University Journal of Zoology, Rajshahi University, 2008
A comparative account of the productive and reproductive performance of crossbred and indigenous ... more A comparative account of the productive and reproductive performance of crossbred and indigenous dairy cows at some selected areas of Comilla district. The survey was conducted on 50 dairy cows for a period of four months from June to September, 2004. Out of 50 cows 25 were crossbred and 25 were indigenous. Results showed that the average daily milk production of Local, Shahiwal x Local, Friesian x Local and Jersey x Local dairy cows was 2.26±0.19, 4.9±0.95, 6.0±1.0 and 5.71±0.87 liter respectively. The average age of calving interval and lactation length of the crossbred and indigenous cows did not differ significantly (P>0.05). However, the average age at puberty of Shahiwal x Local, Friesian x Local and Jersey x Local was significantly (P<0.01) lower than the local breed. The crossbred cows had significantly (P<0.01) lower pubertal age than local. The postpartum heat period and service per conception of different crossbred and local cows did not differ significantly (P&g...
The present study aimed to evaluate the relationship between nutritional and physical development... more The present study aimed to evaluate the relationship between nutritional and physical development parameters and pregnancy rate results in Nellore beef heifers. The study was conducted in three commercial beef herds located in Camapua, Tres Lagoas and Agua Clara-MS. A total of 650 heifers with 13.0 ± 0.9 months of age was submitted to the same synchronization protocol for fixed time artificial insemination (FTAI). On a random day of the estrus cycle (Day -10) the females were evaluated for live weight, body condition score (BCS, 1-5 scale), subcutaneus fat thickness at the rump area (SFTR; ultrassonographic exams done with Aloka SSD500, Aloka, Japan) and the relation height/rib depth (RIBD). Ten days later (Day 0), all animals received an auricular ear implant containing 3.0 mg of Norgestomet (CRESTAR®, MSD Animal Health) and 2.0 mg of estradiol benzoate (EB; Gonadiol®, MSD Animal Health) intramuscularly (IM). At Day 8, the auricular implants were removed and they received 0.6 mg IM...
The aim of this study was to evaluate the conception rate in multiparous Nelore (Bos indicus) cow... more The aim of this study was to evaluate the conception rate in multiparous Nelore (Bos indicus) cows using two intravaginal progesterone (P4) devices (Sincrogest®; 1.0 g of P4 or CIDR®; 1.9g P4) during the TAI protocol 3 (Day 0, Day 8 and Day 10) or 4 (Day 0, Day 7, Day 9 and Day 11) managements. A total of 372 cows Nelore multiparous, from a herd located in Aquidauana/MS, was homogeneously distributed according to body condition score (mean of 2.90±0.02) and days postpartum (mean 38 8±0.3 days) at the beginning of the TAI protocol. At initiation of the TAI protocol (D0) the animals were treated with 2.0 mg EB IM (Sincrodiol®, Ouro Fino, Brazil) and insertion of the intravaginal device release of P4 (SINCROGEST® or CIDR®). To avoid additional managements from this point onwards, the cows were managed separately according to the type of protocol (3 vs. 4 managements). In cows receiving the protocol with 3 managements, withdrawal of P4 device was performed on D8 (Sincrogest® or CIDR®) a...
Acute puerperal metritis (APM) in dairy cows is often treated with antibiotics. An increasing ant... more Acute puerperal metritis (APM) in dairy cows is often treated with antibiotics. An increasing antibiotic resistance is well documented and associated with decreasing clinical efficacy, animal welfare and economic consequences. Hence, there is a significant need to encourage prudent use of antibiotics and alternative therapies to antibiotics. The objective of this study was to compare the efficacies of ketoprofen and ceftiofur for the treatment of APM. Between June 2013 and February 2015, a total of 610 dairy cows from 6 farms in Germany were enrolled. Inclusion criteria was a rectal temperature (RT) ≥ 39.5°C and a reddish-brown fetid vaginal discharge within the first 10 DIM. Cows meeting the inclusion criteria were randomly allocated to treatment with ketoprofen (3 mg/kg of BW, n = 300) or treatment with ceftiofur (1 mg/kg of BW, n = 310), both on 3 consecutive days. Rectal temperature was recorded daily for a period of 7 d after enrollment. Cows that showed RT ≥39.5°C on d 4 to 7 ...
