1.
Effect Of Substitution Of Fish Meal With Cotton Seed Meal On Performence Of Broiler Chicks
by Umer Malik, M | Dr. Nisar Ahmad | Dr M. Javed Qurshi | Dr. M. Aslam.
Material type: ; Format:
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Publisher: 1994Dissertation note: The present study was under taken to investigate the effect of substitution of fish meal which is comparatively costly protein supplement with cheaper cotton seed meal on performance of broiler chicks. As one hundred and eighty Star Bro day old broiler chicks were reared on five experimental rations upto 50 day of age. The control ration contained 12 % fish meal (100 %) which was replaced by the cotton seed meal at 0, 4.17, 7.39, 11.03 and 14.72 % level (0, 25, 50, 75 and 100% on Protein equivalent basis). The starter rations were fed upto 28 days of age and finisher rations were fed upto 50th day.
Results revealed however non significant difference among weight gain of chicks fed on different experimental starter rations. But significant differences among weight gain of chicks fed on finisher rations were noticed.
The chicks fed on rations containing 100%,75%, 50% and 25% fish meal were heavier as compared to those chicks fed on rations in which fish meal was replaced by cotton seed meal on protein equivalent basis. Non significant differences in total weight gain were noticed amongst chicks fed on different experimental rations. highly significantly more feed was consumed by the chicks fed on starter and finisher rations containing 100%, 75%, and 50% fish meal as compared to those chicks fed on other experimental rations. Apparently better feed utilization in chicks were noticed by addition of cotton seed meal at different levels i.e 4.17, 7.39 and 11.03 % in the starter and finisher rations. However non significant differences among the feed efficiency values were observed in chicks fed on various experimental rations. However dressing % of all the birds fed on different rations was found non significant. Present study indicated that addition of cotton seed meal did not significantly effect the growth rate, however, slightly decreased growth rate was observed with progressive increase of cotton seed meal in the ration. Feed efficiency was comparable with that of fish meal. Results also indicated that ration containing cotton seed meal were comparatively cheaper and cost per Kg of live weight was decreased. Therefore, net profit per chick was greater.
Availability: Items available for loan: UVAS Library [Call number: 0394,T] (1).
2.
Studies On The Use Of Brewer'S Dried Yeast (Saccharomyces Yeast) As Vegetable Protein Source In Broiler
by Zahid Hussain | Dr. Nisar Ahmad | Dr. Jawad Ahmad Qureshi | Dr. M. Aslam.
Material type: ; Format:
print
Publisher: 1994Dissertation note: As about 60% of the total cost of poultry production incurs on feed, therefore, it is the major component, which mostly affects the economical poultry production. Unfortunately the poultry industry of Pakistan is mainly affected by substandard poultry feeding, which is due to limited availability of quality feed resources particularly protein sources. The incorporation of various non- conventional vegetable protein sources in poultry feed, if properly added have given satisfactory results.
Keeping in view a study was conducted to determine the nutritional value of Brewer's dried yeast replacing sesame meal on growth rate and feed utilization of broiler chicks.
Two hundreds and ten day old broiler chicks were randomly divided into seven groups of 30 birds each so as to have three replicate per group, each having ten chicks. The chicks were fed on seven different experimental rations A to G containing Brewer's dried yeast at 0, 5, 10, 15, 20, 25 and 30% of the ration respectively replacing sesame meal.
The results indicated that average weight gain of the chicks fed experimental ration A to G was 1203, 1175, 1175, 1166, 1138, 1127 and 1096 grams respectively. There was a proportionate depression in weight gain as the level of Brewer's dried yeast was increased. The proportionate depression in weight gain with increasing level of Brewer's dried yeast replacing sesame meal could be attributed to poor quality amino acid profile or biological value of the yeast as compared with sesame meal. It could also be attributed to certain anti-nutritional factors or high amounts of nucleic acids of yeast. The feed consumption of the chicks fed experimental ration A to G was 2516, 2484, 2526, 2502, 2436, 2501 and 2469 grams respectively. The chicks fed ration C consumed greater amount of feed, while the chicks fed ration E had the poor feed consumption. The feed consumption showed no proper pattern as was observed in case of weight gain and there was non-significant difference in feed consumption of different groups of chicks The feed conversion ratio of the chicks fed experimental rations A to C was 2.06, 2.11, 2.15, 2.15, 2.14, 2.15 and 2.15 respectively. The results indicated that the chicks fed ration A had the best feed conversion ratio of 2.06 and the feed conversion ratio was adversely affected on account of incorporation of Brewer's dried yeast. The dressed weight of the chicks fed ration A to 0 was 612, 600, 599, 593, 577, 577 and 555 grams respectively. The dressed weight showed the same trend as was observed in weight gain. The dressing percentage was 50.9, 50.1, 50.4, 51.30, 50.80, 51.20 and 50.60 percent respectively and there was hon-significant difference among difference groups. Similarly the weight of internal organs of the chicks per 100 grams of dressed weight i.e. Liver, Spleen, Pancreas, Heart and Gizzard showed non-significant difference among different groups. The economics of incorporation of Brewer's dried yeast revealed that the replacement of sesame meal with Brewer's dried yeast was economically viable.
Availability: Items available for loan: UVAS Library [Call number: 0417,T] (1).
