Download or read book Studies on the Regulation of Milk Protein Concentration and Yield in Dairy Cows written by Timothy Ronald Mackle and published by . This book was released on 1999 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Milk Protein written by Narongsak Chaiyabutr and published by BoD – Books on Demand. This book was released on 2022-06-01 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Milk Protein - New Research Approaches discusses the biology and synthesis of milk protein at both the cellular and molecular levels. It also presents related information on animal nutrition and management, including animal breeding. It is a useful resource for students, researchers, and professionals in veterinary, dairy, food, and animal science, among others.

Download or read book Milk Secretion written by John Whittemore Gowen and published by . This book was released on 1924 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of the Protein Requirements of Dairy Cows written by Fritz Wilhelm Woll and published by . This book was released on 1910 with total page 54 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 Nutritional Perturbation of Milk Protein Content in the Lactating Dairy Cow written by John Paul Cant and published by . This book was released on 1992 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Milk Production written by Narongsak Chaiyabutr and published by BoD – Books on Demand. This book was released on 2012-09-26 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Book "Milk Production - Advanced Genetic Traits, Cellular Mechanism, Animal Nutrition and Management" is made for the publication of continuation of advances in the knowledge involving milk production. This book is divided into two main sections and is devoted to more specific consideration of areas with aspects of genetics factors and the molecular and cellular mechanisms, animal management, nutrition and husbandry. This book will be useful for students, researchers, teaching staff, practicing professionals connected with dairy science, animal science, food science, nutrition, physiology, biochemistry, veterinary medicine and other related fields. Each chapter in this book has an extensive bibliography which can future aid the reader in keeping abreast of the developments in this field.

Download or read book Protein Nutrition in Dairy Cows written by Paulina Letelier and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The release of N into the environment is having a severe negative impact in the ecosystems and human health. The dairy industry is under pressure to improve the N utilization and reduce the N losses to the environment. This work comprises 1 meta-analysis, and 2 cow experiments that aimed to study the effect of protein nutrition, amino acids (AA), and sampling methodologies on cow performance, and N utilization responses of lactating dairy cows. The meta-analysis was conducted to determine the association of plasma essential AA (EAA) profile with cow performance and plasma urea nitrogen (PUN). A hierarchical clustering revealed 2 plasma EAA clusters. Cows in cluster 1 had lower proportion of Leu and Val and greater proportion of Phe, Lys, Ile and Thr in total plasma EAA, greater milk, protein and fat yield and numerically lower PUN than cows in cluster 2. Our findings suggested the existence of an association between the plasma EAA profile and productive performance. The first cow experiment evaluated three protocols to determine urinary urea-N (UUN) excretion, the end-product of N metabolism in dairy cows. Urinary urea-N excretion was lower when determined by spot sampling compared to bladder catheterization or via an external collection cup device. Urinary urea-N and creatinine concentration were greater for spot sampling than for bladder catheterization. Urine specific gravity explained 66.5, 73.2, and 32.1% of the variation in urine output for bladder catheterization, collection cup and spot sampling, respectively. Increasing salt in the diet tended to increase urine output, decrease urinary urea concentration as well as milk protein concentration and yield. Finally, the last cow experiment evaluated production performance of dairy cows when fed 4 levels of dietary crude protein (CP) at different stages of lactation. Milk energy output was influenced by the interaction between dietary CP and stage of lactation. At 180 days in milk, feeding diets with more than 16.3% up to 17.4% CP marginally increased milk energy output from 31.5 to 32.6 Mcal/d. At 270 days in milk, the predicted responses of milk energy output to dietary CP decreased, resulting in a marginal improvement (24.5 vs. 25.8 Mcal/d) when cows were fed diet with more than 15.6% up to 16.9% CP. Nitrogen use efficiency linearly decreased with increasing levels of dietary CP.

