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Farm process, production unit and/or hatchery and exporter

a) Farm, production unit     

When an exporter intends to export chicks of up to three days old to Mexico, the following must be taken into account:


The management and practices carried out in the hatchery can help to express the genetic potential of the birds, compromise it and, in the worst case, be the cause of mortality upon reaching the farm.


Correct disinfection of eggs and transport to farm


Based on the fact that the eggs come from disease-free birds, it should be verified that:

• There is frequent egg collection.

• The nests are sufficient, clean, and closed at night.

• Disinfection, regardless of the product to be used, be carried out as soon as possible.

• Eggs are stored at the correct temperature.

• The previously cleaned and disinfected truck, which transports the eggs from the farm to the plant, has a temperature equal to or less than the egg storage room on the farm.


Reception of fertile eggs and storage in plant

You must have control over the temperature of the eggs when they are lowered from the truck and mobilized inside the plant. Increases in temperature can cause eggs to "sweat". By lowering the temperature again as it enters the hatchery, pathogens on the surface of the shell can gain access to the interior of the eggs. The penetrating pathogens can generate embryonic mortality during the incubation process or be present in birds at birth and cause mortality.



The objective of preheating is to ensure that the eggs before being placed in the incubator have a similar temperature and degree of development, helping to ensure that the largest number of birds hatch at the same time and that they do not dehydrate unnecessarily in hatching machines at the same time. wait for the other birds to be ready.



Embryonic temperature is the most determining factor not only for birth but also for adequate body development and, therefore, for good survival on the farm. To determine the temperatures of temporary storage or transport, it depends on the number of pallets, ventilation / air flow, so each company / supplier must indicate the appropriate temperature. Each company indicates the desired temperature within those parameters.



Very high levels of carbon dioxide are the result of inadequate ventilation. Without a correct oxygen level in the hatcher machines, the mechanism of use of the yolk sac is compromised.



The humidity of the incubators must be such that at the time of transfer the eggs have lost about 12% of their initial weight. Very low weight losses will be reflected in small air that will cause difficulties for the birds to get out and therefore lacerations known as red elbows.


Birth window

Measuring the window of birth is a routine practice. It provides vital information on the number of total incubation hours that the eggs are demanding, since by different farm management the conductance of the shells may change and, therefore, the incubation profile that has been used successfully can now be incorrect.


Body temperature of birds in hatching machines and during storage

After the vast majority of birds have hatched, their body temperature should be measured. During the process of determining the sex and vaccination, the body temperature of the birds may drop, but in the waiting room they must recover it before being transported. Higher or lower temperatures generate large weight losses. When finished processing, the birds should be sent to the farm as soon as possible for them to eat and drink.


An unnecessary wait for birds to start feeding and drinking will only contribute to delaying intestinal development, the use of antibodies, and weight loss.


The survival of the birds upon arrival at the farm depends largely on how the environmental conditions were during the incubation.


Embryonic temperature, weight loss, hatch window or cloacal temperature are some of the necessary measurements to be carried out to guarantee the correct embryonic development and the well-being of the birds.

Belongs to the National Poultry Improvement Plan (NPIP)

  • If a farm, production unit or hatchery located in the USA is interested in exporting to Mexico, it is necessary for that plant to belongs to the National Poultry Improvement Plan (NPIP).

  • Being current with their registrations, their statement and payment of taxes before the US Government –having a Tax ID or Tax Identification Number.

  • Being located in a State that is free from diseases forbidden by Mexico, e.g. Newcastle disease or avian influenza.

  • Establish written procedures / records to provide the flock identification system and procedures to maintain the identity of eggs from the time of production, transport, storage, processing and packaging (traceability).

  • Maintain all applicable records for one year.

  • Export requirements frequently change, obtain the current export requirements from the Veterinary Services service center in your area before each shipment.

b) Inspection Stamps

  • Once the interested party belongs to the National Poultry Improvement Plan (NPIP), an authorization number will be provided, which must be printed on the boxes and / or containers of the products they export to Mexico.

  • Boxes and cases of chicks up to three days shall be marked/labeled with NPIP inspected stamp and with the establishment number, which is allocated to the plant where the product is produced/processed and it is the number identifying the plant.

  • The NPIP registration number must appear on the outside of the boxes as long as it is as present in a prominent manner, on all goods and/or cases in a legible manner and of the appropriate size ensuring good visibility and easy recognition.


c) Items that are to Be Considered for Shipment of birds up to three days of age

Upon arrival in Mexico at the OISA in question, the official personnel will physically verify the birds with the following criteria:

  • Group dynamics will be observed to verify that the animals are clinically healthy.

