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41835

EFFECTS OF DIETARY SUPPLEMENTATION WITH ZINC AND BETAINE ON GROWTH PERFORMANCE AND SOME PHYSIOLOGICAL RESPONSES FOR GROWING RABBITS UNDER HOT CONDITIONS

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Last updated: 04 Jan 2025

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Abstract

Sixty weaned males APRI line rabbit about 35 days with average initial weight 530±10.3 gm were randomly distributed into six experimental groups (10 per each) from June to August (hot season). Group 1 fed the basal diet as control (C). While, groups 2 (R1, basal diet+100mg zinc/kg diet), 3 (R2, basal diet+160 mg betaine/kg diet), 4 (R3, basal diet+320 mg betaine/kg diet), 5 (R4, basal diet+100mg zinc+160 mg betaine/kg diet) and 6 (R5, basal diet+100mg zinc+320 mg betaine/kg diet). Initial body weight, final body weight (FBW), feed intake (FI), body weight gain (BWG), feed conversion ratio (FCR), total protein (TP), albumin (ALB), globulin (GL), red blood cells (RBCs), white blood cells (WBCs), packed cell volume (PCV%), total antioxidant capacity (TAC), malonaldehyde (MAD), thiroxine (T4), triiodotherionine (T3), carcass characteristics and economic study were determined. Results showed significant (P≤0.05) increases in FBW, BWG and significant (P≤0.05) improving in FCR in all treated groups compared with the control one. Dressing and testes percentages were significant (P≤0.05) increasing compared with the control. Also, RBCs, WBCs, PCV% and lymphocytes were increased in treated groups while neutrophils and eosynophils were decreased compared with the control one. Zinc showed significantly (P≤0.05) increasing lymphocytes and monocytes compared with control. While betaine recorded a decreasing in neutrophils compared with zinc and control groups. There were decreasing in TP, ALB, GL and TAC in control group comparable with all treated groups. Also, control group significantly (P≤0.05) increased in cholesterol and MAD. The economic efficiency values and relative economic efficiency were significantly improved in all treated groups compared with control group. Conclusively: using fed supplemented with 100 mg zinc/kg feed for growing APRI rabbit could be recommended for realizing best results of growth performance, carcass characteristics and relative economic efficiency% during summer season.

DOI

10.21608/ejrs.2017.41835

Keywords

Rabbits, zinc, Betaine, Blood, heat stress, Anti oxidant

Authors

First Name

Mohamed

Last Name

Elsawy

MiddleName

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Affiliation

Rabbit Res. Department, Anim. Prod. Res. Inst., ARC, Ministry of Agric., Egypt.

Email

elsawy1966@gmail.com

City

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Orcid

-

First Name

Mohamed

Last Name

El-Speiy

MiddleName

-

Affiliation

Rabbit Res. Department, Anim. Prod. Res. Inst., ARC, Ministry of Agric., Egypt.

Email

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City

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Orcid

-

First Name

Tarek

Last Name

Sadaka

MiddleName

-

Affiliation

Rabbit Res. Department, Anim. Prod. Res. Inst., ARC, Ministry of Agric., Egypt.

Email

-

City

-

Orcid

-

Volume

27

Article Issue

1

Related Issue

6496

Issue Date

2017-01-01

Receive Date

2016-09-22

Publish Date

2017-01-01

Page Start

91

Page End

107

Print ISSN

1110-2594

Online ISSN

2682-3330

Article File

EJRS_Volume 27_Issue 1_Pages 91-107.pdf

PDF . 1.1MB

Link

https://ejrs.journals.ekb.eg/article_41835.html

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https://ejrs.journals.ekb.eg/service?article_code=41835

Order

6

Type

Original Article

Type Code

868

Publication Type

Journal

Publication Title

Egyptian Journal of Rabbit Science

Publication Link

https://ejrs.journals.ekb.eg/

MainTitle

EFFECTS OF DIETARY SUPPLEMENTATION WITH ZINC AND BETAINE ON GROWTH PERFORMANCE AND SOME PHYSIOLOGICAL RESPONSES FOR GROWING RABBITS UNDER HOT CONDITIONS

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Article

Created At

22 Jan 2023