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Research
(Published
online: 08-12-2014)
3.
Effect of dietary phytoestrogens, feed restriction, and their
interaction on reproductive status of broiler pullets -
A. D. Madnurkar, A. S. Shinde, L. Chouhan, V. Singh, J. Mohan and
R. P. Moudgal
Veterinary World, 7(12): 1041-1046
doi:
10.14202/vetworld.2014.1041-1046
A. D.
Madnurkar:
Division of Poultry Science, Central Avian Research Institute,
Izatnagar - 243 122, Uttar Pradesh, India; madnurkararjun@gmail.com
A. S.
Shinde:
Division of Poultry Science, Central Avian Research Institute,
Izatnagar - 243 122, Uttar Pradesh, India; anil.ivri@gmail.com
L.
Chouhan:
Department of Poultry Science, College of Veterinary Science and
Animal Science, Mhow, Indore, Madhya Pradesh, India; drlaxmimhow@gmail.com
V.
Singh:
Division of Poultry Science, ICAR Research Complex for NEH Region,
Tripura Centre, Lembucherra, Agartala, Tripura, India; vinvet1@gmail.com
J.
Mohan:
Division of Poultry Science, Central Avian Research Institute,
Izatnagar - 243 122, Uttar Pradesh, India; mohanjagjag@rediffmail.com
R. P.
Moudgal:
Division of Poultry Science, Central Avian Research Institute,
Izatnagar - 243 122, Uttar Pradesh, India; rpmudgal@hotmail.com
Received:
14-08-2014, Revised: 02-11-2014, Accepted: 10-11-2014, Published
online: 08-12-2014
Corresponding author:
A. S. Shinde, e-mail: anil.ivri@gmail.com
Abstract
Background and Aim: A major problem faced by the broiler
industry around the world is a lowered reproductive fitness of
breeding hens which can cause major economic impact in terms of
lowered hatchable egg production. In broiler breeders, a lot of
the selection pressure has been exerted on growth, conformation
and feed efficiency as a result broiler breeder hens are prone to
several metabolic disorders and reproductive anomalies. Present
study was conducted to assess the effect of phytoestrogen, feed
restrictions (75% of their control ad libitum), and
their interaction on reproductive parameters in high and low body
weight broiler breeder hens.
Materials and Methods: One hundred twenty-eight healthy female
broiler breeder pullets were divided randomly into eight groups
from the same hatch and strain. They were transferred to
individual laying cages. Birds received ad libitum drinking
water and feeding, depend on divided group i.e., ad libitum
or restricted feeding (75% of control ad libitum)
counterpart separately for heavy or low body weight till first egg
laid in respective groups. Experimental diets made with practical
feed ingredients as per institution recommendation (broiler
breeder ration) as per experimental planning.
Results: Phytoestrogen significantly (p<0.05) improved egg
number and size in broiler breeding hens by checking reproductive
anomalies (internal laying, double hierarchy, and follicular
atresia), restructuring ovarian, and oviductal functional
development besides improved physiological maturation of
infundibulum. Unlike phytoestrogen, feed restriction as expected
delayed the age of sexual maturity but helped in a reduction of
ovary weight, number of yellow follicle, number of atretic yellow
follicle, incidence of double hierarchy, and internal ovulation.
Interaction between phytoestrogen and feed restriction did not
give any additional remunerative advantage.
Conclusions: It is concluded that phytoestrogens and limited
feed restriction likely to improve reproductive efficiency around
age of sexual maturity by overcoming the reproductive anomalies
and modulating the ovarian and oviduct maturation favorably in
broiler breeder hen.
Keywords: broiler breeder, feed restriction, phytoestrogen,
reproductive parameters.
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