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1
artículo
Publicado 2021
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Our study provides information on the breeding and biometrics of Rusty-Margined Flycatcher Myiozetetes cayanensis in southwest Brazilian Amazonia. Myiozetetes cayanensis is distributed from Central America until north of South America. We made observations on reproduction and captures of this species in a terra firme forest fragment in the state of Acre, between 1999 and 2020 and we evaluated the breeding season in Brazil through citizen science data. We monitored nine nests between 2012 and 2020, built at a mean height of 1.8 m above ground. Clutch size was two, three or four eggs, incubated for 15 days. We monitored the development of six nestlings: minimum hatch weight was 2 g and young fledged with a mean mass of ca. 25.5 g. The constant growth rate (K) of nestlings was 0.18 with a growth asymptote of 22.8 g. Daily survival rate was 90% and 100% during the incubation and nestling per...
2
artículo
Publicado 2020
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Population growth, climate change and global warming are the great challenges facing agriculture in the 21st century. Therefore, it is necessary to increase the efficiency of selection of new varieties in plant breeding programs. In this regard, flow cytometry has proven to be a very powerful tool to speed-up selection processes in plant breeding because of its versatility and capacity to evaluate large populations.
3
artículo
Publicado 2020
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Population growth, climate change and global warming are the great challenges facing agriculture in the 21st century. Therefore, it is necessary to increase the efficiency of selection of new varieties in plant breeding programs. In this regard, flow cytometry has proven to be a very powerful tool to speed-up selection processes in plant breeding because of its versatility and capacity to evaluate large populations.
4
artículo
A survey was conducted in July 2004 to 160 families rearing Guinea pigs in the district of Santa Cruz, Cajamarca, with the aim of characterizing the production system of these animals. Men were more than 50 years of age (44.6%) and wives were mainly between 31 to 50 years old (42%). Primary school was the main grade of instruction. The main labour activity of the head of the family was agriculture (95.4%) and housekeeping for women (97.2%). Raising guinea pigs was mainly driven by the housewife under a family or traditional system. There were 20.4 guinea pigs on average per family, reared regardless of class, sex and age, preferably in the kitchen (88.8%), free (73.8%) or in pools (21.9%). Feeding was based on forages, weeds and kitchen waste. The main diseases reported were ectoparasites (90.1%) and the «plague» (76%). Guinea pigs were used for consumption and sale (71.2%) or only for...
5
artículo
Publicado 2020
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Molecular markers are DNA sequences that can be used to detect genetic variations associated with economically important traits in agriculture, so that they can be used by plant breeders as selection tools, increasing the efficiency of the traditional process, since the genotype of morphologically similar individuals excluding the influence of the environment. Molecular markers have been identified as a useful tool in the selection of superior genotypes; they have been used extensively in gene mapping, both for qualitative and quantitative traits and are also useful, to identify economically important traits in the breeding population and their subsequent manipulation in a short time. Plant breeding through marker assisted selection (MAS) has enormous potential to improve the efficiency of conventional methods. Agricultural biotechnology allows establishing an approximation between the p...
6
artículo
Se estudió 18 razas de palomos buchones, españolas e iberoamericanas, a partir de la evaluación de 28 características morfológicas en base al principio de parsimonia usando el método de Fitch para el análisis cualitativo, y se generó un dendrograma de clusters por el método de varianza mínima entre los grupos de Ward para el análisis cuantitativo. Se detecta una cierta lógica en los árboles obtenidos, pero las relaciones no se manifiestan con claridad. El Índice de Consistencia fue de 0.38 y el Índice de Retención de 0.412, lo que indica un ajuste medio entre los datos y el cladograma. Los resultados indican que algunas de las características morfológicas podrían no ser informativas, o bien, que datos complementarios, como los relacionados con el comportamiento, podrían proporcionar una mejor información para la construcción de un árbol de clasificación lógica pa...
