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Genetic Analysis Of Lifetime Production And Reproduction Traits Of Dairy Cattle
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Book Synopsis Genetic Analysis of Lifetime Production and Reproduction Traits of Dairy Cattle by : Ranjodhan Singh Sahota
Download or read book Genetic Analysis of Lifetime Production and Reproduction Traits of Dairy Cattle written by Ranjodhan Singh Sahota and published by . This book was released on 1978 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic analysis of reproductive traits in livestock by : Aixin Liang
Download or read book Genetic analysis of reproductive traits in livestock written by Aixin Liang and published by Frontiers Media SA. This book was released on 2023-02-14 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Breeding of Dairy Cattle by : Julius Van der Werf
Download or read book Advances in Breeding of Dairy Cattle written by Julius Van der Werf and published by . This book was released on 2019 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Breeding for Lifetime Performance in Dairy Cattle by : Erling Strandberg
Download or read book Breeding for Lifetime Performance in Dairy Cattle written by Erling Strandberg and published by . This book was released on 1991 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Analysis of Production, Fertility and Health Traits of Dairy Cows by : Rashid Hussain Pirzada
Download or read book Genetic Analysis of Production, Fertility and Health Traits of Dairy Cows written by Rashid Hussain Pirzada and published by . This book was released on 2001 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Analysis of Reproductive Measures in Dairy Cows and Their Relationship with Milk Production by : Felix Eduardo A. Beltramino
Download or read book Genetic Analysis of Reproductive Measures in Dairy Cows and Their Relationship with Milk Production written by Felix Eduardo A. Beltramino and published by . This book was released on 1984 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Trends and Relationships of Production and Reproduction in Guernsey Dairy Cattle by : Suleiman Abukres Hermas
Download or read book Genetic Trends and Relationships of Production and Reproduction in Guernsey Dairy Cattle written by Suleiman Abukres Hermas and published by . This book was released on 1984 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Analysis of Daily Milk Yield Variability in Holstein Dairy Cattle by : Victoria Moncur
Download or read book Genetic Analysis of Daily Milk Yield Variability in Holstein Dairy Cattle written by Victoria Moncur and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increased availability of daily milk yield measurements, data exists for analyses of additional traits that could be related to health and fertility. The objective of this thesis was to determine if day-to-day variation in milk yield is heritable, how it is correlated with daily milk yield (dMY), and how it is correlated with commonly measured production, health, and fertility traits. 789,266 dMY records were retrieved from 5 to 305 days in milk (DIM) for 2,366 lactations among 1,184 Holsteins. dMY was merged with the previous days milk yield (pMY) to derive the absolute value of dMY - pMY (ABS), and relative change in milk yield (REL), which was ABS/pMY. The average REL, ABS and dMY for four lactation segments were calculated and included in a series of single-step genomic evaluations in ASReml. Three-trait models with lactation segments of 5 to 50 DIM, 51 to 100 DIM, and 101 to 200 DIM were fit separately for dMY, ABS, and REL; this was followed by a series of two-trait models of DIM 5 to 200 with one of 5 to 50 DIM, 51 to 100 DIM, or 101 to 200 DIM for dMY, ABS, and REL. Finally, a three-trait model of dMY, ABS, and REL from 5 to 200 DIM was fit. The fixed effects included lactation group (lactations 1, 2, 3), age at calving, and year-season of calving while the random effects included the genomic relationship effect, permanent environment, and residual error. The genomic relationship matrix was generated with PREGSF90 and included 7007 animals of which 516 had 40K SNP genotypes and phenotypic records. Genomic estimated breeding values (gEBV) for dMY, ABS, and REL from 642 cows with genotypes were merged with their official genomic predicted transmitting abilities (gPTA) for several traits from Council on Dairy Cattle Breeding national genetic evaluations. All traits were heritable across all segments with dMY generally having the highest heritability (23% for 5 to 200 DIM) and REL having the lowest (16% for 5 to 200 DIM). Genetic correlations within trait indicated that variable milk yield in early lactation was strongly correlated with variable day-to-day yield for the remainder of lactation. Variation defined as ABS was strongly correlated with both dMY (0.73 from 5 to 200 DIM) and REL (0.62 from 5 to 200 DIM), where dMY and REL were independent (-0.08 from 5 to 200 DIM). Higher gEBV for dMY, ABS, or REL was unfavorably correlated with gPTA for health and fertility traits such as daughter pregnancy rate or somatic cell score. In conclusion, daily milk yield variability was heritable, and REL was more independent of milk yield than ABS. Milk yield variability was also associated with unfavorable health and fertility outcomes. Genome wide association analysis suggests that milk yield variability is largely polygenic but with some influence from major genes.
