CN105146139A - Application of powdered milk substitute for raising weaning lambs of Qianbei ma goats - Google Patents
Application of powdered milk substitute for raising weaning lambs of Qianbei ma goats Download PDFInfo
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Abstract
The invention discloses the application of a powdered milk substitute for raising weaning lambs of Qianbei ma goats. The application is realized by supplementary feeding powdered milk substitute on the basis of a basic diet of the lambs of Qianbei ma goats, wherein the basic diet consists of whole-plant corn, distillers' grains and a grain feed mixture. The supplementary feeding quantity of the powdered milk substitute is 4%-6% of the weight of dry substances of the basic diet for the lambs of the Qianbei ma goats. The supplementary feeding of the diet is suitable for the horizontal powdered milk substitute, the average daily gain, and the nutrient digestibility of the weaning lambs of the Qianbei ma goats can be increased, the material-to-weight is reduced, and the feed conversion rate is increased; the antioxidation and the stress resistance of plasma can also be effectively improved, the utilization rate of protein is increased, and the immunity is improved.
Description
Technical field
The present invention relates to the breeding technology field of goat, be specifically related to the application of a kind of powered milk substitute in the numb sheep weaned lamb in north, Guizhou Province is raised.
Background technology
One of large excellent Local Goat Breeds in Bei Mayangshi Guizhou Province, Guizhou Province three.This kind goat is the product of producing region working people's long-term breeding and natural selection, to the natural ecological condition of locality, there is good adaptability, have that crude feed tolerance, premunition are strong, the delicacy of wide adaptability, delicious meat, hide quality better, the excellent feature of production performance.In May, 2009 examines in qualification process at the new genetic resources that the Ministry of Agriculture organizes, expert group of the Ministry of Agriculture gives very high praise to this kind goat, think " numb sheep truly has feature characteristic to north, Guizhou Province; have larger difference with Chengdu Ma goat ", thus be smoothly through expert group's situ appraisal, and be approved as new genetic resources December in the same year by the Committee of Experts of the Ministry of Agriculture.Guizhou Province north numb sheep main product in the Renhuai of North Guizhou, two places, Xishui County, the west and south, Chishui, the northwestward, Zun Yi, Tongzi south and Jinsha northeast also have distribution.Numb sheep belongs to undercoat type skin and flesh goat to north, Guizhou Province, and physique is solid, and chest breadth is dark, and back of the body waist is straight, and neck is sturdy, and had dark brown and filbert two kinds by hair, have black lineback and black neckstrap, childhood is shallow by hair color, and adult hair color deepens.The numb sheep dressing percentage in north, Guizhou Province is 56.6%, and meat production is good, and breeding potential is high, and premunition is strong, adapts to mountain area extensive feeding, has larger development potentiality.But in reality is raised, growth performance and the plasma biochemical index of the numb sheep weaned lamb in north, Guizhou Province are often not ideal enough, there is the problems such as raise benefit is low.
Summary of the invention
The object of this invention is to provide the application of a kind of powered milk substitute in the numb sheep weaned lamb in north, Guizhou Province is raised, to improve the numb sheep raise benefit in north, Guizhou Province.
Technical scheme of the present invention is such:
The application of powered milk substitute in the numb sheep weaned lamb in north, Guizhou Province is raised, it is supplementary feeding powered milk substitute in the numb lamb sheep Basic drawing in north, Guizhou Province; Described Basic drawing is made up of whole-plant corn, vinasse and fine fodder compound.The described powered milk substitute supplementary feeding phase is start after the numb lamb sheep wean in north, Guizhou Province, supplementary feeding method for being directly added in the numb lamb sheep diet in north, Guizhou Province, and the method for prior art normally adopt powered milk substitute and water are mixed after feed with feeding bottle, there is workload large, labour intensity is high, and efficiency is low; Cold snap lamb can not finish off in time, then drinks after cooling, easily causes the health problems such as diarrhoea.The supplementary feeding amount of powered milk substitute is 4% ~ 6% of the numb lamb sheep Basic drawing dry matter weight in north, Guizhou Province.Preferred supplementary feeding amount is 4%.
Wherein, described fine fodder compound is made up of the component of following percentage by weight: corn 66%, dregs of beans 18%, wheat bran 12%, urea 1%, premix 1%, calcium monohydrogen phosphate 1.5%, salt 0.5%.Described powered milk substitute is made up of following component: vitamin A, vitamine D3, vitamin E, lactoprotein powder, whey powder, plant protein powder, calcium carbonate, calcium bicarbonate, amino acid, salt, ethoxyquinoline.
