RESUMO

A puberdade corresponde ao momento da primeira ovulação, que culmina com o desenvolvimento final dos órgãos e estruturas envolvidas no controle neuro-endócrino reprodutivo. É um fenômeno multifatorial com grande impacto na vida produtiva das futuras matrizes e em sua eficiência econômica, ocorrendo muitas interações entre os fatores internos e externos. A idade da puberdade está relacionada ao peso corporal, que possui grandes efeitos da genética do animal e sua interação com o ambiente, especialmente a nutrição e interação social com machos. Algumas espécies, como os bubalinos, sofrem efeito de outros elementos ambientais, como a luminosidade e o fotoperíodo. A puberdade novilhas búfalas ou bovinas pode ser adiantada por meio do emprego de biotécnicas: indução da puberdade ou inseminação artificial em tempo fixo (IATF). Em ambas, os protocolos baseiam-se, principalmente, em aplicação de progestágeno associado com fonte de estradiol; mas a indução também pode ser realizada utilizando outros hormônios, como hormônio liberador de gonadotrofinas, prostaglandinas e gonadotrofina coriônica equina. No emprego da IATF, novilhas pré-púberes podem ser induzidas e inseminadas com outro protocolo de sincronização ou podem ser inseminadas com o mesmo protocolo de IATF, podendo aumentar as taxas de prenhez e diminuir os custos. Adiantando a puberdade, ocorre incremento na produção, melhorando a eficiência econômica da atividade pecuária.(AU)

Puberty corresponds to the moment of the first ovulation, which culminates in the final development of the organs and structures involved in the neuro-endocrine control of reproduction. It is a multifactorial phenomenon with a great impact on the productive life of future matrices and their economic efficiency, with many interactions between internal and external factors. The age of puberty is related to body weight, which has great effects on the animal's genetics and its interaction with the environment, especially nutrition and social interaction with males. Some species, such as buffalo, are affected by other environmental elements, such as luminosity and photoperiod. Puberty in buffaloes and bovine heifers can be advanced through the use of biotechniques: induction of puberty or timed artificial insemination (TAI). In both, the protocols are mainly based on the application of progestogen associated with a source of estradiol; but induction can also be performed using other hormones, such as gonadotropin-releasing hormone, prostaglandins and equine chorionic gonadotropin. In the employment of the TAI, prepubertal heifers can be induced and inseminated with another synchronization protocol or they can be inseminated with the same TAI protocol, which can increase pregnancy rates and decrease costs. Advancing puberty, there is an increase in production, improving the economic efficiency of livestock activity.(AU)

Assuntos

RESUMO

The Artificial Insemination is a practice that provide significant improvements for breeding due to thedecrease of animals and maintenance of the reproductive indices, meaning lifting financial production returns. Thesix arrays used in this study were the breeds Large white, Duroc and crossbred with an average age of two years.Was performed lumbar pressure test determined the optimal time to perform the insemination. The players werepreviously evaluated and insemination dose was 50 ml, with two inseminations, with 12 hours. It used the spiralpipette Artificial Insemination intracervical (IAIC) and disposable pipette cap with the aid of IntrauterineInsemination catheter for intrauterine Artificial (IAIU), each model according insemination method, three arrays ineach method. The pregnancy rate was 66.67% and the rate of return to estrus was 33.33% for the two methods (P<0.05), so there was no significant statistical difference between the methods of Artificial Insemination.(AU)

Assuntos

RESUMO

The work aims to provide knowledge of the actual production of a commercial farm, showing itspotential according to the reproductive management adopted. The work was conducted on a property located onHighway Augusto Meira Filho. - Km 2, in the city of Benevides, Northeastern Pará Females were multiparous,covered by natural mating. The study included the collection of farrowing matrix data in two distinct periods.They analyzed the mortality rate at birth and the number of piglets born alive. It followed 90 mothers in theperiod from March to August 2015 and 81 mothers in the period from February to April 2016. The data wereorganized in spreadsheets in Excel throughout the monitoring period. This study was the 8.63 value of pigletsborn alive according to the data for the year 2015 and 8.30 piglets born alive during follow-up in 2016. Thebirth mortality rate was 10.57% and 7.32% for the years 2015 and 2016, respectively. The reproductive indexobserved on the property is within the reproductive parameters of pig activity. The number of piglets born perlitter is well below, as evidenced by the literature.(AU)

