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Saturday, July 25, 2020 | History

2 edition of study of genetic parameters for milk characteristics in goat. found in the catalog.

study of genetic parameters for milk characteristics in goat.

Knut RГёnningen

study of genetic parameters for milk characteristics in goat.

by Knut RГёnningen

  • 154 Want to read
  • 18 Currently reading

Published by Mariendals boktrykkeri in Gjøvik .
Written in English

    Subjects:
  • Goats -- Breeding.,
  • Goat milk.

  • Edition Notes

    SeriesAgricultural College of Norway. Institute of Animal Genetics and Breeding. Report no. 232, Scientific reports from the Agricultural College of Norway, v. 46, nr. 2, Meldinger fra Norges landbrukshøgskole ;, v. 46, nr. 2.
    Classifications
    LC ClassificationsS539.N6 A25 vol. 46, nr. 2
    The Physical Object
    Pagination17 p.
    Number of Pages17
    ID Numbers
    Open LibraryOL4805481M
    LC Control Number75533949

    For many years, ADGA has been accumulating the phenotypic information that is used to generate the genetic information on which the “numbers” are based. Before dairy goat breeders began to use the DHI (Dairy Herd Improvement) Program, many kept “barn records” to . May 14,  · The objective of this study was to estimate variance components and genetic parameters for growth curve parameters in Guilan sheep. Studied traits were parameters of Brody growth model which included A (asymptotic mature weight), B (initial animal weight) and K (maturation rate). The data set and pedigree information used in this study were obtained from the Agricultural Organization of Cited by: 5.

    Somatic cells count (SCC), milk yield (MY) and pedigree information of 2, first lactation cows that calved between and on Thai farms were used to estimate genetic parameters and trends for SCC and its genetic association with MY. The SCC were log-transformed (lnSCC) to make them normally distributed. In the third part of this study, genetic parameters for South African Holstein cows for fertility and production traits were estimated from lactation records. Two-trait analysis of fertility and milk yield was investigated as a method to estimate fertility breeding values when culling, or selection.

    May 31,  · Scientists breed goats that produce spider silk. goats in such a way that the goats would only make the protein in their milk. Like any other genetic factor, only a certain percentage of the. lactation. This study shows that the use of eigenvectors can reduce the rank of (co)variance matrices for the test-day model and can provide consistent genetic parameters. genetic parameters / test-day model / dairy traits / reduced rank 1. INTRODUCTION National Cited by:


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Study of genetic parameters for milk characteristics in goat by Knut RГёnningen Download PDF EPUB FB2

Therefore, the objectives of the present study were to determine the most appropriate models and estimate genetic parameters and genetic trends for milk yield traits for Jamunapari goats in semi-arid tropics.

Materials and methods Herd descriptionCited by: 2. Genetic parameters of dairy traits in the Alpine and Saanen goat breeds Article (PDF Available) in Genetics Selection Evolution 31(5) · September with Reads How we measure 'reads'. Note Genetic parameters of dairy traits in the Alpine and Saanen goat breeds Sophie Bélichon Eduardo Manfredi’ Agnès Piacèrec a Caprigène capitolchamberartists.comle, route de Chauvigny, Mignaloux.

Genetic and phenotypic parameters of milk yield and milk compo- sition in two Indian goat breeds. Small Rumin. Res., 3: Jamunapari and Barbari goats were reared under semi-intensive feeding management from to Kidding of goats was restricted to March-April and October-November every capitolchamberartists.com by: Estimation of genetic parameters and genetic trends for reproductive traits in Saanen goats Figure 1.

Total litter weights (TLW) obtained in different age of Sannen goats Figure 2. Genetic trends for LS and BW in the period from year to BW – birth weight (kg) BW – litter size (n) Total litter weight (kg). The remaining milk i.e. 62% was obtained by kid suckling.

These and other management conditions could be the main reasons for the underestimation of milk production in the current study (Mohammed ).

Genetic parameters. In the current study low heritability for LL was reported. farms. Nevertheless, research on genetic parameters of birth weight and weaning weight in tropical climates in goat population is very poorly developed.

Because of the existence of purebred and crossbred animals in this goat commercial farm for estimation genetic evaluation for pre-weaning growth an in-depth study was needed. Thus, the. concern the effects on milk production and length of the lactation period alone.

This paper was carried out to identify environmental factors which influence produc-tion and contents of milk constituents and milk production until days of lactation, in addi - tion to estimating genetic parameters for those traits in Saanen and Alpine goats.

