Carcass tissue composition in light lambs: Influence of feeding system and prediction equations

Carrasco, S.; Ripoll, G.; Doblado, Begoña Panea; Álvarez-Rodríguez, J.; Joy, M.

doi:10.1016/j.livsci.2009.06.006

Cited by 23 publications

(30 citation statements)

References 41 publications

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“…These results are similar to Carrasco et al (2009) in lambs fed on grazing, indicating that a lower fat deposit may be associated with limited energy in the diet of the animals.…”

Section: Resultssupporting

confidence: 77%

Corporal Composition and Characteristics of Carcass of Araucano Creole Lambs

et al. 2010

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SUMMARY:Once livestock is slaughtered the carcass of body obtained represents the main commercial product, and is valued in terms of quality. The aim of this work was to characterize and evaluate the carcasses of Araucano creole lambs. Thirteen Araucano lambs were slaughtered at 221± 15 days of age weighing 32± 2 Kg. The hot carcass was weighed and after 24 hours at 4ºC the cold carcass was weighed. The characteristics of conformation, fat cover and regional composition of the carcass were evaluated according to Chilean regulation standards. The tissue composition of the back was also determined, in its three components (muscle, bone and fat). The commercial yield of the carcass was 51.14% and losses due to dehydration of the carcass were recorded at 3%. The carcasses were characterized as 77cm long and 24cm wide at chest level. According to the thickness of muscle and fat, they were qualified as lean carcasses and the area of Longissimus dorsi muscle was an average of 15 cm 2 . The regional composition of the carcass presented a high percentage of lean pieces, forequarter (38.9%) and let (28.9%) with 59.5%) of the regional composition being the first category pieces with a high commercial value. The carcasses of the Araucano creole lambs were classified as heavy, of average length with a yield greater than 50% of good conformation and average fat cover. These characteristics indicate that this cattle can be defined as an attractive genetic resource for meat production in Southern Chile.

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“…These results are similar to Carrasco et al (2009) in lambs fed on grazing, indicating that a lower fat deposit may be associated with limited energy in the diet of the animals.…”

Section: Resultssupporting

confidence: 77%

Corporal Composition and Characteristics of Carcass of Araucano Creole Lambs

et al. 2010

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“…Lambs conformation scores were within the typical range for the light lamb category (Sanz et al, 2008;Carrasco et al, 2009a). This results did not support the idea that lambs raised in a grazing system without any supplementation have an inferior conformation score (Murphy et al, 1994;McClure et al, 1995;Priolo et al, 2002b;Joy et al, 2008b).…”

Section: Animal Performance and Carcass Characteristicsmentioning

confidence: 74%

“…These measurements were used to calculate the following ratios: pelvic limb compactness (pelvic limb weight/pelvic limb length), chest roundness index (maximum carcass width/chest depth), hindquarter width/pelvic limb length index, hindquarter width/carcass internal length index and carcass compactness (cold carcass weight/carcass internal length) (Colomer-Rocher et al, 1988;Carrasco et al, 2009a).…”

Section: Slaughter Carcass Measurements and Muscle Sampling Proceduresmentioning

confidence: 99%

The capability of alfalfa grazing- and concentrate-based feeding systems to produce homogeneous carcass quality in light lambs over time

Ripoll

Álvarez-Rodríguez

Sanz

et al. 2014

Span. j. agric. res.

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The effects of grazing on the carcasses and meat of light lambs are unclear, mainly due to variations in weather conditions and pasture production, which affect the growth of lambs and the quality of their carcasses. The aim of this study was to evaluate the effect of feeding systems, which varied in intensification due to the use of concentrate, on the growth and carcass traits of light lambs and the capability of these feeding systems to produce homogeneous lamb carcasses over the course of several years. The average daily weight gain of grazing lambs, but not lambs fed indoors was affected over years. The colour of the Rectus abdominis muscle and the amount of fat were more variable in grazing lambs (from 2.7 to 6.3) than indoor lambs (from 4.5 to 5.1). Grazing feeding systems without concentrate supplementation are more dependent than indoor feeding systems on the year. This climatologic dependence could lead to slaughter of older grazing lambs (77 days) to achieve the target slaughter weight when temperatures are low or the rainfall great. All feeding systems evaluated produced light lambs carcasses with a conformation score from O to R- that is required by the market. Even the potential change in fat colour found in both grazing treatments was not enough to change the subjective evaluation of fat colour.