The objectives of present study were evaluate the effect of PGF2α administration at onset of TAI ... more The objectives of present study were evaluate the effect of PGF2α administration at onset of TAI protocol, and effect of intravaginal progesterone device (Fertilcare 600®) compared to Norgestomet auricular device (CRESTAR®) in conception rate of Nelore heifers (Bos indicus). For this, cycling heifers (n = 450) presenting body condition score (BCS) of 3.0 ± 0.3 were randomly allocated to one of three experimental groups (G-CRESTAR, n = 146; G-P4, n = 133 e G-P4-PGFD0, n = 136). Females from G-CRESTAR, received a Norgestomet auricular device (Crestar®, MSD) plus 2.0mg of estradiol benzoate (EB; Gonadiol®, MSD) on D0. On D8, ear implant was removed and 0.265mg of PGF2α (Ciosin®, MSD) was given followed by 300 UI of equine chorionic gonadotropin (eCG; Folligon®, MSD) and 1.0mg estradiol cypionate (EC; ECP®, Zoetis). Heifers from G-P4 and G-P4-PGFD0 were submitted to a protocol for fixed-time artificial insemination (TAI) with an intravaginal device containing 0.6g of P4 (Fertilcare 600®...
Protocols to induce cyclicity in zebu heifers with 24 months age increases cyclicity and concepti... more Protocols to induce cyclicity in zebu heifers with 24 months age increases cyclicity and conception rates after timed artificial insemination (TAI), however there is little information addressing that for Nelore heifers with 14 months age. The objective of the present study is to evaluate the influence of the protocol to induce cyclicity on reproductive efficiency of Nelore heifers. A total of 626 heifers with 14.0±0.04 months age, 261.3±0.94kg of live weight and BCS=3.05±0.01 (1-5), from two commercial beef farms (Camapua and Tres Lagoas, MS, Brazil) and distributed into 5 different cohorts were enrolled in the trial. Females were randomly allocated, within each cohort, into two experimental groups: Induction (n=307) and Control (no additional treatment; n=319). The Induction group received (Day -22) a progesterone (P4; CIDR®, Zoetis) device previously used for 24 days, which remained for 10 days. Immediately after P4 removal (Day -12), it was administrated 0.6 mg IM of estradiol c...
The aim of this study was to evaluate the pregnancy rate in multiparous cows Nelore (Bos indicus)... more The aim of this study was to evaluate the pregnancy rate in multiparous cows Nelore (Bos indicus) using different intravaginal progesterone (P4) devices (Sincrogest®; 1.0 g of P4 or CIDR®; 1.9g P4) new, used for the second or third time during the TAI protocol 3 (Day 0, Day 8 and Day 10) or 4 (Day 0, Day 7, Day 9 and Day 11) managements. A total of 372 cows Nelore, from a farm localized in Aquidauana / MS, was homogeneously distributed at the beginning of the TAI protocol according to body condition score (New = 3.0 ± 0.42; 2o Use = 2.6 ± 0.36; 3o Use 2.7 ± 0.39) and days postpartum (New = 43.5 ± 9; 2o Use = 44.5 ± 6; 3o Use 44.3 ± 6 dias). Animals received on Day 0 of the Protocol treatment with 2.0 mg EB IM (Sincrodiol®, Ourofino, Brazil) and insertion of the intravaginal device release of P4 (Sincrogest® or CIDR®). To avoid the effect of managements number in the pregnancy rate to TAI, the females have been separated according to experimental group (3 vs. 4 managements). In the g...
