Rigby C E, Pettit J R
Can J Comp Med. 1981 Oct;45(4):363-5.
The withdrawal of feed from the pens of broiler chickens for several hours before they are shipped for slaughter is an increasingly common practice, whose objective is to decrease fecal contamination of birds during processing. In this study, Salmonella typhimurium-infected market age broiler chickens were subjected to feed withdrawal for eight hours, then placed in crates for 18 hours before they were killed and weighed. The intestines, ceca, and cloacal feces were weighed and cultured for salmonellae. The feces deposited in the crates were also weighed and cultured. The results were compared with those of control birds whose feed was not withdrawn before they were placed in crates. The withdrawal of feed did not significantly affect the total liver weights of the birds, but reduced the weights of the intestines in 7/10 groups, and of the ceca in 5/11 groups, and dramatically reduced the amount of feces deposited in the crates. There was no consistent effect on excretion of salmonellae. These results indicated that feed withdrawal for eight hours before broilers are shipped for slaughter should be effective in reducing the spread of fecal contamination and of salmonellae during transport and processing, and in improving the effectiveness of crate washing procedures.
在肉鸡运往屠宰场之前，将其从鸡舍中停喂数小时是一种越来越普遍的做法，其目的是减少加工过程中禽类的粪便污染。在本研究中，将感染鼠伤寒沙门氏菌的上市日龄肉鸡停喂8小时，然后装入板条箱18小时，之后宰杀并称重。对肠道、盲肠和泄殖腔粪便进行称重，并培养沙门氏菌。对板条箱中沉积的粪便也进行称重和培养。将结果与未在装入板条箱前停喂的对照鸡的结果进行比较。停喂饲料对鸡的肝脏总重量没有显著影响，但在10组中有7组降低了肠道重量，在11组中有5组降低了盲肠重量，并显著减少了板条箱中沉积的粪便量。对沙门氏菌的排泄没有一致的影响。这些结果表明，肉鸡在运往屠宰场之前停喂8小时应能有效减少运输和加工过程中粪便污染和沙门氏菌的传播，并提高板条箱清洗程序的有效性。
