A neck rail (142, 242, 42) system is provided for an animal stall. The neck rail (142, 242, 42) has first and second end segments (152, 52) defining a common axis (58) and a middle segment having a neck-receiving portion which is offset from the common axis (58) and which accommodates the neck of an animal. First and second receivers (44) are mounted on the sides of a stall In and are adapted to receive the first and second end segments (152, 52) of the neck rail (142, 242, 42). At least the first receiver (144, 44, 46) and the first end (150, 154, 50, 54) segment of the rail are provided with complementary locking formations which can be brought into and out of engagement by axial displacement, and which locking formations prevent angular rotation of the neck rail (142, 242, 42) relative to the first receiver (144, 44, 46) when engaged with one another. At least a portion of the neck rail (142, 242, 42) is resiliently flexible, permitting it to be flexed to increase or decrease the distance between the end segments (152, 52) for axial engagement with the receivers (44). In use a flexing force may be applied to the neck rail (142, 242, 42) to reduce the distance between the first and second ends sufficiently to permit them to be inserted in the first and second receivers (44) respectively, and the flexing force removed permitting the first and second ends to axially displace into the first and second receivers (44) respectively and thereby engage said complementary locking formations.L'invention concerne un système de contention avant (142, 242, 42) pour une stalle d'animal. La contention avant (142, 242, 42) comporte des premier et second segments d'extrémité (152, 52) définissant un axe commun (58) et un segment intermédiaire comprenant une partie de réception de cou qui est décalée par rapport à l'axe commun (58) et qui reçoit le cou d'un animal. Des premier et second récepteurs (44) sont montés sur les côtés d'une stalle et sont conçus pour recevoir les premier
