The effect of beta-benzene hexachloride, gamma-benzene hexachloride, gamma chlordane and cadmium on growth and development of the ovary of mallard duck (Anas platyrhynchos)

Date

5-2011

Degree

Bachelor of Science in Agriculture

Major Course

Major in Animal Science

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Capitan, Severino S.

Abstract

One hundred forty seven (147) mallard ducks aged 12 weeks were randomly selected and distributed to 7 dietary treatments replicated 3x with 7 birds per replicate in a completely randomized design. The treatments were as follows: T1 - 0.05mg/L Cd in acetone, T2 - 0.1mg/L Cd in acetone, T3 - 100ng/mL beta BHC, T4 - 7.14ng/mL gamma BHC, T5 - 1.43ng/mL gamma Chlordane, T6 - 100 ng/mL beta-estradiol in acetone, and T7 - pure commercial feeds with acetone. Exposure to the chemicals for 12 weeks did not influence the rate of growth and gonad weight of mallard ducks. The weight of the ovaries ranged from 0.36g (ducks fed diet containing 100ng/mL beta BHC) to 1.25g (ducks fed diet containing 0.1mg/L cadmium). GSI of growing ducks was also not influenced by the toxic chemicals used. It ranged from 0.03% for most of treated ducks to 0.09% for beta-estradiol and 0.1 mg/L cadmium treated birds. Ducks exposed to 0.1mg/L cadmium had the lowest mean ovum weight (0.04g), while those that received 100ng/mL beta BHC did not show follicle development. The results indicate that exposure of ducks to cadmium and beta BHC for 12 weeks significantly (P<0.05) depressed follicular development. Moreover, ducks exposed to 0.1mg/L Cd had the smallest (P<0.01) mean ovum diameter (0.02cm), while those that received 100ng/mL beta BHC did not produce any follicle that can be measured.

Language

English

Location

UPLB College of Veterinary Medicine

Call Number

LG 993.5 2011 A5 /A24

Document Type

Thesis

This document is currently not available here.

Share

COinS