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411334

GENETIC CHANGES FOR DAILY MILK YIELD AND MILK CONTENTS IN EGYPTIAN BUFFALO BULLS

Article

Last updated: 15 Feb 2025

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Subjects

-

Tags

Animal genetic and breeding

Abstract

Predicting the characteristics of buffalo milk lactation curves is more important for sustaining the genetic diversity in Egyptian native populations. The Wood's function was fitting for individual test-day records over the entire range of calving, from 1999 to 2021, in three experimental buffalo herds at the Animal Production Research Institute of the Agricultural Research Center. Wood's daily milk yield (WM), daily peak milk yield (PM), days to peak milk yield (DP), persistency (PS), fat percentage (FP), and protein percentage (PP) were estimated using the best linear unbiased prediction (BLUP) approach for predicting daily genetic values of the studied bulls. Genetic changes for the studied traits were obtained as the regressing the average estimated daily breeding values (EDBVs)of bulls on birth year of their daughters over three generation interval for assessing the genetic progress. The average EDBVs for the investigated traits were found to be lower and insignificant. EDBVs varied from -0.30 to 0.31 for WM, -0.23 to 0.19 for PM, -0.14 to 0.25 for PS, -2.5 to 6.63 for DP, -0.56 to 0.09 for FP, and -0.44 to 0.21 for PP over the three separated lactations. Chiefly, bulls' genetic responses are either positive or negative and insignificant over the study period. These findings suggested implementing sustained straight-breeding schemes for the experimental native Egyptian buffalo populations

DOI

10.21608/ejap.2025.336693.1092

Keywords

Egyptian native buffalo, test-day records, Wood's function, genetic progress, sustained straight-breeding schemes

Authors

First Name

Manal

Last Name

Elbramony

MiddleName

-

Affiliation

Buffalo Breeding Research Department, Animal Production Research Institute, Agricultural Research Center, Giza, Egypt

Email

m.elbramony@gmail.com

City

Egypt

Orcid

-

First Name

A.

Last Name

Ashmawy

MiddleName

A.

Affiliation

Department of Animal Production, Faculty of Agriculture, University of Ain Shams, Cairo, Egypt.

Email

aashmawy46@windowslive.com

City

-

Orcid

-

First Name

M.

Last Name

Abo-Farw

MiddleName

A.

Affiliation

Buffalo Breeding Research Department, Animal Production Research Institute, Agricultural Research Center, Giza, Egypt

Email

abofarwmohamed@yahoo.com

City

-

Orcid

-

Volume

61

Article Issue

3

Related Issue

50910

Issue Date

2024-09-01

Receive Date

2024-11-15

Publish Date

2024-09-01

Page Start

141

Page End

147

Print ISSN

0302-4520

Online ISSN

2735-3028

Article File

EJAP_Volume 61_Issue 3_Pages 141-147.pdf

PDF . 569.9kB

Link

https://ejap.journals.ekb.eg/article_411334.html

Detail API

http://journals.ekb.eg?_action=service&article_code=411334

Order

4

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

GENETIC CHANGES FOR DAILY MILK YIELD AND MILK CONTENTS IN EGYPTIAN BUFFALO BULLS

Details

Type

Article

Created At

15 Feb 2025