02260naa a2200229 a 450000100080000000500110000800800410001902400540006010000190011424500990013326000090023250000250024152015680026665000170183465000260185165000100187765000100188765000170189765300300191470000210194477300650196515224372024-01-05       1984    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/0304-3762(84)90035-X2DOI1 aSYNNOTT, A. L.  aInfluence of social interaction between rams on their serving capacity.h[electronic resource]  c1984  aShort Communication.  aAbstract: The experiment was designed to test the hypothesis that social interaction between rams influenced their serving capacity and modified their preference for ewes. The serving capacity and the preference for particular ewes was recorded on the first and seventh day of joining in 8 rams mated either individually or in pairs to 12 oestrous ewes. The serving capacity (mean number ejaculates/hour) was 50% lower in both dominant and submissive rams when working together compared with single-sire matings. However, when working together, 33% of the available ewes were served by the submissive ram and 12.5% were served by the dominant ram so that, in total, more ewes were served (total mean number ± SE of ewes served/ram when mated either individually or as a pair = 4.50 ± 0.89 and 5.50 ± 0.57, respectively). This resulted from a modification in ewe preference by the submissive ram. In the absence of competition, the same ewes were observed to be preferred by most rams. This ewe ?attractiveness? was found not to be a permanent characteristic, as the preferred ewes at one oestrus were not necessarily those most preferred at a subsequent oestrus. Ram-grouping for experiment 1; Criteria used for recording of mating behaviour for experiment 2; Ram combinations for experiment 1; Mean number ejaculates/h (+ou- SE) of (a) dominant and (b) submissive rams when fresh or continually mated, and mated individually or as a pair; Number of ewes served by (a) dominant and (b) submissive rams continually mated and presented individually or as a pair.  aReproduction  aReproductive behavior  aSheep  aOvino  aReprodução  aComportamento reprodutivo1 aFULKERSON, W. J.  tApplied Animal Ethologygv. 11, n. 3, p. 283-289, Apr. 1984.