  • OISA staff will be able to inspect 100% of the shipment in case they detect anomalies / mortality.

  • In the event that OISA personnel detect mortality, samples will be taken and these will be sent to the official SENASICA laboratories.

  • If the laboratory results are positive for Avian Influenza, the DGSA will determine the measures to be applied.

  • The expenses that these measures cause will be borne by the importer.











Once the physical inspection is over, making sure the goods and documentation meet the established standards, the animal health certificate for importation will be issued through the VDMCE. It will be necessary the modification of the certificate in those cases where the number of animals noted does not match those physically imported. Therefore, a modification shall be requested attaching the corresponding 50% payment of government service charges receipt. See the topic: “Subdivision of Loads with Partial Rejections”.

When upon inspection dead animals are found, the following procedure shall be done:

1. In case dead birds not exceeding 2% of the total number of animals, the procedure will be as follows:

a) Five dead birds, or 10% of dead birds (whatever number is higher), shall be sent to the National Animal Health Diagnostic Services Center (CENASA), or to the lab of the Mexico-United States of America Commission for the Prevention of Foot-and-Mouth Disease and Other Diseases (CPA), as the case may be, to be subjected to necropsy and samples shall be taken for tests indicated in NOM-013-1994 Mexican Official Standard National: Campaign against Velogenic Newcastle Disease and the Agreement by which the campaign and animal health measures are made known to be applied for diagnosis, prevention, control and eradication of notifiable Avian Influenzas, in Mexican zones and territories where this disease is present, as well as the bacterial isolations to rule out Salmonella pullorum and Salmonella gallinarum.

b) Expenses incurred due to these measures shall be at the expense of the importer.

c) This procedure shall be supervised by the personnel of the Mexico-United States of America Commission for the Prevention of Foot-and-Mouth Disease and Other Diseases (CPA) or the personnel of the delegation of the Ministry of Agriculture (SADER) of the State of entry, and it shall be mutually notified.

d) The rest of the animals shall be released for their final destination where the official personnel shall establish the quarantine in the facilities previously authorized SADER’s delegation in the destination State.

e) The quarantine will be lifted once the 30 days indicated are elapsed in the applicable combination, and once the necropsy results indicate the mortality was not caused by any quarantine-related disease and that the interested party shows the payment receipts for all lab tests conducted.

2. In case the mortality exceeds 2%, all dead birds will be sampled. Additionally, 0.5% of dying animals and 0.5% of apparently healthy animals that have been together with dying and dead animals shall be sent for necropsy and tests mentioned above.

If you wish to know the format of APHIS Health Certificate for Chicks up to Three Days of Age from the United States to Mexico, you may click on the following link:


d) Exporter/Seller’s Process


i. Look for a farm, production unit or hatchery


There are few companies worldwide that dominate the world market, and they are companies that maintain a high level of biosecurity and are committed to animal welfare. So, if you want to export, we recommend that you approach one of these companies.


Look for a farm, production unit and / or hatchery that is registered in the National Poultry Improvement Plan (NPIP) and reach an agreement for the shipment of the goods that you want to export.


For more information about it, you can click on the following link:


ii. Contact a Freight Forwarder

The Freight Forwarder will manage the logistics between the client contracting him and the services involved in the transportation of goods to the destination Country.

When looking for a Freight Forwarder, it is important to evaluate the following –since on this depends, to a great extent, the speed and agility with which goods will cross to the destination Country:

  • Does he have the capacity to handle my product?

  • Does he know how to handle my product?

  • How large is his suppliers and collaborators network?

  • How is the level of communication?

  • What is his experience handling my product?

To find a Freight Forwarder in the US, you may look for one on your own, or click on the following link of the National Customs Brokers and Forwarders Association of America, Inc:


iii. Contact a Customs Broker

A Customs Broker is an individual, association or private company with a valid and regulated license by the Customs and Border Protection (CBP).

It helps importers and exporters to meet federal requirements that rule importations and exportations of goods. It provides advice to the client, keeps him informed about all the load details and is constantly in communication.

It is in charge of sending information and necessary payments to the CBP on behalf of its clients in exchange for a fee for this service.

When looking for a Customs Broker or Freight Forwarder, it is important to evaluate the following –since on this depends, to a great extent, the speed and agility with which goods will cross to the destination Country:

  • Does he have the capacity to handle my product?

  • Does he know how to handle my product?

  • How large is his suppliers and collaborators network?

  • How is the level of communication?