Technique effect of the present invention: 1. supplementary feeding powered milk substitute can improve lamb dry matter intake (
p<0.05) and diet dry, thick protein, neutral detergent fiber, acid detergent fiber, the apparent digestibility of coarse ash and nitrogen balance state and biological value (
p<0.05), on the impact of the digestibility of crude fat little (
p>0.05); 2. in feed add 4% ~ 6% powered milk substitute be improved lamb average daily gain (
p<0.05), reduce feed-weight ratio (
p<0.05) trend; 3. the full phase, 4% horizontal powered milk substitute can improve lamb Plasma Total Antioxidant ability, superoxide dismutase, catalase, lysozyme activity (
p<0.05), reduce MDA, urea nitrogen levels (
p<0.05), to glutathione peroxidase, glucose, alkaline phosphatase do not produce significant difference (
p>0.05).As can be seen here, diet supplementary feeding optimal level powered milk substitute can improve the numb lamb sheep average daily gain of north, Guizhou Province, nutrient digestibility, reduces feed-weight ratio, improves food conversion ratio; Also blood plasma anti-oxidation stress ability, protein utilization rate and immunity can effectively be strengthened.
Accompanying drawing explanation
Fig. 1 is just trying phase sheepfold comfort index schematic diagram.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1:
1 materials and methods
1.1 experimental design
Test and carry out at the numb sheep sheep stud in north, scale Guizhou Province, Guizhou Province, nearly 1500 of livestock on hand, belongs to large scale business Yang Chang.By the principle that body weight is close, by 40 4 monthly ages, lamb that body condition is good, be divided into 4 groups at random by the design of single-factor randomized block experiment: control group (15.02 ± 0.59kgBW), process 1 group (14.56 ± 0.92kgBW), process 2 groups (15.53 ± 1.60kgBW), process 3 groups (14.90 ± 0.89kgBW), often organize 10.Each group of lamb original body mass difference not significantly (
p>0.05).Based on diet dry matter content, each group powered milk substitute level is respectively 0%, 2%, 4%, 6%.The numb sheep Screening Experiment of Diet in north, Guizhou Province is made up of whole-plant corn, fine fodder and a small amount of vinasse, and its nutritional labeling is in table 1.
Whole duration of test lamb carries out unified management.The full drylot feeding of lamb subfield, every day, 9:00 and 18:00 threw something and fed after clearing up feed trough, free choice feeding.Sheep hurdle gravity-flow ventilation, leaves enough spaces, freely drinks water.Test continues 40d altogether: comprise and raise phase 10d in advance, front 7d be used for transition lamb grouping produce physiological stress and gregariousness adapt to, rear 3d is a small amount of gradually to feed powered milk substitute (namely processing 1 group, 2 groups, 3 groups powered milk substitutes <1.5g, 3g, 4.5g respectively) by each group of setting <10% level, makes lamb before just trying the phase, adapt to the taste of powered milk substitute; Just trying phase 30d, be divided into 3 periods, each period is 10d.Therefore, the whole test period comprises 4 periods: raise the phase (1 ~ 10d) in advance, just try 1 phase (11 ~ 20d), just try 2 phases (21 ~ 30d), just try 3 phases (31 ~ 40d).
1.2 diet sample collections
For accurate assurance lamb Diet Nutrient, duration of test gathers diet sample 2 times/d when feeding ,-20 DEG C of freezen protective.After having tested, diet sample will be mixed dry, pulverize, for measuring crude protein (crudeprotein, CP), crude fat (etherextract, EE), neutral detergent fiber (neutraldetergentfiber, NDF), acid detergent fiber (aciddetergentfiber, ADF), coarse ash (Ash).
1.3 Testing index
1.3.1 warm and humid ambient parameter
For ensureing Accurate Determining sheep hurdle humiture, Hygrothermograph is suspended in the middle part of sheepfold with lamb equal-height position, and guarantee that Hygrothermograph normally ventilates and prevents sunlight from irradiating and drenching with rain.After the phase of raising in advance adapts to, to just the phase of trying starts the temperature and the relative humidity that record sheep hurdle 8:00,14:00,20:00h every 1d respectively, ask 3 mean values, comfort index is carried out with reference to following formula:
THI=0.8×（AT）+[RH/100]×（AT-14.4）+46.4
In formula: THI represents comfort index, AT represents ambient temperature, and RH represents relative humidity.As THI<70, represent that examination sheep is in comfortable (non-heat stress) environment; As 70<THI<75, show that lamb is in slight heat stress environment; As 75<THI<78, represent that lamb is in moderate heat stress environment; As THI > 78, show that lamb is in serious heat stress environment.
