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Author : Pieter van Beukelen
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (124 download)
Download or read book Studies on Milk Fat Depression in High Producing Dairy Cows written by Pieter van Beukelen and published by . This book was released on 1983 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309037956
Total Pages : 384 pages
Book Rating : 4.3/5 (9 download)
Download or read book Designing Foods written by National Research Council and published by National Academies Press. This book was released on 1988-02-01 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lively book examines recent trends in animal product consumption and diet; reviews industry efforts, policies, and programs aimed at improving the nutritional attributes of animal products; and offers suggestions for further research. In addition, the volume reviews dietary and health recommendations from major health organizations and notes specific target levels for nutrients.
Author : Hugo Alonso Ramirez Ramirez
Publisher :
ISBN 13 : 9781303695872
Total Pages : 173 pages
Book Rating : 4.6/5 (958 download)
Download or read book Dietary Factors that Induce Milk Fat Depression in Dairy Cows Consuming Dried Distillers Grains with Solubles written by Hugo Alonso Ramirez Ramirez and published by . This book was released on 2014 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Allan N. Bringe
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (89 download)
Download or read book Studies on Prevention of Milk Fat Depression in the Ruminant written by Allan N. Bringe and published by . This book was released on 1968 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Reilly Pierce
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)
Download or read book Investigating the Behavior of Fatty Acids and Fat Supplements in the Rumen of Dairy Cattle and the Effects on Milk Fat Production written by Reilly Pierce and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dietary fat is an important component on the diets of lactating dairy cattle. Concentration of dietary fat can be increase by feeding oilseeds or enriched fat supplements which allows cattle to partition energy differently which can lead to increases in milk fat concentration, milk fat yield, or milk yield. One common oilseed fed to dairy cattle is cottonseed, as it is high in fiber but also relatively high in fat compared to other common feedstuffs. Fat supplements are very high in fat (>95%) but are more expensive so dairy producers often strike a balance and may feed both fat supplements and oilseeds to dairy cattle. The first objective of this thesis was to investigate the effects of cottonseed on milk production in dairy cattle. Previous research feeding cottonseed fed inclusion rates of cottonseed in excess of 15% of dry matter intake (DMI), but cattle were producing less milk and consuming less so therefore, the actual mass of the cottonseed consumed may not be as high as contemporary dairy cattle. This thesis fed cottonseed at up to 9.9% of DMI and found that cottonseed inclusion into the diets of multiparous cattle did not affect milk yield or milk composition but led to a decrease in DMI indicating that it could be safely fed to mature cows. In primiparous cattle, cottonseed inclusion induced milk fat-depression, indicating that the level of unsaturated fatty acids in the diet was greater than the biohydrogenation potential of the ruminal microbes of these animals. The second part of this thesis was to examine the effects of increased concentrations of an unsaturated fatty acid (cis-9 C18:1; oleic acid) in a prilled fat supplement on the milk production and milk composition in dairy cows. Previous research suggests that oleic acid may increase digestibility of dietary fatty acids and consequently increase the amount of preformed fat for milk fat synthesis. This experiment indicated that fat supplementation in multiparous cows may decrease milk yield and DMI but was no effect of increased levels of oleic acid on other production components in dairy cattle. Further investigation of the data collected for each half of the thesis is required to determine the effects on the respective methods of fat supplementation on fatty acid digestibility in lactating dairy cattle.