University Journal of Zoology, Rajshahi University, 2008
A comparative account of the productive and reproductive performance of crossbred and indigenous ... more A comparative account of the productive and reproductive performance of crossbred and indigenous dairy cows at some selected areas of Comilla district. The survey was conducted on 50 dairy cows for a period of four months from June to September, 2004. Out of 50 cows 25 were crossbred and 25 were indigenous. Results showed that the average daily milk production of Local, Shahiwal x Local, Friesian x Local and Jersey x Local dairy cows was 2.26±0.19, 4.9±0.95, 6.0±1.0 and 5.71±0.87 liter respectively. The average age of calving interval and lactation length of the crossbred and indigenous cows did not differ significantly (P>0.05). However, the average age at puberty of Shahiwal x Local, Friesian x Local and Jersey x Local was significantly (P<0.01) lower than the local breed. The crossbred cows had significantly (P<0.01) lower pubertal age than local. The postpartum heat period and service per conception of different crossbred and local cows did not differ significantly (P&g...
The present study aimed to evaluate the relationship between nutritional and physical development... more The present study aimed to evaluate the relationship between nutritional and physical development parameters and pregnancy rate results in Nellore beef heifers. The study was conducted in three commercial beef herds located in Camapua, Tres Lagoas and Agua Clara-MS. A total of 650 heifers with 13.0 ± 0.9 months of age was submitted to the same synchronization protocol for fixed time artificial insemination (FTAI). On a random day of the estrus cycle (Day -10) the females were evaluated for live weight, body condition score (BCS, 1-5 scale), subcutaneus fat thickness at the rump area (SFTR; ultrassonographic exams done with Aloka SSD500, Aloka, Japan) and the relation height/rib depth (RIBD). Ten days later (Day 0), all animals received an auricular ear implant containing 3.0 mg of Norgestomet (CRESTAR®, MSD Animal Health) and 2.0 mg of estradiol benzoate (EB; Gonadiol®, MSD Animal Health) intramuscularly (IM). At Day 8, the auricular implants were removed and they received 0.6 mg IM...
The aim of this study was to evaluate the conception rate in multiparous Nelore (Bos indicus) cow... more The aim of this study was to evaluate the conception rate in multiparous Nelore (Bos indicus) cows using two intravaginal progesterone (P4) devices (Sincrogest®; 1.0 g of P4 or CIDR®; 1.9g P4) during the TAI protocol 3 (Day 0, Day 8 and Day 10) or 4 (Day 0, Day 7, Day 9 and Day 11) managements. A total of 372 cows Nelore multiparous, from a herd located in Aquidauana/MS, was homogeneously distributed according to body condition score (mean of 2.90±0.02) and days postpartum (mean 38 8±0.3 days) at the beginning of the TAI protocol. At initiation of the TAI protocol (D0) the animals were treated with 2.0 mg EB IM (Sincrodiol®, Ouro Fino, Brazil) and insertion of the intravaginal device release of P4 (SINCROGEST® or CIDR®). To avoid additional managements from this point onwards, the cows were managed separately according to the type of protocol (3 vs. 4 managements). In cows receiving the protocol with 3 managements, withdrawal of P4 device was performed on D8 (Sincrogest® or CIDR®) a...
Acute puerperal metritis (APM) in dairy cows is often treated with antibiotics. An increasing ant... more Acute puerperal metritis (APM) in dairy cows is often treated with antibiotics. An increasing antibiotic resistance is well documented and associated with decreasing clinical efficacy, animal welfare and economic consequences. Hence, there is a significant need to encourage prudent use of antibiotics and alternative therapies to antibiotics. The objective of this study was to compare the efficacies of ketoprofen and ceftiofur for the treatment of APM. Between June 2013 and February 2015, a total of 610 dairy cows from 6 farms in Germany were enrolled. Inclusion criteria was a rectal temperature (RT) ≥ 39.5°C and a reddish-brown fetid vaginal discharge within the first 10 DIM. Cows meeting the inclusion criteria were randomly allocated to treatment with ketoprofen (3 mg/kg of BW, n = 300) or treatment with ceftiofur (1 mg/kg of BW, n = 310), both on 3 consecutive days. Rectal temperature was recorded daily for a period of 7 d after enrollment. Cows that showed RT ≥39.5°C on d 4 to 7 ...
