Weighers and how to use the
Contents
1. E antenna is optional E Max no of Printer Manual M To be used for weighers output platform on breeders Bre connected floor F or broilers Bro to hanging rearing R pullets P computer platform HP and turkeys T 8 No HP T 4 No HP or perch T Bre Bro Layers 4 at DWS 20 X HP suspending T 4 X HP suspending Bre Bro 4 at DWS 20 X HP suspending Bre Bro layers breeders 4 at DWS 20 X Platform Bro rearing layers on perch 1 X F Bre Bro 2 X F Bre Bro 1 M 1 M 4 X F Bre Bro and T 4 X F Bre Bro and T 8 X F Bre Bro and T 2 X F Bre Bro 31 lative average If a feeding program is ap plied skip a day etc you can weigh them on the no feed day but also in the afternoon of the on feed day Some prefer this moment since there is no dramatic change in weights when transferred to every day feeding in production and birds are not bothered on the off feed day Manual or automatic It has long been believed that manual weighing is more accurate than automat ic weighing Today we know that it is not always true at least not when using mod ern electronic weighers properly In areas where labour is cheap and there is no in terest in daily weight gains one can effi ciently make use of manual weighers But you have to make sure that no errors are ii Eri a being made during reading of the scale TTE a ee ee and successive data processing Electronic i ij ea e aa ee weighers connected with data processors2. that either system me chanical or electronic is acceptable for measuring the weight of birds Electronic automatic weighers have the major ad vantage of being capable of weighing hundreds to thousands of birds per day and immediately process the data One can weigh the birds every minute of the day or specific hours of the day An important thing to remember is when you use one system for a flock you WORLD POULTRY Vol 19 No 6 2003 WP www AgriWorld nl a i 8 al should not change to another as results will vary All equipment no matter whether electronic or manual should be calibrated regularly to ensure accuracy since over a period of time all equipment loses its precision In recent years an increasing number of manufacturers have introduced a hanging platform to replace the floor scale The main reason for this has to do with accuracy Floor scales in some cases may show problems due to accumulation of dirt Besides these scales usually have a small platform which attracts fewer birds to step onto it Hanging platforms or swings seem to be more appreciated They have a big platform surface and al low several birds to rest on it at a time These scales also will have good records on male weights and have proven to be excellent for weighing turkeys Unique is the perch weigher made by Opticon This weigher can be used in cages and alternative housing systems They require little floor space and invite birds
3. 2 6089 Fax 972 9862 6087 Email info agrologic com Chick scale 850 10 Teglvaersvej 3 ACS5 LW1 8766 Norre Snede Denmark Double Up Tel 45 7577 1922 Fax 45 7577 1918 Email nd dacs dk Web www dacs dk PO Box 7131 5980 Fancom F47 AC Panningen The Netherlands Tel 31 77 3069600 Fancom 747 Fax 31 77 3069601 Email fancom fancom com Web www fancom com Stationsstraat 142 5963 AC DSW 1N Horst L The Netherlands Tel 31 77 389 3611 DWS 3 Fax 31 77 398 6835 DWS 4 Email info hotraco com DWS 5 Avenue de la Croix Verte Spot BP 35336 35653 Le Rheu Cedex France Tel 33 2 99 148866 Fax 33 2 99149422 Email intertec wanadoo fr Chick Scale 102 10 Chick scale 205 10 Kg max Type analogue Max no of A or electronic weighers stand alone S connected or connected to to computer E computer Eby PC 1 printer port S E 2 or printer E or printer or stand alone weighing plate 8 20 E 2 100 E 2 100 E 8 8 E 2 8 dep on software program 100 E 2 8 35 E 2 8 50 E 2 8 E 6 by antenna Printer output No gt X lt XxX XK X X Manual M platform on floor F or hanging platform HP M weigher from up to 9 different batches F A AP F HP F F HP F HP HP HP To be used for breeders Bre broilers Bro rearing R pullets P and turkeys T Bre Bro and P Bre Bro T and P Bre Bro T and P Bre Bro and T Bro T Bre Bro R T Bre
