EFFECT OF USING ENVIRONMENTALLY SAFE YEASTS AS RATION ADDITIVES AND NATURAL PRESERVATIVES ON BROILERS
Mahmoud Farouk Abdel-Aziz Mohamed;
Abstract
The present study was carried out at Al-Nahda Poultry Farm Cairo, Regional Center for Food and Feed (RCFF) and all chemical analyses were performed at the laboratories of the Regional Center for Food and Feed (RCFF), Agriculture Research Center, Giza, Egypt.
The present study designed to evaluate;
1. The effects of dietary (Saccharomyces cerevisiae) live yeast.
2. The effects of dietary yeast cell wall supplementation.
3. The effects of dietary combination between live yeast + yeast cell wall.
on the growth performance (life body weight, body weight gain, feed intake, feed conversion ratio, mortality rate, and some carcass traits, intestine microbiology and histopathology on broilers.
Chicks were fed diets; starter diets up to 12 days of age, grower diets up to 24 days of age and then, finisher diets up to 34 days of age. The diets were formulated to cover the chick requirements as recommended by the management guide data (Ross). Water and feed were offered ad-libitum and free from any medication as growth promoters, antibiotics or anticaking according to experimental diets.
At the end of experimental period (5 weeks of age), birds were randomly chosen from each group, fasted overnight, individually weighed, then slaughtered by sharp knife to complete bleeding, and their feather were removed. At autopsy, the abdominal cavity was opened and the liver, heart, gizzard and abdominal fat were removed and weighted. Their weights were recorded in gram to the nearest 0.001g. The eviscerated carcass was individually weighted and the carcass percentage was recorded.
The results obtained from this study are summarized as follow:
1. The final body weight and weight gain for broiler fed on diet supplemented by 3.0 gm yeast were higher significantly (P>0.05) than those fed on control diet.
2. FCR was improved for those fed diet supplemented by 3.0 gm yeast.
3. There were significant differences between treatment groups in carcass %, where no significant differences where observed for intestine, liver, heart, gizzard, and intestine between treatments.
4. There was no significant difference for small intestine pH measurements between treatments.
5. Results recorded Increased yeasts and lactic acid bacteria levels showed in small intestine for the treatments fed 2.0 or 3.0 gm live yeast and interaction with all levels with yeast cell wall.
6. The 3.0 gm yeast/kg diet enhanced villi height and width, the number and size of
The present study designed to evaluate;
1. The effects of dietary (Saccharomyces cerevisiae) live yeast.
2. The effects of dietary yeast cell wall supplementation.
3. The effects of dietary combination between live yeast + yeast cell wall.
on the growth performance (life body weight, body weight gain, feed intake, feed conversion ratio, mortality rate, and some carcass traits, intestine microbiology and histopathology on broilers.
Chicks were fed diets; starter diets up to 12 days of age, grower diets up to 24 days of age and then, finisher diets up to 34 days of age. The diets were formulated to cover the chick requirements as recommended by the management guide data (Ross). Water and feed were offered ad-libitum and free from any medication as growth promoters, antibiotics or anticaking according to experimental diets.
At the end of experimental period (5 weeks of age), birds were randomly chosen from each group, fasted overnight, individually weighed, then slaughtered by sharp knife to complete bleeding, and their feather were removed. At autopsy, the abdominal cavity was opened and the liver, heart, gizzard and abdominal fat were removed and weighted. Their weights were recorded in gram to the nearest 0.001g. The eviscerated carcass was individually weighted and the carcass percentage was recorded.
The results obtained from this study are summarized as follow:
1. The final body weight and weight gain for broiler fed on diet supplemented by 3.0 gm yeast were higher significantly (P>0.05) than those fed on control diet.
2. FCR was improved for those fed diet supplemented by 3.0 gm yeast.
3. There were significant differences between treatment groups in carcass %, where no significant differences where observed for intestine, liver, heart, gizzard, and intestine between treatments.
4. There was no significant difference for small intestine pH measurements between treatments.
5. Results recorded Increased yeasts and lactic acid bacteria levels showed in small intestine for the treatments fed 2.0 or 3.0 gm live yeast and interaction with all levels with yeast cell wall.
6. The 3.0 gm yeast/kg diet enhanced villi height and width, the number and size of
Other data
| Title | EFFECT OF USING ENVIRONMENTALLY SAFE YEASTS AS RATION ADDITIVES AND NATURAL PRESERVATIVES ON BROILERS | Other Titles | اثر استخدام بعض الخمائر الامنة بيئيا كإضاف ات علفية وحافظات طبيعية علي دجاج التسمين | Authors | Mahmoud Farouk Abdel-Aziz Mohamed | Issue Date | 2018 |
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