Diet by Supplemental Fat Interactions in Dairy Cattle PDF Download

Author: Silvia G. Onetti
Publisher:
ISBN:
Category :
Languages : en
Pages : 224

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Fat is added to diets of lactating dairy cattle as an affordable method of increasing the amount of energy available to the animals. Unsaturated fatty acids are desirable end-products of milk production. However, their presence in the rumen can be toxic to ruminal bacteria, which will then decrease digestion. Unsaturated fatty acids are biohydrogenated into saturated fatty acids by specific bacteria in the rumen, which will decrease positive benefits associated with their consumption. Our first study evaluates the efficiency of calcium salts VALFEED 100M and VALFEED 200 in protecting unsaturated fatty acids from biohydrogenation in the rumen and also observes the effects of these 'protected fats' on lactation performance. Twenty-eight Holstein cows in early lactation were divided equally into four different treatment groups: 1) Control (with no supplemental fat); 2) Prilled fat; 3) Calcium salt of VALFEED 100M; 4) Calcium salt of VALFEED 200. Fat supplements were added to diets in place of corn in the concentrate mix at 3.2% of total dry matter intake. Cows were housed in free stalls equipped with Calan gates. The cows were fed twice daily, at 0800 and 1500 in amounts to allow ad libitum consumption. Weekly feed samples were taken and dried in order to calculate daily dry matter intake. Milk production was measured daily, and milk fat and protein content were analyzed at days 30 and 90. Body weights were taken at the beginning (day 0) and the end (day 90) of the trial. Prilled and VALFEED 100M fat supplements decreased (P 0.05) dry matter intake. Body weights were higher (P

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

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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.

Author: William W. Christie
Publisher: Elsevier
ISBN: 1483152723
Category : Technology & Engineering
Languages : en
Pages : 461

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Lipid Metabolism in Ruminant Animals is a nine-chapter book that first discusses the anatomy, physiology, and microbiology of the ruminant digestive tract. Subsequent chapters center on lipid metabolism in the rumen; digestion, absorption and transport of lipids in ruminant animals; the composition, structure and function of lipids in the tissues of ruminant animals; and the effects of diet and other factors on the lipid composition of ruminant tissues and milk. Other chapters focus on lipid metabolism in the mammary gland, adipose tissue, liver, and other selected tissues of ruminant animals.

Author: Tamene Bayisa
Publisher: GRIN Verlag
ISBN: 3668660549
Category : Medical
Languages : en
Pages : 31

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Seminar paper from the year 2017 in the subject Veterinary medicine, Jimma University College of Agriculture and Veterinary Medicine, language: English, abstract: Objective of this review is focus on effect of feeding protected fat and protected protein on milk yield and its composition and how these nutrients are protected. Many researchers in this review investigate that the responses are highly dependent on the type of fat and protein supplement and the stage of lactation. A higher milk response was observed with saturated than with unsaturated fat supplements. Diet with added fat increase milk production compared with a control diet without added fat in cows. Feeding of bypass fat resulted in significant increase in milk yield and Fat Corrected Milk yield particularly in early lactation. The source of Protected fat are (origin (animal, plant, processed or whole oilseeds, calcium salts) and Cereal Grains such as corn, wheat, Barly, oil seeds, sun flower, cotton seed, soybeans and canola). The supplementation of protected protein in the diets of lactating animals increases the milk yield due to proportionate increase in the supply of amino acids to the host postruminally Milk yield in cows fed protected methionine for the whole experimental period was numerically higher than in cows of the other groups. However, the difference was not statistically significant .At the centeral high land of Ethiopia the Treatment of shredded wheat and barley straw with urea, molasses, salt and water prior to feeding is a technology that should be considered . Cows with excessive body tissue mobilisation at this stage may take up to 20 weeks to regain a positive energy balance status. Key words milk yield, composition ,protected fat , protein protected

Author: Alycia Marie Burch
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 113

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Addition of fat supplements to dairy cow diets is common practice due to increases in yields of milk and milk fat. This thesis contains two studies that evaluated the effects of palmitic (C16:0), stearic (C18:0), and oleic acids (cis-9 C18:1) on lactating dairy cows. The first experiment used three commercially available products to make custom blends containing 60% C16:0 + 30% C18:0 (PA+SA) and 60% C16:0 + 30% cis-9 C18:1 (PA+OA) supplied at 1.5% diet dry matter (DM) and a non-FA supplemented control (CON) diet fed to low- and high-producing dairy cows. The PA+OA treatment increased yields of milk, milk fat, and energy corrected milk (ECM) compared with CON for high-producing cows. In contrast, the PA+SA treatment increased yields of milk fat, milk protein, ECM, and 3.5% fat-corrected milk (FCM) compared with the PA+OA treatment in low-producing cows. The second experiment evaluated different ratios of C16:0 + cis-9 C18:1 in low fat (LF; average 2.40% FA content) and high fat (HF; average 3.28% FA content) diets. Fatty acid (FA) treatments were products consisting of 80% C16:0 + 10% cis-9 C18:1 (PA) and 60% C16:0 + 30% cis-9 C18:1 (PA+OA) supplemented at 1.5% diet DM and a non-FA supplemented control (CON) diet. Interactions were observed between basal diet and FA treatment with FA treatments increasing yields of milk and lactose in the LF diet but not in the HF diet. The HF diet increased yields of milk fat and FCM and tended to increase ECM. FA treatments increased yields of milk fat, ECM, and FCM, but were not different from each other. Results from this work can help further feeding decisions for nutritionists and producers.

Author: Lynette Elizabeth Goodling
Publisher:
ISBN:
Category :
Languages : en
Pages : 152

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Author: Bruce Linder Larson
Publisher:
ISBN:
Category : Lactation
Languages : en
Pages :

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Author: J. P. Felix D'Mello
Publisher: CABI
ISBN: 0851993788
Category : Nature
Languages : en
Pages : 450

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This book presents specially commissioned reviews of key topics in farm animal metabolism and nutrition, such as repartitioning agents, near infrared reflectance spectroscopy and digestibility and metabolisable energy assays, where major advances have recently been made or which continue to represent issues of significance for students and researchers. Authors include leading researchers from Europe, North America and Australia.

Author: Charles Karuku Gachuiri
Publisher:
ISBN:
Category :
Languages : en
Pages : 464

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