[논문]Utilization of Reconstituted High-tannin Sorghum in the Diets of Broiler Chickens

Kumar, Vinod; Elangovan, A.V.; Mandal, A.B.

doi:10.5713/ajas.2005.538

Utilization of Reconstituted High-tannin Sorghum in the Diets of Broiler Chickens 원문보기

Asian-Australasian journal of animal sciences, v.18 no.4, 2005년, pp.538 - 544

Kumar, Vinod (Part of M.V.Sc. thesis, Deemed University, IVRI) , Elangovan, A.V. (Avian Nutrition and Feed Technology Division, Central Avian Research Institute) , Mandal, A.B. (Avian Nutrition and Feed Technology Division, Central Avian Research Institute)

Abstract ▼ AI-Helper

The present experiment was conducted to assess the effect of reconstitution (R) on utilization of red sorghum (S) in diets of broiler chickens. Day-old broiler chicks (n=360) were randomly divided into 36 groups of 10 chicks each, and 9 dietary treatments were allotted to 4 groups (replicates) in a completely randomized design. Out of the 9 treatments, one was corn-soy based control (D1). The rest of the treatments were diets consisting of four levels (25, 50, 75 and 100% part of corn) of raw red sorghum (S25-S100) or four levels of reconstituted red sorghum (RS25-RS100). The tannin content reduced from 2.3% to 1.6% after reconstitution of red sorghum. Body weight gain reduced significantly (p<0.01) in diets containing unprocessed red sorghum beyond 33% in diet or reconstituted red sorghum at any level. However, during finishing growth phase the birds receiving either processed or unprocessed sorghum (barring S75) had statistically similar gains in body weight. During over all growth phase (0-6 wk), live weight gains in all the dietary treatments did not differ statistically. Feed intake during 0-6 wk was significantly higher (p<0.05) in diets containing sole red sorghum than corn-soy based control diets Feed conversion ratio during 0-3 wk period in control and unprocessed red-sorghum diets were similar but statistically poorer (p<0.01) FCR emanated from reconstituted groups, while during 3-6 wk of age FCR was poorer (p0.05) due to the various levels of red-sorghum. It was concluded that though the tannin content was reduced by 30% by the reconstitution process, but this did not give any additional advantage in broiler performance. More over, red-sorghum can be used effectively up to 33% in diet replacing 50% of corn after proper adjustment of proteins, energy and amino acids.

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제안 방법

Three hundred and sixty (360) healthy unsexed, day old multi-coloured broiler chicks were selected, wing banded, weighed and randomly distributed into 36 groups of 10 each depending on their body weight after discarding the heavier and lighter ones. The experiment was conducted following completely randomized design having 9 dietary treatments with 4 replicates in each.
However, reconstituted grains being moist, may favour mould growth when added in mixed feed. The purpose of this study was, therefore, to investigate the possibility of replacing corn partially or completely in diets of broiler chickens, by red sorghum (high in tannin) as such, or reconstituted after sun-drying.
Nine dietary treatments were formulated; one was corn soy-based control diet (D1). The rest of the treatments were diets consisting of four levels (25, 50, 75 and 100% replacement of corn) of raw red sorghum (S25-S100) and four levels (25, 50, 75 and 100% of corn) of reconstituted red sorghum (RS25-RS100). Diets were made isocaloric (2,800 ME kcal/kg) and with similar lysine (1.

대상 데이터

The rest of the treatments were diets consisting of four levels (25, 50, 75 and 100% replacement of corn) of raw red sorghum (S25-S100) and four levels (25, 50, 75 and 100% of corn) of reconstituted red sorghum (RS25-RS100). Diets were made isocaloric (2,800 ME kcal/kg) and with similar lysine (1.14%) and methionine (0.45%) levels in the starter phase and with 2,800 ME kcal/kg, lysine (1.0%) and methionine (0.4%) in the finisher phase (Table 1). The ME and CP levels were according to breed type as envisaged in our earlier study (Pramod et al.
The rest of the treatments were diets consisting of four levels (25, 50, 75 and 100% replacement of corn) of raw red sorghum (S25-S100) and four levels (25, 50, 75 and 100% of corn) of reconstituted red sorghum (RS25-RS100). Diets were made isocaloric (2,800 ME kcal/kg) and with similar lysine (1.14%) and methionine (0.45%) levels in the starter phase and with 2,800 ME kcal/kg, lysine (1.0%) and methionine (0.4%) in the finisher phase (Table 1). The ME and CP levels were according to breed type as envisaged in our earlier study (Pramod et al.
Three hundred and sixty (360) healthy unsexed, day old multi-coloured broiler chicks were selected, wing banded, weighed and randomly distributed into 36 groups of 10 each depending on their body weight after discarding the heavier and lighter ones. The experiment was conducted following completely randomized design having 9 dietary treatments with 4 replicates in each.

데이터처리

The means in the different treatment were tested for statistical significance using Duncan’s multiple range test (DMRT) as described by Duncan (1955).
Data were subjected to one-way analysis of variance in a completely randomized design as per methods of Snedecor and Cochran (1989). The means in the different treatment were tested for statistical significance using Duncan’s multiple range test (DMRT) as described by Duncan (1955).

성능/효과

All the reconstituted red sorghum based diets were statistically similar, but RS50 and RS75 were significantly (p<0.01) poorer than control diet.
05) to those fed on control diet. All the reconstituted red sorghum based diets were statistically similar, but RS50 and RS75 were significantly (p<0.01) poorer than control diet. During 3-6 week of age, a different trend was observed as most of the dietary groups had similar FCR, though S75 and RS75 had poorer (p<0.
The overall CP efficiency in all groups were comparable to control, however, birds fed red sorghum, as such at 75% replacement level of corn had significantly (p<0.01) poorer CP efficiency as compared to control (Table 3).
The overall CP efficiency in all groups were comparable to control, however, birds fed red sorghum, as such at 75% replacement level of corn had significantly (p<0.01) poorer CP efficiency as compared to control (Table 3). However, in birds fed on reconstituted red sorghum (RS25, RS50, RS75 and RS100), the overall CP efficiency became poorer with increasing inclusion of reconstituted red sorghum.

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