Productive and reproductive performance of Romney Marsh and Merino Branco sheep in the Azores under different feeding regimens

Rosa, H.J.D.; Ventura, P. F. M.; Sousa, J. T. P. de; Moreira, Daniel C.; Borba, Alfredo Emílio Silveira de; Rego, Oldemiro Aguiar do

doi:10.1016/j.smallrumres.2005.10.009

Cited by 2 publications

(5 citation statements)

References 3 publications

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“…However, the DG from birth to 100 days of age and LW100 were only slightly higher in male lambs (MLs) as compared to FLs. In contrast, the DG from birth to the slaughter and LWS were markedly (P < 0.05) higher in MLs than in FLs, which is in line with findings of Rosa et al (2007) and Facciolongo et al (2018). Besides that, the average age at slaughter was comparable in both genderes (121 and 123 days in MLs and FLs, resp.).…”

Section: Resultssupporting

confidence: 84%

“…II), the gender did not have significant effect on dressing percentage (DP), while its slightly higher value was found in MLs, which is in accordance with Kuchtík et al (2011). In contrast, Rosa et al (2007) found in both genders of the Romney Marsh lambs a higher DP compared to findings of the present study. Also Mioč et al (2013) found significantly higher DP in both genders of the Dalmatian Pramenka lambs than in the present study.…”

Section: Resultssupporting

confidence: 77%

“…In contrast to MLs, FLs of the present study also showed a positive correlation (P < 0.05) between BW0 and DG from birth to 100 days of age. In addition, regarding growth intensity of lambs in the present study, the DGs in both lamb genders, despite their relatively extensive nutrition, were markedly higher than those found by Rosa et al (2007) in the Romney Marsh lambs and by Kuchtík et al (2010) in lambs of meat type breeds.…”

Section: Resultscontrasting

confidence: 49%

“…With the exception of the leg proportion, the weights and proportions of leg and shoulder were significantly higher in MLs compared to FLs, which is in accordance with Kaič et al (2016). In contrast, Sabbioni et al (2016) reported in FLs slaughtered at 6 to 12 months of age the higher proportions of shoulder and leg, while Rosa et al (2007) found higher proportions of the leg in the FLs of Romney March breed. However, the differences between the proportions of shoulder and leg found in the present study and the proportions of these cuts in the above mentioned studies were very small (2-3%).…”

Section: Resultsmentioning

confidence: 77%

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Effect of Gender on Growth and Carcass Traits of Romney Marsh Lambs

Kuchtík¹,

Konečná²,

Šeligová³

et al. 2020

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The aim of present study was to assess the effect of the gender on growth and carcass traits in lambs of the Romney Marsh breed. The experimental animals were male lambs (n = 12) and female lambs (n = 12) of the Romney Marsh breed. All lambs were twins and all their mothers were on the second parity. With regard to body weights and daily gains (DGs), the gender had a significant effect only on birth weight and DG from birth to the slaughter, while in all monitored intervals the DGs were higher in male lambs (MLs). The lamb gender did not have a significant effect on the easy of lambing, body condition score, depth of musculus longissimus lumborum et thoracis (DMLLT) and thickness of backfat (TBF). However, values for DMLLT and TBF were higher in female lambs (FLs), which in case of DMLLT was not expected. Regarding the carcass traits, the gender had a significant effect only on the weights of kidney, kidney fat, leg and shoulder and on the proportions of kidney fat and shoulder. Interestingly, the gender had no significant effect on the conformation and fatness, while slightly better carcass conformation and slightly higher fatness were found in FLs. It can be concluded that FLs of the Romney Marsh breed showed comparable values for both the growth and carcass traits with MLs. Moreover, a slightly higher fatness of FLs is a prerequisite for better juiciness and tenderness of their meat, when this fact can be considered as a benefit in the marketing.

