1359
The effects of fermented cotton seed meal on growth performance and egg quality in laying hens

Wednesday, July 23, 2014
Exhibit Hall AB (Kansas City Convention Center)
Yongwei Wang , Academy of State Administration of Grain, Beijing, China
Aike Li , Academy of State Administration of Grain, Beijing, China
Yijiang Hou , Academy of State Administration of Grain, Beijing, China
Yi Li , Animal Diseases Control and Prevention Centre of Miyun City, Beijing, China
Xiaolin Zhang , Academy of State Administration of Grain, Beijing, China
Han Wei , Academy of State Administration of Grain, Beijing, China
Abstract Text:

Cottonseed meal (CSM) is very rich in China, but its nutrient bioavailability is low. Microbial solid-state fermentation is an effective way to improve the nutrient bioavailability of CSM. Therefore, deeply evaluating the nutritional value of fermented cottonseed meal (FCSM) in poultry, pig and ruminants can provide important data support for its reasonable application in animal feed and alleviate the shortage of high quality protein feedstuff. The objective of this study was to evaluate the effects of FCSM on growth performance and egg quality in laying-hens. A total of 660 forty-seven week-old laying-hens were randomly divided into two groups with 110 birds/replicate. A corn-soybean meal (SBM) based control diet was formulated and the experimental diets included FCSM to replace 15% SBM on a kg basis. The trial period was two month. Laying rate, feed to egg ratio, and egg quality were measured. The statistical analysis was performed with SPSS 18.0 software for Windows. Independent sample T-test was used and a probability level of P≤0.05 was considered statistically significant. The results indicated that, compared to non-fermented CSM, free gossypol (FG) content of FCSM declined from 706 mg/kg to 257mg/kg, apparent metabolism energy (AME) increased from 8.93 MJ/kg to 9.37 MJ/kg. The number of saccharomyces cerevisiae and bacillus subtilis in FCSM was 1.86×108 and 3.1×108, besides, the content of small peptides (molecular weight < 600 Da) in FCSM was higher than CSM. No difference was found between treatments regarding the laying rate (P=0.383), feed to egg ratio (P=0.318). Compared to control diet, the FCSM had no adverse effects on yolk relative weight (P=0.201), Haugh unit (P=0.499), yolk colour (P=0.817), egg shell strength (P=0.923). In conclusion, FCSM can be used in laying-hen diets at up to 15% of the total diet as a promising alternative protein source.

Keywords:

laying hen; fermented cotton seed meal; growth performance

See more of: Evaluation of Feed Ingredients For Monogastric Diets
See more of: Nonruminant Nutrition
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