Author : Christine Anne Barney
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.E/5 ( download)
Download or read book Forage to Concentrate Ratios written by Christine Anne Barney and published by . This book was released on 1985 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309031818
Total Pages : 169 pages
Book Rating : 4.3/5 (9 download)
Download or read book Effect of Environment on Nutrient Requirements of Domestic Animals written by National Research Council and published by National Academies Press. This book was released on 1981-02-01 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : INRA
Publisher : BRILL
ISBN 13 : 908686872X
Total Pages : 639 pages
Book Rating : 4.0/5 (868 download)
Download or read book INRA feeding system for ruminants written by INRA and published by BRILL. This book was released on 2023-11-27 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Young W. Park
Publisher : John Wiley & Sons
ISBN 13 : 1118534204
Total Pages : 1063 pages
Book Rating : 4.1/5 (185 download)
Download or read book Milk and Dairy Products in Human Nutrition written by Young W. Park and published by John Wiley & Sons. This book was released on 2013-04-09 with total page 1063 pages. Available in PDF, EPUB and Kindle. Book excerpt: Milk is nature’s most complete food, and dairy products are considered to be the most nutritious foods of all. The traditional view of the role of milk has been greatly expanded in recent years beyond the horizon of nutritional subsistence of infants: it is now recognized to be more than a source of nutrients for the healthy growth of children and nourishment of adult humans. Alongside its major proteins (casein and whey), milk contains biologically active compounds, which have important physiological and biochemical functions and significant impacts upon human metabolism, nutrition and health. Many of these compounds have been proven to have beneficial effects on human nutrition and health. This comprehensive reference is the first to address such a wide range of topics related to milk production and human health, including: mammary secretion, production, sanitation, quality standards and chemistry, as well as nutrition, milk allergies, lactose intolerance, and the bioactive and therapeutic compounds found in milk. In addition to cow’s milk, the book also covers the milk of non-bovine dairy species which is of economic importance around the world. The Editors have assembled a team of internationally renowned experts to contribute to this exhaustive volume which will be essential reading for dairy scientists, nutritionists, food scientists, allergy specialists and health professionals.
Author : Tamene Bayisa
Publisher : GRIN Verlag
ISBN 13 : 3668660549
Total Pages : 31 pages
Book Rating : 4.6/5 (686 download)
Download or read book Review on Effect of Feeding Dairy Cow with Protected Fat and Protein on milk Yield and its Composition written by Tamene Bayisa and published by GRIN Verlag. This book was released on 2018-03-13 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Trevor Walworth Goodwin
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.3/5 (91 download)
Download or read book Biochemistry of Lipids written by Trevor Walworth Goodwin and published by . This book was released on 1974 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Haresign
Publisher : Elsevier
ISBN 13 : 148310026X
Total Pages : 200 pages
Book Rating : 4.4/5 (831 download)
Download or read book Recent Advances in Animal Nutrition written by W. Haresign and published by Elsevier. This book was released on 2013-10-22 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Advances in Animal Nutrition-1981 is a collection of papers that discusses the effects of dietary fat on milk composition, relating it to the biochemistry of fat synthesis in the mammary gland. The influence of concentrates on milk composition as well as the pattern and level of concentrate feeding on milk output are also covered. The book describes the need for better utilization of grass and grass products in dairy production, the mineral and trace element requirements of pigs; the importance of anion-cation balance in poultry diets and its effects on performance levels; and the selenium and cobalt requirements of ruminants. The problems of medicinal residues in animal products and the toxicological effects of aflatoxin residues in animal products are also considered. People involved in agriculture, dairy production and animal nutrition will find the book useful.
Author : Bert Sels
Publisher : Royal Society of Chemistry
ISBN 13 : 1849739005
Total Pages : 266 pages
Book Rating : 4.8/5 (497 download)
Download or read book Conjugated Linoleic Acids and Conjugated Vegetable Oils written by Bert Sels and published by Royal Society of Chemistry. This book was released on 2014-08-07 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of all different aspects of CLA, and summarises the chemistry of their various applications.