Dec 13,  · Hamed, A., Mabrouk, M. M., Shaat, I. and Bata, S., Estimation of genetic parameters and some non-genetic factors for litter size at birth and weaning and milk yield traits in Zaraibi goats, Egyptian Journal of Sheep and Goat Sciences 4(2), 55– Google ScholarCited by: Jul 16,  · Genetic parameters for production, health, fertility and longevity traits in dairy cows - Volume 7 Issue 1 - T.

Pritchard, M. Coffey, R. Mrode, E. Wall Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a Cited by: Milk composition always serves as an indicator for the cow’s health status and body condition. Some non-genetic factors such as parity, days in milk (DIM), and calving season, which obviously affect milk performance, therefore, need to be considered in dairy farm management.

However, only a few milk compositions are used in the current animal selection capitolchamberartists.com: Chao Du, Liangkang Nan, Lei Yan, Qiuyue Bu, Xiaoli Ren, Zhen Zhang, Ahmed Sabek, Shujun Zhang.

Jan 03,  · The main objectives of this study were to estimate genetic and phenotypic parameters for growth traits and prolificacy in the Raeini Cashmere goat. Traits included, birth weight (BWT), weaning weight (WWT), 6-month weight (6WT), 9-month weight (9WT), month weight (12WT), average daily gain from birth to weaning (ADG1), average daily gain from weaning to 6WT (ADG2), average daily Cited by: to the goat genotype (breed, udder characteristics) were recorded.

Results confirmed that milk yield from dairy goats was higher (p. Characteristics of goat milk may make SCC less useful as a measure of udder health than for cows (Guss, ; Loewen-stein and Speck, ). At some dairy records processing cen-ters (DRPC), parameters that are specific to dairy goats, such as shorter gestation interval, are used (Murrill, ).

Goat yield data are forwarded by DRPC to the. GENETIC PARAMETERS OF UDDER TRAITS AND THEIR RELATIONSHIP WITH MILK YIELD IN SAHIWAL COWS OF PAKISTAN M.A. Khan and M.S. Khan* Department of Livestock Production and Management, University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Pakistan.

*Institute of Animal Sciences, University of Agriculture, Faisalabad. Summary — Genetic parameters for dairy traits in first lactation (milk yield, fat and protein yields, fat and protein contents) were estimated by restricted maximum likelihood in the Alpine and Saanen goat breeds from records including progeny of and unproven bucks respectively, mainly used Cited by: Jan 12,  · Other characteristics of sheep milk proteins are their structural conformations and the amounts and subtypes of micelles, which are smaller ( nm) than those of cow milk ( nm) and similar to those of goat milk ( nm; Park and others ).Cited by: Genetic and phenotypic parameters for production traits and somatic cell count (SCC) for Jersey dairy cattle in Zimbabwe were estimated.

A total of lactation records were obtained from Zimbabwe Livestock Identification Trust, with cows calving in the period from to An ASReml program fitting an animal model was used for the analyses. Heritability estimates for milk yield, fat Cited by: 8.

ii CERTIFICATE This is to certify that the thesis entitled, "GENETIC CHARACTERIZATION OF INDIGENOUS GOAT POPULATIONS OF ETHIOPIA USING MICROSATELLITE DNA MARKERS" submitted by Mr.

TESFAYE ALEMU TUCHO towards the partial fulfilment of the award of the degree of DOCTOR OF PHILOSOPHY in ANIMAL GENETICS & BREEDING of the NATIONAL DAIRY.

Milk production records of all grade and registered Saanen dairy goats from the Milk Recording and Performance Testing Scheme of the Animal Improvement Institute of the Agricultural Research Council of South Africa and pedigree information of these animals from SA Studbook were analyzed to obtain specific genetic parameters.

The aim of this study was to investigate the environmental factors influencing the somatic cell counts, milk yield, fat and protein content and to estimate the genetic parameters for the traits analysed, in order to use these parameters in the genetic evaluation procedures.

CIHEAM - Options Mediteraneennes.Estimating non-genetic and genetic parameters of pre-weaning growth traits in Raini Cashmere goat.

Barazandeh A(1), Moghbeli SM, Vatankhah M, Mohammadabadi M. Author information: (1)Department of Animal Science, University of Jiroft, Jiroft, capitolchamberartists.com by: Goat Genetics Genetics is the study of the genotype or genetic makeup of an animal at the chromosomal level.

Population genetics deals with the behavior of genes in populations and those forces that change gene frequency (Pattie & Restall, ).