journal of dairy research

  • Home
    • About >
      • Our JDR
      • Hannah Dairy Research Foundation
      • Log In assistance
      • Special Access pages
      • Data Privacy
    • Contact JDR
    • Join JDR Community
  • Latest Research
    • JDR Published Volumes >
      • JDR 90(1)
      • JDR 89(4)
      • JDR 89(3)
      • JDR 89(2)
      • JDR 89(1)
      • JDR 88(4)
      • JDR 88(3)
      • JDR 88(2)
      • JDR 88(1)
      • JDR 87(4)
      • JDR 87(3)
      • JDR 87(2)
      • JDR 87(1)
      • JDR 86(4)
      • JDR 86(3)
      • JDR 86(2)
      • JDR 86(1)
      • JDR 85(4)
      • JDR 85(3)
      • JDR 85(2)
      • Vol 85(1)
      • Vol 84(4)
      • JDR 84(3)
      • JDR 84(2)
      • JDR 84(1)
      • JDR 83(4)
      • JDR 83(3)
      • JDR 83(2)
      • JDR 83(1)
    • First View Articles
    • DairyCare Special Issue
    • Papers for Community Peer Review
    • Editorials
    • Reviews
    • Collected Abstracts
    • Foreign Language Abstracts
    • PhD Thesis Abstracts
    • Research clusters >
      • Wastewater cluster
      • Mastitis Cluster
    • Latest content infographic
    • Conferences and Workshops >
      • Next Generation Dairying >
        • Next Generation Dairying 2022 >
          • Workshop Expression of interest
          • Programme 2022
        • Next Generation Dairying 2021
        • Next Generation Dairying 2018 >
          • Workshop Proceedings
        • Next Generation Dairying 2019 >
          • Programme
          • 2019 Abstracts
          • photo gallery
      • DairyCare on JDR >
        • Copenhagen Programme
        • Copenhagen Abstracts
        • Cordoba Programme
        • Cordoba Abstracts
        • Zadar Programme
        • Zadar Abstracts
        • Lisbon Programme
        • Lisbon Abstracts
        • Thessaloniki Programme
        • Thessaloniki Abstracts
  • For authors
    • Prepare your Manuscript
    • Submit your Manuscript
    • Submit supplementary file
    • Submit your revision
    • Submit your Proof
    • Submit another type of article >
      • Research Reflections
      • Submit an invited article
      • Write to the Editor
      • Submit Foreign Language Abstract
      • Submit PhD Thesis Abstract
      • file upload
  • For reviewers
    • Peer Review Process
    • Peer Review: Paper
    • Peer Review: Research Communication
    • Peer Review: other types
    • Peer Review: Revised manuscript
    • Join the JDR Peer Review Pool
    • Guaranteed Reviewer status
  • Editorial Office
    • Survey
    • For EBM
  • Home
    • About >
      • Our JDR
      • Hannah Dairy Research Foundation
      • Log In assistance
      • Special Access pages
      • Data Privacy
    • Contact JDR
    • Join JDR Community
  • Latest Research
    • JDR Published Volumes >
      • JDR 90(1)
      • JDR 89(4)
      • JDR 89(3)
      • JDR 89(2)
      • JDR 89(1)
      • JDR 88(4)
      • JDR 88(3)
      • JDR 88(2)
      • JDR 88(1)
      • JDR 87(4)
      • JDR 87(3)
      • JDR 87(2)
      • JDR 87(1)
      • JDR 86(4)
      • JDR 86(3)
      • JDR 86(2)
      • JDR 86(1)
      • JDR 85(4)
      • JDR 85(3)
      • JDR 85(2)
      • Vol 85(1)
      • Vol 84(4)
      • JDR 84(3)
      • JDR 84(2)
      • JDR 84(1)
      • JDR 83(4)
      • JDR 83(3)
      • JDR 83(2)
      • JDR 83(1)
    • First View Articles
    • DairyCare Special Issue
    • Papers for Community Peer Review
    • Editorials
    • Reviews
    • Collected Abstracts
    • Foreign Language Abstracts
    • PhD Thesis Abstracts
    • Research clusters >
      • Wastewater cluster
      • Mastitis Cluster
    • Latest content infographic
    • Conferences and Workshops >
      • Next Generation Dairying >
        • Next Generation Dairying 2022 >
          • Workshop Expression of interest
          • Programme 2022
        • Next Generation Dairying 2021
        • Next Generation Dairying 2018 >
          • Workshop Proceedings
        • Next Generation Dairying 2019 >
          • Programme
          • 2019 Abstracts
          • photo gallery
      • DairyCare on JDR >
        • Copenhagen Programme
        • Copenhagen Abstracts
        • Cordoba Programme
        • Cordoba Abstracts
        • Zadar Programme
        • Zadar Abstracts
        • Lisbon Programme
        • Lisbon Abstracts
        • Thessaloniki Programme
        • Thessaloniki Abstracts
  • For authors
    • Prepare your Manuscript
    • Submit your Manuscript
    • Submit supplementary file
    • Submit your revision
    • Submit your Proof
    • Submit another type of article >
      • Research Reflections
      • Submit an invited article
      • Write to the Editor
      • Submit Foreign Language Abstract
      • Submit PhD Thesis Abstract
      • file upload
  • For reviewers
    • Peer Review Process
    • Peer Review: Paper
    • Peer Review: Research Communication
    • Peer Review: other types
    • Peer Review: Revised manuscript
    • Join the JDR Peer Review Pool
    • Guaranteed Reviewer status
  • Editorial Office
    • Survey
    • For EBM

PhD Thesis
Erduran 2017

PhD Thesis abstract published online as a service to the JDR Community.

