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排序方式: 共有501条查询结果,搜索用时 125 毫秒
91.
J Santiago Moreno A Gomez Brunet A Gonzalezde Bulnes D Villar A Lopez Sebastian 《Reproduction in domestic animals》2000,35(2):49-52
The onset of puberty was assessed from plasma progesterone profiles for Mouflon (n = 8) and Manchega (n = 7) female lambs born in April. Four Mouflons exhibited their first ovulation at a mean date of 27 November ± 1.4 days, the mean age being 248.5 ± 3.9 days and the mean body weight 23.8 ± 0.6 kg. The remaining four Mouflons, which had a slower growth rate, attained puberty during the autumn of the following year. Five of seven Manchega lambs attained puberty in their first year at a mean date of 5 Oct ± 3.3, the mean age being 185.6 ± 2.6 days and the mean body weight 41.8 ± 2.0 kg. The mean live‐weight at the onset of puberty was 65.1 and 82% (p < 0.05) of adult body weights for Manchega and Mouflons, respectively. Overall, the results indicate that there is a threshold of body‐weight necessary for the attainment of puberty in the first breeding season for spring‐born lambs, which is very different between both Mouflon and Manchega. When body weight was below 23.8 ±0.6 and 41.8 ± 2.0 kg for Mouflon and Manchega lambs, respectively, first ovulation did not occur until the beginning of the next breeding season. The onset of puberty during the second year of life occurred within the specific reproductive seasons for Mouflon (October–April) and Manchega (July–March) ewes, despite minimal further growth. 相似文献
92.
Vanessa MILECH Pmela CAYE Bernardo NASCIMENTO ANTUNES Josaine Cristina da SILVA RAPPETI Soliane CARRA PERERA Martielo Ivan GEHRCKE Thaís Cozza dos SANTOS Camila CONTE Fabrício de VARGAS ARIGONY BRAGA Guilherme Albuquerque de OLIVEIRA CAVALCANTI Maurício VELOSO BRUN 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(4):618
This paper reports on two cases of laparoscopic nephrotomy employed in the treatment of canine dioctophymosis, which is considered a unusual procedure and a new treatment proposal heretofore not performed in veterinary medicine. Two patients were treated, one with a history of hematuria and the other with incidental finding of the parasite in the abdominal cavity during elective ovariohysterectomy. Both dogs were subjected to abdominal ultrasound, which produced images indicating the presence of the parasite in the right side kidney, but with partial parenchymal preservation. The patients were therefore subjected to laparoscopic nephrotomy. The surgical procedure was effective in treating dioctophymosis and enabled minimum tissue invasion during surgery, in addition to preservation of the kidney. 相似文献
93.
Hematologic and biochemical reference intervals for Wild Boar (Sus scrofa) captured by cage trap
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94.
Costa Evely Giovanna Leite da Silva Fabiano Ferreira Silva Robério Rodrigues Porto Antonio Ferraz Santiago Bismarck Moreira Rocha Leone Campos Cruz Aline Gonçalves Guedes Anna Caroline Ferreira Neto Teotônio Martins Vieira Edvaldo Alves 《Tropical animal health and production》2019,51(8):2505-2511
Tropical Animal Health and Production - The objective of this study was to evaluate the inclusion of increasing levels of licuri meal as a substitute for soybean bran in the diet of pasture-based... 相似文献
95.
Influence of Post‐Mortem Sperm Recovery Method and Extender on Unstored and Refrigerated Rooster Sperm Variables
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S Villaverde‐Morcillo MC Esteso C Castaño J Santiago‐Moreno 《Reproduction in domestic animals》2016,51(1):40-46
Many post‐mortem sperm collection techniques have been described for mammalian species, but their use in birds is scarce. This paper compares the efficacy of two post‐mortem sperm retrieval techniques ‐ the flushing and float‐out methods ‐ in the collection of rooster sperm, in conjunction with the use of two extenders, i.e., L&R‐84 medium and Lake 7.1 medium. To determine whether the protective effects of these extenders against refrigeration are different for post‐mortem and ejaculated sperm, pooled ejaculated samples (procured via the massage technique) were also diluted in the above extenders. Post‐mortem and ejaculated sperm variables were assessed immediately at room temperature (0 h), and after refrigeration at 5°C for 24 and 48 h. The flushing method retrieved more sperm than the float‐out method (596.5 ± 75.4 million sperm vs 341.0 ± 87.6 million sperm; p < 0.05); indeed, the number retrieved by the former method was similar to that obtained by massage‐induced ejaculation (630.3 ± 78.2 million sperm). For sperm collected by all methods, the L&R‐84 medium provided an advantage in terms of sperm motility variables at 0 h. In the refrigerated sperm samples, however, the Lake 7.1 medium was associated with higher percentages of viable sperm, and had a greater protective effect (p < 0.05) with respect to most motility variables. In conclusion, the flushing method is recommended for collecting sperm from dead birds. If this sperm needs to be refrigerated at 5°C until analysis, Lake 7.1 medium is recommended as an extender. 相似文献
96.
