Performance and carcass characteristics of Santa Inês pure lambs and crosses with Dorper e Texel at different management systems

Garcia, Iraídes Ferreira Furusho; Costa, Tharcilla Isabella Rodrigues; Almeida, A. K.; Pereira, Idalmo Garcia; Alvarenga, Flavio A. P.; Lima, Natália Ludmila Lins

doi:10.1590/s1516-35982010000600021

Cited by 31 publications

(19 citation statements)

References 11 publications

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“…Variation in pregrazing pasture heights was not sufficient to cause large enough variations in nutritional forage to modify the HCY. The hot carcass yield obtained was close to that observed by Garcia et al (2010) for pure and crossed Santa Ines sheep only in Aruana grass pasture (41.9%), while the group that received supplementation had higher hot carcass yield. The authors attribute this result to the diet having a greater allowance of nutrients, and thus greater development of the main parts that compose the carcass (muscle, bone and fat) compared to other parts of the body.…”

Section: Discussionsupporting

confidence: 78%

Forage quality and performance of sheep in Massai grass pastures managed at pre-grazing canopy heights

Neto¹,

Difante²,

Lana³

et al. 2019

SA J. An. Sci.

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The objective of this study was to evaluate the effects of pasture height at pre-grazing of Massai grass on the quality of available forage, forage intake and the performance of lambs raised for meat production. The treatments consisted of four pre-grazing canopy heights (35, 40, 45 and 50 cm). Pastures were managed by the intermittent stocking method and 32 sheep were used. Dry matter intake (DMI) was estimated by Lipe® indicator. Green forage allowance was not affected by pre-grazing heights. There was no effect of heights on the chemical composition of the stem or the leaf blades, except for crude protein content of leaf blades, which showed an inverse linear effect. Grazing time had a quadratic response in function of canopy height. The minimum point was at 42.6 cm, with 502.9 min/day. DMI increased linearly with increasing pasture height. Average daily weight gain (ADG) and stocking rate (SR) responded linearly to pregrazing heights. Weight gain per hectare was not affected by height as a result of the compensation between SR and ADG. The increase from 35 to 50 cm in Massai grass canopy height reduces its nutritional value and individual performance and increases DMI of sheep intended for meat production.

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Section: Discussionsupporting

confidence: 78%

Forage quality and performance of sheep in Massai grass pastures managed at pre-grazing canopy heights

Neto¹,

Difante²,

Lana³

et al. 2019

SA J. An. Sci.

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“…Although the latter have low carcass conformation, Souza et al (2016) found no difference in body score of Santa Inês, ½ Dorper × Santa Inês and ¾ Dorper × Santa Inês lambs. Garcia et al (2010) reported similarity between quantitative variables of Santa Inês, Texel × Santa Inês, and Dorper × Santa Inês lambs, corroborating the results obtained in the present study, which found no difference among the groups analyzed regarding CCW, tissue composition, or fat cover.…”

Section: Discussionsupporting

confidence: 92%

Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems

et al. 2017

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-The ability of discriminating carcass characteristics of different fat cover scores of heavy carcasses, according to the European (EUS) and Brazilian (BRS) classification systems, was assessed. Fifty-six lambs, weighing between 26.25 and 46.15 kg, of the Santa Inês and crossbred Santa Inês × Dorper genetic groups were evaluated. The level of adiposity was assessed through color photography of the carcasses after refrigeration according to the EUS and BRS. The carcasses were assigned to four groups by cluster analysis according to 25 variables, namely, cold carcass weight; muscle; bone; fat; and muscle:fat and fat:bone ratios of the carcass and cuts (hindquarter, shoulder, back); kidney, pelvic, and inguinal fat; and subcutaneous fat thickness. Of the four groups obtained by cluster analysis, the scores according to the different classification systems only statistically differed between groups 1 and 4. The BRS had a higher number of variables well correlated with the scores by assessors than the groups classified by the EUS. The BRS was better correlated with tissue composition. However, most variables were better correlated with backfat thickness than the score obtained through the classification systems. Better results were obtained regarding the prediction of carcass fat by the BRS using backfat thickness or cold carcass weight. The Brazilian lamb carcass classification system better predicts tissue composition and is the best method to discriminate intermediate-fat classes when associated with cold carcass weight.Key Words: conformation, non-specialized breeds, tissue composition Revista Brasileira de Zootecnia

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“…The meat: bone ratio was in the range of 1.89:1(T 3 ), 1.92:1(T 2 ) and 2.22:1 (T 1 ) indicated that significantly (p<0.05) higher percentage of meat weight obtained in intensive system. Higher fat % in intensive farming system was observed by Garcia et al, (2010). Significantly higher fat depots were found in animals fed concentrate feed in intensive group (Ripoll et al, 2014).…”

Section: Body Condition Scores Of Deccani Lambs At Different Growth Smentioning

confidence: 85%

Productive performance, body condition score and carcass characteristics of Deccani lambs reared under different farming systems

Kochewad

Raghunandan

Rao

et al. 2018

IJAR

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The present study was carried out to assess the effect of different farming systems on productive performance, body condition score and carcass characteristics of Deccani lambs. Thirty-six weaned lambs having 3 months of age were divided into three groups with twelve lambs in each group in under intensive (T 1 ), semi-intensive (T 2 ) and extensive (T 3 ) farming systems. The comparative mean dry matter intake (kg/day) and (kg/100kg BW) was significantly (p<0.05) higher in T 1 group when compared to other groups. T 2 group had significantly (p<0.05) higher DM intake (kg/day) than T 3 group. The mean values of Average daily gains in Deccani lambs were significantly (p<0.05) higher in T 1 group compared to T 2 and T 3 groups. The feed efficiency was significantly (p < 0.05) higher in T 1 compared to T 2 , T 3 groups. Statistically significant difference was found in BCS at six months of age (p<0.05) between T 1 and T 3 groups. BCS at 9, 12 months and overall BCS, there was a significant (p<0.05) difference between T 1 and T 3 groups. T 1 group had higher pre-slaughter weight, hot carcass weight, meat %, fat% and meat: bone ratio thanT 2 and T 3 . The dressing yields were comparable. The weights of other offals (heart, kidney, spleen, testicles, blood, head and lung and trachea) were comparable. The findings of this study indicated that the intensive and semi-intensive system of rearing could be useful for mutton production. In extensive system, which is predominant in India should change its facet by enriching the grazing land resources as well by the supplementation of required plane of nutrition during growth and special life stages viz., gestation, puberty, post lambing and finisher stages for achieving optimum productivity.

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Performance and carcass characteristics of Santa Inês pure lambs and crosses with Dorper e Texel at different management systems

Cited by 31 publications

References 11 publications

Forage quality and performance of sheep in Massai grass pastures managed at pre-grazing canopy heights

Forage quality and performance of sheep in Massai grass pastures managed at pre-grazing canopy heights

Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems

Productive performance, body condition score and carcass characteristics of Deccani lambs reared under different farming systems

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