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Guo Y, Wang F, Mao Y, Kong W, Wang J, Zhang G. Influence of Parturition on Rumen Bacteria and SCFAs in Holstein Cows Based on 16S rRNA Sequencing and Targeted Metabolomics. Animals (Basel) 2023; 13:782. [PMID: 36899639 PMCID: PMC10000066 DOI: 10.3390/ani13050782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/06/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
The rumen fluids from ten cows at Day 3~5 before calving and Day 0 after calving were collected to analyze the composition and quantity of bacterial communities and concentrations of SCFAs. The results showed that the relative abundances of unidentified Lachnospiraceae, Acetitomaculum, Methanobrevibacter, Olsenella, Syntrophococcus, Lachnospira, and Lactobacillus genera were significant increased (p < 0.05), while that of unidentified-Prevotellaceae was notably decreased after calving (p < 0.05). In addition, the concentrations of acetic acid, propionic acid, butyric acid, and caproic acid obviously decreased after calving (p < 0.01). Our findings show that parturition altered the rumen microbiota and their fermentation ability in dairy cows. This study defines a rumen bacteria and metabolic profile of SCFAs associated with parturition in dairy cows.
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Affiliation(s)
- Yansheng Guo
- College of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Feifei Wang
- College of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Yongxia Mao
- College of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Weiyi Kong
- College of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Jiandong Wang
- Institute of Animal Sciences, Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan 750002, China
| | - Guijie Zhang
- College of Agriculture, Ningxia University, Yinchuan 750021, China
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Chen Z, Luo J, Zhang C, Ma Y, Sun S, Zhang T, Loor JJ. Mechanism of prolactin inhibition of miR‐135b via methylation in goat mammary epithelial cells. J Cell Physiol 2017; 233:651-662. [DOI: 10.1002/jcp.25925] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/18/2017] [Accepted: 03/20/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Zhi Chen
- Shaanxi Key Laboratory of Molecular Biology for AgricultureCollege of Animal Science and Technology, Northwest A&F UniversityYang lingShaanxiPR China
| | - Jun Luo
- Shaanxi Key Laboratory of Molecular Biology for AgricultureCollege of Animal Science and Technology, Northwest A&F UniversityYang lingShaanxiPR China
| | - ChangHui Zhang
- Shaanxi Key Laboratory of Molecular Biology for AgricultureCollege of Animal Science and Technology, Northwest A&F UniversityYang lingShaanxiPR China
| | - Yue Ma
- Shaanxi Key Laboratory of Molecular Biology for AgricultureCollege of Animal Science and Technology, Northwest A&F UniversityYang lingShaanxiPR China
| | - Shuang Sun
- Shaanxi Key Laboratory of Molecular Biology for AgricultureCollege of Animal Science and Technology, Northwest A&F UniversityYang lingShaanxiPR China
| | - Tianyin Zhang
- Shaanxi Key Laboratory of Molecular Biology for AgricultureCollege of Animal Science and Technology, Northwest A&F UniversityYang lingShaanxiPR China
| | - Juan J. Loor
- Mammalian Nutrition Physiology GenomicsDepartment of Animal Sciences and Division of Nutritional Sciences, University of IllinoisUrbanaIllinois
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Stark A, Wellnitz O, Dechow C, Bruckmaier R, Baumrucker C. Colostrogenesis during an induced lactation in dairy cattle. J Anim Physiol Anim Nutr (Berl) 2014; 99:356-66. [PMID: 24828984 DOI: 10.1111/jpn.12205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 04/17/2014] [Indexed: 01/08/2023]
Abstract
Colostrum immunoglobulin G (IgG) is of major importance for the newborn calf because epitheliochorial placentae do not provide transport in utero. The formation of colostrum occurs in the later stages of pregnancy. Our objectives were to induce lactation in non-pregnant dairy cows and (i) to determine the changes of IgG in serum and mammary secretions during the induction process and (ii) to establish α-lactalbumin (αLA) and prolactin (Prl) alterations to monitor the changing mammary epithelial tight junction status and development pattern. Estradiol-17β (E2) and progesterone (P4) injections in a 1-7 days series were combined with a 3-day injection series (day 21-23) of dexamethasone (DEX). Blood and both front quarter secretion samples were collected daily. Milking started 24 days after the start of the experiment. Results show that the mammary secretory IgG1 was increased at >7 days after the start of steroid injections and depicted a bimodal pattern reaching a high of 16 mg/ml at 21 day compared with 3.2 mg/ml in the serum. There was a small increase in secretory IgG2 that did not correlate with tight junction status, but never reached the serum concentration. The injections of DEX resulted in constriction of tight junctions. Secretory αLA was immediately increased with steroid injections, dropped precipitously after 7 days and then began a steady increase until the start of milking. Changes in serum αLA are related to mammary tight junctions while serum Prl gradually increased from 30 to >60 ng/ml after the steroid injections stopped. These results provide insights into the mechanisms and timing of colostrogenesis during an induced lactation protocol.
