A kind of abacus of sow's expected farrowing date

Abstract

The invention discloses an abacus for a sow's expected delivery date, and mainly relates to the field of sow breeding appliances. It includes a calendar plate and a gestational week plate. A cavity is arranged below each scale line inside the calendar plate, and an identification card is provided in the cavity. The identification card consists of a sliding block at the inner end and a blank card at the outer end. Composition, the width of the sliding block is larger than that of the blank card, and the two are hinged through the connecting shaft, the sliding block is slidably connected with the cavity, and the peripheral side of the calendar disc is provided with a card outlet hole communicating with the cavity, The width of the card outlet hole corresponds to the blank card, and also includes a chassis, which is also circular and is arranged on the side of the calendar disk away from the gestational period disk. connections. The beneficial effect of the present invention is that the calendar disc can be rotated for viewing, and has a compact structure, convenient use, and freely retractable labeling functions, which is beneficial to tracking, viewing and refined feeding during pregnancy.

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

Images