Lysine Requirement for Reproduction in Swine
نویسندگان
چکیده
منابع مشابه
Tryptophan requirement for reproduction in swine.
Twenty-five crossbred gilts were used in an experiment to determine the tryptophan (Trp) requirement for reproduction. L-tryptophan was added to a fortified corn-gelatin diet to attain the five Trp levels of .64, 1.04, 1.44, 1.84 and 2.24 g per day. These diets were fed at 2 kg daily during pregnancy I and 1.82 kg daily during pregnancies II and III. During each 3-week lactation, all animals we...
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Probably due to methodological problems the knowledge about the AA requirement for maintenance in pigs is rather scarce. In the present study an alternative experimental approach was applied and its underlying hypothesis was tested, whether protein retention decreases with body weight (BW), when daily lysine intake remains constant and acts as the limiting factor for protein retention, and whet...
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and ADFI at week 4 (P = 0.02). During phase 2 (week 3 to 4), greater ADG (P = 0.05) and ADFI (P = 0.004) were observed in pigs consuming a diet containing DDGS (Treatments B and D) compared to pigs that did not receive DDGS in phase 1 (Treatments A and C); however, G:F ratio was not affected by DDGS. There was a lactose effect on ADG in week 3 (P = 0.05) and a trend of lactose effect on ADG dur...
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If gilts are known to be cyclic, the options to control estrus are breed-and-abort or feeding allyl trenbolone (Regumate®). For breed and abort, terminate pregnancy 25–30 days postbreeding with two injections of prostaglandin F2a (PGF2a), 6–8 hours apart. Gilts should return to estrus within 4–6 days with normal fertility. When feeding allyl trenbolone, you must ensure individual feeding so tha...
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Some reproductive failure occurs in all swine breeding operations, but for practical purposes reproductive failure is regarded significant only when production levels fall below the expected norm. These norms may vary from operation to operation and are based on such things as percentage of animals cycling, conception and farrowing rates, average litter size and number of pigs produced per sow ...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 1976
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas1976.421114x