Camila Trevisan Pereira Fabio Luiz Navarro Marques Jamie Williams Benedicto Wlademir De Martin Pedro Primo Bombonato 《Veterinary radiology & ultrasound》2008,49(5):487-491
Lymphoscintigraphy is the technique of choice for sentinel lymph node detection in women with early breast cancer, but there is limited information evaluating the value of this technique in animals. We investigated mammary lymphatic drainage in 25 young female mongrel dogs by intramammary injection of 18.5 MBq of 99mTc-dextran (70,000 Da). Lymph node anatomical referencing was obtained using an external marker, bone scintigraphy, or scintiscanning the body contour. Cranial and caudal thoracic mammary glands drained into the cranial sternal lymph node and axillary lymph center. The cranial thoracic mammary gland also drained into the superficial cervical lymph node in two of five animals. The cranial abdominal gland was drained by the axillary lymph center. The caudal abdominal mammary gland was drained by the superficial inguinal lymph node in all animals and simultaneously by medial iliac lymph nodes in four of five animals. In one dog, this mammary gland was also drained by the mediastinal and the superficial cervical lymph nodes. The inguinal mammary gland was drained by superficial inguinal lymph nodes and simultaneously via the medial iliac lymph node in one animal. Lymphatic communications between lymph nodes were identified in 11 of 25 (44%) animals. 99mTc-dextran mammary lymphoscintigraphy was easy and rapid to perform and may provide valuable information for further studies. 相似文献
97.
98.
Mirella Cunha Melar Nilva Kazue Sakomura Matheus de Paula Reis Nelson Jos Peruzzi Camila Anglica Gonalves 《Journal of animal physiology and animal nutrition》2019,103(4):1107-1115
The objective of this work was to determine the efficiency of utilization (EU) and produce factorial models for optimal isoleucine (Ile) intake. Six dose–response trials were carried out, three for males and three for females, with 640 Ross 308 in each studied phase. The initial (1–14 days), grower (15–28 days) and finisher (29–42 days) phases were evaluated to cover the growing phase of the broiler chicken. In total, eight treatments were randomly distributed to four replicates of 20 birds each. The treatments consisted of seven crescent levels of Ile and one counter proof to ensure that Ile was the first limiting amino acid in the diet. Dilution technique was applied to produce the levels of Ile and keep the amino acid ratio with lysine. The EU was determined to account for whole body or partitioned for feather‐free body (Bff) and feather. Two distinct factorial models were adjusted, M1 and M2. The M2 model was evaluated for one or two EU, being denominated as M2 and M3. When the efficiency was partitioned, the values of 53% and 69% for feather and Bff were determined. The optimal Ile intake estimated for each model were of 275, 908, 1,412 mg of Ile/bird/day (M1); 258, 829, 1,321 mg of Ile/bird/day (M2); and 284, 835, 1,288 mg of Ile/bird/day (M3) for initial, grower and finisher phases respectively. The EU partitioned for feather‐free body and feather reduced the biased of the model M3. Overall, higher values of Ile intake are estimated when model M1 is used, which may be the difference in account for body weight gain (M1) or only protein gain (M2 and M3) to estimate the amount of amino acid required for broiler. 相似文献
99.
100.
Denise S. Okano Jurandy M. Penitente‐Filho Victor E. Gomez Len Paula P. Maitan Camila O. Silveira Bruna Waddington Edgar A. Díaz‐Miranda Eduardo P. da Costa Simone E. F. Guimares Jos D. Guimares 《Reproduction in domestic animals》2019,54(3):604-612
This study aimed to assess characteristics of bovine cryopreserved sperm and evaluate its relation to field fertility in fixed‐time artificial insemination (FTAI). Semen samples of 16 bulls were used to inseminate 811 Nellore cows, and four of these bulls were also used to inseminate 101 Nellore heifers. Samples of the same ejaculate used for FTAI from each bull were analysed in the laboratory after thawing. Sperm motility and vigour were subjectively assessed by light microscope, and integrity of the plasma and acrosome membranes, and H2O2 production were evaluated by flow cytometer. Relation among sperm characteristics and pregnancy rate of cows and heifers were evaluated by univariate and multivariate logistic regression. Subjective sperm motility and vigour did not affect the probability of pregnancy in cows or heifers. In univariate analysis for pregnancy in cows, sperm traits related to acrosome injury positively affected probability of pregnancy mainly when associated with plasma membrane integrity; H2O2 production seems to be less important than plasma membrane integrity in affecting probability of pregnancy. In multivariate analysis, sperm traits related to injured acrosome positively affected probability of cow and heifer pregnancies while intact acrosome was negatively related to cow pregnancy. Intact plasma membrane and high H2O2 production were positively related to cow pregnancy but negatively related to heifer pregnancy. Results suggest that a capacitation‐like status of the acrosome may benefit probability of pregnancy in cows. 相似文献