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411979

RANDOM REGRESSION MODEL AND BLUPF90 ANALYSES TO EVALUATE THE GENETIC AND PHENOTYPIC TRENDS FOR LACTATION AND REPRODUCTIVE TRAITS IN THE EGYPTIAN BUFFALO

Article

Last updated: 29 Mar 2025

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Subjects

-

Tags

Animal genetic and breeding

Abstract

The aims of this study were to estimate the variance components and heritability estimates for some lactation and reproduction traits of Egyptian buffaloes using a repeatability animal model and Random Regression Model (RRM) and plot the genetic and phenotypic trends. A total number of 7345 test-day records (TD) of milk yield (TDMY), fat yield (TDFY), protein yield (TDPY) and somatic cell score (TDSCS) were gathered monthly from 686 buffaloes. Also, a total number of 7279 reproduction records were collected from 1951 buffaloes. All herds belong to the Animal Production Research Institute (APRI), Ministry of Agriculture and Land Reclamation (MALR), Egypt. The genetic trends for lactation traits favorably increased from -4.63 kg to be 1.61 kg for TDMY, -5.0 g to be 495 g for TDFY and -26 g to be 280 g for TDPY, associated with favorably decreasing trend from 1.19 to be 1.37 for TDSCS as year of TD of milk advanced. On the contrary, the phenotypic trends decreased from 7.49 to 5.69 kg for TDMY, 510 to 360 g for TDFY and 284 to 223 g for TDPY, while that of TDSCS increased to be from 1.62 to 2.43. The genetic trends for reproduction traits slightly decreased from 0.24 mo to be -0.14 mo for AFC, 5.5 d to be 2.9 d for DO and 6.9 d to be 3.6 d for CI, while the phenotypic trends favorably decreased from 36.57 to 36.52 mo for AFC, 127 to 71 d for DO and 416 to 354 d for CI.

DOI

10.21608/ejap.2025.343178.1094

Keywords

Egyptian buffalo, genetic and phenotypic trends, lactation traits, reproduction traits, Random regression model

Authors

First Name

Abdelfattah

Last Name

Zaghloul

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Benha University, Egypt

Email

abdelfatah.rashed@fagr.bu.edu.eg

City

Tukh

Orcid

-

First Name

Maher

Last Name

Khalil

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Benha University, Egypt

Email

maher.khalil@fagr.bu.edu.eg

City

New Cairo

Orcid

0000-0002-6929-3011

First Name

Mahmoud

Last Name

Iraqi

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Benha University, Egypt

Email

mahmoud.iraqi@fagr.bu.edu.eg

City

Tukh

Orcid

-

First Name

Amin

Last Name

Amin

MiddleName

-

Affiliation

Animal Production Research Institute (APRI), Agricultural Research Center (ARC), Dokki, Giza 12618, Egypt

Email

amin_ama@yahoo.com

City

Dokki

Orcid

0000-0002-4491-9284

First Name

Ayman

Last Name

EL Nagar

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Benha University, Egypt

Email

ayman.elnagar@fagr.bu.edu.eg

City

Tukh

Orcid

0000-0001-7270-702X

Volume

62

Article Issue

1

Related Issue

53779

Issue Date

2025-01-01

Receive Date

2024-12-09

Publish Date

2025-01-01

Page Start

1

Page End

17

Print ISSN

0302-4520

Online ISSN

2735-3028

Article File

EJAP_Volume 62_Issue 1_Pages 1-17.pdf

PDF . 1.1MB

Link

https://ejap.journals.ekb.eg/article_411979.html

Detail API

http://journals.ekb.eg?_action=service&article_code=411979

Order

1

Type

Original Article

Type Code

1,298

Publication Type

Journal

Publication Title

Egyptian Journal of Animal Production

Publication Link

https://ejap.journals.ekb.eg/

MainTitle

RANDOM REGRESSION MODEL AND BLUPF90 ANALYSES TO EVALUATE THE GENETIC AND PHENOTYPIC TRENDS FOR LACTATION AND REPRODUCTIVE TRAITS IN THE EGYPTIAN BUFFALO

Details

Type

Article

Created At

25 Feb 2025