Book Synopsis Genetic Analysis of Production and Reproduction Traits in Pure Bred Indigenous Cattle and Their Crosses with Friesian by : Rajani Kant Misra
Download or read book Genetic Analysis of Production and Reproduction Traits in Pure Bred Indigenous Cattle and Their Crosses with Friesian written by Rajani Kant Misra and published by . This book was released on 1973 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Analysis of Productive and Reproductive Traits in Friesian Sahiwal Crossbred Dairy Cattle by : HASSANI S
Download or read book Genetic Analysis of Productive and Reproductive Traits in Friesian Sahiwal Crossbred Dairy Cattle written by HASSANI S and published by . This book was released on 2000 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Analysis of Production and Reproduction Traits in Dure Bred Ingnigenous Cattle and Their Crosses with Feriesian by : Mishra.Rajani Kant
Download or read book Genetic Analysis of Production and Reproduction Traits in Dure Bred Ingnigenous Cattle and Their Crosses with Feriesian written by Mishra.Rajani Kant and published by . This book was released on 1973 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Breeding, Genetics and Safety Production of Dairy Cattle by : Zhi Chen
Download or read book Breeding, Genetics and Safety Production of Dairy Cattle written by Zhi Chen and published by Mdpi AG. This book was released on 2023-08-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integration of various omics information-such as DNA, RNA, protein, and epigenetic regulation-brings new opportunities for the mining of important economic traits of animals and the analysis of molecular genetic mechanisms. Over the last three decades, world milk production has increased by more than 59%, from 530 million tonnes to 843 million tonnes. However, the genetic mechanisms behind milk fat traits remain largely undetermined. Milk is rich in fatty acids, proteins, and eight essential amino acids needed by the human body. The fatty acids in milk, namely, dodecylic acid, myristic acid, stearic acid, and palmitic acid, are the main energy substances in the human body, accounting for approximately 5, 10, 8, and 27 % of total fatty acids, respectively. Thus, decoding the genetics of milk fat traits can have a potential impact on product development, international trade, and consumption of milk components. This Special Issue focuses on applying the aforementioned advances to explore gene regulation and its molecular mechanisms in milk fat traits. The topics include but are not limited to: Research and application surrounding the genetic basis of important milk fat traits; Mining and function of excellent genetic resources for milk fat traits; Genetics of nutrition metabolism regulation and efficient production of milk fat; Epigenetic research on genes implicated in milk fat traits; High-throughput sequencing research surrounding genetics of milk fat traits; Construction of gene (including circRNA, lincRNA, miRNA, and mRNA) expression regulatory network maps.
Book Synopsis Adaptation and Fitness in Animal Populations by : Julius van der Werf
Download or read book Adaptation and Fitness in Animal Populations written by Julius van der Werf and published by Springer Science & Business Media. This book was released on 2008-10-17 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fitness and adaptation are fundamental characteristics of plant and animal species, enabling them to survive in their environment and to adapt to the inevitable changes in this environment. This is true for both the genetic resources of natural ecosystems as well as those used in agricultural production. Extensive genetic variation exists between varieties/breeds in a species and amongst individuals within breeds. This variation has developed over very long periods of time. A major ongoing challenge is how to best utilize this variation to meet short-term demands whilst also conserving it for longer-term possible use. Many animal breeding programs have led to increased performance for production traits but this has often been accompanied by reduced fitness. In addition, the global use of genetic resources prompts the question whether introduced genotypes are adapted to local production systems. Understanding the genetic nature of fitness and adaptation will enable us to better manage genetic resources allowing us to make efficient and sustainable decisions for the improvement or breeding of these resources. This book had an ambitious goal in bringing together a sample of the world’s leading scientists in animal breeding and evolutionary genetics to exchange knowledge to advance our understanding of these vital issues.
Book Synopsis Genetic and Non-Genetic Factors Affecting Production and Reproduction Traits in Dairy Cattle by : MOHAMED MOSTAFA ABD EL RAHMAN (Kand.t.)
Download or read book Genetic and Non-Genetic Factors Affecting Production and Reproduction Traits in Dairy Cattle written by MOHAMED MOSTAFA ABD EL RAHMAN (Kand.t.) and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic and Genomic Analyses of Fertility and Production Traits in Dairy Cattle by : Wen Huang, 1984-
Download or read book Genetic and Genomic Analyses of Fertility and Production Traits in Dairy Cattle written by Wen Huang, 1984- and published by . This book was released on 2011 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genotype by Environment Interaction in Milk Production and Reproductive Traits Among Holstein Cows Producing in Mexico and the US Environments by : Eugenia Cienfuegos
Download or read book Genotype by Environment Interaction in Milk Production and Reproductive Traits Among Holstein Cows Producing in Mexico and the US Environments written by Eugenia Cienfuegos and published by . This book was released on 1998 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Dairy Production by : Sarah Flack
Download or read book Organic Dairy Production written by Sarah Flack and published by Chelsea Green Publishing. This book was released on 2011-04-28 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is no simple recipe for setting up and managing a successful organic dairy farm, but this handbook can act as an introduction to important issues in organic dairy production and provide today's organic or transitioning dairy farmer with an overview of the tools and ideas available. Part of the NOFA guides. Organic Dairy Production includes information on: Soils, the foundation of health (manure management) Crop production and grazing management (forage species, pasture management, setting up a grazing system) Livestock (selection, nutrition, winter and summer feed considerations, seasonal milking, habitat, herd health, milk quality) Marketing (selling fluid milk, regulations, facility and equipment, selling raw milk) Recordkeeping The transition to organic Features examples from various farms in the Northeast.
