Effect of farm and simulated laboratory cold environmental conditions on the performance and physiological responses of lactating dairy cows supplemented with bovine somatotropin (BST)

1990 ◽  
Vol 34 (3) ◽  
pp. 151-156 ◽  
Author(s):  
B. A. Becker ◽  
H. D. Johnson ◽  
R. Li ◽  
R. J. Collier
Keyword(s):  
Dairy Cows ◽  
Environmental Conditions ◽  
Physiological Responses ◽  
Bovine Somatotropin ◽  
Lactating Dairy Cows

scholarly journals Effects of Bovine Somatotropin on Uterine Genes Related to the Prostaglandin Cascade in Lactating Dairy Cows

2005 ◽  
Vol 88 (2) ◽  
pp. 543-552 ◽  
Author(s):  
S.A. Balaguer ◽  
R.A. Pershing ◽  
C. Rodriguez-Sallaberry ◽  
W.W. Thatcher ◽  
L. Badinga
Keyword(s):  
Dairy Cows ◽  
Bovine Somatotropin ◽  
Lactating Dairy Cows

scholarly journals Evaluation of conductive cooling of lactating dairy cows under controlled environmental conditions

2015 ◽  
Vol 98 (3) ◽  
pp. 1759-1771 ◽  
Author(s):  
X.A. Ortiz ◽  
J.F. Smith ◽  
F. Rojano ◽  
C.Y. Choi ◽  
J. Bruer ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Environmental Conditions ◽  
Lactating Dairy Cows

scholarly journals Productive and physiological responses of lactating dairy cows supplemented with phytogenic feed ingredients1

2019 ◽  
Vol 3 (4) ◽  
pp. 1133-1142 ◽  
Author(s):  
Rodrigo O Rodrigues ◽  
Reinaldo F Cooke ◽  
Franciele C Firmino ◽  
Mayara K R Moura ◽  
Beatriz F Angeli ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Body Condition Score ◽  
Physiological Responses ◽  
Milk Composition ◽  
Clinical Mastitis ◽  
Serum Concentrations ◽  
Lactating Dairy Cows ◽  
Ground Corn

Abstract This experiment compared milk production, milk composition, and physiological responses in lactating dairy cows supplemented with or without a mixture of condensed tannins, encapsulated cinnamaldehyde, curcumin, capsaicin, and piperine. Thirty-six lactating, multiparous, pregnant ¾ Holstein × ¼ Gir cows were maintained in a single drylot pen with ad libitum access to water and a total-mixed ration and were milked twice daily (d –7 to 84). On d 0, cows were ranked by days in milk (86 ± 3 d), milk yield (27.8 ± 1.0 kg), body weight (BW; 584 ± 10 kg), and body condition score (BCS; 3.04 ± 0.06) and assigned to receive (SUPP; n = 18) or not (CON; n = 18) 30 g/cow daily (as-fed basis) of Actifor Pro (Delacon Biotechnik GmbH; Steyregg, Austria). From d 0 to 84, SUPP cows individually received (as-fed basis) 15 g of Actifor Pro mixed with 85 g of finely ground corn through self-locking headgates before each milking of the day. Each CON cow concurrently received 85 g (as-fed basis) of finely ground corn through self-locking headgates. Throughout the experimental period (d –7 to 84), cows from both treatments were administered 500 mg of sometribove zinc at 14-d intervals and were monitored daily for morbidity, including clinical mastitis. Individual milk production was recorded daily, whereas milk samples were collected weekly for analysis of milk composition. Cow BW, BCS, and blood samples were also collected weekly. Cows receiving SUPP gained more BCS (P = 0.05) and had greater (P = 0.04) milk yield during the experiment compared with CON cows (0.22 vs. 0.07 of BCS, SEM = 0.05; 29.5 vs. 27.9 kg/d, SEM = 0.5). Milk composition did not differ (P ≥ 0.15) between SUPP and CON cows; hence, SUPP cows also had greater (P ≤ 0.02) production of fat-corrected and energy-corrected milk. Incidence of clinical mastitis did not differ (P ≥ 0.49) between SUPP and CON cows. No treatment differences were also detected (P ≥ 0.21) for serum concentrations of glucose and serum urea N. Mean serum haptoglobin concentration during the experiment was greater (P = 0.05) in CON vs. SUPP cows. Cows receiving SUPP had less (P ≤ 0.04) serum cortisol concentrations on d 21 and 42, and greater (P ≤ 0.05) serum concentrations of insulin-like growth factor-I on d 7, 35, and 63 compared with CON cows (treatment × day interactions; P ≤ 0.02). Collectively, supplementing phytogenic feed ingredients improved nutritional status and milk production of lactating ¾ Holstein × ¼ Gir cows.

scholarly journals Effect of Exogenous Bovine Somatotropin on Mammary Lipid Metabolism and Milk Yield in Lactating Dairy Cows

1989 ◽  
Vol 72 (6) ◽  
pp. 1469-1476 ◽  
Author(s):  
D.S. Lough ◽  
L.D. Muller ◽  
R.S. Kensinger ◽  
L.C. Griel ◽  
C.D. Azzara
Keyword(s):  
Lipid Metabolism ◽  
Dairy Cows ◽  
Milk Yield ◽  
Bovine Somatotropin ◽  
Lactating Dairy Cows

scholarly journals Dose Response to Recombinant Bovine Somatotropin from Weeks 15 to 44 Postpartum in Lactating Dairy Cows

1990 ◽  
Vol 73 (10) ◽  
pp. 2907-2915 ◽  
Author(s):  
Richard A. Erdman ◽  
Bal K. Sharma ◽  
Randy D. Shaver ◽  
Ralph M. Cleale
Keyword(s):  
Dairy Cows ◽  
Dose Response ◽  
Bovine Somatotropin ◽  
Recombinant Bovine Somatotropin ◽  
Lactating Dairy Cows

scholarly journals Effects of bovine somatotropin injection on serum concentrations of progesterone in non-lactating dairy cows

2013 ◽  
Vol 154 (1-3) ◽  
pp. 240-245 ◽  
Author(s):  
A.C. Aboin ◽  
R.F. Cooke ◽  
F.V.R. Vieira ◽  
T. Leiva ◽  
J.L.M. Vasconcelos
Keyword(s):  
Dairy Cows ◽  
Bovine Somatotropin ◽  
Serum Concentrations ◽  
Lactating Dairy Cows
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