A STUDY ON THE GROWTH PERFORMANCE OF JAPANESE QUAIL FED VARIOUS LEVELS OF RAPESEED MEAL (RSM) (Brassica napus).
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Date
2024-02
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SRI VENKATESWARA VETERINARY UNIVERSITY, TIRUPATI - 517 502. (A.P.) INDIA
Abstract
A biological trial was conducted to evaluate the effect of dietary incorporation of
Rapeseed meal (RSM) in diets of Japanese quail on growth performance, serum
biochemical profile, carcass traits, sensory parameters and cost economics of Japanese
quail.
Day old Japanese quails (n=150) were distributed randomly into five treatment
samples each with three replicates containing ten birds each and were maintained under
uniform management conditions. Experimental diets were prepared with incorporation of
RSM at 0% (T1: control diet), 10% (T2), 15% (T3) 17.5% (T4) and 20% (T5) levels by
marginal adjustment of other feed ingredients. All the rations were made iso-caloric and
iso-nitrogenous. Feed and water were provided ad libitum. The birds were housed in
battery cages during the experiment period of 0-5 weeks.
Chemical analysis indicated that RSM contained 93.78% DM, 91.61% OM,
41.80% CP, 1.14% EE, 13.31% CF, 35.79% NFE, 8.39% total ash and 1.97% AIA.
The results of current study revealed that mean body weights, mean body weight
gains, mean feed intake and FCR had no significant effect.
Two birds per replicate and total of six birds per treatment were slaughtered at the
end of fifth week and the blood samples were collected. Serum triglycerides and serum
VLDL-C levels were significantly (p<0.01) decreased with increasing levels of RSM.
But, serum total protein, serum albumin, globulin, albumin: globulin ratio, serum total
cholesterol, serum HDL-C, serum LDL-C, SGOT, SGPT, serum calcium, serum
phosphorus, serum glucose, BUN and creatinine levels were not affected by different
levels of RSM.
The carcass traits such as mean dressing percentage, mean carcass weight, mean
per cent weights of heart, liver, gizzard and giblet of quails revealed that incorporation of
RSM up to 20% level had no effect.
The meat quality parameters such as pH, extract release volume (ERV) and water
holding capacity (WHC) of meat of quails revealed that incorporation of RSM up to 20%
level had no effect.
In sensory evaluation of meat, mean scores for all the parameters like colour,
juiciness, tenderness and overall acceptability of meat revealed that incorporation of RSM
up to 20% level had no effect.
The percent retention of organic matter (OM), crude fiber (CF) and nitrogen free
extract (NFE) were not significantly affected. Whereas the percent retention of dry matter
(DM), crude protein (CP) and ether extract (EE) were significantly (p<0.05) decreased
with increasing levels of RSM up to 20% but did not show any significant effect up to
15%.
The feed cost / kg gain was significantly lower (p<0.01) in quails fed with 20%
RSM as compared with other treatment groups. The study indicated that the feed cost /kg
gain were ₹ 126.31, 129.78, 122.94, 118.87 and 113.50 for T1, T2, T3, T4 and T5,
respectively.
It was concluded that RSM can safely be incorporated up to 20% level in the diet
without any adverse effect on performance of quails.