Author: M. A. Baset
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659232718
Category :
Languages : en
Pages : 96
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Book Description
Feeding practices followed by farmers in different feed bases and seasons were based on rice straw, small quantities of green grasses from various sources with small supplementation of concentrates. Milk urea nitrogen (MUN) concentration was higher under good base (38.86 mg/dl) than poor feed base condition (28.55 mg/dl). MUN of the local and crossbred cow was found 31.97 and 35.44 mg/dl, respectively. Milk protein was positively correlated with milk yield. MUN increased linearly from 16.79 to 22.46 mg/dl as dietary rumen degradable protein was increased from the lowest (-25%RDP) to the highest (+25%RDP) levels. Urea concentration was 16.97 % higher in +25%RDP and 12.55 % lower in -25%RDP compared to control diet (19.20 mg/dl). The dietary CP and rumen degradable protein had positive impact on milk yield, milk composition and milk urea nitrogen. It was found that feeding dietary rumen degradable protein up to a level of 789 g/d had a significantly positive impact on MUN level, but diets having required level of rumen degradable protein for feeding dairy cows in local condition need to be confirmed through further research.
Author: Hélène Lapierre
Publisher: BRILL
ISBN: 9086868320
Category : Technology & Engineering
Languages : en
Pages : 384
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Book Description
Development in agricultural sciences, particularly in farm animal sciences, resulted in the increased productivity to meet the demand for high quality and relatively cheap protein sources for human nutrition. In parallel, this increased productivity challenges the adequate supply of nutrients, including protein and energy, needed to cover not only high performances, but also insure animal health and welfare, reproduction and quality of products in a sustainable environment. The precise understanding of the animal biology is crucial for animal health and welfare, sustainable animal production, and health of animal product consumers. This book focuses on combining basic and applied research and its practical applications. To achieve these goals, many important topics are presented and discussed in detail. The most important issues in this book are: physiological aspects of protein and energy metabolism and nutrition; animal health and welfare metabolic related issues; effect of feeds and feed processing on energy and protein digestion and metabolism; methodological aspects of research on protein and energy metabolism; environment protection and enhancement of the quality and health-promoting features of animal products. This book constitutes a good source of knowledge for those who like to be up to date with the newest trends and findings in energy and protein metabolism in farm animals.
Author: Philip C. Garnsworthy
Publisher: Elsevier
ISBN: 1483100189
Category : Technology & Engineering
Languages : en
Pages : 442
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Book Description
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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The objectives of this study were to estimate the heritability of milk urea nitrogen concentration (MUN), describe the genetic and phenotypic relationships between MUN and reproductive performance, and estimate correlations among MUN breeding values and Danish breeding values for disease in Holsteins. Dairy Records Management Systems in Raleigh, NC provided lactation data. The Danish Agricultural Advisory Center provided breeding value estimates for disease. Heritabilities, genetic correlations and phenotypic correlations were estimated with an animal model using ASREML. Infrared (IR) and wet chemistry (WC) data were analyzed separately. Heritabilities were estimated with all lactations, as well as separately for parities one and two. Genetic and phenotypic correlations were estimated separately for parities one and two. Herd-test-day effects, age at calving, and days in milk were included in all models. Heritability estimates for WC MUN were 0.15 for all lactations, 0.14 for first lactation, and 0.09 for second lactation. Heritability estimates for IR MUN were 0.22 for all lactations, 0.22 for first lactation, and 0.23 for second lactation. Genetic correlations between first and second lactation MUN values were greater than 0.97 for both WC and IR. Genetic correlations for WC MUN and various measures of reproductive performance, including days to first service (DFS), first service conception (FSC), services per conception (SPC), and interval from first service to conception (IFC), were generally found to be not different from zero. The genetic correlation between WC MUN and days open (DO) in first lactation was 0.21, and between WC MUN and DO in second lactation, was 0.41, indicating higher WC MUN values were associated with increased days open. Phenotypic correlations were near zero for all measures. Genetic and phenotypic correlations for IR MUN and reproductive performance measures were not reported due to limited number of observations. Correlations among MUN breeding value estimates and Danish disease breeding values identified no significant relationships. Further investigations to identify possible non-linear relationships between MUN breeding values and Danish disease breeding values revealed no significant trends. While the results of this study indicate that heritable variation for MUN exists, the inability to identify significant genetic relationships to metabolic disease, reproductive performance, or foot and leg disease appear to greatly limit its use in selection for dairy cattle improvement in these areas at the present time.
