CN103564203A - Feed additive, preparation method of additive and application of additive - Google Patents

Feed additive, preparation method of additive and application of additive Download PDF

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Publication number
CN103564203A
CN103564203A CN201210279972.XA CN201210279972A CN103564203A CN 103564203 A CN103564203 A CN 103564203A CN 201210279972 A CN201210279972 A CN 201210279972A CN 103564203 A CN103564203 A CN 103564203A
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lipase
feed addictive
processed group
feed
skin
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CN103564203B (en
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罗涛
聂新华
王剑英
张清辉
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Anhui Leveking Biotechnology Co ltd
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LUWEIKANG BIO-ENGINEERING Co Ltd SHENZHEN CITY
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Abstract

The invention discloses a feed additive, a preparation method of the additive and an application of the additive. The feed additive comprises a lipase and a coloring agent; the feed additive can be obtained by uniformly mixing the lipase with the coloring agent. The feed additive disclosed by the invention is beneficial for coloring chicken feet tibias, chest and abdomen skins and back skins and has a high coloring function on the chicken feet tibias; the lipase in the feed additive can prompt the digestion and the adsorption of xanthophyll in the coloring agent to improve the deposition efficiency of the xanthophyll at the chicken feet tibias, the chest and abdomen skins and the back skins and improve the coloring effect, and therefore, the addition amount of the coloring agent is reduced, the cost is reduced; furthermore, due to the adoption of the feed additive, the feed conversion ratio can be improved and the feeding cost is reduced.

Description

Feed addictive and its preparation method and application
Technical field
The present invention relates to feed additive field, particularly relate to a kind of feed addictive that comprises lipase and colouring agent and preparation method thereof, and the application of described feed addictive in three yellow chicken pigmenting of skin.
Background technology
Lutein is a kind of of carotenoid, can alcohol, the form of aldehyde, ketone, acid exists.Lutein is water insoluble, dissolves in grease and the fatty solvents such as methyl alcohol, ethanol and benzinum.Lutein is all very high natural function pigments of a kind of nutrition and practical value.The U.S. just extracts lutein since 20 century 70s from marigold, is to be added in chicken feed the earliest, can improve the nutritive value of egg.Lutein can also be applied in the industries such as cosmetics, feed, medicine, aquatic products.On international market, 1 gram of lutein of purifying is suitable with the price of 1 gram of gold.Lutein is the main extract in marigold, and it is widely used in feed addictive and food additives field.Lutein is mainly promote fowl poultry skin painted for feed addictive.
Three yellow chickens, claim again yellow-feather broiler, are that Guangdong and Guangxi Provinces, Hong Kong and the personage of Macao like best edible chicken breed.Three yellow chickens are attractive to be liked except chicken taste is strong, meat is soft, delicious flavour, nutritious, the foresythia of its pin shin and skin yellow orange orange is the attractive main sense organ of liking, and the pin shin and the skin color that therefore improve three yellow chickens are important steps in three yellow fowl raising processes.1915, Palmer has illustrated the source (Palmer of uranidin in yolk, adipose tissue and the blood that the lutein in feed is chicken first, L.S..Xanthophyll, the principal natural yellow pigment of the egg yolk, body fat and blood serum of the hen.The physiological relationship of the pigments to the xanthophyll of plants.Journal of Biological Chemistry, 1915,23:261-279).Further research shows that the color of broiler chicken skin is also that lutein deposition in feed produces, and lutein can not automatically generate in poultry body, but derive from feed (Heiman, V., and L.W.Tighe.Observations on the shank pigmentation of chicks.Poultry Science, 1943,22:102-107; Fritz, J.C., F.D.Wharton, Jr.and L.J.Classen.Influence of feed on broiler pigmentation.Feedstuffs.1957,29:18).Increase along with diet Lutein content, the cuticular color Roche of the pin shin colourity of chicken is higher, and by difference not significantly to significant difference, (Zhou Liangjuan, counts into, Li Yuxin finally to reach the utmost point level of signifiance, the research of several natural carotenols to Sanhuang broiler coloring effect, feed research, 2003,24 (4): 36-40).But the high feed-grain maker of making of lutein fancy price or raiser can not add the lutein of purifying in feed, therefore, feed-grain maker or raiser add the higher composition of some lutein contents conventionally in feed, as added colouring agent, to improve the pigmenting of skin effect of three yellow chickens.By extending breeding cycle or adding a large amount of colouring agents and improve the deposition of lutein in letting animals feed skin and obviously can greatly raise the cost to reach good pigmenting of skin effect, therefore, improving deposition efficiency, the raising pigmenting of skin effect of lutein in three yellow cock skin skins is to be only effective solution.
