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381806

Analysis of Genetic and Non-genetic Factors Affecting Semen Traits in Baldi Black and New Zealand White Rabbits

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Animal Reproduction & Artificial Insemination

Abstract

Limited data exists on the genetics of semen traits in Egyptian local buck breeds compared to standard rabbit breeds. Genetic analysis was conducted on 520 ejaculates from 84 bucks of two breeds, Black Baldi and New Zealand White Rabbits, aged 6 months. The study aimed to assess heritability, common litter effects, spearman rank, phenotypic correlations between traits, and investigate non-genetic factors' influence. Most heritability for semen traits ranged from moderate (0.17 to 0.32), with the exception of sperm abnormality (Abno) and dead spermatozoa (dead). Moderate and high permanent environmental impacts ranged from 0.24 to 0.73. Spearman rank correlation between semen parameters was found to be positive, highly significant, and strong for whole ejaculate volume (WV) and net ejaculate volume (NV); WV and gel; WV and sperm concentration/ejaculate (Con/ej); NV and gel; and Con/ej (82 to 98). Phenotypic correlations were notably high and significantly strong between NV & WV, gel & WV, gel & NV, Con/ej & WV, Con/ej & NV, and Con/ej & sperm concentration (Con) (0.61 to 0.97). NZW bucks excel in WV, NV, gel, progressive sperm motility (PM), mass sperm motility (MM), Con, Con/ej, dead, and Libido score (Lib). Except for the pH value, all assessed characteristics showed notable variances between weeks. The birth parity significantly affected most analyzed semen traits. In autumn, the lowest mortality value was observed, while the highest values were recorded for WV, NV, gel, MM, Con, Con/ej, Liv, and Lib. Summer showed the lowest values for most semen characteristics.

DOI

10.21608/ejvs.2024.266086.1813

Keywords

heritability, Spearman rank and Phenotypic Correlations, breed, Week, Parity and Season

Authors

First Name

Amira

Last Name

El-Deghadi

MiddleName

Soliman

Affiliation

Animal Production Research Institute (APRI), Dokki, Giza 12651, Egypt.

Email

amira872002@gmail.com

City

Giza

Orcid

-

Related Issue

-2

Receive Date

2024-01-30

Publish Date

2024-09-25

Page Start

1

Page End

9

Print ISSN

1110-0222

Online ISSN

2357-089X

Link

https://ejvs.journals.ekb.eg/article_381806.html

Detail API

https://ejvs.journals.ekb.eg/service?article_code=381806

Order

381,806

Type

Original Article

Type Code

140

Publication Type

Journal

Publication Title

Egyptian Journal of Veterinary Sciences

Publication Link

https://ejvs.journals.ekb.eg/

MainTitle

Analysis of Genetic and Non-genetic Factors Affecting Semen Traits in Baldi Black and New Zealand White Rabbits

Details

Type

Article

Created At

23 Dec 2024