Sow due date counting frame

Abstract

The invention discloses a sow due date counting frame, and mainly relates to the field of sow breeding tools. The sow due date counting frame comprises a calendar disk and a gestational week disk, wherein cavities are arranged below corresponding scale lines in the calendar disk; identification cards are arranged in the cavities and consist of sliding clamping blocks at the inner ends and blank cards at the outer ends; the widths of the sliding clamping blocks are greater than those of the blank cards, and the sliding clamping blocks are hinged to the blank cards through connection shafts; the sliding clamping blocks are connected with the cavities in a sliding manner; card outlet holes communicated with the cavities are formed in the circumferential side of the calendar disk; the widths of the card outlet holes correspond to the blank cards; the sow due date counting frame further comprises a base plate; the base plate is circular and is arranged on one surface, far away from the gestational week disk, of the calendar disk; the base plate, the calendar disk and the gestational week disk are connected in sequence in a hinged manner. The sow due date counting frame has the benefits that the calendar disk can rotate to be checked and has marking functions of compact structure, convenience in use and automatic stretching; tracking, checking and fine breeding in a pregnancy process are facilitated.

Description

technical field [0001] The invention relates to the field of sow breeding utensils, in particular to an abacus for sows' expected delivery date. Background technique [0002] From the day of mating conception to the day of delivery, the gestation cycle of sows is generally 108-123 days, with an average of about 114 days. In order to strengthen the refined management of pregnant sows, ensure the health and nutrition of sows and embryos, and make timely prenatal preparations such as transferring sows, and improve the survival rate of piglets, pregnant sows are now in the feeding management. It is necessary to calculate and track the expected date of delivery in time. At present, there are two general methods for calculating the expected date of farrowing of sows: [0003] The first method is the calculation method, that is, the expected date of birth is calculated manually. Specifically, it is the "three three three" algorithm, that is, adding 3 months, 3 weeks and 3 days t...

AI Technical Summary

Problems solved by technology

Although this kind of device ensures accuracy, is small and exquisite in shape and is easy to carry, and improves the above-mentioned drawbacks of the reckoning table, it has not been widely used because it is not ideal in the following aspects:

[0006] (1) Difficult to identify: In the feeding and management of pregnant sows, it is not only necessary to determine the expected date of delivery, but also to continuously track the pregnancy process

The existing abacus for sows' expected farrowing date is relatively simple and rough. Although the calculation is intuitive and clear, the 365-day date line segments are densely arranged on the abacus, leaving very little space, making it difficult to make a clear and complete mark, which brings difficulties to the recording and tracking work

[0007] If you insist on marking on the abacus, the cramped space greatly limits the amount of information marked. Generally, you can only mark the relevant date at most, and you cannot record the number and condition of the corresponding pregnant sow together, which is not conducive to fine management realization of

And when there are many pregnant sows, it is difficult to distinguish them by number, causing confusion to management

At the same time, it is difficult to see clearly because of the fine font of the content, which brings great inconvenience to daily viewing

[0008] If you rely on other methods to record separately, on the one hand, it will bring trouble to the feeding management work, and when there are many pregnant sows, additional repeated inspections are required to guide the feeding work, which will increase the workload; on the other hand, too many processes Increased the difficulty of management, the process of determining the expected date of delivery-recording the expected date of delivery-repeated review amplifies the proportion of human factors and increases the error rate

[0009] (2) Inconvenient to check: the existing abacus of expected farrowing date of sows is hand-held. Although it is convenient to check, it needs to be collected repeatedly and carried with you when using it, which is very troublesome

Or for hanging on the wall, although it can be hung directly, it does not need to be collected and carried before and after use, which simplifies the workload and work flow. The unique calendar layout makes it difficult to check the date at the bottom due to inversion, which brings inconvenience to the work

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