1.3.2 growth performance
1.3.2.1 dry matter intake
The feeding volume that accurate recording is fed at every turn and clout amount, calculate dry matter intake (drymatterintake, DMI)=feeding volume-surplus according to moisture.
1.3.2.2 nutrient digestibility and nitrogen balance
Test adopts full receipts excrement method, at the last 1 day collection excrement sample in each stage, collects 4 days altogether, is mixed as this group lamb mixing excrement sample.Ight soil with row with receipts, collected fresh excrement correct amount, mixing, get 20% as sample, and by weight 10% add 10% hydrochloric acid, be placed in-20 DEG C of preservations.After off-test, mix, dry, cross the pulverizing of 1mm sieve, mensuration DM, CP, EE, NDF, ADF, Ash, for calculating Nutrient Apparent Digestibility.
While receipts excrement, utilize plastic foil to surround sheepfold along bottom, cut off the method for osculum collection urine in bottom, recording volume after the urine at every turn collected 4 layers of filtered through gauze, get 10%(volume fraction) as sample, with the hydrochloric acid of 10%, pH is adjusted to 2, record acid adding amount, is placed in-20 DEG C and preserves N content to be measured, for calculating N balance.
Nutrient digestibility (%)=(nutrient feed intake-nutrient manure content)/nutrient feed intake × 100%.
It is as follows that N balances relevant calculating formulas:
Absorbed nitrogen=eat nitrogen-fecal nitrogen;
Deposition nitrogen=eat nitrogen-(fecal nitrogen+urinary nitrogen);
Digestibility=(the eating nitrogen-fecal nitrogen) of nitrogen/eat nitrogen × 100%;
Net protein utilization=deposition nitrogen/eat nitrogen × 100%;
Biological value (biologicalvalue, BV)=deposition nitrogen/absorbed nitrogen × 100% of nitrogen
[16].
1.3.2.3 weightening finish and feed-weight ratio
After raising phase gregariousness adaptation in advance, with 10d body weight for starting weight benchmark, weigh in each latter stage in stage, record 20d, 30d, 40d respectively and raise front body weight morning, calculate Gain weight, wherein 40d raises front body weight for last heavy morning.
A, total augment weight=end weight-starting weight;
B, average daily gain=(end weight-starting weight)/30.
C, feed-weight ratio=dry matter intake/average daily gain.
1.3.3 physiochemical indice
To enter the phase of just trying for taking a blood sample the initial phase, respectively at 10d, 20d, 30d, 40d disposable liquaemin anticoagulation vacuum test tube is raised front from jugular vein blood collection 10ml morning, 3000r/min(1006.20g) centrifugal 15min, collect upper plasma, be placed in-20 DEG C of refrigerators to preserve, for measuring blood plasma anti-oxidation stress capacity index: total antioxidation stress ability (T-AOC), superoxide dismutase (SOD), glutathione peroxidase mutase (GSH-Px), catalase (CAT), MDA (MDA), biochemical indicator: glucose (Glu), urea nitrogen (PUN), alkaline phosphatase (AKP), lysozyme (LZM).Detection kit is built up Bioengineering Research Institute by Nanjing and is provided.
1.4 data processings and statistical analysis
Test data represents with mean+SD (mean ± SD).Substantially, after arranging data with Excel2010, SAS9.3 statistical processing software is utilized to carry out one-way analysis of variance.Each group of testing index otherness Multiple range test Duncan ' s method is carried out, and each group difference level of signifiance is decided to be
p<0.05.
2 results
2.1 ambient parameter
As seen from Figure 1, sheep surrounding environment daily mean temperature is tried between 23.50 ~ 29.43 DEG C, average out to 26.59 DEG C (± 2.87); Per day relative humidity between 53.33 ~ 80.33%, average out to 68.42%(± 10.43).Calculating per day comfort index is thus between 75.13 ~ 79.78, average out to 77.43(± 2.00), illustrate that examination sheep is in the feeding environment close to serious heat stress.