Assuntos

RESUMO

Control of the estrous cycle through estrus synchronization protocols allows the producer to share lotsof females according to the management capacity and ownership of facilities easier handling and better use ofplayers. Therefore, the objective was to verify the influence of artificial insemination in fixed time (FTAI) withthe use of frozen semen in pregnancy rates of dairy goats. The study was conducted in the state of Pará, in themunicipality of Iguarapé-Acu, in a private property that is located in the northeastern region of Pará. 12 Saanengoats intended for milk production were used. Animals submitted to TAI with the use of six frozen semen becamepregnant, representing a pregnancy rate of 50%, which proved satisfactory results.(AU)

Assuntos

RESUMO

The objective of this study was to evaluate the reproductive efficiency in a commercial farm pig in thecity of Benevides, Pará. We carried out the collection of pregnancy and parturition of the data arrays in twoperiods, and evaluated the rate of return to estrus. 90 arrays of March were accompanied to August 2015 and 81arrays from February to April 2016. Females were multiparous, housed in gestation crates and maternity andwithout food manejo difference. Thus, the feeding mothers in pregnancy and phase of breeding was carried outtwice a day (± 2 kg feed / animal / day). The pregnancy rate was 66.35% referring to 2015 and 57.92% relatedto 2016. Rates of return to estrus were 33.65% and 42.09% for 2015 and 2016, respectively. The reproductiverates of ownership are lower than ideal for productive activity.(AU)

Assuntos

RESUMO

The aim of this study was to correlate the profile of insemination, uterine status and the presence ofmucus on the day of insemination, with a pregnancy rate of buffalo cows in lowland area in the state of Amapá.This study was conducted at Fazenda general Moto LTDA., 148 km from the town of Macapa. The animals werekept in extensive grazing system. They used 48 animals received the following protocol: Day 0 (D0) to insert theintravaginal device P4 and 2.0 mg BE. At D9 was taken withdrawal of the device and application of 0.5 mg ofPGF2a and 400 IU eCG. In D11 was applied 0.004 mg GRnH and carried out insemination in D12, 64 hoursafter the withdrawal. The diagnosis of pregnancy was performed 30 days after artificial insemination. The datacollected from individual records were tabulated in spreadsheets. And evaluated in the SAS software (2000) 23buffaloes that had a positive pregnancy, 3 a bad AI profile, 18 a good AI profile and 2 excellent AI profile. 25cows got negative pregnancy, among them 4 demonstrated bad AI profile, 21 a good AI profile and no possessedexcellent AI profile. Regarding uterine Status- 46 animals (97.9%) had contracted uterus, however only 22(47.83%) animals were diagnosed with positive penhez. The variable presence of mucus, of 48 buffalos 21(43.75%) had such characteristics. The pregnancy rate was 22.9% (11) for the cows with mucus during theIATF. The variables profile of AI, mucus, uterine status, no positive influence on the pregnancy rate.(AU)