4. Automatic hanging platform weighers can weigh large numbers of both small and big birds on MANAGEMENT T don t have that weakness and provide a daily basis good arguments to make use of these au tomatic systems are active and easily step on the plat sion of the actual average weight of all Automatic scales save labour especially form but older and thus heavier birds birds To avoid this problem of selective when using more than one platform and show less activity and therefore not weighing some producers make use of offer the key to light and feed control enough birds may step on the weigher to catching screens in the last one or two Experience in the field has taught that obtain a reliable figure of the average weeks of the growing period The broilers during the first five weeks automatic flock weight Broilers with a lower that randomly walk into the screened weighers provide very accurate average weight show more activity and may area can be weighed by means of the elec weights of broilers Later differences may therefore step onto the platform more tronic weighing scale or a manual occur due to bird behaviour Young birds frequently creating an incorrect impres weigher Table 3 Bird weighers by company and weigher type Company Address Weigher Kg max Type analogue Max no of Printer Manual M To be used for A or electronic weighers output platform on breeders Bre stand alone S connected floor F or broile
5. Bro R P Bre Bro R P Bre R P Bre Bro www AgriWorld nl WP WORLD POULTRY Vol 19 No 6 2003 European systems In order to achieve op timum performance pullets and breed ers must be grown to specific bodyweight standards This varies between breed Floor weighers are available with either round or square platforms types and seasons Without knowledge of bodyweight gain it is very difficult to al locate the correct amount of feed and the flock will stand a good chance of not Table 2 Bird weighers by company and weigher type achieving target Muscle development is very important especially in the yield type broiler breeders By weighing the birds this muscle development can be as sessed and at the same time achieve good uniformity of bodyweight When to weigh and how many Generally birds should be weighed week ly starting from the first week During the first two weeks collective weighing can be made in batches of 5 or 10 chicks using a bucket After this birds should be weighed individually When weighing manually one has to corner birds by us ing lightweight catching screens in two or three places randomly chosen over the entire house As a rule of thumb 2 5 of a flock and never less than 75 birds should be weighed on the same day of the week at the same time Weighing a sufficient amount of birds and all birds penned is the only way of assessing uni formity Sufficient in this respect mean
6. WP MANAGEMENT Table 1 Bird weighers by company and weigher type Weighers and how to use the Advice to weigh birds is easily given and most producers understand the reasons why But the question remains how to weigh the birds and with what kind of weigher By Wiebe van der Sluis ody weight is one of the most im Boren bits of information a flock manager needs to efficiently man age his birds Weight and especially weight changes basically tells a lot about the physical condition of the flock and its future performance Without knowing broiler weights it is very difficult to know when to start the use of quantita tive feed control either by the use of light programmes or emptying the feed ers This is important for the very fast growing strains in order to slow down their growth and allows them to develop a better heart blood system and strong ah aie leg bones Weighing just before the birds are ready to go to market is critical espe cially in progressive countries that have processing plants with a very tight range Manual weighers are a real help to monitor weight gain in a flock of acceptable live weight at the killing plant The birds on either side of this range under or over the weight limit will have their revenue penalised in the Company Agro Logic LTD DACS Fancom Hotraco Intertec 30 Address Weigher PO Box 39781 Ramat Aviv 61397 Israel Tel 972 986
