Factors affecting lamb survival in crossbred sheep

Malik, R. S.; Singh, Rahul; Acharya, R. M.; Dutta, O. P.

doi:10.1007/bf02236619

Cited by 10 publications

(7 citation statements)

References 10 publications

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“…It has similarly been observed by Malik et al [24] that weight of does at kidding influenced kids birth weights positively. It has also been reported that weight of kids at weaning was significantly higher (6.53kg) in does with body condition score 2 than those with body condition score 1 (3.05kg) [25].…”

Section: Discussionsupporting

confidence: 64%

Evaluation of some factors influencing growth performance of local goats in Nigeria

Zahraddeen¹

2009

African Journal of Food, Agriculture, Nutrition and Development

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This study was conducted at the Research Farm of the Abubakar Tafawa Balewa University, Bauchi, Nigeria to investigate some factors (breed, season, parity, sex, litter size and body condition score) affecting kids' growth performance at various ages. The daily weight gain (overall) of kids reveals non-significant breed effect whereas season, parity, sex, litter size and body condition score had significant (P<0.05) effects on the kids' daily weight gain. Kids born in the dry season had higher daily weight gain (98.95 + 4.65g) than those born in the wet season (88.15 + 5.31g). Similarly, kids born in the second (90.58 + 3.71g) and third (88.28 + 11.31g) parities gained higher weights daily than kids in the first (86.80 + 3.25g) parity. There were significant (P<0.05) sex and litter size effects on kids' daily weight gain. The male kids had higher daily weight gain than their female counterparts with respective values of 92.94 + 5.06 and 84.16 + 5.46g. Similarly, kids born single gained higher (90.06 + 4.03g) daily weights than those born as twins (87.04 + 6.58g). Kids from does with body condition score 4 had the highest (91.61+ 6.61g) daily weight gain followed by 3 (89.37 + 5.37g) and least value was observed in does with score 2 (84.67 + 4.95g). Kids' weights at various ages (birth, 30, 60, 90 and 120 days) showed significant (P<0.05) differences except for the effects of litter size (at birth, 60,90 and 120 days) and sex (at 30, 60 and 120 days of life). Similarly, kids' mean daily weight gains at various age intervals (birth -30, 31-60, 61-90 and 91-120 days) also showed significant (P<0.05) differences in these factors except for the effects of breed (at 61-90 days), sex (at birth -60 days), litter size ( 61-10 days) and parity ( 31-120 days of life). It is, therefore, concluded that large body size, good body condition, dry season, birth of male kid and single birth and high parity resulted in higher postnatal kid weight and daily weight gain. The Sahel goats are more promising than the other breeds in terms of their growth performance. Improvement of these breeds can be made through crossbreeding with better local or exotic breed. However, these local breeds can be successfully used for quality meat production and supply at an early stage of their life.

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Section: Discussionsupporting

confidence: 64%

Evaluation of some factors influencing growth performance of local goats in Nigeria

Zahraddeen¹

2009

African Journal of Food, Agriculture, Nutrition and Development

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“…This was because as the kids increasingly depend on forage intake, less milk is suckled. However, kids' weight and milk yield were negatively correlated which is contrary to the findings of Malik et al (1980) that kids' weight and milk yield were positively related and in turn affects kid survival rate. Insignificant relationship between doe's weight and milk offtake corroborates the findings of Bemji (2003) and further stated that this may be attributed to level of milk production which was sufficient to rear kids.…”

Section: Effect Of Litter Size and Kids' Sex On Doe's Weight Milk Ofcontrasting

confidence: 93%

Rendimiento y composición láctea de la cabra Roja de Kalahari y rendimiento de sus cabritos en la zona húmeda

