Global ETD Search
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Showing 1 to 3 of 3 for “"boar exposure"”.
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Managing the lactating sow to stimulate lactation ovulation
… lactation housing; and fence, or full physical, boar exposure. The importance of a reduced suckling input was demonstrated in Chapter Two. The proportion of sows expressing a lactation oestrus increased as the number of piglets weaned on day 18 of lactation increased from zero, three, five to …
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Management and nutrition of the replacement gilt.
… the effects on puberty attainment of commencing boar exposure at 161, 182 or 203 days of age, and the effect of first mating gilts at either the pubertal or second oestrus on ovulation rate and early embryo survival. Gilts were artificially inseminated at the allocated oestrus, with the …
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Melatonin administration during the follicular phase and early pregnancy to minimize seasonal infertility in swine
… breeder, its ancestor, the European wild boar, and other well characterized seasonal species, breed seasonally in response to changing photoperiod and hot temperature. Perception of photoperiod through the pineal gland alters patterns of melatonin which modulate the hypothalamic-pituitary …