7
artículo
This review is based on the publication «Definition of breeds of alpacas and llamas», by Animal Genetic Resources journal, which places the alpaca at the primary level in the evolution of domestic animal breeds. and makes a review of the domestication of the alpaca, the treatment received during the conquest and colonialism, the inclusion of the alpaca fibre in the international textile market, the technical management during the Republic until the present, first in large farms (haciendas), then in the associative companies and currently in medium-sized properties and in State institutions and universities. Management testimonies are also presented with figures from some producers and finally the morphological differential characters and the fibre structure that characterizes and defines the Suri and Huacaya breeds.
8
artículo
Publicado 2017
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This study aimed to discuss the results of a rostrotentorial decompressive craniotomy performed in a ram with had severe neurological signs. The patient had a clinical picture of right paresis product of a left hemisphere syndrome. A computerized axial tomography (CAT) was conducted and a tumour was found in the left cerebral hemisphere. In order to extend the productive life of the animal, given his value as a sire, a decompressive craniotomy was performed. Part of the cranial vault was dissected to provide more space to the brain and relieve intracranial hypertension caused by this pathology. Once recovered from anaesthesia, the animal presented a remission of neurological signs. The patient did not present the previous compulsive circling behaviour, ataxia and head-pressing behaviour. The patient remained under observation for a period of 20 days, during which he presented good temper...
9
artículo
Relationships among 18 Spanish and Iberoamerican pouter pigeon breeds were studied using data from 28 morphological characteristics based on the parsimony principle by the Fitch method for the qualitative analysis. A cluster dendogram was generated by the minimum variance between Ward groups for the quantitative analysis. Some logic in the trees was found but no clear relationships between breeds were observed. The value of Consistency Index was 0.38 and for the Retention Index was 0.416, indicating a medium fit between data and cladogram. The results showed that some of the morphological characteristics could not be informative or that complementary traits such behavioral ones would give better information in the construction of a logical classification tree for pouter pigeon breeds.
10
artículo
Publicado 2017
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This study aimed to discuss the results of a rostrotentorial decompressive craniotomy performed in a ram with had severe neurological signs. The patient had a clinical picture of right paresis product of a left hemisphere syndrome. A computerized axial tomography (CAT) was conducted and a tumour was found in the left cerebral hemisphere. In order to extend the productive life of the animal, given his value as a sire, a decompressive craniotomy was performed. Part of the cranial vault was dissected to provide more space to the brain and relieve intracranial hypertension caused by this pathology. Once recovered from anaesthesia, the animal presented a remission of neurological signs. The patient did not present the previous compulsive circling behaviour, ataxia and head-pressing behaviour. The patient remained under observation for a period of 20 days, during which he presented good temper...
11
artículo
The aim of this study was to determine the association of fascioliasis with the breeding of animals, housing characteristics and food consumption of children in the district of Santa María de Chicmo, Apurimac, Peru. Serological samples were taken from 493 children aged 6 to 16 years, males and females, with the informed consent of their parents. The prevalence, determined by the immunoblot technique was 5.3% (95% CI = 3.2% -7.4%, 26/493). The univariate analysis showed that the breeding of cattle and cats, and raising three or more pigs were factors associated with fascioliasis. The breeding of more than five sheep resulted as a protection factor. Fascioliasis in children was not associated with the characteristics of the dwellings or the consumption of food. It is concluded that the district of Santa María de Chicmo is mesoendemic for fascioliasis in children, and that the rearing of ...
12
tesis de maestría
Busca entender los patrones de forrajeo de la pardela cenicienta durante el periodo de precrianza. Este periodo es uno de los menos estudiados en la pardela cenicienta (Calonectris diomedea). Es especialmente en este periodo que los efectos de la inversión energética entre sexos deberían resultar en dimorfismos en la ecología de forrajeo (las hembras tienen que lidiar con el costo energético de producir un huevo mientras que los machos se avocarán a la defensa de un nido de otros machos). Este estudio se enfocó en dos aspectos que podrían influenciar la ecología de forrajeo de esta especie: la calidad de nido y la productividad del océano. Los nidos fueron caracterizados por sus características físicas, éxito reproductivo previo y la frecuencia de ocupación actual. Se equiparon 33 individuos con GPS para registrar sus patrones de conducta de forrajeo y analizamos estos dato...
