搜索结果: 1-15 共查到“生物学 milk yield”相关记录17条 . 查询时间(0.214 秒)
Factors affecting ewe’s milk fat and protein content and relationships between milk yield and milk components
sheep milk composition environmental effects correlations lactation curves
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2015/6/4
Test-day records of purebred Tsigai, Improved Valachian and Lacaune ewes were used to analyse the effect of environmental factors on milk fat and protein content. There were 121 424 and 121 158 measur...
Genetic Parameters for Milk Yield and Lactation Persistency Using Random Regression Models in Girolando Cattle
Lactation Persistency Legendre’s Polynomials Random Regression Model Cattle
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2016/5/19
A total of 32,817 test-day milk yield (TDMY) records of the first lactation of 4,056 Girolando cows daughters of 276 sires, collected from 118 herds between 2000 and 2011 were utilized to estimate the...
Genetic Analysis of Milk Yield in First-Lactation Holstein Friesian in Ethiopia: A Lactation Average vs Random Regression Test-Day Model Analysis
Dairy Cattle Genetic Parameters Random Regression Test-Day Model Test-Day Records
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2016/5/18
The development of effective genetic evaluations and selection of sires requires accurate estimates of genetic parameters for all economically important traits in the breeding goal. The main objective...
Comparison of Milk Yield and Animal Health in Turkish Farms with Differing Stall Types and Resting Surfaces
Resting Surface Stall Type Milk Yield Cattle Health Problems
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2016/5/17
The current study was carried out to determine the influence of different resting surfaces and stall types on milk yield and animal health. Study was carried out in Bursa that is one of the most impor...
Factors Influencing Genetic Change for Milk Yield within Farms in Central Thailand
Tropic Dairy Cattle Dairy Farmer Selection Breeding
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2016/5/6
The objective of this study was to characterize factors influencing genetic improvement of dairy cattle for milk production at farm level. Data were accumulated from 305-day milk yields and pedigree i...
Effects of Fermented Total Mixed Ration and Cracked Cottonseed on Milk Yield and Milk Composition in Dairy Cows
Fermented Total Mixed Ration Whole Cottonseed Dairy Cow
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2016/5/3
Four lactating Holstein Friesian crossbred cows, with an average initial weight of 450 kg, 4812 days in milk and initial milk yield of 18 kg/h/d, were randomly arranged according to a 2...
Polymorphism of Growth Hormone GH1-AluI in Jersey Cows and Its Effect on Milk Yield and Composition
Growth Hormone Polymorphism Jersey Milk Traits
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2016/4/27
To analyze genetic effects on milk production traits, 164 unrelated Italian Jersey cows reared in 15 farms located in Southern Italy were characterized at the growth hormone locus. Using a Polymerase ...
Influence of Varying Level of Sodium Bicarbonate on Milk Yield and Its Composition in Early Lactating Nili Ravi Buffaloes
Early Lactating Buffaloes Sodium Bicarbonate Nitrogen Balance Milk Yield and Composition
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2016/4/27
Influence of varying level of sodium bicarbonate (SB) supplementation on milk yield and its composition was examined in a randomized complete block design in early lactating Nili Ravi buffaloes during...
Genetic Persistency of First Lactation Milk Yield Estimated Using Random Regression Model for Indian Murrah Buffaloes
Indian Murrah Buffaloes Wilmink Function Daily Breeding Values Genetic Persistency
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2016/4/22
A random regression model was applied for the first time for the analysis of test day records and to study the genetic persistency of first lactation milk yield of Indian Murrah buffaloes. Wilmink??s ...
Estimation of Genetic Parameters for Daily Milk Yield, Somatic Cell Score, Milk Urea Nitrogen, Blood Glucose and Immunoglobulin in Holsteins
Genetic Parameters SCS MUN Glucose IgG
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2016/4/21
This study estimated the effects of parity (1-3) and stage of lactation (early, mid and late) on daily milk yield (DMY), somatic cell score (SCS), milk urea nitrogen (MUN), blood glucose, and immunogl...
Prediction of Future Milk Yield with Random Regression Model Using Test-day Records in Holstein Cows
Test Day Holstein Cows Random Regression Model Future Milk Yield
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2016/4/21
Various random regression models with different order of Legendre polynomials for permanent environmental and genetic effects were constructed to predict future milk yield of Holstein cows in Korea. A...
Genetic Parameters of Milk Yield and Milk Fat Percentage Test Day Records of Iranian Holstein Cows
Genetic Parameters TD Records Animal Model Iranian Holstein
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2016/4/20
Genetic parameters for first lactation milk production based on test day (TD) records of 56319 Iranian Holstein cows from 655 herds that first calved between 1991 and 2001 were estimated with restrict...
Effect of Recombinant Bovine Somatotropin (Boostin-250) on Blood Metabolites and Milk Yield of Lactating Buffaloes
rbST Blood Metabolites Milk Yield Buffaloes
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2016/4/18
In order to investigate the effect of recombinant bovine somatotropin (rbST) on blood metabolites and milk yield of lactating buffaloes, 30 lactating buffaloes after acclimatization for 30 days were d...
The Relation between Genetic Polymorphism Markers and Milk Yield in Brown Swiss Cattle Imported to Slovakia
Brown Swiss Gene Marker Milk Production
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2016/4/14
The aim of this study was to determine genotypes of four genetic markers and to investigate their association with milk production traits in Brown Swiss cattle imported to Slovakia. The bovine k-casei...
Influence of Milk Yield, Parity, Stage of Lactation and Body Weight on Urea and Protein Concentration in Milk of Murrah Buffaloes
Milk Urea Murrah Buffalo Milk Protein Parity Body Weight Stage of Lactation
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2016/4/14
The present study was carried out to investigate the effect of test day milk yield, test day evening milk yield, parity, stage of lactation and body weight on milk urea and milk protein concentration....