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Influence of light and photoperiodicity on pig prolificacy.
Journal of reproduction and fertility. Supplement, 1986In the wild pig mating activity is seasonal. The main breeding period is in late autumn but a second period may occur around April. It is known from other species that seasonal variations in breeding activity are mainly regulated by photoperiod. In the domestic pig seasonal influences on prolificacy still exist: for example, AI boars not only show ...
R, Claus, U, Weiler
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Genetic basis of prolificacy in Meishan pigs.
Journal of reproduction and fertility. Supplement, 1994Research in France and in the UK confirms the prolificacy of the Chinese Meishan breed to be about three to four piglets greater than that of control Large White females. Crossbreeding studies clearly indicate that this breed difference is due to genes acting in the dam and not in the litter itself. There is high heterosis for litter size in F1 Meishan
C S, Haley, G J, Lee
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Influence of environmental temperature on prolificacy of pigs.
Journal of reproduction and fertility. Supplement, 1986Exposure of male and female pigs to elevated ambient temperatures can result in reduced reproductive efficiency. When boars and gilts are exposed to heat stress, respiratory rates increase to enhance evaporative cooling because minimal sweating occurs. During early pregnancy, gilts are especially susceptible to heat stress.
R P, Wettemann, F W, Bazer
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Invited review: Opportunities for genetic improvement toward higher prolificacy in sheep
Small Ruminant Research, 2020Elisha Gootwine
exaly
A new allele in the gene ( that affects prolificacy co-segregates with and in Rasa aragonesa sheep
Theriogenology, 2020José Luis Alabart +2 more
exaly
The prolificacy markers in Olkuska sheep
Reproductive Biology, 2013Urszula Kaczor +2 more
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