Results 141 to 150 of about 605 (165)
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The presence of small ruminant lentiviruses in Mexican Pelibuey sheep
Theriogenology, 2016The transmission frequency of small ruminant lentiviruses (SRLVs) through the placenta is controversial and may be associated with breed susceptibility. In Mexico, SRLV infections in sheep have been poorly studied. This work explores the presence of antibodies and proviral DNA in Mexican Pelibuey sheep. Enzyme-linked immunosorbent assays (ELISAs; three
Sánchez, José H. +9 more
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Circannual estrous variations and ovulation rate in Pelibuey ewes
Small Ruminant Research, 1992Abstract Twelve cycling, mature ewes were kept with two vasectomized rams under constant nutrition maintenance conditions to study annual estrous activity and ovulation. Mean ovulation rate per month was 1.2 corpora lutea (CL) /ewe and 1.72 CL/ewe ovulating, mean proportion of ewes ovulating per month was 69%; proportions of ewes ovulating varied ...
A. Gonzalez +3 more
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Estimation of mature live weight of Mexican Pelibuey sheep
Proceedings of the British Society of Animal Science, 2007Current nutritional models as the CNCPS-sheep (Cannas et al., 2004) are built with the possibility to consider breed effects. An important effect included in the prediction of live weight gain is the maturity index of the animal (the actual weight of the animal in relation to their adult weight). During a concurrent evaluation of the CNCPS-sheep model,
F. Duarte +2 more
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Phenotype Characterization of Pelibuey Native Lambs Resistant to Haemonchus contortus
Annals of the New York Academy of Sciences, 2008Specific phenotypic traits of the blood‐feeder nematode Haemonchus contortus were characterized on Pelibuey native, cross‐breed sheep in a tropical region of Mexico with background of anthelmintic problems. Data were collected on 4‐month‐old lambs (n= 63) and analyzed weekly in three stages: stage 1 (S1, not infected (0–3 weeks)); S2, first infection ...
Jorge L, Gonzalez +7 more
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Seasonal variations in circulating testosterone and luteinizing hormone in Pelibuey lambs
Small Ruminant Research, 1992Abstract This study was carried out to determine seasonal variations in circulating testosterone and luteinizing hormone levels in ram and castrate male Pelibuey lambs. Body weights at the end of the study were 36.9 ± 1.2 kg for the intact and 38.8 ± 1.6 kg for the castrate lambs.
A. González +3 more
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Daily production and testicular and epididymal sperm reserves of Pelibuey rams
Theriogenology, 1994Abstract Eleven Pelibuey rams 3.5 to 4 yr of age and weighing 48 to 60 kg, were used to determine daily sperm production, testicular sperm production and epididymal sperm reserves. Previous to castration, semen was collected from each animal twice daily for 60 consecutive days.
J. Martínez, T. Limas, N. Perón
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Determination of carcass traits in Pelibuey ewes using biometric measurements
Small Ruminant Research, 2017Abstract The objective of this study was to evaluate de relationship between biometric measurements (BM) and carcass traits of 28 Pelibuey ewes. The BM were obtained the day before the slaughter and included height at withers (HW), rib depth (RD), body diagonal length (BDL), body length (BL), pelvic girdle length (PGL), rump depth (RuD), rump height (
Emmanuel Bautista-Díaz +8 more
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FecGE mutation in pelibuey sheep
Animal Genetics, 2020Elizabeth Pérez‐Ruiz +5 more
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Runs of Homozygosity and Gene Identification in Pelibuey Sheep Using Genomic Data
Diversity, 2022Wilber Hernández Montiel +2 more
exaly