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Effects Of Different Pre-Starter Diets On Broiler Performance, Organs Development, Gastro Intestinal Tract Development And Body Composition

By: Muhammad Sami Ullah | Prof.Dr.Talat Naseer Pasha.
Contributor(s): Dr. Farina M Khatak | Dr. Saima.
Material type: materialTypeLabelBookPublisher: 2010Subject(s): Department of Animal NutritionDDC classification: 1156,T Dissertation note: We examined the effects of feeding pre-starter crumble diets for a period of 1 to 10 days. One hundred and fifty day-old broiler chicks (Hubbard Classic) were purchased and the birds were divided into five groups (A, B, C, D & E) with three replicates having ten chicks each. Diets were fed with different metabolizable energy (varied from 2750 to 2850 kcal of ME/kg) but same crude protein level (21%) with different lysine levels (varied from 1.3 to 1.5%). After 10 days single starter and finisher crumble diets were fed to the birds up to 28 and 35 days of age respectively. A linear effect of ME from 2750 to 2850 was found on body weight in Treatments A (ME=2750kcal/kg; CP=21%; lysine=1.4%), B (ME=28000kcal/kg; CP=21%; lysine=1.4%) and D (ME=2850kcal/kg; CP=21%; lysine=1.4%) after 35 days of age. Minimum growth was observed in Treatment E (ME=2850kcal/kg; CP=21%; lysine=1.5%) after 35 days of age. There was linear improvement in feed intake in groups C, D and E with higher ME i.e 2850 and varying lysine from 1.3, 1.4 and 1.5% respectively and this trend remained same from 0-35 days of age. Better FCR with good body weight were observed in treatments B and D with FCR 1.78 and 1.75 respectively at the end of experiment. Statistical analysis of body weight after first week revealed significant difference (P<0.05) among the treatments B and C. Statistical analysis of body weight after 35 days revealed significant difference (P<0.05) among A, C, D and E. Statistical analysis for Body composition, organs weights, G I tract and Intestinal weights revealed non-significant differences (P>0.05). This study indicates that it is better to increase energy up to 2850kcal/kg with lysine 1.4 % in pre-starter diets for better performance, gut development, dressing percentage and above all a good start for good overall performance at 35 days of age.
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We examined the effects of feeding pre-starter crumble diets for a period of 1 to 10 days. One hundred and fifty day-old broiler chicks (Hubbard Classic) were purchased and the birds were divided into five groups (A, B, C, D & E) with three replicates having ten chicks each. Diets were fed with different metabolizable energy (varied from 2750 to 2850 kcal of ME/kg) but same crude protein level (21%) with different lysine levels (varied from 1.3 to 1.5%). After 10 days single starter and finisher crumble diets were fed to the birds up to 28 and 35 days of age respectively. A linear effect of ME from 2750 to 2850 was found on body weight in Treatments A (ME=2750kcal/kg; CP=21%; lysine=1.4%), B (ME=28000kcal/kg; CP=21%; lysine=1.4%) and D (ME=2850kcal/kg; CP=21%; lysine=1.4%) after 35 days of age. Minimum growth was observed in Treatment E (ME=2850kcal/kg; CP=21%; lysine=1.5%) after 35 days of age. There was linear improvement in feed intake in groups C, D and E with higher ME i.e 2850 and varying lysine from 1.3, 1.4 and 1.5% respectively and this trend remained same from 0-35 days of age. Better FCR with good body weight were observed in treatments B and D with FCR 1.78 and 1.75 respectively at the end of experiment. Statistical analysis of body weight after first week revealed significant difference (P<0.05) among the treatments B and C. Statistical analysis of body weight after 35 days revealed significant difference (P<0.05) among A, C, D and E. Statistical analysis for Body composition, organs weights, G I tract and Intestinal weights revealed non-significant differences (P>0.05). This study indicates that it is better to increase energy up to 2850kcal/kg with lysine 1.4 % in pre-starter diets for better performance, gut development, dressing percentage and above all a good start for good overall performance at 35 days of age.

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