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Author: search.filters.author.Klompanya, A.Subject: search.filters.subject.Growth performance

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    Effects of partial substitution of feed with spent coffee grounds on growth performance and carcass quality in broilers
    (2024-03-01)
    Klompanya, A.
    ;
    Mitchaothai, J.
    ;
    Thammakarn, C.
    The research findings found that the spent coffee grounds (SCG) substitution with 5% and 10% in feed (SCG-5 and SCG-10) which exhibited significant (P<0.01) effect on average daily gain with 80.82 and 66.84 g/day as compared to 0% substitution (SCG-0), which 88.62 g/day. While the the affecting on feed conversion ratio was shown in SCG-10 (2.05), which significantly (P<0.01) higher than SCG-5 (1.78) and SCG-0 (1.73). Similar to the carcass quality, SCG-10 was significantly (P<0.01) exhibited lower carcass weight (2,023.38 g) than SCG-5 and SCG-0 (2,267.48 and 2,319.70, respectively). However, there was no significant difference in the percentage of the carcass. Furthermore, substituting SCG in the feed had no impact on the weight of major muscles, such as the breast and thigh muscles. The inclusion of SCG-10 and SCG-5 was significantly increased in liver weight (P<0.05). However, only a high substitution rate of 10% SCG was significantly decreased in abdominal fat (P<0.01) as compared to the inclusion levels of 5% and 0% in the feed. In conclusion, substituting 5% SCG into the feed had shown to be a marginal impact on production efficiency, while a 10% SCG substitution rate distinctly influenced both production efficiency and carcass quality.
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    Effects of dietary crude protein level and stocking density on growth performance, nutrient retention, blood profiles, and carcass weight of growing-meat quails
    (2019-12-01)
    Boontiam, W.
    ;
    Sangsoponjit, S.
    ;
    Klompanya, A.
    Two experiments were conducted to evaluate the effect of stocking density on growing-meat quail perform-ance (experiment I) and the effect of dietary crude protein (CP) levels and stocking density on growth per-formance, nutrient retention, blood metabolites, and carcass weight of growing-meat quails under high am-bient temperature (experiment II). Three hundred and eighty male growing-meat quails were raised under 4 different stocking densities of 13, 17, 21, and 25 quails per cage (experiment I). Each treatment was per-formed in 5 replicates using a completely randomized design. In experiment II, 600 male growing-meat quails were assigned to 6 treatments (5 replicates) with 2 stocking densities (17 and 23 quails per cage) and 3 levels of CP (20, 22, and 24%) in a 2 x 3 factorial arrangement. In experiment I, the growing quails raised at 25 birds per cage had lighter body weight (BW) and body weight gain (BWG) than those at 13 and 17 quails per cage (P<0.05). Linear reductions in BW (P=0.008), feed intake (P=0.033), and BWG (P=0.012) as increasing stocking density were detected. In experiment II, CP levels and stocking density had no effect on growth performance, nutrient retention, blood profiles, and relative carcass weight (P>0.05). However, a 20% CP level significantly increased CP digestibility and decreased uric acid concentration compared to 24% CP (P<0.05). Furthermore, increased relative breast weight was detected in the quails raised under a high stocking density (P<0.05). The growing-meat quails have enhanced growth performance at the density of 32.10 to 51.85 birds/m<sup>2</sup>. With a 20% CP diet, increased growth performance and CP digestibility were observed.