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Ain Shams University (2017)

STUDYING THE IMPACT OF ADDING PROBIOTIC ON THE PRODUCTIVE PERFORMANCE OF BROILER STRAINS UNDER ENVIRONMENTAL CONDITIONS OF EGYPT

ELSHAHED, EMAD ELDIN AHMED FAHMY ALI AHMED

Titre : STUDYING THE IMPACT OF ADDING PROBIOTIC ON THE PRODUCTIVE PERFORMANCE OF BROILER STRAINS UNDER ENVIRONMENTAL CONDITIONS OF EGYPT

Auteur : ELSHAHED, EMAD ELDIN AHMED FAHMY ALI AHMED.

Etablissement de soutenance : Ain Shams University

Grade : Master of Science (MSc) in Agricultural Science (Agriculture and Desert Areas Affected by Salinity) 2017

Résumé partiel
This experiment was carried out at poultry breeding farm in Shalakan, Poultry Production Department, Faculty of Agriculture, and Ain Shams University. It designed to evaluate the productive performance for broiler strain when probiotics added for the broiler diet and exposed to high temperature during the first week under environmental conditions of Egypt. Some measurements taken in this study like : (body weight – body weight gain – feed consumption – feed conversion ratio - carcass characteristics - abdominal fat – blood parameters – Pha-p Cell-mediated immunity). The main results could summarize as follows : 1. Body weight and gain Body weight. • The broiler chicks group added probiotics by 50gm/100kg feed and exposed to high temperature during the one week of old was significantly heaviest body weight in all period of experimental another 5-week compared to other groups. • It was concluded that the marketing weight (5wk) of control + broiler chicks was exposed to high temperature during the one week of old significantly heavier than that other groups. In the same trend observed that in body weight gain (0-5 weeks) higher than the same group for the other of the groups. • The body weight gain between (0-5 weeks) was higher for (Control+) exposed of heat stress treatment than the other of the groups. 2. Feed consumption & Feed conversion ratio and Body weight gain • The present result showed that the broiler chicks groups added probiotic and exposed of heat stress were significantly consumed more feed from 14 to 28 days of age compared to control (-&+) broiler chicks. • from 28 to 35 days of age, it could be noticed that the control exposed of heat stress broiler chicks were significantly consumed less feed compared to the remaining groups. • Concerning feed conversion ratio, it could be observed that the control positive broiler chicks had better feed conversion ratio calculated from 14 to 28 days compared to other groups. • With respect to the body weight gain, the present result showed that there was no significant difference among groups for body weight gain calculated from 14 to 28 days of age. • Inversely, from the later stage of growth (28 to 42 day) of age, the control negative broiler chicks were significantly higher body weight gain compared to remaining groups from 14 to 42 days of age, it could be noticed that the pro.50g treatment broiler chicks recorded the lowest value compared to other groups. 3. Carcass characteristics • The present results were no significant difference indicated that the body weight of treated-groups was heaviest than that of control negative group. • It could be observed that the control of exposed of heat stress significantly decreased the relative inedible meat parts compared to remaining control group and others treatments. • Our results showed that the broiler chicks added probiotic 100g and exposed of heat stress recorded higher dressing percentage values compared to other groups and observed that the negative control recorded lower value.

Présentation étendue (EULC)

Page publiée le 31 mars 2019