Download or read book Effect of Dietary Manipulations on Milk Protein Yield and Concentration and Digestion and Metabolism of Dairy Cows written by Francis Patrick O'Mara and published by . This book was released on 1993 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nutrition and Lactation in the Dairy Cow written by Philip C. Garnsworthy and published by Butterworth-Heinemann. This book was released on 1988 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Protein Yield Content and Quality in Milk from Dairy Cattle written by Michael Mathias Schutz and published by . This book was released on 1988 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mammary Gland Factor in Relation to Milk Protein Production in Dairy Cattle written by Vickie Elaine Baracos and published by . This book was released on 1999 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Increased Metabolizable Protein in Fresh Dairy Cattle Throughout Peak Lactation written by Ethan Garrett Carder and published by . This book was released on 2016 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first few weeks after parturition in dairy cattle is a time marked by low, but increasing, feed intake and sharply increasing milk production. Because of low intake, nutrient density of the diet may need to be higher during this period to support increasing milk yields. We hypothesized that feeding higher levels of metabolizable protein (MP) and feeding supplemental rumen protected methionine and lysine would increase milk yield and protein concentration. The experiment consisted of 2 phases. Fifty-six Holstein cows (21 primiparous and 35 multiparous), starting at 3 DIM, were used in a randomized-block design with three diets (phase 1). At approximately 23 DIM, cows were moved into a free stall barn and fed the control diet (phase 2) to observe potential carry-over effects on production. Estimated DMI used in formulation was 17 kg/d. The treatments were control (16.5% CP, 10.9% RDP, 5.6% RUP, formulated for 25.1 kg/d MP allowable milk based on NRC model), high protein (HP; 18.5% CP,11.6% RDP, 6.9% RUP, 29.9 MP allowable milk), and amino acid treatment (MPAA; 17.5% CP, 10.5% RDP, 7.0% RUP 29.7 MP allowable milk). The MPAA diet included a proprietary spray-dried blood meal product (Perdue Agribusiness, Salisbury, MD) that provided 174 g/d and 62 g/d of dietary rumen-protected lysine and methionine, respectively, per the NRC model. The MP diet provided an estimated 156 g/d lysine and 45 g/d methionine, and the control diet provided 149 g/d lysine and 41 g/d methionine. Milk production and DMI were measured daily and milk was sampled for components on day 8, 15, and 20 during phase 1 and on day 30 during phase 2. Statistical model included parity, treatment, and week fixed effects, random effect of block, and cow as the experimental unit. In phase 1, treatment and treatment by parity interaction did not affect milk yield (33.6, 34.5, and 33.1 kg for Control, HP, and MPAA, respectively), DMI (17.8, 17.8, 18.5 kg/d for Control, HP, and MPAA, respectively), or milk protein yield (1.11 kg/d). Milk protein concentration was higher (3.30% vs 3.17% and 3.17%) for MPAA treatment as compared to the HP and control, respectively. Energy corrected milk (ECM) was higher (39.0 and 38.5 vs 35.2 kg) for MPAA and HP than for the control, respectively. MUN was higher (14.3 vs 12.7 and 11.5 mg/dl) for the Control compared to HP and MPAA. Plasma concentrations of Met were increased in HP and MPAA compared to the control, with MPAA being the highest. Plasma concentrations of 3-methylhistidine was decreased in HP and MPAA compared to the control. Production responses, for phases 1 and 2 combined, did not differ in HP and MPAA compared to the control. Overall, supplementing rumen-protected lysine and methionine with extra HP can increase ECM yield, milk protein concentration, and milk fat concentration and yield during the first 3 weeks of lactation.

Download or read book Effects of Glucose and Acetate Infusion on Milk Protein Yield and Related Gene Expression in Muscle and Mammary Glands of Lactating Dairy Cows written by Boning Li and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to explore hypotheses of the mechanism by which NEL stimulates MPY in cows and to determine if glucogenic and lipogenic substrates stimulate MPY by similar mechanisms. Five rumen-fistulated Holstein cows were randomly assigned to a 5 x 5 Latin square design. Treatments were CTL, LoG, HiG, LoA and HiA. Glucose infusion for 5 to 7 d tended to increase milk and protein yields and increased lactose yield. Milk yield, protein yield and lactose yield decreased during acetate infusion. Glucose infusion affected expression of mammary genes related to cell proliferation, differentiation and protein accretion capacity while supplement acetate affected expression of milk protein genes, and those related to protein accretion capacity and cell differentiation.

Download or read book The Effect of Dietary Protein Degradability and Undergradability on Milk Urea Nitrogen Milk NPN and Blood Urea Nitrogen in Lactating Dairy Cows written by Dwight Kenneth Roseler and published by . This book was released on 1990 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Influences on Fat and Protein Content of Milk in Dairy Cattle written by Roger Ronald Neitzel and published by . This book was released on 1967 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biology of Lactation written by Herbert-H Head and published by Quae. This book was released on 1999-01-01 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: A presentation of the most fundamental features of the biology of the mammary gland, a unique model of an organ capable of an abundant synthesis of proteins: endocrinology of lactation, role of prolactin, genetics and protein synthesis, immunology and the mammary gland, nutrition and dairy products. Readership: students, teachers, researchers, health and agriculture professionals. Lactation Biology was first published in French in 1993. The English version is not merely a translation: it has been updated by the author.