Download or read book Nutrient Utilization Lactational Performance and Profitability of Dairy Cows by Feeding Protein Supplements in High Forage Lactation Diets written by Kathryn Neal and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the increasing cost of soybean meal and concerns of excess N being excreted into the environment, new protein supplements have been developed. Two products that have shown potential in increasing N utilization efficiency are slow release urea (SRU; Optigen) and ruminal escape protein derived from yeast (YMP; DEMP). The objective of this study was to assess the effects of feeding these 2 supplements in high-forage [(54% of total dietary dry matter (DM)] dairy diets on nutrient utilization, feed efficiency, lactational performance of dairy cows, and their impacts on income-over feed costs. Twelve multiparous dairy cows were used in a triple 4 ©7 4 Latin square design with one square consisting of ruminally cannulated cows. Treatments included: 1) control, 2) SRU-supplemented total mixed ration (TMR, SRUT), 3) YMP-supplemented TMR (YMPT), and 4) SRU and YMP-supplemented TMR (SYT). The control consisted only of a mixture of soybean meal and canola meal (SBMCM) in a 50:50 ratio. The SRU and the YMP were supplemented at 0.49% and 1.15% DM, respectively. The experiment consisted of 4 periods lasting 28 d each (21 d of adaptation and 7 d of sampling). Cows fed YMPT and SYT had decreased intake of DM, and all supplemented treatments had lower crude protein intake compared to those fed the control. Milk yield tended to have the greatest increase in YMPT compared with the control (41.1 vs. 39.7 kg/d) as well as a tendency for increased milk fat and protein yields. Feed efficiencies based on yields of milk, 3.5% fat-corrected milk, and energy-corrected milk increased at 10-16% due to protein supplementation. Cows fed with protein supplements partitioned less energy toward body weight gain, but tended to partition more energy toward milk production. Efficiency of use of feed N to milk N increased by feeding SRUT and YMPT, and milk N-to-manure N ratio increased in YMPT. Cows fed SRUT or YMPT tended to improve income-over feed costs. Overall results from this experiment indicate that replacing SBMCM with SRU and YMP in high-forage dairy diets can be a good approach to enhance dairy profitability through improved nutrient utilization efficiencies by lactating dairy cows.
Download or read book Nutrition and Lactation in the Dairy Cow written by Philip C. Garnsworthy and published by Elsevier. This book was released on 2013-10-22 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrition and Lactation in the Dairy Cow is the proceedings of the 46th University of Nottingham Easter School in Agricultural Science. Said symposium was concerned with the significant advances in the field of nutrition and lactation in the dairy cow. The book is divided in five parts. Part I deals with the principles behind nutrition and lactation of cows. Part II discusses the cow’s nutrient interactions; responses to nutrients that yield protein and energy; and the influence of nutrient balance and milk yields. Part III tackles the efficiency of energy utilization in cows and its relation to milk production. Part IV talks about food intake of cows and the factors that affect it, while Part V deals with the different feeding systems for cows. The text is recommended for those involved in raising cows and dairy production, especially those who would like to know more and make studies about the relationship of nutrition and lactation of cows.
Download or read book Feeding Concentrates written by Roy Kellaway and published by Landlinks Press. This book was released on 2004 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents strategies for feeding energy and protein supplements to pasture-fed dairy cows and examines the potential economic benefits.
Download or read book Nutrient Requirements of Dairy Cattle written by National Research Council and published by National Academies Press. This book was released on 2001-02-09 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Effects of Dietary Forage and Protein Supplements on Production Nitrogen Utilization and Microbial Protein Synthesis in Lactating Dairy Cows written by André Fonseca de Brito and published by . This book was released on 2004 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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
Download or read book Utilization of Animal Protein Byproducts by Lactating Dairy Cows written by Melissa Lynne England and published by . This book was released on 1993 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Utilization of the Energy in Various Rations by Lactating Dairy Cows written by James Robb and published by . This book was released on 1967 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Responses in the Yield of Milk Constituents to the Intake of Nutrients by Dairy Cows written by Biotechnology and Biological Sciences Research Council (Great Britain). Technical Committee on Responses to Nutrients and published by Oxford University Press, USA. This book was released on 1998 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the energy and protein requirement systems for dairy cows currently used in Britain and presents a new approach, along with the outline of a model for its implementation. Current systems give little consideration to the responses of the animal to changes in the nutrient supply, or to interactions between dietary constituents in their effects on digestion and metabolism. Neither do they predict any effect on the partition of nutrient use between milk and body, or changes in the yields of milk fat, protein and lactose, which determine the commercial value of the milk. Therefore the systems, although not inaccurate, lack relevance to the current needs of UK milk producers. Models which embody concepts of nutrient supply and utilization are reviewed and their development as viable alternatives is considered. It is concluded that a new diet formulation system for dairy cows should aim to predict voluntary feed intake, the partition of nutrient use between milk production and tissue deposition, and the short and long-term of effects of nutrition on fat, protein and lactose yields. The physical and biological characteristics of the cow must also be recognized and incorporated into any model for response prediction. The report is also published in Nutrition Abstracts and Reviews - Series B: Livestock Feeds and Feeding. It is an authoritative review for advanced students, research workers and advisors in animal nutrition and in dairy science and technology.