In recent years, lipase has made great progress aspect commercial Application.That alkaline lipase has is high to substrate hydrolysis efficiency, reaction temperature and, nontoxic, the advantage such as hydrolyzed fat under certain condition, in fields such as washing agent, papermaking, process hides, food, weaving and light industry, be widely used, and become important kind on enzyme preparation market, the whole world.
Add Exogenous Lipase and can supplement the deficiency that chicken high strength is fattened endogenous lipase in situation, thereby improve the utilization ratio of high energy feed.Plentiful and the local flavor of chicken trunk in order to deliver for sale, general fattening chicken diet is significantly increased than the diet fat consumption of non-fattening chicken, the lipase of now poultry secretion can not meet the needs of the nutritional labelings such as fat in digestion high energy diet in theory, therefore must add Exogenous Lipase promotes digesting and assimilating of nutriment, and particularly fat digests and assimilates.
Research shows, adds the feed consumption weightening finish of the chicken of lipase group and compares all lower than control group (P > 0.05), adds varying level lipase in yellow-feather broiler daily ration, and 1~21 age in days production performance difference is not remarkable; 22~42 age in days yellow-feather broilers in the average inapparent situation of daily ingestion amount difference, average daily gain, feed conversion rate (He Qian,Chen village that is significantly increased, Zhang Jie, the impact of lipase on yellow-feather broiler production performance and nutrient availability, Chinese feed, 2010,17-19).Lipase active in poultry pancreas and choleresis raise with the increase of age in days, go out after shell, in 8 week age, fatty digestion power is improved to (Yu Xuhua gradually, Wang Jing, Sun Zhe, Han Weitao, the law of development of yellow plumage meat chick lipase and the impact of wheat SNSP on its activity, Animal nutrition journal, 2001,13 (3): 60-64).In livestock and poultry diet, add lipase, be conducive to supplement the deficiency of the endogenous digestive ferment of special physiological stage animal, particularly in poult, cub daily ration, add ectogenous fat enzyme, can supplement because of digestive function not yet physically well developed, the deficiency of endogenous digestive ferment secretory volume; Can improve the apparent digestive energy 5%~11% of energy feed raw material, pig, fowl speed of weight increment 4%~10%, efficiency of feed utilization 2%~7%, reduces excrement discharge.
But the deposition about the lutein in lipase promotion colouring agent in three yellow cock skin skins, the research that improves three yellow cock skin skin coloring effects has no report.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of feed addictive and its preparation method and application, described feed addictive is conducive to chicken pin shin, skin of chest abdomen, skin of back painted, stronger to the pigmentation of chicken pin shin, lipase in feed addictive can promote digestion and the absorption of the lutein in colouring agent, improve lutein at chicken pin shin, skin of chest abdomen, the deposition efficiency of skin of back, improve coloring effect, thereby reduce the addition of colouring agent, reduce costs, and described feed addictive can be improved food conversion ratio, reduce feeding cost.
One aspect of the present invention relates to a kind of feed addictive, and described feed addictive comprises lipase and colouring agent.
Wherein, the mass ratio of described lipase and colouring agent is 1: 4~5.
Described feed addictive can also comprise microorganism, vitamin, amino acid, mineral element and complex compound thereof, enzyme preparation, nonprotein nitrogen, antioxidant, anticorrisive agent, flavor enhancement, spices, binding agent, anti-caking agent, stabilizing agent, polysaccharide and oligosaccharides, betaine, beet alkali hydrochlorate, allicin, D-sorbite, soybean lecithin, natural steroids Sa spills saponin, DHA (DHA), brewer's yeast culture, beer yeast extract, beer yeast cells wall, saccharicter-penin, the fragrant phenol of wild marjoram, acetohydroxamic acid, Mercaptamine, extractive of alfalfa, eucommia ulmoides extracts, Shorthorned Epimedium P.E, one or more in α-ring alanine.