The objectives of present study were evaluate the effect of PGF2α administration at onset of TAI ... more The objectives of present study were evaluate the effect of PGF2α administration at onset of TAI protocol, and effect of intravaginal progesterone device (Fertilcare 600®) compared to Norgestomet auricular device (CRESTAR®) in conception rate of Nelore heifers (Bos indicus). For this, cycling heifers (n = 450) presenting body condition score (BCS) of 3.0 ± 0.3 were randomly allocated to one of three experimental groups (G-CRESTAR, n = 146; G-P4, n = 133 e G-P4-PGFD0, n = 136). Females from G-CRESTAR, received a Norgestomet auricular device (Crestar®, MSD) plus 2.0mg of estradiol benzoate (EB; Gonadiol®, MSD) on D0. On D8, ear implant was removed and 0.265mg of PGF2α (Ciosin®, MSD) was given followed by 300 UI of equine chorionic gonadotropin (eCG; Folligon®, MSD) and 1.0mg estradiol cypionate (EC; ECP®, Zoetis). Heifers from G-P4 and G-P4-PGFD0 were submitted to a protocol for fixed-time artificial insemination (TAI) with an intravaginal device containing 0.6g of P4 (Fertilcare 600®...
Protocols to induce cyclicity in zebu heifers with 24 months age increases cyclicity and concepti... more Protocols to induce cyclicity in zebu heifers with 24 months age increases cyclicity and conception rates after timed artificial insemination (TAI), however there is little information addressing that for Nelore heifers with 14 months age. The objective of the present study is to evaluate the influence of the protocol to induce cyclicity on reproductive efficiency of Nelore heifers. A total of 626 heifers with 14.0±0.04 months age, 261.3±0.94kg of live weight and BCS=3.05±0.01 (1-5), from two commercial beef farms (Camapua and Tres Lagoas, MS, Brazil) and distributed into 5 different cohorts were enrolled in the trial. Females were randomly allocated, within each cohort, into two experimental groups: Induction (n=307) and Control (no additional treatment; n=319). The Induction group received (Day -22) a progesterone (P4; CIDR®, Zoetis) device previously used for 24 days, which remained for 10 days. Immediately after P4 removal (Day -12), it was administrated 0.6 mg IM of estradiol c...
The aim of this study was to evaluate the pregnancy rate in multiparous cows Nelore (Bos indicus)... more The aim of this study was to evaluate the pregnancy rate in multiparous cows Nelore (Bos indicus) using different intravaginal progesterone (P4) devices (Sincrogest®; 1.0 g of P4 or CIDR®; 1.9g P4) new, used for the second or third time during the TAI protocol 3 (Day 0, Day 8 and Day 10) or 4 (Day 0, Day 7, Day 9 and Day 11) managements. A total of 372 cows Nelore, from a farm localized in Aquidauana / MS, was homogeneously distributed at the beginning of the TAI protocol according to body condition score (New = 3.0 ± 0.42; 2o Use = 2.6 ± 0.36; 3o Use 2.7 ± 0.39) and days postpartum (New = 43.5 ± 9; 2o Use = 44.5 ± 6; 3o Use 44.3 ± 6 dias). Animals received on Day 0 of the Protocol treatment with 2.0 mg EB IM (Sincrodiol®, Ourofino, Brazil) and insertion of the intravaginal device release of P4 (Sincrogest® or CIDR®). To avoid the effect of managements number in the pregnancy rate to TAI, the females have been separated according to experimental group (3 vs. 4 managements). In the g...
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