Download or read book Recent Developments in Ruminant Nutrition 2 written by W. Haresign and published by Elsevier. This book was released on 2013-10-22 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Developments in Ruminant Nutrition – 2 presents papers that discuss the advances in the different areas of ruminant nutrition. The book is comprised of 22 chapters that discuss topics such as milk production, health, and nutrition. The coverage of the text includes meeting the nutrient requirements of beef cattle in forage-based systems of production; nutrient requirements of intensively reared beef cattle; and feeding for high margins in dairy cows. The book also tackles issues concerning milk production such as photoperiodic influences on milk production in dairy cows; manipulation of milk yield with growth hormone; and the influence of level and pattern of concentrate input on milk output. The text will be of great use to researchers and professionals in the animal husbandry industry.
Download or read book Improvement of Nutrient Utilization Efficiency Ruminal Fermentation and Lactational Performance of Dairy Cows by Feeding Birdsfoot Trefoil written by Rachael G. Christensen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Forages containing condensed tannins (CT) have potential to reduce the environmental impact of dairy farming. In 3 studies, I hypothesized that feeding CTcontaining birdsfoot trefoil (Lotus corniculatus, BFT) would result in improved nutrient utilization and lactational performance of dairy cows compared with control forages of the respective experiments. Improved milk components, reduction in waste N, and overall improved N efficiency were hypothesized for BFT-fed cows compared to those cows fed alfalfa hay (Study 1) or grass-based diets (Study 2). In addition, a decrease in in vitro methane production and improved rumen fermentation due to diets based on BFT pasture and concentrate supplementation compared with grass pasture-based diets was the hypothesis of the third study. Study 1 showed BFT-hay diets improved lactational performance through increased energy-corrected milk yield and increased milk protein yield, resulting in improved N utilization efficiency compared with the alfalfa hay diet. Total volatile fatty acids concentration tended to increase, and greater microbial protein yield was exhibited by cows fed BFT compared to other diets tested. Therefore, BFT can replace alfalfa hay in dairy diets and showed improved feed and N utilization efficiencies and lactational performance. Study 2 determined that pasture nutrient content increased for BFT pasture compared to the mixed grass control, contributing to increases in milk yield most weeks during the 2-year study. Energy-corrected milk yield increased most weeks by BFT-grazed cows due to increased milk yield, although milk protein concentration was similar between treatments. Cows grazing BFT pasture increased N efficiency coupled with decreased milk urea N secretion in the first, but not the second year, suggesting an environmental advantage over traditional grass-based pastures depending on the effect of growing conditions on pasture quality at time of grazing. Study 3 showed that offering BFT pasture to continuous cultures without or with barley grain or total mixed ration supplements reduced methane production and altered rumen microbial populations. The reduced methane production on the continuous cultures was likely due to direct and/or indirect effects of CT on rumen microbiota. Overall, diets including BFT showed improved nutritive, lactational, and environmental benefits by decreasing N waste and methane production over typical alfalfa hay-based dairy diets and grass pastures.
Download or read book Buffer Supplementation to High grain Diets Fed Lactating Dairy Cows written by Luis Carlos Solorzano and published by . This book was released on 1988 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protected Nutrient Technology For Crossbred Cattle written by Mane, S.H. and published by New India Publishing Agency. This book was released on 2016-07-21 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feeding management plays an important role in sustaining higher milk production in high producing dairy animals and especially nutrition during transition period of dairy animals during 3 weeks prior and 3 weeks after parturition is critically important to health, production and profitability of dairy. Nutrition and management of cows during the transition period has received tremendous interest in recent years in developed countries but relatively less attention is being paid in the developing countries like India. With understanding of role of energy and protein nutrition in managing the transition period some technologies like protected fat and protein alone or in combination has been practiced by few dairy farmers but many are still ignorant about it. The experimental results obtained with the use of these technologies have been discussed in greater depth in this book with emphasis on its profitable effect on early lactation performance and post partum reproduction. The role of energy nutrients as by pass fat and protein as by pass protein in isolation and in combination has also been discussed in the light of regaining the positive energy balance state after the parturition and its association with increased milk yield and improved post partum reproduction
Download or read book An evaluation of a liquid supplement for lactating dairy cows written by Erwin Emil Harbat and published by . This book was released on 1963 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lactational Performance of Dairy Cows Fed Yeast Derived Microbial Protein in Low and High Forage Diets written by Angela Kristia Manthey and published by . This book was released on 2014 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Feather Meal on Lactation Performance of Dairy Cows Fed Methionine Deficient Diets written by Sopaphan Pruekvimolphan and published by . This book was released on 2001 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimizing Dietary Crude Protein Level for Maximal Bacterial Protein Synthesis and Milk Production in Dairy Cows written by Jose de Jesus Olmos Colmenero and published by . This book was released on 2004 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
