Feed Into Milk

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

The book review the various milk production system according to agro-climate and technical, economical and sociological conditions, review new knowledge in ruminant digestion nutrition and physiology, match milk production systematic available and potential feed resources, taking into account their nutritional characteristics. The book make recommendations for the development of sustainable milk production systems based on locally available feed resources. Contents Chapter 1: Medium Terms Outlook for Dairying in the Developing Countries by W Krostitz, Chapter 2: The Lactating Cow in the Various Ecosystems: Environmental Effects on Its Productvity by H D Johnson, Chapter 3: Physiological Constraints to Milk Production: Factors which Determine Nutrient Partitioning, Lactation Persistency and Mobilization of Body Reserves by Y Chillard, Chapter 4: Influence of Nutrition on Reproductive Performance of the Milking/Gestating Cow in the Tropics by K H Lotthamer, Chapter 5: The Role and Mechanisms of Genetic Improvement in Production Systems Constrained by Nutritional and Environmental Factors by O Syrstad, Chapter 6: Matching Livestock Systems with Available Resources by T R Preston, Chapter 7: Nutritional Characteristics of Tropical Feed Resources: Natural and Improved Grasslands, Crop Residues and Agro Industrial by Products by M Chenost and R Sansoucy, Chapter 8: Feeding Strategies for Improving Milk Production of Dairy Animals Managed by Small Farmers in the Tropics by R A Leng, Chapter 9: Feeding Riverine Buffaloes for Milk/Dual Purpose Production by A M El Serafy, Chapter 10: Feeding Swamp Buffalo for Milk Production by S Khajarern and J M Khajarern, Chapter 11: Future Prospects for Fodder and Pasture Production by A Aminah and C P Chen, Chapter 12: Forage and Legumes as Proteing Supplements for Pasture Based Systems by F A Moog, Chapter 13: The Development of Dairy Farming in Thailand by S Pichet, Chapter 14: Milk Production Systems Based on Pasture in the Tropics by Roberto Garcia Trujillo, Chapter 15: Dairy Production in the Semi Arid Rangelands of West Africa by Modibo Traore, Chapter 16: Feeding Systems and Problems in he Indo Ganges Plain: Case Study by V C Badve, Chapter 17: Feeding Dairy Cattle in Tropical Region of China by Cheng Naging, Chapter 18: Milk Production Systems in Tropical Latin America by J I Restrepo, E Murgueitio and T R Preston, Chapter 19: Restricted Suckling in Dual Purpose Systems, Chapter 20: Heifer Rearing in the Tropics by J Ugarte, Chapter 21: Feeding Cows for Milk Production in the Arusha/Kilimanjaro Coffee/Banana Belt of Tanzania FAO Project: Assistance to Smallholders in Dairy Development: Case Study by L S Morungu, Chapter 22: Milk Production From Tropical Fodder and Sugarcane Residues Case Study: on Farm Research in Mauritius by A A Boodoo, Chapter 23: Training in the Development of Feed Resources by R W Froemert.

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.