7. done by means of a perch since they take less floor space Learn to rely on it The use of automatic scales in pullets and breeders saves labour too but may not be sufficient or accurate enough for some to rely on For that reason it is of ten advised to weigh manually and com pare this with the automatic weighers This provides better insight into the accu racy of the electronic system and helps you understand and trust it One can nev er rely on one scale in a poultry house of tens of thousands of birds so two or three platforms placed at different loca tions will provide a more realistic flock weight Once males are mixed with females the automatic scale which is able to differen tiate between males and females is as good as the flock manager If he or she realises how to set the range to incorpo rate the true male weight then it can work The main advantage even if the weight is not correct is that the manager can see if the flock is gaining weight or not every day Many flock specialists sug gest to still manually weigh breeder flocks until the peak at least every two weeks to be sure that the data given by the automatic weighers still match with the true birds weight Despite their scep ticism they would be watching the daily weight gain registered by the automatic scale very carefully and would rely com pletely on these weighers as soon the birds reach the production peak Management support One can conclude
8. rs Bro or connected to to hanging rearing R pullets P computer E computer platform HP and turkeys T Skov Hedelund 4 Glyngore DK 7870 DOL 95 E 2 X F Bre Bre and T Roslev Denmark Platforms Tele t45 717 S555 DOL 97 30 Fax 45 7217 5959 DOL98B 5 Email skov skov com Star Agri PO Box 112 660 AC Wijchen EMPS S 1 X M Bre Bro The Netherlands Tel 31 24 648 7222 APWS SE 1 2 X HP Bre Bro and T Fax 31 24 648 7223 Email star agri wxs nl Web www staragri nl Stienen Hulsenweg 11 6031 SP SW 2000 50 100 E 2 X HP Bre Bro and T Nederweert The Netherlands Tel 31 495 63 2956 Fax 31 495 63 2981 Email info StienenBE com Web www StienenBE com Tuffigo Z 1 De Troyalac H 29170 Avipes 30 5 1 X M F Bre Bro Saint Evarzec Quimper France Tel 33 2 98946700 Top 2 30 E 2 X F Bre Bro Fax 33 2 98946911 Email contact tuffigo com Top control E 4 X F Bre Bro Web www tuffigo com Weltech 5 Stephenson Road St Ives BW 1050 10 S 1 X M Bre Bro Huntington Cambridge PE27 3WJ England 8000 10 E 2 X F Bre Bro Tel 44 1480 461611 Fax 44 1480 301010 SP 1 SP 2 10 E 1 X F Bre Bro Email sales weltech co uk Note Although much work has been done to make this list as complete as possible the author apologises for possible omissions Additions to the list are welcome and can be sent to the author by email wiebe van der sluis reedbusiness n 32 www AgriWorld n WP WORLD POULTRY Vol 19 No 6 2003 Weighing birds in cages can be
9. s according to Ken Laughlin who was with Cobb and recently joined Aviagen you have to weigh birds until the addition of one extra bird does not change the cumu Company Address PO Box 3164 5902 RD Venlo The Netherlands Tel t3177 3231200 Fax t31 77 3873 306 Email hf _electronics planet nl Web www opticon agri com Opticon Agri Systems Reliable Scale 520 Moraine Road NE Calgary Alberta T2A 2P2 Canada Tel 1 403 272 8784 Fax 1 403 273 9818 Email info reliablescale com Web www reliablescale com 23 Efal St PO Box 3392 Kiriat Arie Petach Tikva 49511 Israel Tel 972 3924 9712 Fax 972 3924 9834 Email rotemcc ibm net Web www rotem com George Street West Bromwich West Midlands B70 6AD UK Teli 4 121 553 1655 Fax 44 121 553 0494 PO Box 128 28422 Perstorp Sweden Tel 46 435 34150 Fax 46 435 34160 Email scandinavian telia com Rotem Salter Weigh Tronix Scandinavian Electronics Systems WORLD POULTRY Vol 19 No 6 2003 WP www AgriWorld nl Weigher DWS 10 DWS 20 OPT 82 OPT 83 OPT 84 OPT 85 RCS 580 RPBS 1 Model 235 6 Model 233 10 Peckode Basic Weighing System Master Weighing System LW1 Double Up Kg max N A N A 150 50 50 35 15 10 30 5 100 5 300 10 Type analogue A or electronic stand alone S or connected to computer E E modem or network E modem or network E E E E m F E antenna is optional
10. to rest Experience has taught that automatic scales are very powerful and ease the life of the farm manager when making his management decisions These automatic systems save labour and time but should not stop the farm manager from visiting the flock regularly flesh the birds and test weigh manually every now and then One can use it as a tool to provide more time for flock inspection and improve flock performance M 33
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