2.2 growth performance
2.2.1 dry matter intake
From table 2, test first stage (raising the phase in advance), each group DMI change is not obvious, difference not significantly (
p>0.05).But along with the continuity of time, in second and third stage, obviously comparatively control group is high for each processed group DMI, difference reach the level of signifiance (
p<0.05), the highest to process 2 groups.To fourth stage, although control group DMI and processed group difference not significantly (
pbut still be in floor level >0.05).From whole experimental stage, each processed group DMI be all significantly higher than control group (
p<0.05), the highest to process 2 groups, higher than control group by 16.50%.
2.2.2 plant recovery of nutrient
2.2.2.1 apparent digestibility
From whole experimental stage, supplementary feeding powered milk substitute can improve DM, CP, EE, NDF, ADF, Ash apparent digestibility (table 3).To DM, process 1 group, 2 groups, 3 groups respectively higher than control group by 5.47%, 11.61%, 5.88%, process 2 groups be significantly higher than control group (
p<0.05).To CP, the highest to process 2 groups, be significantly higher than control group 19.21%(
p<0.05), all the other respectively organize difference not significantly (
p>0.05).To EE, 4 group differences all not significantly (
p>0.05), 1 group, 2 groups are processed a little more than control group.To NDF, ADF, each processed group be significantly higher than control group (
p<0.05), the highest to process 2 groups; Process 2 groups be significantly higher than simultaneously process 1 group, 3 groups (
p<0.05).To Ash, the highest to process 2 groups, be significantly higher than all the other 3 groups (
p<0.05).
2.2.2.2 nitrogen balance
As shown in Table 4, to eating nitrogen, each process group difference not significantly (
p>0.05), but be all significantly higher than control group (
p<0.05), respectively high by 10.88%, 16.51%, 12.32%.To fecal nitrogen, each group difference all not significantly (
p>0.05), minimum to process 2 groups.To urinary nitrogen, process 1 group, 3 groups higher, be significantly higher than control group, process 2 groups (
p<0.05).To absorbed nitrogen, minimum with control group, significantly lower than each processed group (
p<0.05), 1 group, 2 groups, 3 groups low by 14.13%, 28.05%, 17.36% are comparatively processed respectively.To deposition nitrogen, process 2 groups and be significantly higher than control group (44.48%), process 1 group (35.52%) and 3 group (31.94%;
p<0.05).To the apparent digestibility of nitrogen, each process group difference not significantly (
p>0.05), the highest to process 2 groups, be significantly higher than control group 19.21%(
p<0.05).To the overall utilization of nitrogen, the highest to process 2 groups, respectively higher than control group 54.15%(
p<0.05) 1 group of 47.34%(, is processed
p<0.05) 3 groups of 41.85%(, are processed
p<0.05).To the biological value of nitrogen, corresponding the highest to process 2 groups, respectively higher than control group 21.63%(
p<0.05) 1 group of 21.93%(, is processed
p<0.05) 3 groups of 21.50%(, are processed
p<0.05).
2.2.3 weightening finish and feed-weight ratio
As shown in Table 5, within the just examination phase scheduling to last 30d, although starting weight between 4 groups of lambs and end heavily change not quite, difference remarkable (
p>0.05), but each processed group total augment weight amplification is comparatively obvious, process 1 group, 2 groups, 3 groups respectively higher than control group by 15.48%, 50.32%, 67.10%, process 2 groups, 3 groups also reach with control group the significance level of difference (
p<0.05).Correspondingly, average daily gain shows same effect, process 2 groups, 3 groups be significantly higher than control group (
p<0.05).From feed-weight ratio, along with the increase of powered milk substitute level, feed-weight ratio reduces gradually.Whole experimental period, process 3 groups of conversion ratios the highest, process 2 groups of conversion ratios and take second place, all lower than process 1 group and control group, and difference reach the level of signifiance (
p<0.05).
Note: starting weight is lamb 10d numerical value.
2.3 blood plasma anti-oxidation stress abilities
From table 6, powered milk substitute can improve lamb anti-oxidation stress ability.Each group of examination sheep blood plasma T-AOC level these 3 time point differences of 10d, 30d, 40d all not significantly (
p>0.05); But at 20d, process 1 group, 2 groups be significantly higher than control group (
p<0.05), improve 58.38%, 61.27% respectively.From whole experimental period, also best to process 2 groups of effects, be significantly higher than control group 34.90%(
p<0.05), and with process 1 group, 3 groups of difference not significantly (
p>0.05).
