pulp. The type of fruit processed, i. e., grapefruit, oranges, tangerines, 

 lemons or seedless navels, affects the composition. The growing season 

 as well as the variety of fruit also affects the product. For these reasons 

 the analysis on the bag tag is an important consideration in feeding dried 

 citrus pulp. 



While the dried citrus pulp is quite palatable to cows, its use is limited 

 in that its composition is somewhat like that of a concentrated carbohydrate 

 feed such as corn. That is, it is high in carbohydrate and total digestible 

 nutrients, but low in protein. Many feeding experiments and a lot of 

 practical experience have shown that dried citrus pulp is a satisfactory 

 feed for dairy cattle. About the only work to determine the digestibility 

 of citrus pulp by cattle appears to have been carried out at the Florida 

 Station by Neal and associates. The work reported here was carried out 

 for that purpose as well as to determine its value as an ingredient in the 

 concentrate mixture. 



Digestion and Utilization Study 



Experimental Procedure 



The dried citrus pulp was evaluated in digestion and utilization studies 

 carried out in the Animal Metabolism Laboratory of the Department of 

 Dairy Husbandry of the New Hampshire Agricultural Experiment Sta- 

 tion. Four 18-24 month old dairy heifers were used as experimental sub- 

 jects. In order to evaluate dried citrus pulp under typical feeding condi- 

 tions four different rations were fed. During the course of the experiment 

 each ration was evaluated with each animal. The rations studied were 

 hay alone, hay plus dried citrus pulp (50-50), hay plus a 14 percent pro- 

 tein concentrate mixture (50-50). and hay plus 20 percent protein con- 

 centrate mixture and dried citrus pulp (50-25-25). The citrus pulp was 

 fed with the 20 percent protein grain mixture because the protein content 

 of the mixture would be approximately the same as that of the 14 percent 

 mixture. 



The hay fed was grass hay of average quality. The citrus pulp was a 

 blend of pulps produced by members of the Citrus Processors Associa- 

 tion. The concentrate mixtures are given in Table 1. The chemical com- 

 position of the various feeds used is given in Table 2. 



Table 1. Poonds of Concentrate Mixtures Used 



