Ovarian Response to Different Dose Levels of Follicle Stimulating Hormone (FSH) in Different Genotypes of Bangladeshi Cattle

Abstract

The experiment was conducted under the Department of Animal Breeding and Genetics, Bangladesh Agricultural University (BAU), Mymensingh from June, 2001 to December, 2005 in two different locations (Central Cattle Breeding and Dairy Farm and Bangladesh Livestock Research Institute in Savar, Dhaka) to observe ovarian response to different doses of FSH in three different genotypes of cattle- indigenous Local, Pabna cattle and Friesian×Local cross. Five different dose levels used were 200, 240, 280, 320 and 360 mg. Ovarian response as corpus luteum (CL), recovered embryo (RE) and of transferable embryos (TE) count in Local were significant for 320, 280 and 280 mg respectively. In Pabna cattle CL, RE and TE count were found significant for 360, 320 and 320 mg respectively. In Friesian×Local cross CL, RE and TE count were found significant for 360, 320 and 320 mg respectively. The excellent quality embryos showed significantly the highest yield (1.80±0.20) in the 240 and 280 mg FSH levels in Local genotype. In Pabna cattle, the highest yield (2.00±0.32) was found at FSH level 320 mg. In Friesian×Local, the highest yield (2.20±0.20) was found at FSH level 280 mg.

Impact of Type and Dose of Recombinant Human Follicle Stimulating Hormone on Embryos Production in Dairy Cows and Their Relationship with AMH Concentration

“…However, the types of hormones and its doses were significantly correlated with transferable embryos. Similarly, the recovered embryos and to some extent the ovulation rate showed gonadotropins types and doses-dependent pattern [7,11,33,48]. The ovulation rates continued to increase as FSH doses increased beyond a certain plateau does not done, at the same time fertilization rate and transferable embryo rate remained constant throughout the doses range [7,48,49].…”

“…Similarly, the recovered embryos and to some extent the ovulation rate showed gonadotropins types and doses-dependent pattern [7,11,33,48]. The ovulation rates continued to increase as FSH doses increased beyond a certain plateau does not done, at the same time fertilization rate and transferable embryo rate remained constant throughout the doses range [7,48,49]. On other side, some reports have shown there is no effect of gonadotropins doses on embryo quality [50].…”

“…During super-stimulation, cows treated with low doses of FSH commensurate with the receptors numbers are showed good response to the hormonal treatment, since the sufficient numbers of FSH receptors are able to support the response. Whereas, cows administered with a high doses of FSH does not appears further response as the FSH receptors are limited [48].…”

Response of Superovulation by Using FSH (Follicle Stimulating Hormone) and Sex Determination of Embryos Using PCR in Pesisir Cows of West Sumatra

“…The average of corpus luteum in Pesisir cattle after the injection of 16 ml dosage of FSH was 2.97 ± 1.69, whicj was lower than that observed by Nilchuen et al (2012) Bülbül et al(2013) got the CL average 8.4±1.6 on twice a day injection of 400 mg FSH also 150 µg D-cloprostenol together with the fifth FSH induction to Brown Swiss cattle race. Ali et al (2012) reported that in local cattle of Bangladesh the injection of 320 mg FSH gave the best respond on the corpus luteum quantity 13.60±0.51 meanwhile the lowest average is 8.60±0.60 from the quantity of corpus luteum on 200 mg FSH. Abdullah et al (2011) got the CL number of average 2.7±0.7 on 8.8 mg FSH toward Boer goat.…”

Forecasting the Embryo Productivity of Donor Cows on the Basis of Echographic Characteristics of the Ovaries

“…Analysis of reported dataindicates that the effectiveness of the response of the ovaries of embryo donor cows to the exogenous gonadotropin is influenced by many factors [18]. The major are the breed and physiological state of the animals [19,20], especially metabolic [21] and hormonal status [22][23][24][25], genetic predisposition [26][27][28][29][30], ecological and climatic conditions [31,32]. Given the multiplicity of reasons, the ovaries are the most convenient object to predict embryo productivity of a cow [33][34][35].…”