Described colouring agent comprises artificial tanning agent and natural colorant.The carotenoid that described artificial tanning agent is chemical synthesis, described natural colorant comprises marigold flower pigment extract and pepper extract.
Preferably, described colouring agent is natural colorant.
Described lipase derives from animal, plant or microorganism.
One aspect of the present invention also relates to a kind of preparation method of feed addictive, and described method comprises and lipase mixed to the step that obtains described feed addictive with colouring agent.
Wherein, lipase is mixed and obtains described feed addictive with colouring agent 1: 4 in mass ratio~5.
In one embodiment of the invention, lipase mixes in mass ratio and obtains described feed addictive with colouring agent at 1: 4.
In another embodiment of the invention, lipase mixes in mass ratio and obtains described feed addictive with colouring agent at 1: 4.5.
In another embodiment of the invention, lipase mixes in mass ratio and obtains described feed addictive with colouring agent at 1: 5.
Preferably, described colouring agent is selected natural colorant.
Described lipase can be selected the lipase that derives from animal, plant or microorganism.
One aspect of the present invention also relates to the application of described feed addictive in three yellow chicken pigmenting of skin.
In one embodiment of the invention, after described feed addictive is mixed with diet for feeding three yellow chickens.In described diet, the concentration of lipase is 200ppm, and the concentration of colouring agent is 800ppm~1000ppm.
The invention has the beneficial effects as follows:
1, feed addictive of the present invention is conducive to the painted of chicken pin shin, skin of chest abdomen, skin of back, stronger to the pigmentation of chicken pin shin, lipase in feed addictive can promote digestion and the absorption of the lutein in colouring agent, improve lutein at the deposition efficiency of chicken pin shin, skin of chest abdomen, skin of back, improve coloring effect, thus reduce colouring agent addition, reduce costs.
2, feed addictive of the present invention can be improved food conversion ratio, thereby reduces feeding cost.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Feed addictive of the present invention comprises lipase and colouring agent.Colouring agent can be artificial tanning agent or natural colorant, preferably natural colorant.Described lipase can derive from animal, plant or microorganism.Described lipase can be bought from the market, for example, can buy from Shenzhen Leveking Biology Engineering Co.,Ltd; Described colouring agent is the colouring agent of selling on market.
Embodiment 1
Take respectively 200mg lipase (based on every kg basis diet), natural colorant 800mg (based on every kg basis diet), then lipase is mixed with colouring agent, obtain feed addictive of the present invention.
Embodiment 2
Take respectively 200mg lipase (based on every kg basis diet), natural colorant 900mg (based on every kg basis diet), then lipase is mixed with colouring agent, obtain feed addictive of the present invention.
Embodiment 3
Take respectively 200mg lipase (based on every kg basis diet), natural colorant 1000mg (based on every kg basis diet), then lipase is mixed with colouring agent, obtain feed addictive of the present invention.
Embodiment 4: the application of feed addictive of the present invention in three yellow chicken pigmenting of skin.
1. test and method
1.1 experimental design
Processed group 1: basic diet (lutein concentration is 20.9ppm).
Processed group 2: lipase+basic diet (lipase concentration is 200ppm, and lutein concentration is 20.8ppm).
Processed group 3: colouring agent+basic diet (colorant concentration is 1100ppm, and lutein concentration is 42.8ppm).
Processed group 4: the feed addictive of basic diet+embodiment 1 (lutein concentration is 36.8ppm).
Processed group 5: the feed addictive of basic diet+embodiment 2 (lutein concentration is 38.9ppm).
Processed group 6: the feed addictive of basic diet+embodiment 3 (lutein concentration is 41ppm).
The basic diet of each group is consistent above, for rich phoenix is fattened chicken feed; Lutein content is measured by Guangxi Institute of Analysis.
