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47466

PRODUCTIVE AND PHYSIOLOGICAL RESPONSES OF NEW ZEALAND WHITE RABBIT MALES TO DIETARY ORGANIC CHROMIUM ADDITION

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Last updated: 04 Jan 2025

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Abstract

This study aimed to evaluate the effect of organic chromium element (chromium yeast) as feed additive on performance of rabbit males at pre and post-sexual maturity. A control diet was formulated with an estimated proportion of 18% crude protein and 14% crude fibre. Another three diets were formulated supplementing control diet with 1.5, 2.0 and 2.5 mg chromium yeast (Cr-yeast) /kg diet. Fifty two weaned New-Zealand White (NZW) male rabbits aged 35 days and weighing 657 ± 5.27 g were used (13 per diet) overfeeding experiment which lasted 198 days. Daily weight gain and feed intake were recorded from weaning up to 92 d of age (marketing age). At this time eight rabbits from each group were allowed to reach sexual maturity. Blood samples were collected at 120 and 150 d of age from five bucks of each group. At the age of sexual maturity several reproductive traits were also recorded.
Results revealed that Cr-yeast addition at the highest level (2.5 mg/kg diet) significantly (P≤0.05) increased the final body weight, daily weight gain, feed efficiency and plasma testosterone concentration. The minimum puberty age was obtained by 2.5 mg Cr-yeast inclusion/kg diet. Sexual activity evaluation of rabbit bucks was not significantly affected by Cr-yeast addition. Advanced-sperm motility, alive spermatozoa and morphological normal spermatozoa were significantly (P≤0.05) increased by Cr-yeast inclusion, being optimized for 2.5 mg/kg diet.
In conclusion, the addition of 2.5% Cr-yeast to the growing and mature NZW male rabbit diets improved growth and reproductive performance.
 

DOI

10.21608/ejrs.2014.47466

Keywords

Rabbit males, Chromium, Growth performance, Reproduction, semen quality. Reproduction aspects of male rabbit play

Authors

First Name

Khaled

Last Name

El kholy

MiddleName

Hassan

Affiliation

Depart. Of Poul. Prod., Fac. of Agric., Damietta Univ., Damietta, Egypt.

Email

khelkholy@yahoo.com

City

Damietta Univ.

Orcid

-

First Name

Hoda

Last Name

Shabaan

MiddleName

-

Affiliation

Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.

Email

-

City

Agricultural Research Center, Dokki, Giza

Orcid

-

First Name

Salah

Last Name

Gaballah

MiddleName

-

Affiliation

Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.

Email

-

City

Agricultural Research Center, Dokki, Giza

Orcid

-

First Name

El Sayed

Last Name

Abdel-Kafy

MiddleName

-

Affiliation

Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.

Email

-

City

Agricultural Research Center, Dokki, Giza

Orcid

-

First Name

Mervat

Last Name

Ghazal

MiddleName

-

Affiliation

Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.

Email

mervanabil@yahoo.com

City

-

Orcid

-

Volume

24

Article Issue

1

Related Issue

6597

Issue Date

2014-01-01

Receive Date

2013-08-08

Publish Date

2014-01-01

Page Start

1

Page End

18

Print ISSN

1110-2594

Online ISSN

2682-3330

Article File

EJRS_Volume 24_Issue 1_Pages 1-18.pdf

PDF . 616.4kB

Link

https://ejrs.journals.ekb.eg/article_47466.html

Detail API

https://ejrs.journals.ekb.eg/service?article_code=47466

Order

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Type

Original Article

Type Code

868

Publication Type

Journal

Publication Title

Egyptian Journal of Rabbit Science

Publication Link

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

MainTitle

PRODUCTIVE AND PHYSIOLOGICAL RESPONSES OF NEW ZEALAND WHITE RABBIT MALES TO DIETARY ORGANIC CHROMIUM ADDITION

Details

Type

Article

Created At

22 Jan 2023