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285643

LACTATION CURVE AND MILK PRODUCTION TRAITS OF SYRIAN DAMASCUS GOATS

Article

Last updated: 25 Dec 2024

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Subjects

-

Tags

Husbandry and veterinary science.

Abstract

This study aimed to describe the lactation curve using the Wood's function, estimate the milk production traits and investigate the non-genetic factors affecting both, the lactation curve and milk production traits of Syrian Damascus goats. A total number of 334 weekly test-day milk records were collected during the year 2019 on 98 Damascus goats at Karhta station, Syria. The least squares means of the studied lactation curve traits were 2.6 ± 0.05 kg for the initial milk yield after kidding (parameter a), 0.45 ± 0.011 kg/week for the rate of rise in milk production to peak lactation (parameter b), 0.09 ± 0.001 kg/week for the rate of decrease in milk production from peak to the end of lactation period (parameter c), 3.40 ± 0.05 kg for peak milk yield (PMY), 5.09 ±  0.08 weeks for peak week (PW) and 55.71 ± 0.54 % for persistency of lactation (P%). The estimates for milk production traits were 413 ± 5.98 kg, 199 ± 1.23 days, and 2.1 ± 0.02 kg/day for total milk yield (TMY), lactation period (LP), and daily milk yield (DMY), respectively.  
The results showed that parity exerted a highly significant (P < 0.01) effect on all the studied traits except PW and P%. Also, the month of kidding had a significant effect on all the studied parameters except P%. However, the type of birth had no significant effect on all the studied traits. It could be concluded that Wood's function is a convenient tool to describe the lactation curve of Syrian Damascus goats. Also, Damascus goats showed a higher potentiality for milk production and a long lactation period under subtropical environmental conditions.

DOI

10.21608/ejap.2023.177189.1051

Keywords

Damascus goats, Lactation curve, milk production traits, persistency

Authors

First Name

Obaida

Last Name

Almasri

MiddleName

-

Affiliation

General Commission for Scientific Agricultural Research, Damascus, Syria.

Email

obaidaalimasri@gmail.com

City

algeza

Orcid

-

First Name

Samy

Last Name

Abou-Bakr

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.

Email

samyabm2006@yahoo.com

City

Giza

Orcid

0000-0003-4216-9448

First Name

Mohamed

Last Name

Ibrahim

MiddleName

Abd El-Aziz Mohamed

Affiliation

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.

Email

m.ibrahim@gmail.com

City

-

Orcid

-

First Name

Othman

Last Name

kahil

MiddleName

-

Affiliation

General Commission for Scientific Agricultural Research, Damascus, Syria.

Email

mariamoat87@gmail.com

City

-

Orcid

-

First Name

Ziyad

Last Name

Asaad

MiddleName

-

Affiliation

General Commission for Scientific Agricultural Research, Damascus, Syria.

Email

yazenmawerdi1971@gmail.com

City

-

Orcid

-

First Name

Mohammed

Last Name

Ghoush

MiddleName

-

Affiliation

Department of Agricultural Economic, Faculty of Agriculture, Tishreen University, Syria.

Email

dr.mohammadgosh@gmail.com

City

-

Orcid

-

First Name

Mohamed

Last Name

Awad

MiddleName

Attia Ahmed

Affiliation

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.

Email

mohamed.awad@agr.cu.edu.eg

City

-

Orcid

0000-0001-7443-8724

Volume

60

Article Issue

1

Related Issue

39601

Issue Date

2023-02-01

Receive Date

2022-11-28

Publish Date

2023-02-01

Page Start

7

Page End

16

Print ISSN

0302-4520

Online ISSN

2735-3028

Article File

EJAP_Volume 60_Issue 1_Pages 7-16.pdf

PDF . 582.2kB

Link

https://ejap.journals.ekb.eg/article_285643.html

Detail API

https://ejap.journals.ekb.eg/service?article_code=285643

Order

2

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

LACTATION CURVE AND MILK PRODUCTION TRAITS OF SYRIAN DAMASCUS GOATS

Details

Type

Article

Created At

25 Dec 2024