  • What is his experience handling my product?

There are more than 14,000 Customs Brokers in the US with an active license. To find one, you may search on your own, or you may click on the following CBP office link:

iv. Make Sure the Importer/Buyer Meets the Necessary Requirements


  • To be current with its tax obligations before the SAT (Tax Administrations Service)

  • To be registered on the SAT’s importers registry; or if using a trader, it shall be registered in the importer’s registry.

  • To have a Customs Broker in Mexico to carry out the importation of goods.


v. Documentation necessary for the purchase-sale, transfer and arrival of the goods to the destination country.


  • It is important to create an international agreement for the sale of goods between the supplier in the US and the buyer in Mexico (preferably in one single language for both parties) in order to set forth rights, obligations, price, INCOTERMS® (international terms of trade) and taking care of transaction legal aspects.

  • Creating a file containing documents that have been exchanged between buyer and seller, emails, notes, faxed letters, etc. in order to have a backup on the negotiations carried out.

  • Packing list.

  • Commercial invoice.

  • Origin health certificate for exportation.

  • Shipper Export Declaration Form.

  • Certificate of origin, it is a “Self-Certification” scheme, it is no longer carried out by an authority.


IMPORTANT: For the purposes of obtaining preferential tariff treatment from the T-MEC (Treaty between Mexico, the United States and Canada) the invoice of the goods can present the certification and must contain at least the following information:


vi. Sanitary provisions and specifications


a) Official Mexican Standard NOM-054-ZOO-1996 Quarantine establishments for animals and their products


If you want to know the publication of the D.O.F. of NOM-054-ZOO-1996 you can click on the following link:


b) Mexican Animal Health Requirements to Allow the Importation of chicks up to 3 Days old in Accordance to SENASICA.

According to the product to be imported (Chicks up to three days old), the importer must review and comply with the combination of current requirements (at the time of its introduction into the national territory) established in the MCRZ WARNING: The exporter and importer must check the last version/ updated Zoosanitay requirements sheet (HRZ) before sending the shipment to the border in the following link https: //sistemasssl.senasica.gob .mx / mcrz / moduloConsulta.jsf


For chicks up three days old use the combination 004-09-503-USA-USA

Example of the requirements to be met by the importer:

Review the current Zoosanitary Requirements Sheet on the day of your consultation.


Submission of an official Health Certificate issued by the corresponding authority of the Country of Origin (for example. USDA) indicating:

1.- Exporter and importer’s name and address.

2.- That the goods originate from the Country indicated on the document under origin.

3.- That eggs come from zones and/or flocks which are Mycoplasmosis free.

4.- That the goods come from flocks and hatcheries located in zones meeting the recommendations of the Terrestrial Animal Health Code of the World Organization for Animal Health (OIE) to be considered free from velogenic Newcastle disease in poultry and commercial birds; and: a) they have not been in contact with poultry products from any zone or region where there is Newcastle disease; and b) they have not transited through a zone or region considered to have presence of Newcastle disease, unless movement is directly through the region in a sealed transportation with an intact seal upon arrival to destination; or c) The birds come from a farm that have a monitoring program of 35 birds that began after the 18 weeks of age, using viral isolation tests and velogenic strain identification through the Intracerebral Pathogenicity Index test in one-day chicks, and carried out every three or four months, testing negative for velogenic Newcastle disease. At least 10 samples shall be alive birds or samples taken from the trachea, lung, spleen, brain or cecal tonsils, and the rest (25) may be tracheal and cloacal swabs; resampling may be also with 35 tracheal or cloacal swabs.

5.- They come from a country, state, region, farm, production unit and/or hatchery free from salmonellosis (Salmonella pullorum and S. gallinarum).

6.- That birds come from flocks of origin farms where at least 59 serum samples were taken that were tested for Avian Influenza, using the double Agar Gel Immunodiffusion (AGID) or ELISA test in accordance to the World Organization for Animal Health (OIE) guidelines, and which tested negative for Avian Influenza; or that the origin flock or farm is registered in the National Poultry Improvement Plan.

7.- That eggs from which birds come from were disinfected in the origin farm and packaged in new cardboard boxes.

8.- The birds were transported in vehicles and containers that have been cleaned and disinfected prior to shipment.

9.- That birds were transported in vehicles and containers strapped from the farm or incubator to the point of entry into Mexico.


10.- That the birds are eligible to be freely transported and marketed within the Country of origin.

Other requirements to be met at the Agricultural Health Inspection Office (OISA) upon presentation of the shipment:


11.- The Official of Agricultural, Livestock, Aquaculture and Fisheries Health (OSAAP), will carry out the documentary verification and physical inspection of the shipment.