Author : Todd M. Owens
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (53 download)
Download or read book Risk of Milk Fat Depression for Dairy Cows Fed High Moisture Corn and Distillers Grains in Diets Containing Monensin written by Todd M. Owens and published by . This book was released on 2009 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 306 pages
Book Rating : 4.:/5 (137 download)
Download or read book CONTROLLED MILK FAT DEPRESSION AS A MANAGEMENT TOOL TO IMPROVE ENERGY BALANCE IN LACTATING DAIRY CATTLE. written by and published by . This book was released on 2005 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research conducted for this dissertation had three goals; 1) determine if CLA can induce milk fat depression immediately postpartum, 2) determine if CLA can alter energy availability, 3) determine the mechanism behind the mammary gland's decreased sensitivity to CLA immediately postpartum. The first study provides strong evidence indicating CLA can decrease milk fat synthesis immediately postpartum, but the dose required is approximately 3x greater than in established lactation. This trial also provided evidence that CLA can alter energy status, as CLA decreased days to EBAL nadir by nearly 5 days. This is relevant as recovery of EBAL from its lowest point provides an important signal for initiating ovarian activity and days to nadir is highly correlated with days to first ovulation. Study two was designed to determine if CLA induced milk fat depression could improve energy status during heat stress. Rumen-inert CLA reduced milk fat synthesis, and was able to improve energy availability, but did not increase milk yield or yield of other milk components. Although production was unchanged in this study, the study did provide further evidence that rumen-inert CLA can alter energy availability. Study three utilized intravenous infusion of CLA in cows in mid and early lactation to determine the mechanism for the mammary gland's decreased sensitivity in early lactation. It is postulated that increased fatty acid oxidation and subsequent enhanced levels of circulating NEFA present during the transition period competitively prevent adequate CLA uptake by the mammary gland. In the current study, trans-10, cis-12 CLA concentration in milk was not different between early and established lactation, while milk fat yield was drastically reduced on d 4 and 5 of trans-10, cis-12 CLA infusion in mid lactation cows, but unaltered in early lactation. Further, NEFA levels were nearly 3 fold higher in early lactation than in mid lactation, providing further evidence that increased circulating NEFAs in early lactation are unlikely to be the source of the mammary gland's decreased sensitivity during this time. Do to the variation in gene expression observed in this trial, we were unable to make any definitive conclusions as to the sensitivity of the expression of genes involved in milk lipid synthesis to CLA in early vs. mid lactation.
Author : Michel Baldin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (992 download)
Download or read book Effect of Dietary Interventions on Ruminal Biohydrogenation and Milk Fat Depression in Lactating Holstein Cows written by Michel Baldin and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduced milk fat still represents an issue on many dairy farms. Inhibition of milk fat synthesis is normally caused by bioactive trans fatty acids (FA) formed during ruminal biohydrohenation (BH), and this condition is called BH-induced milk fat depression (MFD). Contemporary lactating diets rich in corn feeds increase risk of BH-induced MFD. This may be because corn is rich in linoleic acid (LA), the parent compound for the formation of trans FA the cause MFD. This dissertation first demonstrates that considerable variation in LA concentration exists amongst commercially available corn hybrids. The variation was mainly attributed to hybrid and selection should focus on LA as a percentage of total FA, as this trait was not correlated with other nutrients important to the cow. Secondly, it was demonstrated that MFD is a multifactorial condition and that important interactions exist between dietary risk factors, individual cow effects, and feed additives. Supplementation with the methionine analog 2-hydroxy-4-(methylthio)butanoate (HMTBa) maintained higher milk fat when high producing cows received diets with increased risk of BH-induced MFD. Low producing cows did not undergo MFD, nor did their milk fat respond to HMTBa supplementation. Thirdly, it was demonstrated that an in vivo BH assay utilizing a perturbation tracee approach performed by bolusing FA through the rumen cannula was appropriate to assess the rate and extent of ruminal unsaturated FA BH as well as flux through specific BH pathways. Lastly, decreased BH-induced MFD with HMTBa supplementation was replicated and using the in vivo assay developed it was shown that the mechanism by which HMTBa prevents ruminal formation of bioactive trans FA is, at least in part, due to increased BH capacity. In conclusion, this dissertation presented opportunities to combat MFD by selection of corn hybrids low in LA and supplementation with HMTBa. Additionally, this work sets the framework for further research on milk fat by presenting an experimental design that efficiently investigates the interactions between risk factors and a novel in vivo assay appropriate to study ruminal BH.
Author : Silvia G. Onetti
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (89 download)
Download or read book Diet by Supplemental Fat Interactions in Dairy Cattle written by Silvia G. Onetti and published by . This book was released on 2003 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