Assuntos

RESUMO

The aim of this study was to correlate the profile of insemination, uterine status and the presence ofmucus on the day of insemination, with a pregnancy rate of buffalo cows in lowland area in the state of Amapá.This study was conducted at Fazenda general Moto LTDA., 148 km from the town of Macapa. The animals werekept in extensive grazing system. They used 48 animals received the following protocol: Day 0 (D0) to insert theintravaginal device P4 and 2.0 mg BE. At D9 was taken withdrawal of the device and application of 0.5 mg ofPGF2a and 400 IU eCG. In D11 was applied 0.004 mg GRnH and carried out insemination in D12, 64 hoursafter the withdrawal. The diagnosis of pregnancy was performed 30 days after artificial insemination. The datacollected from individual records were tabulated in spreadsheets. And evaluated in the SAS software (2000) 23buffaloes that had a positive pregnancy, 3 a bad AI profile, 18 a good AI profile and 2 excellent AI profile. 25cows got negative pregnancy, among them 4 demonstrated bad AI profile, 21 a good AI profile and no possessedexcellent AI profile. Regarding uterine Status- 46 animals (97.9%) had contracted uterus, however only 22(47.83%) animals were diagnosed with positive penhez. The variable presence of mucus, of 48 buffalos 21(43.75%) had such characteristics. The pregnancy rate was 22.9% (11) for the cows with mucus during theIATF. The variables profile of AI, mucus, uterine status, no positive influence on the pregnancy rate.

Assuntos

RESUMO

Control of the estrous cycle through estrus synchronization protocols allows the producer to share lotsof females according to the management capacity and ownership of facilities easier handling and better use ofplayers. Therefore, the objective was to verify the influence of artificial insemination in fixed time (FTAI) withthe use of frozen semen in pregnancy rates of dairy goats. The study was conducted in the state of Pará, in themunicipality of Iguarapé-Acu, in a private property that is located in the northeastern region of Pará. 12 Saanengoats intended for milk production were used. Animals submitted to TAI with the use of six frozen semen becamepregnant, representing a pregnancy rate of 50%, which proved satisfactory results.

Assuntos

RESUMO

The objective of this study was to evaluate the reproductive efficiency in a commercial farm pig in thecity of Benevides, Pará. We carried out the collection of pregnancy and parturition of the data arrays in twoperiods, and evaluated the rate of return to estrus. 90 arrays of March were accompanied to August 2015 and 81arrays from February to April 2016. Females were multiparous, housed in gestation crates and maternity andwithout food manejo difference. Thus, the feeding mothers in pregnancy and phase of breeding was carried outtwice a day (± 2 kg feed / animal / day). The pregnancy rate was 66.35% referring to 2015 and 57.92% relatedto 2016. Rates of return to estrus were 33.65% and 42.09% for 2015 and 2016, respectively. The reproductiverates of ownership are lower than ideal for productive activity.

Assuntos

RESUMO

The work aims to provide knowledge of the actual production of a commercial farm, showing itspotential according to the reproductive management adopted. The work was conducted on a property located onHighway Augusto Meira Filho. - Km 2, in the city of Benevides, Northeastern Pará Females were multiparous,covered by natural mating. The study included the collection of farrowing matrix data in two distinct periods.They analyzed the mortality rate at birth and the number of piglets born alive. It followed 90 mothers in theperiod from March to August 2015 and 81 mothers in the period from February to April 2016. The data wereorganized in spreadsheets in Excel throughout the monitoring period. This study was the 8.63 value of pigletsborn alive according to the data for the year 2015 and 8.30 piglets born alive during follow-up in 2016. Thebirth mortality rate was 10.57% and 7.32% for the years 2015 and 2016, respectively. The reproductive indexobserved on the property is within the reproductive parameters of pig activity. The number of piglets born perlitter is well below, as evidenced by the literature.

Assuntos

RESUMO

The Artificial Insemination is a practice that provide significant improvements for breeding due to thedecrease of animals and maintenance of the reproductive indices, meaning lifting financial production returns. Thesix arrays used in this study were the breeds Large white, Duroc and crossbred with an average age of two years.Was performed lumbar pressure test determined the optimal time to perform the insemination. The players werepreviously evaluated and insemination dose was 50 ml, with two inseminations, with 12 hours. It used the spiralpipette Artificial Insemination intracervical (IAIC) and disposable pipette cap with the aid of IntrauterineInsemination catheter for intrauterine Artificial (IAIU), each model according insemination method, three arrays ineach method. The pregnancy rate was 66.67% and the rate of return to estrus was 33.33% for the two methods (P<0.05), so there was no significant statistical difference between the methods of Artificial Insemination.

Assuntos