13
artículo
This study aimed to genetically evaluate part of the breeding population of guinea pigs, Peru genotype, of the Experimental Station of Instituto Nacional de Innovación Agraria, Ayacucho, Peru, for two parameters: body weight at slaughter (WL) and growth rate (SG). Productive data of of the animals and their family members were collected (n=162 animals), plus environmental factors such as sex, type of birth, month of birth and parturition weight of the mother. The statistical significance on the studied variables was conducted by a fixed effects model. The estimation of breeding values of the offspring wad done by the animal model-BLUP unicharacter. The model included fixed effects that had statistical significance plus the derivative random effects of animal genetic factors. The components of (co) variance included in the model and computational algorithms were solved using the software...
14
artículo
Every year the government and sheep farmers imported, mainly from Chile, to improve the herds grazing in the highlands of the Andes, which is a significant sum of money which strongly affects the economy of the herds in the region. It was therefore necessary to study results obtained from these imports and if possible give new insights to make better use of the imported cattle.
15
artículo
Quantitative characters based on 19 morphostructural variables from 23 adult females of the newly recovered «Cabra Catalana» goat were studied. The sample corresponded to animals located in the same foundational herd in Catalunya, NE Spain. Studied animals presented medium homogeneity and low harmony degrees. It is suggested that breed standards must be prepared in order to officially recognize this population.
16
artículo
Article dealing with the main research findings derived from the study of significant visions of men about the practice of their paternity after divorce, from their own identity constructions of masculinity. The children’s care is the result of sociocultural assignations and power relations in addition to conjugal conflicts conducted wrongly (and legal limitations); this implies for them the impossibility -imposed- to participate in the breeding of their children. The transgression to law regulations related to father and children frequently results in the reduction of the parental link towards diffuse contacts that permit opportunities for manipulations; obstruction and elimination of the father's role, denying the mutual affective necessity and damaging the children's right to rely on both parents for their harmonious breeding.
17
artículo
Publicado 2017
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A survey was conducted in order to study changes in body measurements in the Chiapas sheep breed. For this purpose 66 males and 79 females of various ages were measured: body weight, chest girth, knee perimeter, cannon perimeter, coronne perimeter, hock perimeter and ear length. The study reflects a regional change according to age, which are not isometrical. Body weight and chest girth are the most discriminative variables, which presented identical age regression trajectories for both sexes (F=1.006, p=0.317). Although body weight in adult male (>12 months, n=56) was greater than those of females (n=64) (U=1320, p=0.014), and no differences appeared for chest girth (U=1720, p=0.704), regression trajectories for both traits appeared similar.
18
artículo
Quantitative characters based on 19 morphostructural variables from 23 adult females of the newly recovered «Cabra Catalana» goat were studied. The sample corresponded to animals located in the same foundational herd in Catalunya, NE Spain. Studied animals presented medium homogeneity and low harmony degrees. It is suggested that breed standards must be prepared in order to officially recognize this population.
19
artículo
Article dealing with the main research findings derived from the study of significant visions of men about the practice of their paternity after divorce, from their own identity constructions of masculinity. The children’s care is the result of sociocultural assignations and power relations in addition to conjugal conflicts conducted wrongly (and legal limitations); this implies for them the impossibility -imposed- to participate in the breeding of their children. The transgression to law regulations related to father and children frequently results in the reduction of the parental link towards diffuse contacts that permit opportunities for manipulations; obstruction and elimination of the father's role, denying the mutual affective necessity and damaging the children's right to rely on both parents for their harmonious breeding.
20
artículo
Publicado 2017
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A survey was conducted in order to study changes in body measurements in the Chiapas sheep breed. For this purpose 66 males and 79 females of various ages were measured: body weight, chest girth, knee perimeter, cannon perimeter, coronne perimeter, hock perimeter and ear length. The study reflects a regional change according to age, which are not isometrical. Body weight and chest girth are the most discriminative variables, which presented identical age regression trajectories for both sexes (F=1.006, p=0.317). Although body weight in adult male (>12 months, n=56) was greater than those of females (n=64) (U=1320, p=0.014), and no differences appeared for chest girth (U=1720, p=0.704), regression trajectories for both traits appeared similar.
