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| Articles
by
S.N. Ukachukwu |
Total Records (
2 ) for
S.N. Ukachukwu |
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G.S. Ojewola
,
S.N. Ukachukwu
and
E.I. Okulonye
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In a 6 week feeding trial,
cottonseed meal was substituted for soyabean meal at 0,25, 50, 75 and
100% and the diets were respectively designated as diets 1, 2, 3, 4
and 5 in a completely randomized design. Biologic and economic performance
were investigated. Birds were fed and watered ad-libitum. The
results showed that there were no significant differences (P>0.05) in
the bird`s mean daily weight gain and feed-to-gain ratio while the mean
daily feed intake was significantly (P< 0.05) influenced. Birds fed diets
3 and 4 respectively consumed 150.93g and 153.68g. This was closely
followed by diets 5 and 2. Numerically, birds fed diet 3 gave the highest
weight gain (2666.6g) while diet 1 was the least (2443.27g). The nutrient
utilization analysis showed significant differences (P< 0.05). Diet 5
had the highest percent mean values for nitrogen (81.45), crude fibre
(60.81), ether extract (95.57), ash (66.79) and dry matter (85.72) retentions
while birds fed diet 1 was least for same parameters. Mineral utilization
followed the same trend; diet 5 was the highest (69.08), (84.72), (71.91),
(79.39) for phosphorous, potassium, calcium and magnesium respectively
while diet 1 gave least values for same parameters. Diet 5 was found
to be the cheapest (N290.01) and savings were significantly (P< 0.05)
improved with the use of this diet while diets 1 and 3 had the least
values of N285.94 and N302.67 respectively for marginal revenue. Though,
the diets were comparable, diet 5 showed superior indices for nutrient
utilization and economics of production. In conclusion, there is an
indication that iron treated cotton seed meal can serve as a substitute
for soyabean meal in broiler diet. |
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A.I. Ndubueze
,
S.N. Ukachukwu
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F.O. Ahamefule
and
J.A. Ibeawuchi
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The influence of supplementation
of poultry waste-cassava peel based diets on milk yield and composition
of White Fulani (Bunaji) cows were evaluated in this study. Four cows
in 2nd parity and mid-lactation stage were fed 4 concentrate diets (A,
B, C, D) consecutively in a 4x4 latin square arrangement. The diets
were formulated from poultry waste, cassava peel, palm kernel cake,
molasses, bone meal and common salt. The percent compositions of dried
poultry waste (DPW) and cassava peel in the diets were 0, 56.5; 10,
53.5; 20, 43.5 and 30, 33.5 %, respectively. Each animal received each
diet for 24 days. Daily feed intake (g/d), average daily gain (g/d),
milk yield (g/d) and composition (%), feed conversion ratio (FCR) and
fat – corrected milk (FCM) were determined for each cow per dietary
regime. Results showed that feed intake and milk yield were not affected
(P>0.05) by diets. FCM (kg) however, differed among treatments with
diets A (0.21) and B (0.24) having similar (P>0.05) but higher FCM yields
than diets C (0.07) or D (0.13). Milk protein (Nx6.38), butterfat (BF),
total solids (TS), lactose, solids-not-fat (SNF), ash and energy contents
of milk did not vary (P>0.05) significantly. Feed conversion ratio was
0.70 for diet B and this value was superior (P< 0.05) to the corresponding
values obtained for diets A (0.91), C (2.45) and D (1.56). The relationships
between TS and energy (r = 0.54) and BF and energy (r = 0.98) were positive
and significant (P< 0.05). Non-significant (P>0.05) negative correlation
existed between milk yield and TS (r = - 0.02), milk yield and BF (r
= -0.04), and milk yield and milk protein (r = -0.23). Milk yield was
generally poor probably due to low level of supplementation. |
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