Determination of genetic and phenotypic parameters in some yield characteristics of Hair, Alpine × Hair and Saanen × Hair crossbred goats raised under semi-intensive conditions
Hakan Erduran
Turkey

Abstract 
This study was carried out to determine the reproduction and milk production characteristics and the heritability and the repeatability of these traits for Hair, Alpine × Hair F1 (AHF1), Alpine × Hair F2 (AHF2), Alpine × Hair B1 (AHB1), Saanen × Hair F1 (SHF1), Saanen × Hair F2 (SHF2) and Saanen × Hair B1 (SHB1) goats reared under semi-intensive conditions in three goat flocks, located within two villages of Selcuklu District of Konya Province in 2014 and 2015. Birth rates, litter size at birth and litter size at weaning were 93.6%, 95.4% and 96.7%;1.15, 1.21 and 1.32; 1.01, 1.02 and 1.09 for Hair, AHF1 and SHF1 crossbred goats at their first four lactations, respectively while birth rates, litter size at birth and litter size at weaning were   90.9%,  94.2%,  94.4%, 88.7%, 95.9%, 95.2% and 90.0%; 1.11, 1.18, 1.24, 1.38, 1.28,1.28 and 1.42; 0.93, 0.97, 1.04, 1.06, 1.01, 1.03 and 1.03 for Hair, AHF1, AHF2, AHB1, SHF1, SHF2 and SHB1 crossbred goats their first two lactations, respectively. At the lactation milk yields, lactation lengths and average daily milk yields of Hair, AHF1 and SHF1 crossbred goats at first four lactations were 220.9 kg,  297.1 kg and 323.2 kg; 212.1 days, 222.3 days and 223.8 days; 1.039 kg, 1.334 kg and 1.442 kg respectively. The lactation milk yields, lactation lengths and average daily milk yields of Hair, AHF1, AHF2, AHB1, SHF1, SHF2 and SHB1 crossbred goats at first two lactations were 203.2 kg, 264.5 kg, 251.8 kg, 283.2 kg, 287.2 kg, 255.0 kg and 292.3 kg; 210.6 days, 220.6 days, 214.8 days, 221.3 days, 221.6 days, 214.3 days and 224.5 days; 0.960 kg, 1.197 kg, 1.169 kg, 1.280 kg, 1.293 kg, 1.191 kg and 1.301 kg respectively. Average milk fat, protein, lactose, milk solid percentages and total fat and protein yields of Hair, AHF1 and SHF1 crossbred goats at their first four lactations were 5.15%,  4.82%  and 4.80%;  4.01%,  3.87% and 3.84%;  5.51%, % 5.31 and 5.31%;  15.28%,  14.71% and 14.6%; 11.13 kg, 13.83 kg and 15.13 kg; and 8.87 kg, 11.48 kg and 12.38 kg respectively. The same parameters for Hair, AHF1, AHF2, AHB1, SHF1, SHF2 and SHB1 goats at their first two lactations were 5.25%,  5.08%,  4.74%,  4.83%,  4.93%,  4.84% and 4.57%;  4.07%, 3.95%,  3.94%,  3.85%,  3.89%,  3.89% and 3.84%;  5.60%,  5.37%,  5.32%, 5.26%,  5.37%,  5.31% and  5.17%;  15.50%,  15.11%,  14.75%,  14.72%,  14.83%,  14.81% and  14.47%; 10.35 kg, 13.17 kg, 11.63 kg, 13.54 kg, 13.93 kg, 12.17 kg and 13.31 kg; 8.31 kg, 10.42 kg, 9.94 kg, 10.93 kg, 11.14 kg, 9.93 kg and 11.22 kg respectively. Heritability estimates of the litter size at birth and litter size at weaning were 0.08 and 0.14, respectively for the goats at their first four lactations, while the repeatability estimates of the litter size at birth and litter size at weaning were 0.35 and 0.49, respectively. The same parameters for the goats at their first two lactations were 0.17 and 0.22; 0.32 and 0.41, respectively. Heritability estimates ranged from 0.18 to 0.32 for the milk yields, 0.10 to 0.16 for lactation length, 0.24 to 0.45 for fat percent, 0.43 to 0.54 for protein percent, 0.18 to 0.38 for fat yield, 0.21 to 0.51 for protein yield. Repeatability estimates varied from 0.26 to 0.51 for milk yield, 0.12 to 0.61 for lactation length, 0.24 to 0.79 for fat percent, 0.45 to 0.62 for protein percent, 0.20 to 0.63 for fat yield, 0.26 to 0.60 for protein yield. The estimated heritability for birth weight, live weights at two months of age, at three months (weaning) of age and at six months of age of the kids that were born from the goats at their first four lactations were 0.33, 0.26, 0.30 and 0.35. The estimated heritability for those were born from the goats at their first two lactations was 0.25, 0.24, 0.22 and 0.32 respectively.
It is concluded that the milk yield traits of Hair goats can be improved substantially through improving the husbandry and feeding conditions by applying an appropriate selection program and crossbreeding scheme.

Affiliation and Awarding Institution: Selcuk University​

Corresponding E-mail address: herduran42@hotmail.com
​Availability of full Thesis: http://acikerisimarsiv.selcuk.edu.tr:8080/xmlui/handle/123456789/6168
Abstract published July 2021.
Picture


JournalofDairyResearch.org is a Hannah Dairy Research Foundation website