1.2 experimental animals: select approximately 90 day age, 72 of the rich phoenix colour of loess of the consistent health of body weight chickens, are divided into 6 groups at random, and 4 every group are repeated cages, 3 chickens of every cage.Each group is 6 kinds of processing feeds of the corresponding above-mentioned design of feeding respectively.
1.3 feedings and managements: test chicken adopts three layers of staged to raise in cages.The daily management of test chicken is undertaken by the Routine Management of breeding enterprise.Chicken free choice feeding dry mash, nipple-shaped drinker is freely drunk water.Test period 4 weeks.
1.4 testing index
1.4.1 production performance index: average weight gain, average daily ingestion amount, feed consumption weightening finish are compared etc.;
1.4.2 Slaughter index
1.4.2.1 dressing percentage: dressing percentage (%)=(carcass weight/live-weight) * 100%
1.4.2.2 half clean thorax rate: half clean thorax rate (%)=(half clean thorax weight/live-weight) * 100%
1.4.2.3 complete clean thorax rate: complete clean thorax rate (%)=(complete clean thorax weight/live-weight) * 100%
1.4.2.4 chest muscle rate: chest muscle rate (%)=(heavy/complete clean thorax weight of chest muscle) * 100%
1.4.2.5 leg flesh rate: leg flesh rate (%)=(heavy/complete clean thorax weight of leg flesh) * 100%
1.4.2.6 abdomen fat rate: abdomen fat rate (%)=(heavy/complete clean thorax weight of abdomen fat) * 100%
1.4.3 the colour of skin and meat index:
1.4.3.1 pin shin color: measure unit (degree) with Roche colorimetric fan.
1.4.3.2 chest/skin of back color: consult and use the yellowish pink analyzer of German Opto-Star and measure.
1.4.3.3pH: with accurate pH test paper, measure.
1.4.3.4 be waterpower: with German LF-STAR, be that waterpower electric conductivity measuring instrument is measured, unit is ms, and value is the bigger the better.
1.4.3.5 tender degree: represent by shearing force: the C-LM3 type digital display muscle tenderness instrument of producing with Northeast Agricultural University is measured, and unit is N (newton), is worth more bad more greatly.
1.5 data processing
Result of the test data acquisition carries out variance analysis by the ANOVA process of SPSS20.0 software, by DuncanShi method, makes multiple ratio, and data represent by average ± standard deviation.P > 0.05 difference is not remarkable; P < 0.05 significant difference; P < 0.01 difference is extremely remarkable.
2. test results and analysis
2.1 impacts of feed addictive of the present invention on three yellow chicken production performances
Table 2-1 has listed the affect situation of 6 kinds of different disposal on three yellow chicken production performances, comprises the situation that affects on three yellow chicken average weight gains, average daily gain, average daily feed intake and feed consumption weightening finish ratio.
The affect unit of table 2-1 feed addictive of the present invention on three yellow chicken production performances: gram
Processed group Average weight gain Average daily gain Average daily feed intake Feed consumption weightening finish is than * *
1 326.5±25.47 11.7±0.95 85.5±6.34 6.11±0.330
2 327.8±34.94 11.7±1.24 82.4±9.17 5.90±0.441
3 324.3±28.00 11.6±1.01 82.9±6.24 6.11±0.254
4 340.5±24.10 12.1±0.84 87.7±3.56 6.00±0.269
5 322.0±34.19 11.5±1.22 81.9±9.11 5.89±0.203
6 324.5±52.80 11.6±1.91 82.2±10.35 5.92±0.251
*: owing to laying eggs later stage part chicken, therefore the feed for increasing weight has been carried out revising (unified by egg size * 2.5 deductions)
From table 2-1, average weight gain, average daily gain of each group between 322.0 grams~340.5 grams and 11.5 grams~12.1 grams, change and there is no regularity respectively, and each group difference not significantly (P > 0.05); Each organizes average daily feed intake between 81.9 grams~87.7 grams, and each group difference is remarkable (P > 0.05) not, changes and there is no regularity; Each organizes feed consumption weightening finish than 5.89: 1~6.11: 1, each group difference is remarkable (P > 0.05) not, there is no regularity, but the feed consumption of processed group 1, processed group 3 weightening finish is than being relatively higher than other each groups, the feed conversion rate that does not add lipase is slightly poor.
