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Currently, approximately 20,000 buffaloes are raised in Romania, of which 11% are found in the Făgăraș area. The present study was carried out to estimate the capacity of milk synthesis by 205 buffaloes cows raised in this area, which achieved 1059 lactations, with the rank of lactations from 1 to 14, in an observation interval of 15 years, by determining the correlation between the indicators of milk production and reproduction (lactation duration, total amount of milk of a lactation, total amount of fat, total amount of protein, interval between calvings and service period). The variability analysis shows a lack of homogeneity of the milk production and reproduction characteristics, regardless of the lactation rank, their average being moderately representative, except for the interval from calving to the fertile mount where the average is not representative. Reducing the variability of milk production and reproduction indicators can be achieved over time through management. Increasing the potential of milk production, in buffaloes cows, can be done through a simultaneous selection that takes into account the duration of lactation, the milk production from the control days and the service period. Based on the correlation between some measurable indicators of the synthesis potential of milk, the value of other characteristics of milk production can be predetermined. [ABSTRACT FROM AUTHOR]

Large calving intervals in water buffalo cows is attributed to the existence of periods of the year when sexual activity is absent. It is considered that if fertilization did not occur before the buffalo cows entered in the winter season, when kept indoors, then it will take a significant longer time until they enter again in heat and the calving interval will be negatively influenced. The work was conducted over 4 years and consisted of the evaluation of ovarian response following administration of a prostaglandin hormone (PGF2α) during the winter period for a number of 61 buffalo cows, between 5 and 14 years of age. In 22 buffalo cows that showed oestrus within 5 days of PGF2α administration, two artificial inseminations were performed at 12 hours intervals. In 39 buffalo cows that did not show any signs of oestrus, a second dose of PGF2α was administrated 11 days after the first administration, after which they were artificially inseminated at 48 and 78 hours, respectively. Of the 22 buffalo cows that showed oestrus, 19 cows became pregnant, and out of the 39 buffalo cows with prolonged treatment, only 20 heads remained pregnant. The treatment of sexual inactivity in water buffalo cows during indoor hosing by hormonal methods with PGF2α leads to the shortening of the calving interval, the cost of hormonal treatments being balanced by the increase in the number of calves obtained and the milk production. [ABSTRACT FROM AUTHOR]