摘要:
This invention relates to the administration of growth hormone to a ruminant between about the onset of puberty to about first parturition, thereby increasing the quantity of mammary parenchyma, resulting in increased milk production during subsequent lactations.
摘要:
This invention provides methods for improving reproductive performance of lactating dairy cows and other mammals. The method in the case of cows comprises feeding to the cows, a composition comprising conjugated linoleic acids (CLAs), cis-9, trans-11 and trans-10, cis-12. When these CLAs are fed daily to dairy cows starting at or prior to calving, and continued after parturition, an improvement in reproductive performance is observed.
摘要:
The present invention alters mammary synthesis of fat to improve milk quality. These changes in milk composition represent improvements in nutritional quality consistent with contemporary dietary recommendations. Of special importance is the disclosure of new data relating to specific conjugated linoleic acids (CLA), potent naturally occurring anti-carcinogens. In the course of an investigation to enhance milk content of conjugated linoleic acid, it was discovered that abomasal infusion of a single TFA isomer caused a marked milk fat depression. This observation was unexpected because the prior art has consistently shown that body fat and milk fat always show reciprocal changes in lactating cows and indicated that CLA's generally reduced body fat in growing animals. The current disclosure demonstrates that an increase in milk fat content of a specific TFA isomer, trans-10 C18:1. (Griinari et al., 1997, 1998) causes MFD. This observation is in conflict with the prior art that taught that an increase in total TFA caused MFD. These results are applicable to other domestic lactating mammals (e.g., pigs). Upon the infusion of CLA, a portion of the CLA is transferred to the mammary gland and incorporated into milk fat. Hence, the methods disclosed increase the levels of CLA found in milk, thereby improving the nutritional benefits to human health associated with CLA.
摘要:
This invention provides methods for improving reproductive performance of lactating dairy cows and other mammals. The method in the case of cows comprises feeding to the cows, a composition comprising conjugated linoleic acids (CLAs), cis-9, trans-11 and trans-10, cis-12. When these CLAs are fed daily to dairy cows starting at or prior to calving, and continued after parturition, an improvement in reproductive performance is observed.
摘要:
This invention relates to deliberately increasing growth hormone in swine during the last 2 weeks of pregnancy through a 3 week lactation. This has the effect of increasing fetal energy storage during late pregnancy which resulted in the newborn piglets having marked enhancement of the ability to maintain plasma concentrations of glucose and free fatty acids when fasted after birth. Likewise, treatment of the sow during lactation results in increased milkfat in the colostrum and an increased milk yield. These effects are important in enhancing survivability of newborn pigs and weight gain prior to weaning.
摘要:
This invention provides methods for improving reproductive performance of lactating dairy cows and other mammals. The method in the case of cows comprises feeding to the cows, a composition comprising conjugated linoleic acids (CLAs), cis-9, trans-11 and trans-10, cis-12. When these CLAs are fed daily to dairy cows starting at or prior to calving, and continued after parturition, an improvement in reproductive performance is observed.
摘要:
This invention relates to deliberately increasing growth hormone in swine during the last 2 weeks of pregnancy through a 3 week lactation. This has the effect of increasing fetal energy storage during late pregnancy which resulted in the newborn piglets having marked enhancement of the ability to maintain plasma concentrations of glucose and free fatty acids when fasted after birth. Likewise, treatment of the sow during lactation results in increased milkfat in the colostrum and an increased milk yield. These effects are important in enhancing survivability of newborn pigs and weight gain prior to weaning.
摘要:
The administration of reserpine to nonlactating dairy cattle produces a marked increase in circulating serum prolactin levels. The parenteral administration of reserpine to nonlactating cows which have been hormonally induced into lactation, as by the parenteral administration of an estrogen and progesterone, and dexamethasone, results in a substantial rise in milk production.