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Affiliation(s)
- A Stark
- Veterinary Physiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Mellado M, Avila N, Garcı́a E. Estrous synchronization with norgestomet and estradiol valerate at the end of lactation accelerates drying off in goats. Small Rumin Res 1998. [DOI: 10.1016/s0921-4488(98)00107-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Byatt JC, Sorbet RH, Eppard PJ, Curran TL, Curran DF, Collier RJ. The effect of recombinant bovine placental lactogen on induced lactation in dairy heifers. J Dairy Sci 1997; 80:496-503. [PMID: 9098799 DOI: 10.3168/jds.s0022-0302(97)75962-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The primary objective of this study was to determine whether bovine placental lactogen stimulated additional mammary growth as assessed by milk yield from a lactation induced by steroids. Pubertal, nonpregnant Holstein heifers (n = 23) were given daily subcutaneous injections of estradiol-17 beta (0.05 mg/kg) and progesterone (0.25 mg/kg) for 7 d to initiate mammary growth. Prolactin secretion was suppressed in all heifers via bromocriptine, which was administered until d 15. Heifers were treated with either placental lactogen (40 mg/d; n = 12) or water (control group; n = 11) for 18 d. Lactation was induced by daily injection of dexamethasone for 3 d and twice daily injections of recombinant bovine prolactin for 5 d starting on d 18. From 3 to 8 wk of lactation, milk yield of heifers treated with placental lactogen was numerically higher (22%) than the yield of control heifers, but the difference was not significant because of the high coefficient of variation. Daily injection of bovine somatotropin (d 57 to 66 of lactation) increased milk yield of both groups and stimulated a greater numerical increase in milk yield for heifers that were treated with placental lactogen. These results support the hypothesis that bovine placental lactogen is mammogenic and is one of the factors that regulates mammary growth during pregnancy.
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Affiliation(s)
- J C Byatt
- Protiva, A Unit of Monsanto Company, St. Louis, MO 63198, USA
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McFadden TB, Akers RM, Beal WE. Milk protein secretion by explants of prepubertal bull mammary tissue: breed differences. J Dairy Sci 1988; 71:2904-14. [PMID: 3230183 DOI: 10.3168/jds.s0022-0302(88)79888-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Production of milk proteins in response to hormonal stimuli was studied in organ culture of mammary tissue from prepubertal Angus or Holstein bulls. Bulls were injected with estradiol and progesterone for 7 d and slaughtered on d 15. Mammary tissue explants were cultured for 96 h in basal medium containing insulin, hydrocortisone, and triiodothyronine or in stimulatory medium, further supplemented with prolactin. Selected cultures were incubated in the presence of [3H]-amino acids. Content of alpha S1-casein in cultures from Angus bulls was increased 3-fold in medium, and 6-fold in explant homogenates, relative to cultures from Holstein bulls. Concentration of 3H-labeled protein was greater in medium (2.3-fold) of Angus versus Holstein cultures. Overall, alpha-lactalbumin content in medium and homogenates tended to be higher in Angus cultures. Prolactin increased alpha-lactalbumin and casein in medium, and alpha-lactalbumin and [3H]-protein in homogenates. We conclude that mammary tissue of immature bulls can be induced to produce milk proteins and that prolactin enhances production. Genetic (breed) differences in responses were observed, although the greater productivity of explants from Angus compared with explants from Holstein bulls was unexpected. Nevertheless, use of measurements such as these may provide data for sire selection.