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Section: Resultssupporting

confidence: 84%

Section: Resultssupporting

confidence: 77%

Section: Resultscontrasting

confidence: 49%

Section: Resultsmentioning

confidence: 77%

See 2 more Smart Citations

Effect of Gender on Growth and Carcass Traits of Romney Marsh Lambs

Kuchtík¹,

Konečná²,

Šeligová³

et al. 2020

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…Also, in some foreign breeds like the Churra Galega Bragançana, Jiménez et al (2005) registered weights that were greater in lambs from single births, but in both of these breeds, they were also lower than those recorded in the current study (3.9 and 3.2 kg, for single and double births, respectively). Furthermore, lower birth weights were observed by Ampueda and Combellas (2000) in the West African breed (2.5-3.8 kg), and also by Rosa et al (2007) in the Merino Branco breed (3.82 kg), with values similar to those found in the Romney Marsh breed (4.25 kg).…”

Section: Effect Of Feeding Systems On Productive and Reproductive Persupporting

confidence: 56%

Effect of feeding systems on live-weight, reproductive performance, milk yield and composition, and the growth of lambs in native Spanish Ojalada sheep

Miguel-Romera

Calvo-Ruiz

Ciria-Ciria

et al. 1970

Span. j. agric. res.

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To produce lambs of the Ojalada breed, included within the Protected Geographical Indication "Lechazo de Castilla y Leon", three feeding systems were compared (40 ewes/treatment): a) IND + CH + C, ewes kept indoors and fed chopped straw plus concentrate, prepared on location and distributed mechanically (total mixed ration; TMR); b) IND + W+C, ewes kept indoors and fed whole straw in the form of large bales, plus concentrate (TMR); and c) GR + C, free-range grazing plus concentrate (control group). Live-weight, reproductive endpoints, milk production and composition (10 sheep from single lambing/treatment), and growth of lambs up to 35 days were assessed. Live-weight of ewes from the IND + CH + C group were similar to those in the GR + C group (p > 0.05). Treatments did not differ for fertility or prolificacy, except for fecundity in the IND + W + C group compared to values for the IND + CH + C and GR + C groups. The quantity of milk produced through 35 days did not differ (~1,300 mL d -1 ), with peak production in all three groups in the third week of lactation (~1,500 mL d -1 ). Milk chemical composition generally did not differ among treatments; only ewes in the IND + CH + C group presented greater protein content in the third week of lactation. Although treatments did not differ in live-weight at birth to 35 days, IND + CH + C lambs differed in average daily gains, reaching 9 kg of live-weight (minimum weight for slaughter) at ages younger than the other groups whether from simple or double lambing. We can conclude that this type of production, keeping sheep closed and fed a TMR, is possible.Additional key words: barley straw; ewe; grazing; local breed. ResumenEfecto del sistema de alimentación sobre el peso vivo, los parámetros reproductivos, la producción y composición de la leche y el crecimiento de los corderos en ovejas de la raza autóctona española Ojalada Para producir corderos de la raza Ojalada, incluida en la Indicación Geográfica Protegida "Lechazo de Castilla León", se compararon tres sistemas de alimentación (40 ovejas/tratamiento): a) IND + CH + C: ovejas cerradas, alimentadas con paja de cebada picada + concentrado, elaborado en la explotación y distribuido de forma mecanizada (TMR); b) IND + W + C: ovejas cerradas, alimentadas con paja de cebada entera+concentrado, en forma de pacones (TMR); c) GR + C: pasto + concentrado (grupo control). Se controló peso vivo, parámetros reproductivos, producción y composición de la leche (10 ovejas de parto simple/tratamiento), y crecimiento de los corderos hasta los 35 días. El peso vivo de las ovejas IND + CH + C fue similar al de GR + C (p > 0,05). No hubo diferencias entre tratamientos para fertilidad ni para prolificidad, la fecundidad en IND + W + C fue significativamente superior a los otros grupos. No hubo diferencias en la cantidad de leche a los 35 días (~1.300 mL d -1 ), encontrándose el pico de la producción en la tercera semana (~1.500 mL d -1 ). No se encontraron diferencias entre tratamientos en composición química, únicamente las ove...

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Productive and reproductive performance of Romney Marsh and Merino Branco sheep in the Azores under different feeding regimens

Cited by 2 publications

References 3 publications

Effect of Gender on Growth and Carcass Traits of Romney Marsh Lambs

Effect of Gender on Growth and Carcass Traits of Romney Marsh Lambs

Effect of feeding systems on live-weight, reproductive performance, milk yield and composition, and the growth of lambs in native Spanish Ojalada sheep

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