week of gestation. Similarly, no differences were...
Development and analysis of a FOXA2 conditional overexpression mouse model
(University of Missouri--Columbia, 2018)
expression. Chapter 2, the research chapter, shows that we developed a mouse model which could express FOXA2 continuously only in the cells with expression of Cre recombinase. By applying two different mouse strains with special Cre expression, we found...
Alleviation of heat stress with Tasco in dairy cows
(University of Missouri--Columbia, 2010)
The present study determined the impact of Tasco, Ascophyllum nodosum, on heat stress in dairy cows. Thirty-two Holstein cows were utilized in a randomized complete block design, during 63 days in summer 2008. Feed intake, milk production...