Experimental Observations Using Degossypolized Cottonseed Protein (DGCSP) to Replace Soybean Meal in Compound Animal Feed

1.  Report On Degossypolized Cottonseed Protein (DGCSP) Feeding Experiment – Lactating Dairy Cows

Zhou Jianming et al,

China Agriculture University

Sanyuan Green Lotus Dairy Center, Beijing

Abstracts From The Results

During the period of nearly 1 year, feeding experiments on about 400 lactating dairy cows and experiments on large herd of cows for feeding cost and milk production have been run in areas like Beijing, Tianjin, Ningxia and Xinjiang. The experiments show that by substitution of 50% ~75% soybean meal in concentrated feed formula (i.e. 10-15% portion of soybean meal) with DGCSP for feeding lactating dairy cows, each cow yields 13.83% (2.88kg) more milk on average during the experimental period of time. Remarkable economic benefit has been realized without producing adverse effects on the healthy reproduction of the experimental dairy cows.

2.  Report On Degossypolized Cottonseed Protein (DGCSP) Feeding Experiment – Pacific White Shrimp

Zhou Jicun, et al

Lab of Nutrition and Feedstuff Research for Aquatic Animals,

Zhanjiang Ocean University

Abstracts From The Results

Baby shrimps of about 0.17g by weight are selected as experimental objects. DGCSP replaces fish powder protein by 0%, 20%, 35% and 50% respectively (the feedstuff for control group contains 36% fish powder protein). After feeding the shrimps for 8 weeks, the growth and body composition of the shrimps are determined and analyzed. The results show that when DGCSP substitutes fish powder protein by 20%, there is no apparent difference in the weight gain rate, specific growth rate, feed coefficient and protein efficiency ratio as compared with the control group.

3.  Report On Degossypolized Cottonseed Protein (DGCSP) Feeding Experiment – Perch

Xue Ming, Luo Lin, et al.

Aquatic Product Lab, Animal Feed Research Institute, China Agriculture Academy

Abstracts From The Results

Japanese Sea Perches (Lateolabrax japonicus) weighing 5.04±0.02g are selected as the experimental object and the feedstuff is added with 0%, 15.2%, 30.5% and 46% DGCSP respectively to replace 0%, 25%, 50% and 75% of fish powder protein. Besides, in 75% fish powder-replacement Group (A), lysine and methionine are balanced in reference with the control group. The results after the experiment on growth for 8 weeks show that there are no apparent differences in various items of growth parameters for the experimental group (25% fish powder protein replaced) as compared with the control group and there no apparent difference in specific growth rate and nutrients apparent digestion rate for the 50% fish powder protein replaced group as compared with the control group whereas its feed conversion rate and protein efficiency are substantially lower than the control group(P<0.05). When 75% fish powder protein is replaced, various growth index are apparently worse as compared with the control group. However, when the amino acids are balanced, the protein efficiency is substantially improved in the same group. No substantial difference is shown in the results of analysis on apparent digestion rate of various nutrients and on body composition of the fish among different experimental groups. It means that in the feed for Japanese Sea Perch, DGCSP could replace as much as less than 50% of fish powder protein (Note: the  basic formula contains 45% fish powder protein) which is beneficial to the substantial cost cut-down.

4.  Report On Degossypolized Cottonseed Protein (DGCSP) Feeding Experiment – Pacific White Red Trout

Xue Ming, Luo Lin, et al;

Aquatic Product Lab, Animal Feed Research Institute, China Agriculture Academy

Abstracts From The Results

Red Trouts weighing 39.18±0.07g are selected as the experimental object and the feedstuff is added with 0%, 15.2%, 30.5% ,46.5% & 61% DGCSP respectively to replace 0%, 25%, 50%, 75% & 100% of fish powder protein. Besides, in 75% fish powder-replacement Group (A), amino acids (lysine and methionine) are balanced in reference with the control group. The results after the experiment on growth for 8 weeks show that there are no apparent differences in various growth index, nutrient digestion rate, amino acid digestion rate and fish body composition index for the experimental groups (25% and 50% replacement of fish powder protein) as compared with the control group (0% replacement) and there are no apparent differences in dry matter digestion rate, protein digestion rate and energy digestion rate for the group --75% replacement (A) as compared with the control group. There are no apparent differences in fish body composition (dry matter, crude protein, crude fat, ashes and the like) in the feedstuffs among difference groups.

 

 The research shows that addition of certain quantity of DGCSP in the feed for red trouts will not have apparent influence on the growth, feedstuff apparent digestion rate & body composition of red trouts. With general consideration of various parameters, it is optimal for replacing 25-50% crude protein of fish powder (basic formula contains 45% fish powder).  At this level of replacing quantity, there are no significant difference in the ingestion and growth of red trouts as compared with the control group (0% replacement) while the feed cost per kilo is substantially reduced. By contrast, it was reported  by Cheng & Hardy in 2002 that when the cotton meal from high temperature oil pressing process is added  to 15% in the feedstuff for baby red trouts, the weight gaining rate and feedstuff conversion efficiency were substantially reduced.

5.  Report On Degossypolized Cottonseed Protein (DGCSP) Feeding Experiment – Laying Hens & Broilers

Laying Hens & Broilers

Zhu Wentao, et al

Technical Development Co.of  Xinjiang Tiankang Group Co. Ltd.

Broilers

Wang Yin, et al

Beijing Agriculture College

Beijing Huadu Broilers Co. Ltd.

Abstracts From The Results

417 New Roman broilers of 38 weeks 'age are selected for the experiment which are divided by random into four groups: control group (fed only with soybean meal), experimental group I (DGCSP replacing soybean meal by 100%), experimental group II (DGCSP replacing soybean meal by 70%) & experimental group III (DGCSP replacing soybean meal by 30%) for feeding experiments. The experimental results show that there are no apparent difference in laying rate and in weight of egg while feedstuff consumption trends toward decreasing. It is possible to completely replace soybean meal by DGCSP and the deduction of feed consumption is beneficial to profit increasing.

 

One day old chicks are selected for the experiment and are divided into the control group (fed only with soybean meal), experimental group 1 (5% DGCSP) & experimental group II (10% DGCSP).The feeding experiment is conducted for 3 weeks. The experimental results show that the adding of DGCSP does not have adverse influence on weight gaining of chicks nor on palatability and utilization rate of the feedstuff. DGCSP is a protein source ideally suited to feedstuff for chicks.

 

There are 26800 broilers in both control group and in experimental group. The nutritive levels of both control group and experimental group are completely consistent at different stages & the amino acids are adjusted for balance. The chicks for both control group & experimental group are bought together and the conditions are also completely consistent in immunification, feeding & medication. The chicks are fed till they are ready for sale. The experimental results show that when the broilers ration contains 10-12% DGCSP, there is no adverse influence on production performance of broilers as compared with the ration of only soybean meal. In addition, the feedstuff cost could be reduced to some extent.