TY  - JOUR
T1  - Effect of Supplemental Fish Meal on Reproduction and Immunology Responses in Early Lactating Holstein Dairy Cows
AU - , A. Heravi Moussavi AU - , M. Danesh Mesgaran AU - , A. Soleimani AU - , T. Vafa 
JO  - Journal of Animal and Veterinary Advances
VL  - 7
IS  - 4
SP  - 520
EP  - 525
PY  - 2008
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2008.520.525
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2008.520.525
KW  - Dairy cow
KW  -fish meal
KW  -follicular dynamic
KW  -reproduction and immunology
KW  -Hoistein dairy cows
AB  - The study was designed to test the effect of supplemental Fish Meal (FM) on first 60 days cumulative milk production, interval to postpartum inseminations, number of days open, follicular dynamic and complete blood counts in early lactating Holstein cows. From 21 days before predicted calving time to 35 day in milk (DIM), cows were fed diets containing none (control) or 3.5 and 1.95% fish meal during prepartum and postpartum periods. Diets were formulated to be isoenergetic and provide similar amounts of NEL and NFC using  the  Cornell  Net  Carbohydrate  and  Protein  System.  Ovarian  follicular  dynamics  were  monitored using  a  7.5  MHz  rectal  transducer.  The  first  60  days  cumulative  milk  production  and  305  days adjusted milk  yield  were  similar  among  the  diets.  Number  of  follicles,  maximum  diameter of 1st dominant follicle on day 10 and 14 postpartum, number of days until dominant follicle detection and number of days until detection of a follicle  10 mm were not different between the diets. The interval from calving to 1st, 2nd and 3rd inseminations and also number of days open were all similar among the dietary groups. Complete blood counts were similar in week preceding calving. Except than neutrophils (2374 and 4181±551, respectively) which tended to be significant (p = 0.06), other blood cells were not affected by diet. Results from this experiment demonstrate that dietary supplementation with fish meal from -21 to 35 day postpartum had no effect on milk yield, follicular dynamic and complete blood count.
ER  -