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The Relationship Between Protein And Phosphorus Digestion And Retention In Growing Pigs And Broiler Chickens, Pengcheng Xue

Open Access Dissertations

Xue, Pengcheng. Ph.D., Purdue University, December 2016. The Relationship between Protein and Phosphorus Digestion and Retention in Growing Pigs and Broiler Chickens. Major Professor: Dr. Layi Adeola. The objective of this study was to investigate the relationship between protein and P digestion and retention in growing pigs and broiler chickens. The methodology of determining the digestibility of AA and P and the effect of dietary N and P on the digestion and retention of these two nutrients were investigated.

An experiment was conducted in growing pigs to investigate the additivity of AID or SID of CP and AA in mixed …

Nutrient Runoff And Leachate After Land-Application Of Digestate In A Laboratory Study Using Rainfall Simulations, Min Xiao

Open Access Theses

There has been an increasing number of anaerobic digesters on livestock farms in the United States during the past two decades. Anaerobic digestion of manure allows production of renewable energy and generation of stabilized and nutrient-rich digestate that can be used as organic fertilizer. However, the majority of the existed studies using liquid digestate as fertilizer only focused on the effectiveness for crop yield, nutrient content and microorganism in soil. There is insufficient understanding in the environmental impact of digestate land-application. This laboratory study used six treatments including four different liquid digestate treatments, a chemical fertilizer treatment, and an unfertilized …

Estimating Phosphorus Removal By Steel Slag In A Flume Experiment: Effects Of Phosphorus Concentration And Subsurface Hydrological Condition, Isis Stacanelli Pires Chagas

Open Access Theses

Excessive phosphorus (P) in water bodies is one of the most concerning water quality issues in the U.S., impacting public health, the environment and the economy. Managing excessive P is essential to reduce the incidence of environmental quality issues, such as eutrophication and harmful algal blooms. One potential strategy that is being developed for this purpose is the use of P sorption materials (PSMs) to sequester P from water systems, which is the objective of this study.

Estimating Phosphorus Removal By Steel Slag In A Flume Experiment: Effects Of Phosphorus Concentration And Subsurface Hydrological Condition, Isis Stacanelli Pires Chagas

Open Access Theses

Excessive phosphorus (P) in water bodies is one of the most concerning water quality issues in the U.S., impacting public health, the environment and the economy. Managing excessive P is essential to reduce the incidence of environmental quality issues, such as eutrophication and harmful algal blooms. One potential strategy that is being developed for this purpose is the use of P sorption materials (PSMs) to sequester P from water systems, which is the objective of this study.

Impact Of Antimicrobials With Or Without The Addition Of Phytase On Phosphorus Digestibility And Utilization In Swine And Broiler Chickens, Katherine A. Mccormick

Open Access Theses

Three studies were conducted for this thesis. In study 1, effects of antimicrobials on nutrient digestibility and retention of 18 to 20-kg pigs was investigated. The study used a randomized complete block design (RCBD) with 4 treatments and 6 replicate pigs in individual metabolism crates per treatment. The four treatments consisted of, negative control (NC) devoid of antimicrobials with 0.41% total P and 0.71% Ca, NC with 55 mg/kg carbadox (Mecadox 10, Phibro Animal Health), 44 mg/kg tylosin (Tylan 40, Elanco Animal Health), and 11 mg/kg virginiamycin (Stafac 20, Phibro Animal Health). A 5-d total collection period with chromic oxide …