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Affiliation(s)
- T B McFadden
- Department of Dairy Science, Virginia Polytechnic Institute and State University, Blacksburg 24061-0315
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Akers RM. Lactogenic hormones: binding sites, mammary growth, secretory cell differentiation, and milk biosynthesis in ruminants. J Dairy Sci 1985; 68:501-19. [PMID: 3886733 DOI: 10.3168/jds.s0022-0302(85)80849-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Roles of the lactogenic hormones prolactin and placental lactogen in mammary development in ruminants were reviewed. In contrast with other ruminants, failure to detect lactogenic activity in the serum of pregnant cows (in excess of that attributed to prolactin) suggests that placental lactogen may have little direct effect on mammary growth or lactogenesis. However, replacement and ablation experiments using ergocryptine provide definitive evidence that increased periparturient secretion of prolactin is necessary for maximal milk production in cattle. Quantitative microscopy indicates a relative failure of mammary cells in cows with inhibited secretion of prolactin to differentiate structurally. Prolactin induces synthesis and secretion of alpha-lactalbumin in prepartum bovine mammary tissue. Temporary disruption of mammary microtubules immediately prepartum in pregnant heifers reduced subsequent milk production, biosynthetic capacity, and cellular differentiation. For maximal milk production, mammary secretory cells apparently must respond to lactogenic hormone stimulation during the immediate periparturient period. Colchicine may desensitize the mammary epithelium to prolactin action. Membrane binding of radiolabeled human growth hormone to ruminant mammary gland provides a measure of lactogenic hormone binding sites. Specific binding to 600 micrograms of mammary membrane protein was 296% greater in lactating, compared with nonlactating, pregnant (65 days of gestation) ewes. Binding capacity (fmol/mg membrane protein) averaged 275 +/- 57 in mammary membranes from nonlactating, pregnant ewes (100 days gestation, n = 2) and 2,325 +/- 521 in mammary membranes from lactating ewes (n = 6, 14 to 21 days postpartum). Greater understanding of hormonal regulation of the ruminant mammary gland likely will result in development of techniques to produce milk more efficiently and perhaps capability to evaluate production potential of young animals.
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Head HH, Chakriyarat S, Thatcher WW, Wilcox CJ, Becker HN. Induction of lactation: comparison of injections of estradiol-17 beta and progesterone for 7 or 21 days on prolactin response to thyrotropin releasing hormone and milk yield in dairy cattle. J Dairy Sci 1982; 65:927-36. [PMID: 6286741 DOI: 10.3168/jds.s0022-0302(82)82293-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Subcutaneous injections of estradiol-17 beta and progesterone (.10 and .25 mg/kg of body weight) for 7 (group I) or 21 (II) days were used. Dexamethasone (.028 mg/kg of body weight per day) or adrenocorticotropin (200 IU per day) was injected into cows in each group on days 18 to 20 (I) or 32 to 34 (II). Additionally, 100 mug of thyrotropin releasing hormone was injected intravenously on days 1, 7, 17 (I) or 1, 7, and 31 (II). Milking was initiated on days 21 (I) or 35 (II). Overall 13 of 14 cows had mean daily yields of milk greater than 5 kg; 12 had 305-day lactations. Yields of milk in cows injected for 21 days were greater on day 1 and increased more rapidly until peak was reached at 10 wk; daily mean production throughout lactation was greater (14.3 versus 10.1 kg) than for cows injected for 7 days. Lactation curves pooled within cow within treatment differed. Concentrations of estradiol, estrone and progesterone increased during steroid injections and were 2- to 3-fold higher on day 21 in II than on day 7 (I or II), but concentrations of prolactin and total glucocorticoids in plasma did not differ during this time. The quantity of prolactin released in response to injection of thyrotropin releasing hormone was greater 10 days after steroid injections than before or during steroid injections. Preinjection concentrations of prolactin were correlated with magnitude of postinjection response to thyrotropin releasing hormone, but response was not correlated with concentrations of steroids in plasma on day of injection.
