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EVALUATION OF NON GENETIC FACTORS AFFECTING MILK PRODUCTION TRAITS OF HOLSTEIN CATTLE

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Last updated: 04 Jan 2025

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Animal welfare

Abstract

This study was carried out to evaluate the effects of a ge at calving (AC), parity, days in milk (DIM), calving interval (CI), d ays open (DO), d ry period (DP), number of services per conception (NSC), s eason of calving on peak milk yield (PMY), time to attain peak milk yield (TPMY), 305 day mature equivalent (305- DMY) and total milk yield (TMY). Age at calving had significant effect (P≤ 0.05) on all traits studied except TPMY. DIM had a highly significant effect (P< 0.001) on PMY (37.14- 39.18 kg), TPMY (99.29- 194.08days), 305-DMY (8692.86 - 9760.65 kg) and TMY (4552.82- 12416.95 kg) respectively. Furthermore, DO and DP had a highly significant effect on PMY (33.72- 40.29 and 31.81 41.08 kg, respectively), TPMY (152.01- 165.14 and 139-165 day s , respectively), 305-DMY (8613.83- 9606.83 and 7266.76- 9699.76 kg, respectively) and TMY (8057.51- 8865.18 and 6682.97- 8850.30 kg, respectively). NSC had a highly significant effect (P< 0.001) on all traits studied except PMY. On the other hand, parity had no significant influence (P ≥ 0.05) on all traits studied except PMY. CI had no significant effect on all traits studied except 305-DMY. Moreover, season of calving had no significant effect on all traits studied. In conclusion, these factors should be accounted for genetic evaluation process. At farm level, management decisions such as selection and culling, and feeding should made putting these factors into consideration in order to achieve more reliable evaluation.

DOI

10.21608/mvmj.2017.126437

Keywords

traits, cattle, factors

Authors

First Name

M

Last Name

Fouda,

MiddleName

M

Affiliation

Department of Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Egypt

Email

-

City

-

Orcid

-

First Name

Kh

Last Name

El- Bayomi

MiddleName

M

Affiliation

Department of Animal Wealth Development, Faculty of Veterinary Medicine, Zagazig University, Egypt

Email

-

City

-

Orcid

-

First Name

R

Last Name

Darwish

MiddleName

A

Affiliation

Department of Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Egypt

Email

-

City

-

Orcid

-

First Name

A

Last Name

Eltanahy

MiddleName

R

Affiliation

Department of Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Egypt

Email

-

City

-

Orcid

-

Volume

18

Article Issue

1

Related Issue

17809

Issue Date

2017-06-01

Receive Date

2017-11-12

Publish Date

2017-12-12

Page Start

133

Page End

142

Print ISSN

1110-7219

Online ISSN

2682-2512

Article File

MVMJ_Volume 18_Issue 1_Pages 133-142.pdf

PDF . 541.2kB

Link

https://mvmj.journals.ekb.eg/article_126437.html

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https://mvmj.journals.ekb.eg/service?article_code=126437

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11

Publication Type

Journal

Publication Title

Mansoura Veterinary Medical Journal

Publication Link

https://mvmj.journals.ekb.eg/

MainTitle

EVALUATION OF NON GENETIC FACTORS AFFECTING MILK PRODUCTION TRAITS OF HOLSTEIN CATTLE

Details

Type

Article

Created At

22 Jan 2023