Washburn K W, Peavey R, Renwick G M
Poult Sci. 1980 Nov;59(11):2586-8. doi: 10.3382/ps.0592586.
The response to controlled heat stress and its relationship to blood pressure of chickens differing in body weight and subjected to feed restriction were studied. The genetic variation in body weight associated with strain differences was not related to variation in blood pressure. Blood pressure of the large weight strain was significant reduced when body weight was reduced by restriction of feed consumption, while a similar body weight reduction in a slower growing strain did not result in a decreased blood pressure. The resistance to heat stress of the strains selected for growth was significantly less than that of a slow growing randombred control strain. Restriction of feed consumption of the growth selected strains so that body weights were drastically reduced resulted in a significantly increase in resistance to heat stress.
研究了体重不同且限饲的鸡对控制性热应激的反应及其与血压的关系。与品系差异相关的体重遗传变异与血压变异无关。当通过限制采食量降低体重时，大体重品系的血压显著降低，而生长较慢的品系体重有类似程度的降低时，血压并未下降。选择用于生长的品系对热应激的抵抗力明显低于生长缓慢的随机交配对照品系。对选择用于生长的品系限制采食量，使体重大幅降低，导致对热应激的抵抗力显著增加。
