Lactation Response of Dairy Cows Fed Distillers Grains Versus Oilseed Meals PDF Download

Author: Keith Allan Christen
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 104

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Author: David Stehr
Publisher:
ISBN:
Category : Holstein-Friesian cattle
Languages : en
Pages : 248

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Book Description

Author: Colin O. L. E. Johnson
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 220

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Author:
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 40

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Author: Richard Arnold Everson
Publisher:
ISBN:
Category :
Languages : en
Pages : 474

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Author: Hugo Alonso Ramirez Ramirez
Publisher:
ISBN: 9781303695872
Category :
Languages : en
Pages : 173

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Book Description
Research has shown that dairy diets may contain up to 30% corn dried distillers grains with solubles (DDGS, interestingly, field experiences commonly report that milk fat depression (MFD), a disorder characterized by a sharp reduction in milk fat concentration and yield without affecting other productive traits, when feeding DDGS. The research described herein focused on the effects of feeding DDGS on MFD in dairy cows. Experiment 1 evaluated the effects of feeding high levels of corn oil and starch in diets containing 20% DDGS. The inclusion of corn oil or starch did not affect milk production but resulted in MFD; the combination of these two factors had additive negative effects that exacerbated the MFD response. Ruminal pH was similar across treatments. The results showed a shift in the ratio of acetate to propionate and suggest altered metabolism of unsaturated fatty acids that resulted in diet-induced MFD. Experiment 2 evaluated the effects of feeding reduced-fat DDGS (RFDDGS) as an alternative to lessen the risk of MFD and determine its effects on bacterial community structure. Milk yield was not affected by treatment. Feeding a control diet and RFDDG and resulted in greater concentration and yield of fat compared with DDGS. Proportions of Firmicutes decreased 9 h postfeeding and increased to the initial level by 23 h, conversely Bacteroidetes increased 9 h postfeeding. These results indicate that diurnal variation in bacterial community composition as well as diet-induced structural changes may affect animal performance. Experiment 3 examined the effects of feeding short and long particles of grass hay in combination with corn oil on milk production and composition. The smaller particle size reduced rumination time and increased ruminal rate of passage. There were no effects on dry matter intake and milk production. Milk composition was negatively affected in cows consuming fine particles in combination with corn oil as they exhibited MFD; this response was partially reversed by long particles. These results underscore the importance of providing dairy cows with adequate physically effective fiber in diets formulated to contain high levels of oil.

Author: Sopaphan Pruekvimolphan
Publisher:
ISBN:
Category :
Languages : en
Pages : 142

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Author: INRA
Publisher: BRILL
ISBN: 908686872X
Category : Medical
Languages : en
Pages : 639

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Book Description
The INRA Feeding System for Ruminants has been renewed to better address emerging challenges for animal nutrition: prevision of productive responses, product quality, animal health and emissions to the environment, in a larger extent of breeding contexts. The new system is mainly built from meta-analyses of large data bases, and modelling. The dietary supply model accounts for digestive interactions and flows of individual nutrients, so that feed values depend on the final ration. Animal requirements account for variability in metabolic efficiency. Various productive and non-productive animal responses to diets are quantified. This book presents the whole system for dairy and meat, large and small ruminant production, including specificities for tropical and Mediterranean areas. The first two sections present biological concepts and equations (with their field of application and statistical accuracy) used to predict intake (including at grazing) and nutrient supply (Section 1), animal’s requirements and multiple responses to diets (Section 2). They apply to net energy, metabolisable protein and amino acids, water, minerals and vitamins. Section 3 presents the use of concepts and equations in rationing with two purposes: (1) diet calculation for a given performance objective; and (2) prediction of the multiple responses of animal to diet changes. Section 4 displays the tables of feed values, and their prevision. All the equations and concepts are embedded in the fifth version of INRAtion® software for practical use.

Author: H. H. Van Horn
Publisher: American Dairy Science Association
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 848

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Book Description

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309069971
Category : Technology & Engineering
Languages : en
Pages : 406

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Book Description
This widely used reference has been updated and revamped to reflect the changing face of the dairy industry. New features allow users to pinpoint nutrient requirements more accurately for individual animals. The committee also provides guidance on how nutrient analysis of feed ingredients, insights into nutrient utilization by the animal, and formulation of diets to reduce environmental impacts can be applied to productive management decisions. The book includes a user-friendly computer program on a compact disk, accompanied by extensive context-sensitive "Help" options, to simulate the dynamic state of animals. The committee addresses important issues unique to dairy science-the dry or transition cow, udder edema, milk fever, low-fat milk, calf dehydration, and more. The also volume covers dry matter intake, including how to predict feed intake. It addresses the management of lactating dairy cows, utilization of fat in calf and lactation diets, and calf and heifer replacement nutrition. In addition, the many useful tables include updated nutrient composition for commonly used feedstuffs.