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171542

ENERGY AND NITROGEN BALANCES AS AFFECTED BY ANIMAL SPECIES AND INTAKE LEVEL UNDER DESERT CONDITIONS

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Last updated: 04 Jan 2025

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Abstract

Thirty-two adult dry females, age 4-5 yrs.; Balady goats (n= 16 and average body weight 31.11 ± 1.63 kg) and Barki sheep (n= 16 and average body weight 34.53 ±1.56 kg) were used to study effects of long-term restricted feeding regime on body weight changes and balance of energy and protein. Animals of each species were allocated to two levels of feed intake; control feeding treatment (CON) where animals were fed a diet at a level of feeding to meet approximately the metabolizable energy for maintenance requirement (MEm), while those on the other dietary treatment was fed almost 50% of these quantities on a BW basis, termed as the restricted treatment (restricted; RES). Alfalfa hay and concentrate feed mixture (50:50% as DM basis) were given based on requirement recommendations. The results could be summarized as follows: The ADG was not affected (P<0.05) by animal species (BG vs. SH), however, it was affected (P<0.01) by feed intake level where the RES animal group showed a negative ADG (-65.6 g/d) compared with the CON group that achieved positive ADG (36.4 g/d). Both of SH and BG had similar negative energy balance (EB) values (67.0 vs. 61.4 KJ/ kg0.75/d, for BG and SH respectively). Nitrogen balance (NB) was greater (P<0.01) for SH (107.64 mg/kg0.75/d ) vs. BG (89.47 mg/kg0.75/d) and was greater (P<0.01) for animals fed on CON intake (251.47 vs. 208.55 mg/kg0.75/d, respectively) than those fed on RES intake (-36.18 vs. -29.62 mg/kg0.75/d, respectively), which gave a negative NB. It could be concluded that with desert conditions, sheep may have an advantage in a decreasing Metabolizable energy for maintenance (MEm) requirement and reduction in heat production of a magnitude adequate to maintain body weight. There is a similar rate of using the energy between sheep and goats with moderate or limited nutrition planes

DOI

10.21608/mjapfp.2020.171542

Keywords

Barki sheep, Balady goats, Feed intake level, digestibility, energy balance, nitrogen balance

Authors

First Name

A.R.

Last Name

Askar

MiddleName

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Affiliation

Department of Animal and Poultry Nutrition, Desert Research Center, P.O. BOX 11753, Egypt

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City

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Orcid

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First Name

K.M. Abdel-

Last Name

Rahman

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Menoufia University, Egypt

Email

-

City

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Orcid

-

First Name

H.T.

Last Name

Taie

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Menoufia University, Egypt

Email

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City

-

Orcid

-

First Name

K.Z.

Last Name

Kewan

MiddleName

-

Affiliation

Department of Animal and Poultry Nutrition, Desert Research Center, P.O. BOX 11753, Egypt

Email

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City

-

Orcid

-

First Name

H.S.

Last Name

Badawy

MiddleName

-

Affiliation

Department of Animal and Poultry Nutrition, Desert Research Center, P.O. BOX 11753, Egypt

Email

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City

-

Orcid

-

First Name

F.F.

Last Name

Fayed

MiddleName

-

Affiliation

Department of Animal and Poultry Nutrition, Desert Research Center, P.O. BOX 11753, Egypt

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-

City

-

Orcid

-

Volume

4

Article Issue

6

Related Issue

24974

Issue Date

2020-10-01

Receive Date

2021-05-23

Publish Date

2020-10-01

Page Start

87

Page End

102

Print ISSN

2357-0814

Online ISSN

2735-3478

Article File

MJAPFP_Volume 4_Issue 6_Pages 87-102.pdf

PDF . 473.5kB

Link

https://mjapfp.journals.ekb.eg/article_171542.html

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https://mjapfp.journals.ekb.eg/service?article_code=171542

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Original Article

Type Code

1,384

Publication Type

Journal

Publication Title

Menoufia Journal of Animal Poultry and Fish Production

Publication Link

https://mjapfp.journals.ekb.eg/

MainTitle

ENERGY AND NITROGEN BALANCES AS AFFECTED BY ANIMAL SPECIES AND INTAKE LEVEL UNDER DESERT CONDITIONS

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Article

Created At

23 Jan 2023