To plasma SOD level, on-test, powered milk substitute did not show impact effect to 30d, each group difference all not significantly (
p>0.05); To 40d, process 2 groups of plasma SOD levels the highest, improve 18.39% respectively than control group and process 1 group, 28.28%(
p<0.05).From the whole test period, process 2 groups of SOD levels the highest, have higher than control group trend (13.92%,
p<0.1).
Similar with T-AOC, each group 10d, 30d, 40d time point blood plasma GSH-Px level difference not significantly (
p>0.05); 20d, control group be significantly higher than process 3 groups (
p<0.05), with process 1 group, 2 groups of difference not significantly (
p>0.05).In whole experimental period, each group GSH-Px level difference not significantly (
pbut overall the highest to process 2 groups >0.05).
At each blood sampling time point, the change of each group CAT level is little, difference all not significantly (
p>0.05).Within the whole test period, process 2 groups of levels the highest, be significantly higher than control group 21.77%(
p<0.05); All the other respectively the equal difference of group do not reach the level of signifiance (
p>0.05).
To blood plasma MDA level, at 10d, process 3 groups be significantly higher than process 1 group (
p<0.05), than control group height 21.46%(
p>0.05); 20d, process 2 groups lower than process 1 group (
p<0.05); 30d, 40d, blood plasma MDA level do not show significant difference (
p>0.05).Within the whole test period, minimum to process 2 groups of MDA levels, significantly lower than control group 15.64%(
p<0.05).
2.4 plasma biochemical index
As shown in Table 7, to blood plasma Glu level, between each test group 10d difference not significantly (
p>0.05), process 1 group, 2 groups significantly lower than control group (
p<0.05); The each group difference of 20d, 30d not significantly (
p>0.05); To 40d, process 3 groups be significantly higher than control group, process 2 groups (
p<0.05).From the whole test period, each group blood plasma Glu level difference not significantly (
p>0.05).
Test to 30d, each group lamb blood plasma PUN level difference all not significantly (
p>0.05); To 40d, process 2 groups minimum, significantly lower than control group (
p<0.05).Whole duration of test, also minimum to process 2 groups, significantly lower than control group 17.96%(
p<0.05) 1 group of 13.80%(, is processed
p<0.05).
Supplementary feeding powered milk substitute is limited on the impact of lamb plasma A KP level, at each blood sampling point with in whole experimental period, respectively organize difference remarkable (
p>0.05).
To blood plasma LZM level, 3 test group 4 time point levels all higher than control group, but difference do not reach the level of signifiance (
p>0.05).Whole experimental stage, the highest to process 2 groups of LZM levels, comparatively control group is high by 33.27%, significant difference (
p<0.05).
3 discuss
3.1 powered milk substitutes are on the impact of the numb sheep growth performance in north, Guizhou Province
3.1.1 dry matter intake
Feed intake weighs the yardstick that nutriment takes in quantity, is the key factor determining animal growth rate.After the nutriment of feed intake only meets and maintains and need, could be for the production of.Do not have sufficient feed intake, the growth potential of animal just can not give full play to.In whole process of the test, the DMI of 3 processed group be all significantly higher than control group (
p<0.05), the highest to process 2 groups, there is the highest N intake (table 4) simultaneously.This is because test powered milk substitute used and contain the smell that lactoprotein powder, whey powder etc. have source of parents milk, nutrition feature is obvious, can improve diet palatability, promote that lamb searches for food; But DMI is not with the increase of powered milk substitute level, and straight line improves, and reaches maximum in 4% level, if prompting powered milk substitute breast source taste overrich, palatability can be reduced.Testing animal used is weaned lamb, and this result is also pointed out, and wean is not the active selection of lamb, with the powered milk substitute that the mode of directly adding in diet is appropriate to its supplementary feeding, it still can be stimulated to search for food, improve feed intake.
