Post-natal sexual development of testis and epididymis in the rabbit: Variability and relationships among macroscopic and microscopic markers

García-Tomás, M.; Sánchez, J.; Piles, M.

doi:10.1016/j.anireprosci.2008.01.019

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The lower percentage of the urogenital tract in Blind compared to F2F rabbits can be explained considering the lower live weight at slaughter of the first group. In fact, Garcia-Tomas et al [23] reported a positive correlation between live and urogenital tract weights in male rabbits from 4 to 33 weeks of age, showing that live weight mainly affected the testis weight. The lower weight at slaughter can also be responsible of the lower percentage of the skin in the Blind group.…”

Section: Discussionmentioning

confidence: 99%

Mirrors Can Affect Growth Rate, Blood Profile, Carcass and Meat Traits and Caecal Microbial Activity of Rabbits Reared in a “Small Group” Free-Range System

Musco

Lombardi

Addeo

et al. 2019

Animals

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Simple SummaryThe rabbit farming sector is going through a difficult period. The reduction in the consumption of rabbit meat and the increased attention paid by consumers to the welfare of farmed animals require the adoption of farming methods that are as “natural” as possible and at the same time may ensure the maintenance of good growth performance. In this sense, free-range breeding on the ground and in colonies allows the rabbits to express more natural behaviour, but it also presents some negative aspects such as decreased growth performance, higher energy expenditure of subjects due to a higher locomotion activity, and the need for a larger rearing space. Mirrors can represent a valid solution by improving the rabbits welfare and at the same time ensuring good growth performance and carcass quality traits.AbstractThe aim of this work was to propose a model of free-range raising for rabbit able to maximize the animal welfare and at the same time the productive performances through the use of mirrors. A total of 81 rabbits were allocated into free-range areas and divided into three groups (nine replicates per group): in the first group (face to face, F2F), the rabbits of each replicate could see each other. In the second group (blind) each replicate was isolated from the others; in the third group (mirrors), the replicates were divided as for the Blind group but two mirrors were placed in a corner of the perimeter. The blind group rabbits showed the lowest final weight (p < 0.05), while rabbits from the mirrors groups showed the best FCR and net dressing out values. The blind group showed the highest production of total short chain fatty acids, acetate (p < 0.05) and propionate (p < 0.01). The F2F rabbits showed higher levels of creatine phosphokinase and lactate dehydrogenase and lower values of blood glucose than those of the other groups, due to the higher locomotion activity. The use of mirrors can improve rabbit’s growth performance and carcass traits by lowering the rabbit’s locomotion activity in comparison to the other tested systems.

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Section: Discussionmentioning

confidence: 99%

Mirrors Can Affect Growth Rate, Blood Profile, Carcass and Meat Traits and Caecal Microbial Activity of Rabbits Reared in a “Small Group” Free-Range System

Musco

Lombardi

Addeo

et al. 2019

Animals

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“…The 1 st principal component is the linear combinations of all variables showing the maximum variation among the samples. The 2 nd , 3 rd and further components are similarly linear combinations representing the next highest variation, irrespective of those represented by previous components (García-Tomás et al, 2009).…”

Section: Statistical Analysesmentioning

confidence: 99%

Litter size components traits in two Algerian rabbit lines

et al. 2021

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The aim of this study was to estimate the limiting litter size components in rabbit females from a Synthetic line (n=32) and a Local population (n=34). Ovulation rate, number of implanted and live embryos were counted by laparoscopy at 12 d after mating. Prolificacy (total newborn, number born alive and mortality) and embryonic, foetal and prenatal survival at day of birth of the 3rd gestation were measured. The analysed traits were body weight of the female at mating, ovulation rate, implanted, live and resorbed embryos, embryonic, foetal and prenatal survival, as well as total newborn, number born alive and mortality at birth. Synthetic line females had a higher ovulation rate compared to the Local population (11.03±0.23 vs. 8.41±0.23 corpora lutea; P<0.0001). Synthetic line displayed a higher number of implanted embryos (10.00±0.25 vs. 7.85±0.25 embryos; P<0.0001). No difference was found between groups for number of resorbed embryos. Similar embryonic, foetal and prenatal survival rates were reported between the Synthetic line and the Local population. Additionally, total newborn was higher in the Synthetic line than in the Local population (+1.46 kits; P<0.05). A principal components analysis was performed. The first four principal components (PC) explained more than 90% of the total variation in both lines. Total newborn, number born alive and live embryos were the main variables defining the 1st PC. Resorbed embryos and foetal survival were located in the 2nd PC. Ovulation rate and embryonic survival were the predominant variables defining the 3rd PC. The body weight of females was located in the 4th PC. The phenotypic correlation between total newborn and its components were high and positive in both lines, except for ovulation rate and total newborn, where it was moderate in Synthetic line. In conclusion, the females from Synthetic line have a higher total newborn than those from Local population, as a consequence of a higher number of released oocytes and embryos that successfully reach implantation. However, a higher uterine crowding in Synthetic line seems to limit survival of foetuses that reach term of gestation, while ovulation rate is the principal limiting factor of total newborn in Local population.

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“…Rabbit bucks reach sexual maturity at approximately 5 months and semen quality generally decreases in older rabbit bucks (> 2 years; Boiti et al, 2005). García-Tomás et al (2009) found that, between 4.6 and 7.5 mo of age, males from the Caldes line still had an important increase in ejaculate volume and individual motility of the spermatozoa suggesting that they could have not totally reached sexual maturity according to their testis size and the percentage of seminiferous tubules with presence of lumen during that period. However, according to the fertility results of the current study, it seems that fertility of males decreases with Age because the average male age of the ejaculates with the lowest fertility is higher than the average male age of those with the highest fertility (Figure 2, Panel A).…”

Section: Resultsmentioning

confidence: 97%

Predicting fertility from seminal traits: Performance of several parametric and non-parametric procedures

et al. 2013

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Post-natal sexual development of testis and epididymis in the rabbit: Variability and relationships among macroscopic and microscopic markers

Cited by 5 publications

References 14 publications

Mirrors Can Affect Growth Rate, Blood Profile, Carcass and Meat Traits and Caecal Microbial Activity of Rabbits Reared in a “Small Group” Free-Range System

Mirrors Can Affect Growth Rate, Blood Profile, Carcass and Meat Traits and Caecal Microbial Activity of Rabbits Reared in a “Small Group” Free-Range System

Litter size components traits in two Algerian rabbit lines

Predicting fertility from seminal traits: Performance of several parametric and non-parametric procedures

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