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Lembowicz K, Rabek A, Skrzeczkowski L. Hormonal induction of lactation in the cow. THE BRITISH VETERINARY JOURNAL 1982; 138:203-8. [PMID: 7093649 DOI: 10.1016/s0007-1935(17)31083-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Jordan DL, Erb RE, Malven PV, Callahan CJ, Veenhuizen EL. Artificial induction of lactation in cattle: Effect of modified treatments on milk yield, fertility, and hormones in blood plasma and milk. Theriogenology 1981; 16:315-29. [PMID: 16725644 DOI: 10.1016/0093-691x(81)90016-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/1980] [Accepted: 07/02/1981] [Indexed: 11/28/2022]
Abstract
Holsteins were divided into groups CON and IL, each with six dry cows and six heifers. Group CON calved in mid-summer when group IL was treated (kg body weight per day) with (a) progesterone (P; .25 mg) and estradiol-17beta (Ebeta), either .05 mg or .10 mg, for 7 days; (b) continued Ebeta at one-third the initial rate until udders were engorged; (c) then 12 injections (8-hr intervals) of TRH (each 200 mug) or saline; and (d) GnRH during lactation. Milk yield was not affected by Ebeta dose rate, TRH or GnRH. GnRH luteinized the persistent ovarian follicles in group IL, and pregnancy rates were 80% and 83% in groups IL and CON, respectively. Large differences (P < .01) between groups IL and CON were observed in plasma prolactin (IL-low), insulin (IL-high) and growth hormone (IL-low) wherein insulin was correlated (P < .01) negatively with milk yield between days 7 to 49 of lactation. Milk concentrations of P, Ebeta, estrone and estradiol-17alpha in group IL were no higher (P > .10) 14 days after the last injection of P or Ebeta than in group CON or in milk from the herd's bulk tank. The steroids were lowest in milk and plasma from ovariectomized cows. It was hypothesized that high insulin, as well as low prolactin and growth hormone, may contribute to inferior induced lactations.
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Affiliation(s)
- D L Jordan
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana 47907 U.S.A
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Delouis C, Dijiane J, Houdebine LM, Terqui M. Relation between hormones and mammary gland function. J Dairy Sci 1980; 63:1492-513. [PMID: 6253542 DOI: 10.3168/jds.s0022-0302(80)83110-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Chakriyarat S, Head HH, Thatcher WW, Neal FC, Wilcox CJ. Induction of lactation: lactational, physiological, and hormonal responses in the bovine. J Dairy Sci 1978; 61:1715-24. [PMID: 570574 DOI: 10.3168/jds.s0022-0302(78)83793-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Milk yields, physiological responses, and concentrations of plasma hormones were evaluated in 24 attempts to induce lactation in nonlactating dairy cows. Subcutaneous injections of estradiol-17beta and progesterone (.10 and .25 mg/kg body weight per day) for 7 consecutive days were used. Dexamethasone injections (.028 mg/kg body weight per day) on days 18 to 20 were given during 12 attempts at induction. Milking was initiated on day 21. All cows showed proestrus activity within 2 days after the first steroid injection; this subsided, then reappeared in many animals between days 16 to 20. In 14 of 24 attempts mean daily milk production was greater than 5 kg. Actual or projected 305-day lactation milk yields were between 1859 and 5354 kg. However, milk yields of seven induced cows averaged only 73% (32% to 136% range) of their previous natural lactations. Dexamethasone injections increased the number of cows that produced more than 5 kg/day; however, milk yields were not improved. Concentrations of estradiol, estrone, and progesterone in plasma were unaffected by dexamethasone, but concentrations of glucocorticoids in plasma were depressed on days 19 to 22. Concentrations of prolactin (peak and mean) in plasma for six cows each that produced greater or less than 5 kg/day did not differ. However, concentrations of prolactin increased in the week following steroid injections (days 8 to 15) only in those cows that produced greater than 5 kg/day but were elevated in all cows during the 3rd wk.
