[PDF] Top 20 Use of Random Regression Test Day Model to Estimate Genetic Parameters of Milk Yield in Holstein Cows
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Use of Random Regression Test Day Model to Estimate Genetic Parameters of Milk Yield in Holstein Cows
... and genetic parameters were estimated for milk yield of Iranian Holstein ...68,945 milk test-day records of first, second and third lactations of 8515 animals from ... See full document
12
Genetic relationship between milk dry matter and other milk traits in extended lactations of Polish Holstein cows
... of milk traits is relatively large (Jamrozik et ...a random regression test day model to estimate genetic pa- rameters for milk, fat, and protein ... See full document
14
Estimation of genetic parameters and evaluation of test day milk production in sheep
... ABSTRACT: Genetic parameters and breeding values were estimated based on 11 708 daily milk yields from 2255 lactations (1351 sheep, 19 different flocks) between the years 2004 and ...the ... See full document
7
Genetic parameters of test day somatic cell scores for the first three lactations of Polish Holstein Friesian cattle
... in genetic variance for later parities can be observed, with average values of ...of genetic variances were estimated in the first month of ...in genetic variance between pari- ties were at the end ... See full document
9
Genetic parameters for female fertility and milk production traits in first parity Czech Holstein cows
... to estimate genetic parameters for female fertility and production traits in first-parity Czech Holstein cows and to quantify the effect of using this information on the accuracy of a ... See full document
7
Linking first lactation survival to milk yield and components and lactation persistency in Tunisian Holstein cows
... Abstract. Genetic parameters were estimated for first lactation survival defined as a binary trait (alive or dead to second calving) and the curve shape traits of milk yield, fat and protein ... See full document
8
Genetic and environmental parameters estimation for milk traits in Slovenian dairy sheep using random regression model
... additive genetic correlations were decreasing faster (to ...three milk traits could be re- garded as genetically different traits during lactation, since additive genetic correlations between distant ... See full document
11
Estimation of genetic parameters for production traits and somatic cell score in Iranian Holstein dairy cattle using random regression model
... for milk, fat, protein yields and SCS respectively) between adjacent yields and small ...for milk, fat, protein yields and SCS respectively) between yields at the ex- tremes of the lactation ...for ... See full document
10
Analysis of Milk and Fertility Traits in Holstein Friesian Cattle on the Plateau, Jos Nigeria
... of genetic parameters for milk and fertility traits of 650 cows calved between 1992 and 2015 was obtained from the database of Integrated Dairies Limited, Jos, ...analytical model ... See full document
7
Genetic parameters for somatic cell score in the first three lactations of Czech Holstein and Fleckvieh breeds using a random regression model
... Fleckvieh cows. They were extracted from the Czech national milk-recording database for cows calved between 1995 and ...2003. Cows with the second or third lactations had to have all their ... See full document
10
Genetic parameters for test day model with random regressions for production traits of Czech Holstein cattle
... that genetic correlations were high between the individual test- days and 305-day production with an exception for the correlation between day 5 and 305 for fat ...negative genetic ... See full document
13
The effects of feeding frequency on the intake and performance of cows grazing mixed pasture : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Animal Science at Massey University, Palmerston North, New Zealand
... of Milk Protein for the Two Treatments in both Periods 74 4.4 Yield of Lactose for the Two Treatments in both Periods 76 ...of Milk Fat for the Two Treatments in both Periods 78 ...of Milk ... See full document
12
Animals Breeding Efficiency According to the Phenotype of their Offspring
... Statistical Indicators 2012, Rodriguez et al 2011). This can lead to an increase in the probability of spontaneous inbreeding in recipient populations. Therefore, with today's breeding, genealogical lines and their ... See full document
10
Effect of Age at First Calving on First Lactation Milk Yield in Holstein Cows from Costa Rican Specialized Dairy Herds
... that milk production systems with Holstein breed animals are limited in their milk production level by both genetic and environmental ...dairy cows, decreasing production and limiting ... See full document
8
Comparisons of different models for lactation curves of fat to protein ratio and somatic cell score of Holstein cows in Iran
... 989,582 test-day records of 160,243 cows collected from 131 herds of Iranian Holstein dairy cows during 1995 to 2014 by the Animal Breeding and Im- provement Centre of ...of cows ... See full document
7
Lifetimegenetic analysis of milk yield in Iranian Holstein cows using repeatability and pre-structured multivariate models
... repeatability model, unity genetic correlations and homogenous variances are assumed among the repeated records (Falconer, ...this model for genetic analysis of repeated records, the residual ... See full document
6
Estimation of Genetic Parameters for Productive Traits of Murrah Buffaloes in Kaski Nepal
... Daily milk yield and annual milk yield differed with respect to year of calving ...daily milk yield and annual milk yield ...The genetic correlations between ... See full document
11
Bayesian genetic analysis of milk yield in Tunisian Holstein dairy cattle population
... to use them to look for statis- tical evidence of major genes or quantitative trait loci (QTL) by statistical ...for milk flow in dairy cattle; Ilahi and Othmane [9,10] for milk yield in dairy ... See full document
6
THE EFFECT OF SOME ENVIRONMENTAL FACTORS ON MILK YIELD OF THE HOLSTEIN COWS RAISED IN A SEMI-ARID CLIMATE
... the milk production of Holstein cows demonstrated a considerable fall in the tropical and subtropical ...So, Holstein has registered low average; between 2554kg and 3978kg (Javed et ...of ... See full document
16
Effect of Different Levels of Dietary Bole (Lake Soil) Inclusion on Feed Intake, Milk Yield and Composition of Holstein Friesian Cows
... the milk yield of lactating dairy cows was not significantly different by supplementing the natural mineral soil ...increased milk fat content by about ...of milk fat content was ... See full document
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