From analyzing above, feed addictive of the present invention does not significantly affect average weight gain, average daily gain, average daily feed intake, the feed consumption weightening finish ratio of chicken, and feed addictive of the present invention does not affect the production performance of chicken.Although the weightening finish of the feed consumption of each processed group is more not remarkable than difference, but the feed consumption weightening finish ratio that does not add the processed group of lipase all on average exceeds 0.2 left and right than each group of having added lipase, in production practices, the feed consumption weightening finish of reduction by 0.2 is than needing very high formulation cost, illustrate that feed addictive of the present invention can improve food conversion ratio, reduce feeding cost.
2.2 impacts of feed addictive of the present invention on three yellow chicken Slaughters
Table 2-2 has listed the affect situation of 6 kinds of different disposal on three yellow chicken Slaughters, comprises the situation that affects on chicken dressing percentage, half clean thorax rate, complete clean thorax rate, chest muscle rate, leg flesh rate and abdomen fat rate.
Table 2-2 feed addictive of the present invention affects unit: % to three yellow chicken Slaughters
Processed group Dressing percentage Half clean thorax rate Complete clean thorax rate Chest muscle rate Leg probability Abdomen fat rate
1 91.4±0.88 79.1±1.84 64.9±2.48 17.6±1.01 20.8±0.77 6.50±2.623
2 91.4±0.87 78.8±0.99 65.7±1.47 18.2±1.06 20.3±0.79 8.32±2.352
3 91.7±0.28 78.0±1.08 63.8±0.87 17.4±1.12 20.8±0.34 6.53±0.404
4 91.1±0.57 79.0±0.75 65.9±1.06 17.9±0.97 21.3±0.67 6.43±3.101
5 92.2±0.94 78.7±0.47 64.4±0.95 17.6±0.60 20.2±0.22 7.48±0.499
6 91.8±1.82 78.3±2.37 64.3±2.39 17.5±0.73 20.3±1.13 7.15±1.905
From table 2-2, the dressing percentage of each group, half clean thorax rate, complete clean thorax rate are respectively between 91.1%~92.2%, 78.0%~79.1% and 63.8%~65.9%, the variation of each index does not have regularity, and each group difference not significantly (P > 0.05); The chest muscle rate of each group and leg flesh rate are respectively between 17.4%~18.2% and 20.2%~21.3%, and each group difference is aobvious (P > 0.05) not, also there is no regularity; Between the abdomen fat rate 6.50%~8.32% of each processed group, each group difference is aobvious (P > 0.05) not, changes and also there is no regularity.
From analyzing above, feed addictive of the present invention does not significantly affect three yellow chicken dressing percentages, half clean thorax rate, complete clean thorax rate, chest muscle rate, leg flesh rate and abdomen fat rate, and feed addictive of the present invention does not affect the Slaughter of three yellow chickens.
2.3 impacts of feed addictive of the present invention on the three yellow chicken colours of skin
Table 2-3 has listed 6 kinds of different disposal to chicken pin shin, chest belly, the painted situation that affects of skin of back.
Table 2-3 feed addictive of the present invention is on three yellow chicken pin shins, chest belly, the painted impact of skin of back
Processed group Pin shin color (degree) Skin of back color Skin of chest abdomen color
1 3.00±0.612 aA 24.3±5.85 a 25.6±2.28 a
2 3.30±0.548 aA 25.6±4.35 ab 26.9±4.82 a
3 5.00±0.577 dB 28.6±3.74 b 34.3±4.82 b
4 4.86±0.408 dB 28.0±1.45 b 33.9±5.97 b
5 4.88±0.750 dB 28.3±2.12 b 34.1±2.76 b
6 5.00±0.707 dB 28.6±2.26 b 34.3±3.95 b
Notes: same column shoulder mark lowercase is different, represents significant difference (p < 0.05), identical table differential different not remarkable (p > 0.05); Shoulder mark capitalization is different, represents difference extremely significantly (p < 0.01).