3.1.2 nutrient digestibility and nitrogen balance
Digestibility is the concentrated expression of animal to feed digestion characteristic, can show that alimentary canal is to the digestible degree of feed nutrition material and utilization ratio.This experimental study shows, the digestibility of each nutriment of examination sheep of 3 processed group and the absorptivity of N and deposition are better than control group all to a certain extent, the most obvious to process 2 groups.The digestion of nutriment and metabolism in this animal body that has been the differentia influence of nutriment and concentration contained by varying level powered milk substitute, thus change the digestion and metabolism rate of nutrient.In this test, each processed group goat DMI is all significantly higher than control group, and this is that the raising of goat digestibility provides powerful guarantee.Because the increase of goat feed intake, impel rumen microorganism constantly to multiply, the growth that the volatile fatty acid that lumen fermentation produces and microprotein etc. can be examination sheep provides material base; Meanwhile, diet kind and the secretion of various nutrient composition content to digestive ferment have facilitation, and roughage can promote the growth of metenteron, thus promote the secretion of digestive ferment.In general, in diet, add suitable powered milk substitute can strengthen lamb to the digestion power of nutriment and N poised state, be of value to deposition and the utilization of nutrient, improve growth of animal performance.
3.1.3 weightening finish and feed-weight ratio
Reduce feed-weight ratio, improve the free-revving engine that daily gain is Animal experiment, raising sheep raising benefit is had great importance.This experimental study shows, supplementary feeding lamb powered milk substitute significantly can increase its body weight amplification and average daily gain, promotes that it grows fast, shortens marketing time; Can significantly reduce daily ration feed-weight ratio, improve food conversion ratio.
3.2 powered milk substitutes are on the impact of the numb sheep blood metabolic index in north, Guizhou Province
3.2.1 anti-oxidation stress ability
Blood uninterruptedly circulates in vivo, and its metabolic index level can objectively respond metabolism state and physiological function.Often increase with blood T-AOC, SOD, GSH-Px, CAT and/or MDA reduction in test, show that anti-oxidation stress ability strengthens, otherwise then reduce.Powered milk substitute can significantly improve lamb blood plasma T-AOC, SOD, CAT level, and significantly reduces blood plasma MDA level simultaneously.This is because, after supplementary feeding powered milk substitute, lamb feed intake improves, while meeting the nutritional need of rumen microorganism, additionally provide the nutrient of lamb growth, its oxidative damage that lamb is produced can be reduced by scavenging free radicals to a certain extent, strengthen the immune defense system of body, thus improve the anti-oxidation stress ability of lamb.Visible, from animal Nutritional studies angle, increasing T-AOC, SOD, GSH-Px, CAT level, reduce MDA level, is the effective measures strengthening anti-oxidation stress ability.It is worth mentioning that, anti-oxidation stress ability not continues with the increase of powered milk substitute Pitch-based sphere to improve, and there is a threshold value (this test is 4%).This is just in time consistent with growth performance result, and namely 4% horizontal powered milk substitute improves lamb feed intake, improves nutrient digestibility, illustrates in producing and should not add too much powered milk substitute.
3.2.2 plasma biochemical index
The change of biochemical blood parameters is the reflection that histocyte permeability changes and body metabolism function changes.Glu is the energy source of living cells and metabolic intermediate product, is the important indicator weighing animal body self-energy balance.High temperature season can cause animal adrenal gland cortex and medullary substance hyperfunction, and in blood plasma, glucocorticoid levels improves and animal body catabolism is strengthened, and blood sugar level raises, to resist the pressure that external high temperature causes body.Process of the present invention 2 groups of lamb Glu levels significantly lower than control group, show that diet adds suitable powered milk substitute and can effectively alleviate lamb heat stress at 10d, 40d.
Urea nitrogen is mainly derived from liver, is proteometabolic major end products in body, constitutes the nonprotein nitrogen of the overwhelming majority in blood, is one of reflection diet Protein utilization index.Plasma Urea nitrogen content is relevant with the utilization rate of nitrogen substance total amount, protein in diet, Plasma Urea nitrogen content all can be caused to raise when nitrogen substance in diet increases or protein utilization reduces, urea nitrogen levels reduction can be the proteins deposited of other parts provides the raw material such as sufficient amino acid.In this test, process 2 groups of urea nitrogen levels test latter stage and the whole test period significantly lower than control group, illustrate that optimal level powered milk substitute effectively can improve the utilization rate of feed protein.Trace it to its cause, be that amount and the digestibility of urea nitrogen and digestible protein has important relationship, powered milk substitute is rich in digestible vegetable protein, adds nitrogen nutrition composition in diet, provides the raw materials such as a large amount of amino acid to body, and urea nitrogen levels in blood is reduced.
