Studies on nutritive values of rubber [Hevea spp.] seed meal in broilers and Japanese quails [Khon Kaen Univ., Khon Kaen, Thailand]
1985
Suratana Chuanrumluk
The objectives of these studies were to find the chemical composition (proximate analysis), hydrocyanic content, bulk density and protein quality of undecorticated para rubber seed meal (UPRSM) and to evaluate its subtitution level for corn and rice by-products (broken rice + rice bran) in japanese quail and broiler diets. There were large variation in crude protein contents (15.8-17-9%) and crude fiber contents (25.1-32.9%) of uprsm samples but the ether extract, ash calcium and phosphorus contents were similar. the hydrocyanic content ranged from 87-96 ppm. The bulk density of uprsm was comparable to those of sorghum and corn bur higher (P 0.05) than those of cassava chips and rice bran. the bulk density index of uprsm was 91 percent when broken rice was used as the reference. Protein quality of UPRSM was lower (P 0.01) Than that of sbm. The relative growth of japanese quails and the protein efficiency ratio (PER) indices of the group fed with the test diet (UPRSM) were 77.71 and 76.65 percent respectively. subtitution of corn and rice by-products by UPRSM at levels 0-40 percent in the diets indicated no significant effect of treatments on weight gain of japanese quails but there was a significant effect (P 0.05) on feed efficiency which decreased when the levels of UPRSM in the diets were increased. The group fed with diets in which rice by-products were replaced by UPRSM had better (P 0.05) feed efficiency than that of the groupfed with diets in which corn was replaced by UPRSM. There were no significant effects of treatments on productive performance (age of laying, first egg weight), carcass quality (dressing percentage) and liver (weight, fat and protein contents)
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