Effects of amount of whole cottonseed on intake, digestibility, and physiological responses of dairy XXXX .

@entity6319 @entity137 @entity291 @entity460
In Experiment 1, 27 lactating @entity291 were fed complete rations ad libitum of 0, 15, and 30% whole cottonseed to examine the effects on intake, digestibility, blood gases, and blood metabolites. Dry matter intake declined linearly with increased cottonseed, but because of greater energy density, calculated net energy for lactation intake was not depressed significantly. Ether extract, crude protein, and @entity460 digestibility increased with cottonseed in the diet. Respiration rates declined with dry matter intake and increased cottonseed feeding; some blood gases were influenced by cottonseed feeding but not in a detrimental way. No data among 13 blood metabolites indicated effects of @entity6319 @entity137 with 30% whole cottonseed in the diet. In Experiment 2, 24 dry, nonpregnant Holstein @entity291 were offered complete rations ad libitum of 15, 35, and 55% whole cottonseed to measure responses in intake, respiration rates, and blood metabolites. The highest cottonseed diet significantly depressed intake of both dry matter and calculated net energy for lactation. Maximum dry matter from cottonseed eaten by an individual was 8.4 kg/d (average for 1 wk). Respiration rates declined parallel to intake. No evidence for @entity6319 @entity137 was seen among data of 11 metabolites in blood.
