Corpus ID: 51680907

The replacement gilt: Current strategies for improvement of the breeding herd

  title={The replacement gilt: Current strategies for improvement of the breeding herd},
  author={Martyna M Małopolska and Ryszard Tuz and Barry D. Lambert and Jacek Nowicki and Tomasz Schwarz},
  journal={Journal of Swine Health and Production},
The efficiency of swine production is affected by many factors. One of the most economically important factors is gilt reproductive performance. To achieve satisfactory results in breeding, both environmental and genetic factors must be monitored and constantly improved. For many years, intensive selection in the swine industry for increased carcass muscle to fat ratio has led to deterioration in some reproductive traits (eg, less favorable development of the reproductive system in gilts… 
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Current strategies for reproductive management of gilts and sows in North America
Ovulation synchronization, single fixed-time AI and induced parturition may lead to farrowing synchronization, which facilitates supervision and reduces stillbirths and piglet mortality.
Gilt development and mating in commercial swine herds with varying reproductive performance.
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The effect of the growth rate and meatiness of young gilts during rearing on the growth and development of their reproductive system
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Effective gilt management programs that will meet replacement targets from a smaller pool of gilts with improved lifetime breeding performance (select gilts) are urgently needed. By making gilt
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Female swine were significantly more likely to exhibit lower rates of successful breeding during their first four breeding attempts if they had been born in a male-biased litter, which has implications for swine producers deciding which gilts to keep and which to market.
The use of performance test parameters for selection of gilts before their placement into breeding
Evaluating carcass value in reared gilts on the basis of car - cass analysis during the station test of purebred progeny of pigs and ultrasonically with SoNoMARK-100 or PIGloG-105 instruments to verify a possibility of prediction of backfat thickness and/or average daily weight gain since birth and lean meat content of gilts as the elements of objectification for the evaluation of their body condition.
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