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Boar reveals time, duration and frequency, proper boar, gilt or sow scale, expose a method, hormone, . . . . . .
The day that mothball sow enters adolescence age with the sow ablactation oestrus is removed all with kind the productivity of swinery and reservation rate are concerned. Revulsive it is to be used count rut the day ahead of schedule, several weeks even the operation of a few months. In gilt, boar is exposed it is mature to can quicken cerebrum, be in in order to help target day age, weight and maturity leave breed. In anticipate enter preadolescence 3-4 week to begin, contact 15 minutes with boar everyday, strengthen oestrus in mothball sow.
Boar of hill of use cross plum undertakes oestrus detects lying between column
Expose prematurely won't achieve good synchronous sex, won't prevent adolescent defer or hybridization too late day age is bigger with heavier mothball sow. Daily contact can obtain boar and gilt first-rate is revulsive reaction. Proper boar: Gilt scale (≤ 1: 15) very important, if scale increases, can lengthen daily the amount of exposed duration or boar. Use pure boar or the boar that excise seminiferous duct to be able to provide all-around stimulation. Use contain face plate, the boar of tall sexual desire of device control character that involves leader tape or mechanical and mobile unit, it is very important that with avoiding gilt should be stimulated and hoof and leg ministry get hurt.
Use those who show the active boar that is interested in gilt to lie between column to expose
Boar of cross plum hill is very popular, because its are smaller, more docile, but the sexual desire that still shows Gao Shuiping. When moving gilt or boar to expose sty, contact of the boar that lie between column is very effective also. Everyday, two or the persistent contact that lie between column can make adolescence shifts to an earlier date, and the effect with as a result of more frequent contact better generation. Expose to make lie between column effective, all gilt in sty must have enough space to undertake interacting closely, so that can see in crawl, smell and hear the voice of boar. The boar of the design exposes area to be able to use many boar and sty to lie between column in order to optimize to expose. If decisive grandma exceeds 3 weeks, after the sow ablactations or lactation later period also can react to revulsive generation. After the sow ablactations daily lie between column to expose 1-2 minute, rut adds 4-6 day, ameliorable the rut that the sow produces first and seasonal not Yo period.
The gilt of the preadolescence and sow inject hormone (equestrian chorion closes to sexual gland hormone and hormone of sexual gland of hurried of film of person cloth with soft nap) , can be inside 4-5 day revulsive and fast follicular grow and oestrus. In gilt, in the preadolescence week or a few boar to 3-4 week expose the sow that did not react to undertake processing also is effective. The processing of the sow when ablactationing can be used at reducing the risk of oestrus defer. The optimal reaction that handles to hormone depends on complete dosage is accepted in the proper place of the animal and proper deepness, and there won't be dosage leak in inject place.
Mothball sow shows rut not to move reflection to what back pressure checks
The feature that rut detects depends on gilt or sow do not move reflection, the commonnest at boar existence is reached have or did not bring to bear on back pressure. When ovarian and follicular maturity releases estrogen, can reach brain, show be in heat. The strength that the sow needs when introducing boar and time depend on oestrus phase. After just beginning with oestrus or the photograph before oestrus ends is compared, in oestrus metaphase happening is mixed the most quickly the strongest do not move reflection. Detect to arrive in move after region of new developed area the oestrus of gilt, detecting time of put apart more makes its are explored before the test.
Technician ablactations in the examination inside sty the oestrus of the sow
Should be in inside sty when examination sow oestrus, sometimes day age is bigger won't be opposite possibly with the sow of certain strain the positive with boar and apparent generation of back pressure experiment or negative reaction. In this case, use back and flank chafe, notice to did not phonate evaluate, fixed head position is mixed reflex of ear radical ministry is OK the help identifies correctly. It is very important to accuracy to detect and use same program what undertake accord with the interval of set everyday, be opposite especially continuously only the mothball sow of the brief oestrus of 1- 2 day. Ablactation the rut of the sow is longer, but what begin to end with oestrus to oestrus is accurate detect the time that can be used at making first time hybridization, and still can prevent the terminal insemination after oestrus ends. Finally, the gilt of rut and sow stand continuously, show duration only amount to minute do not answer to sex of several hours behavior. When cannot detect oestrus or detect when defer, quality do not answer behavior becomes an issue, and be exposed in successive boar normally, boar is apart from too close or be in windward place, and detect and breeding is coinstantaneous. Before this kind of method allows to checking oestrus, in downwind reveal time with what boar lengthens in photograph adjacent sty.
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