Balancing Phosphorus on a Dairy Farm PDF Download

Author: Alan Galbraith
Publisher:
ISBN: 9781855277182
Category : Dairy farming
Languages : en
Pages : 8

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Author: Ermias Kebreab
Publisher: CABI
ISBN: 1780640420
Category : Technology & Engineering
Languages : en
Pages : 335

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Book Description
In order to meet increasing global demand for meat and animal by-products increasingly intensive animal production is necessary. Creating a sustainable system in animal agriculture that works in different production environments is a major challenge for animal scientists. This book draws together themes on sustainability that have emerged as the most pressing in recent years. Addressing practical topics such as air quality, manure management, animal feeds, production efficiency, environmental sustainability, biotechnology issues, animal welfare concerns, societal impacts and an analysis of the data used to assess the economic sustainability of farms.

Author: Harry Pestano Young
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 892

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Author: Howard Bowman Ellenberger
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 30

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Author: Kevin A. Erb
Publisher:
ISBN:
Category : Biomass chemicals
Languages : en
Pages : 274

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Book Description

Author: Heidi M. Waldrip
Publisher: John Wiley & Sons
ISBN: 0891183701
Category : Technology & Engineering
Languages : en
Pages : 448

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Book Description
The majority of meat, milk, and eggs consumed in the United States are produced in concentrated animal feeding operations (CAFO). With concentrated animal operations, in turn comes concentrated manure accumulation, which can pose a threat of contamination of air, soil, and water if improperly managed. Animal Manure: Production, Characteristics, Environmental Concerns, and Management navigates these important environmental concerns while detailing opportunities for environmentally and economically beneficial utilization.

Author: Kathryn N. Higgs
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 134

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Book Description
A field study was conducted to assess phosphorus (P) and potassium (K) concentrations of both lactating and dry cow diets on Oregon's dairies. Thirty-seven dairy farms, located in western Oregon, were grouped according to geographic region, valley (V) or coast (C), and herd size, small (S) or large (L). Farms were visited on three separate occasions. During each visit, lactating and dry cow diets were recorded and corresponding feed ingredients were collected and analyzed for P and K. For each diet recorded, fecal and urine samples were collected and analyzed for P and K. When available, milk production data was obtained. During the initial visit, a survey was issued to producers to assess P and K knowledge as well as gather herd data and management information. Survey responses received indicated that two-thirds of participants were knowledgeable about P and its affects within the environment. Knowledge of K appeared to be less than that of P. Average P concentration of the lactating cow diet was 0.40% (DM basis) and did not differ between region (P=0.12) or herd size (P=0.76). Fecal P excretion did not differ between region (P=0.08) or herd size (P=0.27), however, a trend for larger fecal excretion in V farms contributed to the lower calculated apparent P digestibility for V than C. Potassium in lactating cow diet was greater (P=0.01) for C than V, however, but no difference between herd size (P=0.10) was determined. Overfeeding of K also occurred in dry cow diet with no difference between region (P=0.40) and herd size (P=0.72). Combining the fecal and urinary fractions, an individual lactating cow consuming 0.40% P (89.8 g) and 1.71% K (384.3 g) per day will excrete 24.0 kg of manure P and 76.3 kg of manure K annually. The magnitude of plant available P and K produced; requires Oregon producers to acquire additional land, an additional two-tenths ha/cow, to be to apply P and K at agronomic rates.

Author: Dorinha M. S. S. Vitti
Publisher: CABI
ISBN: 1845936272
Category : Animal nutrition
Languages : en
Pages : 190

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Book Description
This book contains 10 chapters that discuss phosphorus and calcium metabolism, efficiency of utilization, availability, requirements and excretion in livestock and environmental impact.

Author: Christian Schaum
Publisher: IWA Publishing
ISBN: 1780408358
Category : Science
Languages : en
Pages : 592

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Book Description
This comprehensive book provides an up-to-date and international approach that addresses the Motivations, Technologies and Assessment of the Elimination and Recovery of Phosphorus from Wastewater. This book is part of the Integrated Environmental Technology Series.

Author:
Publisher:
ISBN: 9781741061581
Category : Dairy farming
Languages : en
Pages : 7

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