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Harness JR, Anderson RR, Thompson LJ, Early DM, Younis AK. Induction of lactation by two techniques: success rate, milk composition, estrogen and progesterone in serum and milk, and ovarian effects. J Dairy Sci 1978; 61:1725-35. [PMID: 744808 DOI: 10.3168/jds.s0022-0302(78)83794-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Induction of lactation was attempted in 12 heifers and 12 cows with estradiol benzoate (.011 mg/kg body weight per day) subcutaneous for 10 days or that plus progesterone (.1 mg + .25 mg/kg body weight per day) for 7 days. Milking commenced on day 20 for those treated with the mixture and on day 11 for the others. Lactations were induced (minimum of 4.5 kg of milk/day) in five of six heifers and two of six cows by the mixture and in six of six heifers and three of six cows for estradiol benzoate. Milk production was 44% of herdmates in the 16 induced lactations. Cows on the single treatment had lower production than the other three groups. Ovarian status, cycling, cystic, or static, was affected adversely in 5 of 16 animals induced successfully. Two of the 16, both heifers, carried calves to term following induction. The transition to normal composition of milk was slower for single than double treatment. Lactose increased slowly to normal over the 1st wk of milking while protein decreased slowly. Estrogen and progesterone in milk of induced cows were approximately twice as concentrated as in normal postparturient cows, probably because milk production was halved.
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Keller HF, Chew BP, Erb RE, Malven PV. Estrogen dynamics and hormonal differences associated with lactational performance of cows induced to lactate. J Dairy Sci 1977; 60:1617-23. [PMID: 562359 DOI: 10.3168/jds.s0022-0302(77)84078-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Oestrogen, progesterone and reserpine administration for the artificial induction of lactation in cows. Theriogenology 1977. [DOI: 10.1016/0093-691x(77)90097-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Collier RJ, Bauman DE, Hays RL. Effect of reserpine on milk production and serum prolactin of cows hormonally induced into lactation. J Dairy Sci 1977; 60:896-901. [PMID: 559698 DOI: 10.3168/jds.s0022-0302(77)83960-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Erb RE, Chew BP, Keller HF, Malven PV. Effect of hormonal treatments prior to lactation on hormones in blood plasma, milk, and urine during early lactation. J Dairy Sci 1977; 60:557-65. [PMID: 864043 DOI: 10.3168/jds.s0022-0302(77)83902-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
Estrogen stimulates development of mammary ducts, and progesterone and estrogen stimulate proliferation of secretory tissues. In vivo, sequential addition of insulin (step 1), glucocorticoid (step 2), and prolcatin (step 3) leads to biosynthesis of casein and lactose. In cows, mammogenesis continues until termination of pregnancy and overlaps onset of lactation. Progesterone probably inhibits differentiation of secretory cells at step 2 or step 3. Sensitivity of individual cells to progestational inhibition may decrease variably which may be interdependent upon relative increases in estrogen, prolactin, corticoids, and growth hormone to cause asynchronies among them at calving. Since prolactin in plasma is not correlated with progesterone or the estrogens, factors other than feed-back effects of ovarian steroids may be responsible for its sustained increase periparturiently. Also, elevated prolactin periparturiently may be unrelated to subsequent rates of lactation because its "basal" concentrations may meet requirements when inhibiting effects of progesterone are removed. This concept is attractive because mammary cells neither are synchronized highly for biosynthesis nor secrete normal milk for several days after calving. At the latter time, concentrations in plasma are low for progesterone and estrogen, similar to 3 days before calving for glucocoiticoids and prolactin, and increasing for insulin. Evidence of lactation under unusual circumstances was discussed.
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