AKP is distributed widely in each internal organs of body, is that one can by dephosphorylized for corresponding substrate enzyme, is one of the most frequently used marker enzyme of immune diagnostic reagent product.When animal place be subject to the external world stress time, can cause body tissue cellular damage, in tissue, AKP enters blood, improves plasma A KP concentration.It is remarkable that this to test between each group plasma A KP level difference, illustrate powered milk substitute in diet to goat stress be less, do not cause lamb body tissue cellular damage; Processing 2 groups of levels minimum, is because optimal level powered milk substitute effectively can slow down summer fever and on the impact of lamb, stress be improved the effect of tissue damage.
LZM is a kind of heat labile basic protein of low-molecular-weight that can destroy bacterial cell wall construction, is the nospecific immunity factor in body normal body fluid and tissue.In this test, processed group lamb LZM level at each time point all higher than control group, wherein process 2 groups and be significantly higher than control group in whole breeding cycle, show that powered milk substitute can eliminate the impact of nonspecific immune reaction on lamb, contribute to strengthening lamb immunity power.
4 conclusions
Under condition of the present invention, the conclusion (of pressure testing) of powered milk substitute to the numb sheep weaned lamb in north, Guizhou Province is as follows:
dMI and plant recovery of nutrient can be improved, improve daily gain, reduce feed-weight ratio, growth promoting effects performance; Blood plasma T-AOC, SOD, CAT, LZM content can be improved, reduce MDA, PUN, AKP level, contribute to strengthening anti-oxidation stress ability, immunity and protein utilization rate.
in general, the numb sheep weaned lamb in north preferred Pitch-based sphere of powered milk substitute under condition of the present invention in Guizhou Province is 4%.
Certainly, more than just embody rule example of the present invention, the technical scheme that the present invention also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within protection domain of the presently claimed invention.
Claims (4)
1. the application of powered milk substitute in the numb sheep weaned lamb in north, Guizhou Province is raised, is characterized in that: supplementary feeding powered milk substitute in the numb lamb sheep Basic drawing in north, Guizhou Province; Described Basic drawing is made up of whole-plant corn, vinasse and fine fodder compound; The described powered milk substitute supplementary feeding phase is start after the numb lamb sheep wean in north, Guizhou Province, and supplementary feeding method is for being directly added in the numb lamb sheep diet in north, Guizhou Province.
2. the application of powered milk substitute according to claim 1 in the numb sheep weaned lamb in north, Guizhou Province is raised, is characterized in that: the supplementary feeding amount of described powered milk substitute is 4% ~ 6% of the numb lamb sheep Basic drawing dry matter weight in north, Guizhou Province.
3. the application of powered milk substitute according to claim 2 in the numb sheep weaned lamb in north, Guizhou Province is raised, is characterized in that: described fine fodder compound is made up of the component of following percentage by weight: corn 66%, dregs of beans 18%, wheat bran 12%, urea 1%, premix 1%, calcium monohydrogen phosphate 1.5%, salt 0.5%.
4. the application of powered milk substitute according to claim 2 in the numb sheep weaned lamb in north, Guizhou Province is raised, is characterized in that: described powered milk substitute is made up of following component: vitamin A, vitamine D3, vitamin E, lactoprotein powder, whey powder, plant protein powder, calcium carbonate, calcium bicarbonate, amino acid, salt, ethoxyquinoline.
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| CN106551121A (en) * | 2016-11-21 | 2017-04-05 | 仁怀市黔北麻羊原种场 | A kind of Guizhou Province north fiber crops sheep growth stage feed |
| CN107410716A (en) * | 2017-06-26 | 2017-12-01 | 仁怀市黔北麻羊原种场 | A kind of feed suitable for numb sheep lamb |
| CN107455582A (en) * | 2017-09-29 | 2017-12-12 | 界首市春风家庭农场 | A kind of full nutrition feed of weaned lamb in advance |
| CN112997961A (en) * | 2021-02-01 | 2021-06-22 | 广东省农业科学院动物科学研究所 | Physiological and biochemical marker for heat resistance difference between different goat varieties and evaluation method |
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| CN107455582A (en) * | 2017-09-29 | 2017-12-12 | 界首市春风家庭农场 | A kind of full nutrition feed of weaned lamb in advance |
| CN112997961A (en) * | 2021-02-01 | 2021-06-22 | 广东省农业科学院动物科学研究所 | Physiological and biochemical marker for heat resistance difference between different goat varieties and evaluation method |
| CN112997961B (en) * | 2021-02-01 | 2022-12-27 | 广东省农业科学院动物科学研究所 | Physiological and biochemical marker for heat resistance difference between different goat varieties and evaluation method |
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