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“…Factors influencing carcass characteristics have been widely studied in other species, such as lamb (Sañudo et al, 1997;Santos-Silva et al, 2002;Pérez et al, 2007, Carrasco et al, 2009) and cattle (Piedrafita et al, 1999(Piedrafita et al, , 2003Albertí et al, 2000Albertí et al, , 2001Albertí et al, , 2007Purchas et al, 2002) and has been shown that breed is an important source of variation. Behind this, correlacionado con el rendimiento a la canal y el grado de engrasamiento.…”

Section: Introductionmentioning

confidence: 99%

Influence of breed, milk diet and slaughter weight on carcass traits of suckling kids from seven Spanish breeds

Doblado

Ripoll

Horcada³

et al. 2012

Span. j. agric. res.

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This experiment aimed to describe the influence of production system on the following characteristics from seven Spanish goat breeds: carcass weight, dressing percentage, head weight, viscera weight, kidney fat weight, fatness score, carcass length, leg length, rump perimeter, rump width, kidney fat colour and tissue composition of shoulder. Experiment involved 201 male, single-birth suckling kids from five meat and two dairy breeds. Animals from meat breeds were slaughtered at two targets carcass weights (light, 4 kg; heavy, 7 kg). In dairy breeds, half of the animals were reared with dam's milk and the other half with a milk replacer and all of them were slaughtered at light weight (4 kg). Statistics consisted in two GLM, means for each variable, a PCA to study relationships between variables and a discriminant analysis to compare breeds. In dairy breeds, breed had greater influence than milk diet, with breed effect being particularly strong for kids that were fed with natural milk. In meat breeds, slaughter weight was more important than breed and many significant interactions were found between both effects. All carcass traits were closely related to each other and to slaughter weight. Slaughter weight was also positively related to dressing percentage and to fatness degree. Discriminant analysis explained 76.1% of variability and separated dairy breeds, with well-fattened, medium-shaped carcasses, from meat breeds, with good conformations and medium fatness degrees. Hence, carcass traits were able to group breeds by diary or meat type.Additional key words: carcass tissue composition; fat colour; goat; morphometric measurements. Resumen Influencia de la raza, tipo de lactancia y peso al sacrificio sobre las características de las canales de cabritos lechales de siete razas españolasEl experimento describe la influencia del sistema de producción sobre las siguientes características de la canal de cabritos de siete razas españolas: peso de canal, de la cabeza, de las vísceras y de la grasa renal, rendimiento a la canal, engrasamiento, longitud de la canal y de la pierna, perímetro y anchura de la pierna, color de la grasa renal y composición tisular de la espalda. Se utilizaron 201 cabritos machos, de parto simple, de cinco razas cárnicas y dos lecheras. Los animales de las razas cárnicas se sacrificaron a dos pesos de canal objetivo (ligeros, 4 kg; pesados, 7 kg). En las razas lecheras, la mitad de los cabritos se alimentaron con leche materna y la otra mitad, con un lacto-reemplazante y todos los animales fueron sacrificados al peso ligero (4 kg). En las razas lecheras, la raza fue más importante que el tipo de lactancia, especialmente en los cabritos alimentados con leche natural. En las razas cárnicas, el peso tuvo mayor influencia que la raza, aunque se observaron numerosas interacciones entre ambos efectos. Todas las variables estuvieron estrechamente relacionadas entre sí y con el peso al sacrificio y éste ultimo estuvo además positivamente

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Carcass tissue composition in light lambs: Influence of feeding system and prediction equations

Cited by 23 publications

References 41 publications

Corporal Composition and Characteristics of Carcass of Araucano Creole Lambs

Corporal Composition and Characteristics of Carcass of Araucano Creole Lambs

The capability of alfalfa grazing- and concentrate-based feeding systems to produce homogeneous carcass quality in light lambs over time

Influence of breed, milk diet and slaughter weight on carcass traits of suckling kids from seven Spanish breeds

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