Author: Richard M. Hopper
Publisher: John Wiley & Sons
ISBN: 1118470850
Category : Medical
Languages : en
Pages : 2206
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Book Description
Bovine Reproduction is a comprehensive, current reference providing information on all aspects of reproduction in the bull and cow. Offering fundamental knowledge on evaluating and restoring fertility in the bovine patient, the book also places information in the context of herd health where appropriate for a truly global view of bovine theriogenology. Printed in full color throughout, the book includes 83 chapters and more than 550 images, making it the most exhaustive reference available on this topic. Each section covers anatomy and physiology, breeding management, and reproductive surgery, as well as obstetrics and pregnancy wastage in the cow. Bovine Reproduction is a welcome resource for bovine practitioners, theriogenologists, and animal scientists, as well as veterinary students and residents with an interest in the cow.
Author: Roumiana Tsenkova
Publisher: Springer Nature
ISBN: 9811671141
Category : Science
Languages : en
Pages : 332
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Book Description
This book is the result of more than 20 years of experience in working with near-infrared spectroscopy for raw milk analysis. The totality of this work presents extensive possibilities for milk spectral measurements that can be carried out in dairy. Moving beyond the standard milk components such as fat, protein, or lactose, this book presents near-infrared spectroscopy as a method that can also be used in disease diagnostics. The measurements and experimental results presented here are all based on the utilization of usually neglected near-infrared regions—regions with strong absorbance of water. The author has found the water – light interaction discussed to be an immensely rich source of information, not only on milk composition but also on the physiological status of the animals involved. A special section of the book is dedicated to exploration of potential interfering factors that may influence the analysis and contribute to the robustness of the models. The research described in this book served as a basis for the development of the novel discipline aquaphotomics and is of interest to anyone working in this field.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
A proper balance of protein & energy, or more specifically rumen degradable protein & rapidly fermentable carbohydrate, allows cows to make the best possible use of protein in the diet. This could mean higher production, lower feed costs, and less environmental impact from nitrogen in manure. Monitoring urea nitrogen concentration is an effective way to determine whether dietary protein & energy are in proper balance. This bulletin describes ways to test for urea concentrations, the effects of various dietary factors on milk urea nitrogen concentration, the variation in concentration by season & stage of lactation, the timing of urea sampling, and the frequency & cost of testing. It also includes a table showing the crude protein content of common feed ingredients and their rate of protein degradability.
Author: John Bibby
Publisher: John Wiley & Sons
ISBN:
Category : Mathematics
Languages : en
Pages : 200
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Book Description
Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.
Author: Mario Luiz Chizzotti
Publisher: Brill Wageningen Academic
ISBN: 9789086863402
Category : Animal nutrition
Languages : en
Pages : 0
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Book Description
Variations in feeding frequency may lead to difference in utilization of dietary nutrients. The effects of feeding frequency have been tested in growing pigs and finishing pigs using respiratory quotient and postprandial kinetics of plasma metabolites. A reduced feeding frequency resulted in an increased lipogenesis and proteolysis shortly after the meal both in growing and finishing pigs. Nevertheless, growing and finishing pigs exhibit different metabolic pathways when feeding frequency is reduced.
Author: Heidi M. Waldrip
Publisher: John Wiley & Sons
ISBN: 0891183701
Category : Technology & Engineering
Languages : en
Pages : 448
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Book Description
The majority of meat, milk, and eggs consumed in the United States are produced in concentrated animal feeding operations (CAFO). With concentrated animal operations, in turn comes concentrated manure accumulation, which can pose a threat of contamination of air, soil, and water if improperly managed. Animal Manure: Production, Characteristics, Environmental Concerns, and Management navigates these important environmental concerns while detailing opportunities for environmentally and economically beneficial utilization.