From table 2-3, chicken pin shin is painted best with processed group 3, processed group 6, reaches colourity 5 degree, and processed group 1 is the poorest, only has 3 degree; Processed group 3, processed group 4, processed group 5, processed group 6 are compared with processed group 1, processed group 2, and difference is (p < 0.01) extremely significantly; Other respectively organize difference not significantly (P > 0.05); Processed group 2 has improved 0.3 colourity than processed group 1, but difference not significantly (P > 0.05).
From table 2-3, each organizes chicken skin of back color between 24.3~28.6, processed group 1 is compared with processed group 3, processed group 4, processed group 5, processed group 6, significant difference (P < 0.05), other respectively organize difference not significantly (P > 0.05); But also visible processed group 2 has improved 5.3% than processed group 1.
From table 2-3, each organizes pigeon breast skin of abdomen color between 25.6~34.3, processed group 3, processed group 4, processed group 5, processed group 6 are compared with processed group 1, processed group 2, significant difference (P < 0.05), other respectively organize difference not remarkable (P > 0.05); But also visible processed group 2 has improved 5.1% than processed group 1.
The pin shin color colourity of processed group 2 is than high 0.3 colourity of processed group 1, and processed group 1 is compared with processed group 2, the not fatty enzyme of processed group 1; Meanwhile, processed group 3 with process 6 groups and compare, the not fatty enzyme of processed group 3, and the lutein content of processed group 3 is higher than processed group 6, but processed group 3 is identical with the pin shin color colourity of processed group 6; This explanation lipase can promote lutein in the deposition of pin shin, improves the coloring effect of pin shin.
The skin of back color of processed group 2 is higher by 1.3 than processed group 1, and processed group 1 is compared with processed group 2, the not fatty enzyme of processed group 1; Meanwhile, processed group 3 is compared with processed group 6, the not fatty enzyme of processed group 3, and the lutein content of processed group 3 is higher than processed group 6, but processed group 3 is identical with the skin of back color of processed group 6; This explanation lipase can promote lutein in the deposition of skin of back, improves the coloring effect of skin of back.In addition, promote skin of back coloring effect not promote pin shin painted so remarkable, preferably also only reach the level of signifiance.This be due to lutein in vivo deposition and the metabolism of various tissues be not identical, having there is esterification in the lutein that is deposited on pin shin, fade, and esterification does not occur the lutein of skin of back so be not easy to occur oxidation.
The skin of chest abdomen color of processed group 2 is higher by 1.3 than processed group 1, and processed group 1 is compared with processed group 2, the not fatty enzyme of processed group 1; Meanwhile, processed group 3 with process 6 groups and compare, the not fatty enzyme of processed group 3, and the lutein content of processed group 3 is higher than processed group 6, but processed group 3 is identical with the skin of chest abdomen color of processed group 6.This explanation lipase can promote lutein in the deposition of skin of chest abdomen, improves the coloring effect of skin of chest abdomen.
The pin shin color of processed group 4, processed group 5, processed group 6, skin of back color, skin of chest abdomen color are compared without significant difference with processed group 3, hence one can see that, in feed addictive during fatty enzyme, because lipase can promote lutein in colouring agent at the deposition efficiency of chicken pin shin, skin of chest abdomen, skin of back, even if therefore reduce the addition of colouring agent, also substantially can reach same coloring effect.
From analyzing above, feed addictive of the present invention is conducive to the painted of chicken pin shin, skin of chest abdomen, skin of back, stronger to the pigmentation of chicken pin shin, lipase in feed addictive can promote digestion and the absorption of the lutein in colouring agent, improve lutein at the deposition efficiency of chicken pin shin, skin of chest abdomen, skin of back, improve coloring effect, thus reduce colouring agent addition, reduce costs.
2.4 impacts of feed addictive of the present invention on meat.
Table 2-4 has listed the affect situation of 6 kinds of different disposal on chicken meat, comprises on thoracic muscle being that waterpower, leg flesh are the situation that affects of waterpower, chest muscle shearing force, leg flesh shearing force, chest muscle pH and leg flesh PH.