et al. 2017

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Stage of lactation. Milk offtake. Milk quality. Kalahari red goat. Doe's weight. Kids' weight.sUMMAry Milk yield and milk composition of Kalahari red goat and the performance of their kids in the humid zone were studied. Data were collected from twenty six (26) Kalahari red goats over a period of 119 days. Stage of lactation was a significant source of variation for milk offtake (p<0.001), milk yield (p<0.0001) and not dams weight (p>0.05). Peak milk offtake was observed at weaning (42 weeks of lactation). Littersize had significantly (p<0.05) different weight with the single born kids being heavier than twin born kids. Litter size did not influence dam's weight, milk offtake and milk yield. Sex of kids significantly (p<0.05) affected dam's weight, milk yield and kids weight but had no effect on milk offtake. Kids that were single (11.98 kg) had higher weights than kids that were twins (8.8 kg). The change in kids' weight on weekly basis varied significantly (p<0.05). Kids' weight increased with the week of lactation (p<0.05) till the 12th week. Weight of kids was as high as 15.35 kg at the 17th week of lactation with the average of 10.44 kg. There was a significant difference in kids' sex (p<0.05) with male kids having higher weights (13.22 kg) when compared to the female kids (11.28 kg). The average milk components (%) were 5. 16; 7.58; 4.99; 0.54; 81.15; 11.27 and 6.47 for protein, fat, lactose, ash, moisture, total solids, solid-not-fat and pH respectively. Correlation between milk yield and dams weight (r= 0.31) was significant and positive in Kalahari goats but negative correlations were observed between milk yield and kids' weight (r= -0.45) in this breed. Kids' weight was higher in estimating milk yield in Kalahari does with a coefficient of determination of 45%. Therefore, the lengthy lactation, high milk yield and quality milk component of Kalahari goats suggest that this goat breed could be adopted as a dairy animal in the humid zone of Nigeria. Great reliability can be achieved in the prediction of milk yield using kids' weight.inforMAtion Cronología del artículo.Recibido/

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“…The significant effect of the body weight of the ewes at lambing on the lamb survival from birth to 12 months of age has also been reported by Malik et al. (1980) in crossbred sheep. Adequate nutrition to ewes not only improved the conception rates at mating, but also increased the body weight of the ewes as well the lamb birth weight and thus decreased the perinatal mortality of lambs in sheep (Mukasa‐Mugerwa et al., 1994).…”

Section: Discussionsupporting

confidence: 71%

Influence of maternal and additive genetic effects on lamb survival in Harnali sheep

Gaur

Malik

Bangar

et al. 2021

J Animal Breeding Genetics

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Lamb survival is a critical aspect in the sheep industry as it increases the chances of economic gain in the flock. The objective of the current study was to assess the incidence of lamb mortality in Harnali sheep and to estimate maternal and additive genetic effects of lamb survival using the data of 2057 lambs born to 134 sires and 623 dams for the period of 20 years (2001–2020). The genetic evaluation was carried out using threshold animal models comprising direct and maternal effects using THRGIBBS1F90 and POSTGIBBSF90 programs. Cumulative mortality (95% CI (confidence interval)) for the S1 (lambs which died up to weaning age), S2 (lambs which died from birth to 6 months of age) and S3 (lambs which died from birth to 12 months of birth) groups was 8.41 (7.21–9.61), 14.10 (12.59–15.60) and 17.70 (16.05–19.34) %, respectively. The logistic regression analysis revealed significant (p < 0.05) influences of non‐genetic factors and indicated that the female lambs, heavier dam and higher birth weight of lamb were associated with better survival as compared to their counterparts. The estimates of direct additive heritability for S1, S2 and S3 were 0.04 ± 0.01, 0.07 ± 0.03 and 0.11 ± 0.04, respectively. In addition to this, significant influences of the maternal permanent environmental effects were observed for lamb survival up to weaning as well as six months of age. Thus, the present findings suggest that lamb survival could be improved through better management practices but consideration of maternal permanent environmental effects is important for initial survival of the lamb.

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Factors affecting lamb survival in crossbred sheep

Cited by 10 publications

References 10 publications

Evaluation of some factors influencing growth performance of local goats in Nigeria

Evaluation of some factors influencing growth performance of local goats in Nigeria

Rendimiento y composición láctea de la cabra Roja de Kalahari y rendimiento de sus cabritos en la zona húmeda

Influence of maternal and additive genetic effects on lamb survival in Harnali sheep

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