12.- The importer must indicate in writing and under protest to tell the truth the specific destination and use of the merchandise.


13.- Upon entering the country, the birds will be transported in vehicles or strapped containers to their destination and will be kept in quarantine for 30 days considering what is stated in the Official Mexican STANDARD NOM-054-ZOO-1996, Establishment of animal quarantines and its products, except for the obligation to present the authorization issued by the State Delegation. The conditions of the Standard may be verified by the Secretariat. In case of illness or death of any of the animals during the quarantine, the numbers 5905 1000 ext. 51235 and 51242.


14.- The shipment and / or documentation of imported products must comply with the provisions established in the Federal Animal Health Law, articles 24, 32 and the fractions of article 89 that are applicable according to the nature of the merchandise.


15.- Compliance with the provisions of this document does not exempt the importer from presenting documents, complying with the procedures and / or procedures required by other authorities.




16.- The national mobilization must be carried out based on the provisions of the Agreement by which the campaign and the zoosanitary measures to be applied for the diagnosis, prevention, control and eradication of Notifiable Avian Influenza in the areas are announced on Mexican territory.


17. As of September 1st, 2013, the animal health certificate of origin shall include the following: Indicating the number of approval in the National Poultry Improvement Plan (NPIP) for the farm and/or the hatchery where birds come from.





c) Inspection Procedure for live animals in accordance to SENASICA’s Commercial Guide

Procedure for chicks up to three days old of age.


1. SENASICA may grant the inspection service outside of OISA’s regular working hours, previously requesting and paying for the extraordinary service (given the nature of the goods).

2. Given the temperature conditions of warehouses or inspection sites, as well as the packaging, SENASICA may seek at all times to expedite the inspection time, since extreme temperatures increase birds’ mortality rate.

3. Have the necessary support material for the physical inspection; if necessary, the importer may bring in clean containers for handling the birds.

Phase I Documentary review


  1. The user must capture data and attach documents of the merchandise to be imported according to what is indicated in the combination of animal health requirements corresponding to the country of origin and provenance.

  2. When the birds originate from the United States of America, the information of the USDA "Addendum" is reviewed, which must present in the upper right corner the CZI or (CSO) folio according to the nomenclature listed in DIPAF Information Notes 201/2014, 155/2020 and 158/2020 (Annex 19).

    Note: You can consult the CZE's with digital signature on the following page:


Phase II Physical inspection

  1. Once the documentary review has been established, the user must request the physical inspection through the VDMCE indicating the date and time, must present and deliver to the OISA staff the original documents indicated in the combination of animal health requirements for importation.

  2. OISA personnel must verify the identification of all boxes, and the labeling must contain: the destination address of the merchandise, for shipments of origin United States of America, when the destination does not coincide with that indicated in the CZE and provided that the entire shipment has the same destination; The interested party may present a letter of commitment in which, in protest of telling the truth, they declare the specific destination of the shipment, as well as the amount that must arrive (Guide number, CZE number and NPIP For shipments that the merchandise will have as destination more than one domicile in Mexico, it is required that each request be accompanied by the corresponding sanitary export certificate to process the CZI. (see annex 60).

  3. Observe the group dynamics to verify that the animals are clinically healthy (that they are not sad, down, etc.).

  4. If there is mortality, OISA will proceed to check 100% of the containers where the animals come from and verify the total percentage of dead birds.  

  5. Check boxes or containers for diarrheal secretions.

  6. Randomly inspect birds individually, preferably in the following order:

    a. Head. Examination of nostrils, tongue and eyes, looking for the presence of alterations, or signs of disease.
    b. Cloacal examination, without evidence of diarrhea and/or blood. 
    c. When at the time of physical inspection dead birds are found, proceed according to DGIF Information Note 202/2019, see Annex 55.

  7. Once the physical inspection is completed, corroborating that the merchandise and documents comply with the established regulations, the Animal Health Certificate for Importation (CI) is issued at the VDMCE; it is necessary to modify the Certificate in those cases where the number of animals captured does not coincide with those physically imported, for which reason a modification must be requested, attaching the corresponding payment of duties for 50%, see the topic "Subdivision of shipments with partial rejections". 


vii. List of documents to verify




Most Commonly Used SENASICA’s Sanitary Combinations with the Applicable Tariff Classifications

Senasica's sanitary combination as well as the corresponding tariff number must be determined by your customs agent. This is an example and is added for illustrative purposes.

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