The impact of table 2-4 feed addictive of the present invention on meat
Figure BDA00001985648300111
From table 2-4, the chest muscle of each processed group be waterpower, leg flesh be waterpower respectively between 2.93ms~3.17ms and 1.94ms~2.12ms, between each group, change irregularities, and difference not significantly (P > 0.05); The chest muscle shearing force of each processed group, leg flesh shearing force are respectively between 30.1N~34.8N and 48.6N~53.1N, and each group difference is aobvious (P > 0.05) not, irregularities; Each processed group chest muscle pH and leg flesh pH are respectively between 5.90~6.38 and 5.63~5.90, and each group difference is aobvious (P > 0.05) not, and change irregularities.
From analyzing above, it is waterpower, shearing force and pH that feed addictive of the present invention does not affect chicken muscle.But from result of the test, can know thoracic muscle muscle what be that waterpower is better than leg flesh muscle is waterpower.The shearing force of chest muscle muscle is less than the shearing force of leg flesh muscle, illustrates that chest muscle muscle is tenderer than leg flesh muscle, and quality is better.Chest muscle muscle and the equal slant acidity of leg flesh muscle, but chest muscle muscle pH is higher than leg flesh muscle pH, and more partial neutral of chest muscle muscle is described.
In sum, feed addictive of the present invention is conducive to the painted of chicken pin shin, skin of chest abdomen, skin of back, stronger to the pigmentation of chicken pin shin, lipase in feed addictive can promote digestion and the absorption of the lutein in colouring agent, improve lutein at the deposition efficiency of chicken pin shin, skin of chest abdomen, skin of back, improve coloring effect, thus reduce colouring agent addition, reduce costs, and feeding cost can be improved food conversion ratio, be reduced to feed addictive of the present invention.In addition, feed addictive of the present invention does not affect production performance, Slaughter and the meat of chicken.
Those skilled in the art do not depart from essence of the present invention and spirit, can have various deformation scheme to realize the present invention, the foregoing is only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention.In addition, should be appreciated that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.

Claims (10)

1. a feed addictive, is characterized in that, described feed addictive comprises lipase and colouring agent.
2. feed addictive as claimed in claim 1, is characterized in that, the mass ratio of described lipase and colouring agent is 1: 4~5.
3. feed addictive as claimed in claim 1 or 2, is characterized in that, described colouring agent is natural colorant.
4. feed addictive as claimed in claim 1 or 2, is characterized in that, described lipase derives from animal, plant or microorganism.
5. the preparation method of feed addictive claimed in claim 1, is characterized in that, lipase is mixed with colouring agent and obtains described feed addictive.
6. the preparation method of feed addictive as claimed in claim 5, is characterized in that, lipase is mixed and obtains described feed addictive with colouring agent 1: 4 in mass ratio~5.
7. the preparation method of the feed addictive as described in claim 5 or 6, is characterized in that, described colouring agent is selected natural colorant.
8. the preparation method of the feed addictive as described in claim 5 or 6, is characterized in that, described lipase derives from animal, plant or microorganism.
9. the application of the feed addictive described in claim 1~8 any one in three yellow chicken pigmenting of skin.
10. application as claimed in claim 9, is characterized in that, after described feed addictive is mixed with diet for feeding three yellow chickens.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104705495A (en) * 2015-03-31 2015-06-17 江西中成人药业有限公司 Special traditional Chinese medicine polysaccharide feed additive for pets
CN105475636A (en) * 2015-11-25 2016-04-13 李德昌 Water-soluble garlicin mixture, and preparation method and use thereof
CN108783071A (en) * 2018-06-26 2018-11-13 安徽鲜森绿色食品有限公司 A kind of chicken feed addictive and its preparation process improving meat

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Publication number Priority date Publication date Assignee Title
CN104705495A (en) * 2015-03-31 2015-06-17 江西中成人药业有限公司 Special traditional Chinese medicine polysaccharide feed additive for pets
CN105475636A (en) * 2015-11-25 2016-04-13 李德昌 Water-soluble garlicin mixture, and preparation method and use thereof
CN108783071A (en) * 2018-06-26 2018-11-13 安徽鲜森绿色食品有限公司 A kind of chicken feed addictive and its preparation process improving meat

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